Patent Publication Number: US-2015075103-A2

Title: Construction system and components therefor

Description:
TECHNICAL FIELD 
     The present invention relates to a construction system. More particularly but not exclusively it relates to a modular construction system and components therefor, for facilitating construction of residential and business units. 
     BACKGROUND OF THE INVENTION 
     Modular construction system are known and used worldwide. The main features of modular construction systems which make them desirable are that they may be mass produced off site, which allows for stockpiling and increased availability of components, are quickly installed, and may be relatively low in cost. 
     However, many modular construction systems may have undesirable features in that they may be heavy and may need to be installed by specialised heavy construction equipment such as cranes, they may be damaged by heavy weather, and they may not always provide adequate insulation. Further, such modular systems may not be vermin and insect resistant, humidity resistant, fireproof, and may require extensive regular maintenance. Further, buildings assembled using such systems may be easily damaged. 
     Known modular building systems include prefabricated concrete walls which are secured in an engaged relationship by nuts and bolts. Such concrete walls may include rigid inserts which are moulded into the concrete. An example of such prior art is illustrated in U.S. Pat. No. 5,526,629. This publication shows a composite building panel comprising a pre-cast concrete wall incorporating steel support members spaced regularly in parallel along its length, and around the perimeter edges of one of its major faces. 
     The support members extend from within the pre-cast concrete portion towards what would be the inside of the house. The support members provide attachment points for wallboard, and to provide cavities within which plumbing and electrical wiring may be laid. However, a disadvantage of such a system is that the combined weight of the frames and the concrete pre-cast portion is excessive and requires heavy duty machinery to assemble, and the positioning of the extended frame sections around the perimeter is a hindrance to the presentation of a clean concrete surface to what would be the outer side of the wall, especially where two building panels meet at a corner. Further, a system as shown in U.S. Pat. No. 5,526,629 is intended to replace an entire wall section, and does not easily lend itself to the construction of double story constructions and more modular applications. 
     Another disadvantage of known systems further may not allow for the construction system and processes to be integrated with known non-modular construction systems and processes, such as interior framing and roofing methods. 
     For the purposes of this specification, the term “plastic” shall be construed to mean a general term for a wide range of synthetic or semisynthetic polymerization products, and generally consisting of a hydrocarbon-based polymer. 
     For the purposes of this specification, the term “concrete” shall be construed to mean a general term for a wide range of products formed by the coalescence of particles, and which may or may not include cement, sand, gravel, ash, slag, alumina, or any other lightweight or heavy aggregates such as plastic or metal fibres, polystyrene, and may specifically include aerated or lightweight cementitious products. 
     For the purposes of this specification, the term “drywall member” is defined to mean a sheet of dry walling, ceiling board, floor covering or any similar sheet like or planar material of any composition. 
     In this specification, where reference has been made to external sources of information, including patent specifications and other documents, this is generally for the purpose of providing a context for discussing the features of the present invention. Unless stated otherwise, reference to such sources of information is not to be construed, in any jurisdiction, as an admission that such sources of information are prior art or form part of the common general knowledge in the art. 
     OBJECT OF THE INVENTION 
     It is an object of the present invention to provide a modular construction system and components therefor which overcomes or at least ameliorates some of the abovementioned disadvantages or which at least provides the public with a useful choice. 
     SUMMARY OF THE INVENTION 
     According to one aspect, the invention may be said to consist in a construction panel suitable for use in a modular construction process, said construction panel comprising 
     a cast concrete wall member defining two opposed major faces and at least one edge; 
     at least one partially embedded support member extending from one major face of the wall member at a distance from at least one edge of at least one major face. 
     Preferably, the wall member defines a plurality of edges. 
     Preferably, at least part of at least one of the edges of the major faces is at least partially unimpeded. 
     Preferably, the support member extends from one major face of the wall member at a distance of between 10-200 mm from the edge of the major face. 
     Preferably, the support member extends from one major face of the wall member at a distance of between 30-100 mm from the edge of the major face. 
     Preferably, the support member extends from one major face of the wall member at a distance of about 45 mm from the edge of the major face. 
     Preferably, the support member extends from one major face of the wall member at a distance of about 60 mm from the edge of the major face. 
     Preferably, the extension of the wall member between the support member and the edge of the wall member defines an extended portion. 
     Preferably, the extended portion is a linear lip. 
     Preferably, the extended portion of the wall member extends around a plurality of edges of the wall member. 
     Preferably, the extended portion of the wall member extends around all the edges of the wall member. 
     Preferably, the construction panel comprises support members extending along the length of opposed edges of the wall member, and the support members extend from the major face of the wall member at unequal distances from the respective edges of the major face. 
     Preferably, the construction panel further comprises at least one partially embedded framing support member extending from one major face of the wall member at at least one edge of at least one major face. 
     Preferably, the extended portion extends around at least some of the edges of the wall member, and a framing support member extends around at least one of the remaining edges of the wall member at the edge of the wall member. 
     Preferably, the framing support member and the support member are connected to each other. 
     Preferably, the wall member is substantially rectilinear in shape. 
     Preferably, the wall member is rectangular in shape. 
     Preferably, at least one support member is substantially L-shaped in cross section. 
     Preferably, at least one support member is substantially C-shaped in cross section. 
     Preferably, at least one support member is substantially channel shaped in cross section. 
     Preferably, the wall member includes internal reinforcing inserts. 
     Preferably, the extended portion of the wall member includes reinforcing inserts. 
     Preferably, the construction panel comprises reinforcing inserts that extend between the extended portion and the rest of the wall member. 
     Preferably, the reinforcing inserts extend at least partially from the wall member as securing extensions. 
     Preferably, the reinforcing inserts are composed of metal. 
     Preferably, the reinforcing inserts are composed of reinforcing bar. 
     Preferably, the reinforcing inserts include metal meshing. 
     Preferably, the reinforcing inserts are composed of a fibrous composition. 
     Preferably, the reinforcing inserts are composed of glass fibre. 
     Preferably, the reinforcing inserts are pre-stressed. 
     Preferably, the support member is composed of metal. 
     Preferably, the support member is composed of a fibrous composition. 
     Preferably, the support member is composed of one selected from glass fibre; 
     carbon fibre; or the like. 
     Preferably, the support member is composed of a pultruded fibre composition. 
     Preferably, the support member is composed of a pultruded glass fibre material. 
     Preferably, the construction process is a building construction process. 
     Preferably, a support member extends along one edge of the wall member, and one selected from a support member and a framing support member extends along an opposed edge of the wall member. 
     Preferably, the width of the extended portion between the support member and the edge of the wall member is between 100-150 mm. 
     Preferably, the width of the extended portion between the support member and the edge of the wall member is about 135 mm. 
     Preferably, the width of the wall member from edge to edge is between 300-900 mm. 
     Preferably, the width of the wall member is between 500-700 mm. 
     Preferably, the width of the wall member is about 600 mm. 
     Preferably, the cast planar wall member is between 1.5 and 3.5 meters long. 
     Preferably, the cast planar wall member is between 2 and 3 meters long. 
     Preferably, the cast planar wall member is about 2.5 long. 
     Preferably, the cast planar wall member has a thickness of between 30-100 mm. 
     Preferably, the cast planar wall member has a thickness of between 40-80 mm. 
     Preferably, the cast planar wall member has a thickness of about 55 mm. 
     Preferably, the construction panel includes securing formations for allowing cladding elements to be secured to at least one major face of the wall panel. 
     Preferably, the support members include batten support formations for supporting support battens. 
     Preferably, the framing support members include batten support formations for supporting support battens. 
     Preferably, the construction panel further comprises an integrally formed heating arrangement. 
     Preferably, the heating arrangement includes a length of piping suitable for the passage of heated fluid, with an inlet passage and an outlet passage. 
     Preferably, the piping is configured as several lengths of parallel pipes connected to each other. 
     Preferably, the construction panel further comprises lifting formations for lifting the construction panel during installation. 
     Preferably, one or more of the support members and the framing support members is composed of sheet metal. 
     Preferably, one or more of the support members and the framing support members are composed of galvanised sheet metal. 
     Preferably, one or more of the support members and the framing support members is composed of sheet steel. 
     Preferably, one or more of the support members and the framing support members are composed of galvanised sheet steel. 
     Preferably, the sheet metal gauge is between 0.3 and 3.0 millimetres. 
     Preferably, the sheet metal gauge is about 0.5 millimetres. 
     Preferably, the wall member includes a recess along an edge adapted for operationally receiving a sealing arrangement. 
     Preferably, the recess is along an edge on a major face opposed to the major face from which the support members extend. 
     Preferably, the wall member includes a recess along at least one minor face, said recess adapted for operationally receiving a scaling arrangement. 
     According to another aspect, the invention may be said to consist in a construction panel suitable for use in a modular construction process, said construction panel comprising 
     a cast planar wall member defining two opposed major faces; 
     at least one partially embedded support member most proximate an edge of the wall member extending from one major face of the wall member; 
     wherein the wall member extends outwardly along the plane of the wall member from the support member to define an extended portion. 
     Preferably, the edges of the extended portion are unimpeded, to thereby allow for the snug engagement of the extended portion against one or more selected from the group of 
     construction framing; 
     the extended portion of a similar construction panel; 
     the support member of a similar construction panel; and 
     an edge of a floor construction. 
     According to another aspect, the invention may be said to consist in a lintel panel suitable for use in a construction together with a construction panel as claimed in any of claims  1 - 66 , said lintel panel comprising 
     a cast planar wall member defining two opposed major faces and at least one minor face; 
     at least one partially embedded support member extending from one major face of the wall member proximate an edge of the wall member, 
     wherein the wall member extends outwardly along the plane of the wall member from the support member to define an extended portion; 
     and wherein the wall member has a length of approximately one tenth to two thirds of said construction panel to enable the lintel panel to be secured adjacent a construction panel to present an opening in the construction suitable for a window. 
     Preferably, the wall member includes internal reinforcing inserts. 
     Preferably, the extended portion of the wall member includes reinforcing inserts. 
     Preferably, the wall member includes reinforcing inserts that extend between the extended portion and the rest of the wall member. 
     Preferably, the reinforcing inserts extend at least partially from the wall member as securing extensions. 
     Preferably, the reinforcing inserts are composed of metal. 
     Preferably, the reinforcing inserts are composed of reinforcing bar (or “rebar’). 
     Preferably, the reinforcing inserts include metal meshing. 
     A lintel panel as claimed in any of claims  68  to  71 , wherein the reinforcing inserts are composed of a fibrous composition. 
     Preferably, the reinforcing inserts are composed of glass fibre. 
     Preferably, the reinforcing inserts are pre-stressed. 
     Preferably, the support member is composed of metal. 
     Preferably, the support member is composed of a fibrous composition. 
     Preferably, the support member is composed of one selected from 
     glass fibre; 
     carbon fibre; 
     or the like. 
     Preferably, the support member is composed of a pultruded fibre composition. 
     Preferably, the support member is composed of a pultruded glass fibre material. 
     Preferably, the width of the wall member is between 300 mm and 900 mm. 
     Preferably, the width of the wall member is between 500 mm and 700 mm. 
     Preferably, the width of the wall member is about 600 mm. 
     Preferably, the lintel panel further comprises at least one or more framing support members extending from one major face of the wall member along at least part of an edge of the wall member. 
     Preferably, the support members include batten support formations for supporting support battens. 
     Preferably, the framing support members include batten support formations for supporting support battens. 
     Preferably, the lintel panel further comprises lifting formations for lifting the construction panel. 
     Preferably, one or more of the support members and the framing support members is composed of sheet metal. 
     Preferably, one or more of the support members and the framing support members is composed of galvanised sheet metal. 
     Preferably, one or more of the support members and the framing support members is composed of galvanised sheet steel. 
     Preferably, the sheet metal gauge is between 0.3 and 3.0 millimetres. 
     Preferably, the sheet metal gauge is about 0.5 millimetres. 
     Preferably, the wall member includes a recess along an edge adapted for operationally receiving a sealing arrangement. 
     Preferably, the recess is along an edge on a major face opposed to the major face from which the support members extend. 
     Preferably, the wall member includes a recess along at least one of its minor faces adapted for operationally receiving a sealing arrangement. 
     According to another aspect, the invention may be said to consist in a framed construction panel comprising 
     a cast planar wall member defining two opposed major faces and at least one minor face; and 
     a pair of partially embedded framing support members extending from at least one major face of the wall member proximate opposed edges of the wall member; 
     wherein the width of the wall member is between 300 mm and 900 mm. 
     Preferably, the width of the wall member is between 500 mm and 700 mm. 
     Preferably, the width of the wall member is about 600 mm. 
     Preferably, the cast planar wall member is between 1.5 and 3.5 meters long. 
     Preferably, the cast planar wall member is between 2 and 3 meters long. 
     Preferably, the cast planar wall member is about 2.5 long. 
     Preferably, the cast planar wall member has a thickness of between 30-100 mm. 
     Preferably, the cast planar wall member has a thickness of between 40-80 mm. 
     Preferably, the cast planar wall member has a thickness of 55 mm. 
     Preferably, the wall member includes internal reinforcing inserts. 
     Preferably, the reinforcing inserts extend at least partially from the wall member as securing extensions. 
     Preferably, the reinforcing inserts are composed of metal. 
     Preferably, the reinforcing inserts are composed of reinforcing bar (or “rebar”). 
     Preferably, the reinforcing inserts include metal meshing. 
     Preferably, the reinforcing inserts are composed of a fibrous composition. 
     Preferably, the reinforcing inserts are composed of glass fibre. 
     Preferably, the reinforcing inserts are pre-stressed. 
     Preferably, the framing support member is composed of a fibrous composition. 
     Preferably, the framing support member is composed of one selected from 
     glass fibre; 
     carbon fibre; 
     or the like. 
     Preferably, the framing support member is composed of a pultruded fibre composition. 
     Preferably, the framing support member is composed of a pultruded glass fibre material. 
     Preferably, the framed construction panel includes securing formations for allowing cladding elements to be secured to at least one major face of the wall panel. 
     Preferably, the framing support members include batten support formations for supporting support battens. 
     Preferably, the framed construction panel further comprises a heating arrangement. 
     Preferably, the framed construction panel further comprises an integrally formed heating arrangement. 
     Preferably, the heating arrangement includes a length of piping suitable for the passage of heated fluid, with an inlet passage and an outlet passage. 
     Preferably, the piping is configured as several lengths of parallel pipes connected to each other. 
     Preferably, the framed construction panel further comprises lifting formations for lifting the construction panel. 
     Preferably, one or more of the framing support members is composed of metal. 
     Preferably, one or more of the framing support members comprises sheet metal. 
     Preferably, one or more of the support members and the framing support members comprise galvanised sheet metal. 
     Preferably, the sheet metal gauge is between 0.5 and 3.0 millimetres. 
     Preferably, the sheet metal gauge is about 0.5 millimetres. 
     Preferably, the wall member includes a recess along an edge adapted for operationally receiving a scaling arrangement. 
     Preferably, the recess is along an edge on a major face opposed to the major face from which the framing support members extend. 
     Preferably, the wall member includes a recess along at least one of its minor faces. 
     According to another aspect, the invention may be said to consist in a framed lintel panel suitable for use in a construction together with one or more selected from a construction panel as claimed in any of claims  1  to  66 , a lintel panel as claimed in any of claims  67 - 97 , and a framed construction panel as claimed in any of claims  98  to  133 , said lintel panel comprising: 
     a cast planar wall member defining two opposed major faces and a minor face; 
     a pair of partially embedded framing support members extending from one major face of the wall member proximate opposed edges of the wall member; 
     wherein the inside width of the wall member is between 300 mm and 900 mm; 
     and wherein the wall member has a length of approximately one tenth to two thirds of one selected from said construction panel and the framed construction panel to enable the lintel panel to be secured adjacent a construction panel to present an opening in the construction suitable for a window. 
     Preferably, the width of the wall member is between 500 mm and 700 mm. 
     Preferably, the width of the wall member is about 600 mm. 
     Preferably, the wall member includes internal reinforcing inserts. 
     Preferably, the reinforcing inserts extend at least partially from the wall member as securing extensions. 
     Preferably, the reinforcing inserts are composed of metal. 
     Preferably, the reinforcing inserts are composed of reinforcing bar (or “rebar’). 
     Preferably, the reinforcing inserts include metal meshing. 
     Preferably, the reinforcing inserts are composed of a fibrous composition. 
     Preferably, the reinforcing inserts are composed of glass fibre. 
     Preferably, the reinforcing inserts are pre-stressed. 
     Preferably, the framing support member is composed of metal. 
     Preferably, the framing support member is composed of a fibrous composition. 
     Preferably, the framing support member is composed of one selected from 
     glass fibre; 
     carbon fibre; 
     or the like. 
     Preferably, the framing support member is composed of a pultruded fibre composition. 
     Preferably, the framing support member is composed of a pultruded glass fibre material. 
     Preferably, the framing support members include batten support formations for supporting support battens. 
     Preferably, the framed lintel panel further comprises lifting formations for lifting the framed construction panel. 
     Preferably, one or more of the framing support members comprises sheet metal. 
     Preferably, one or more of the framing support members comprises bent or formed sheet metal. 
     Preferably, one or more of the support members and the framing support members comprise galvanised sheet metal. 
     Preferably, the sheet metal gauge is between 0.3 and 3.0 millimetres. 
     Preferably, the sheet metal gauge is about 0.5 millimetres. 
     Preferably, the wall member includes a recess along an edge adapted for operationally receiving a sealing arrangement. 
     Preferably, the recess is along an edge on a major face opposed to the major face from which the framing support members extend. 
     Preferably, the wall member includes a recess along at least one minor face for operationally receiving a sealing arrangement. 
     According to another aspect, the invention may be said to consist in a wall construction comprising 
     at least a plurality of construction panels as described disposed with the edges of the major faces of adjacent planar wall members at least partially abutting each other, and 
     a structural member disposed intermediate the support members most proximate the abutting edges of the adjacent wall members; 
     wherein the construction panels are secured or securable to the structural member by at least one securing arrangement. 
     Preferably, the wall construction comprises, at a position secured along at least part of an edge of a major face of at least one construction panel, one or more selected from 
     a framed lintel panel as claimed in any of claims  134  to  159 ; 
     a lintel panel as claimed in any of claims  67  to  97 ; and 
     a framed construction panel as claimed in any of claims  98  to  133 . 
     Preferably, the wall construction comprises a plurality of construction panels disposed with an edge of the major faces of adjacent wall members proximate each other. 
     Preferably, the wall construction comprises a plurality of construction panels disposed with the minor faces of adjacent wall members abutting each other. 
     Preferably, the wall construction comprises a framed construction panel secured to an adjacent construction panel along an edge of a major face of their wall members. 
     Preferably, the wall construction comprises a framed construction panel secured to an adjacent construction panel with the minor faces of their adjacent wall panels abutting each other. 
     A wall construction as claimed in any of claims  160  to  165 , wherein the wall construction comprises a lintel panel secured along an edge of a major face of at least one selected from a construction panel and a framed construction panel. 
     Preferably, the securing arrangement is one or more selected from 
     a nut and bolt arrangement; 
     a clip arrangement; and 
     a rivet-type arrangement. 
     Preferably, the wall construction includes a mounting arrangement secured between two support members of adjacent construction panels. 
     Preferably, the wall construction comprises a plurality of mounting arrangements mounted between adjacent pairs of construction panels. 
     Preferably, the wall construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the wall construction comprises a drywall member mounted to the support battens. 
     Preferably, the wall construction comprises an insulative layer between the drywall member and the support members. 
     Preferably, the insulative layer is a plastic layer. 
     Preferably, the insulative layer is a polystyrene or similar layer. 
     Preferably, the wall construction comprises a load bearing mounting arrangement mounted to at least one support member. 
     Preferably, the wall construction further comprises a supporting structural formation comprising an upper supporting surface defining an edge formation; and 
     wherein at least one support member extends substantially horizontally from the wall panel and is supported by the upper supporting surface construction panel, and the extended portion of said construction panel extends downwardly past the edge formation to below the upper supporting surface. 
     Preferably, the wall construction includes a sealing arrangement between adjacent construction panels and/or adjacent construction panels and framed construction panels. 
     Preferably, the sealing arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the scaling arrangement comprises a settable scaling filler composition received into a combined recess formed by adjacent recesses of adjacent construction panels. 
     According to another aspect, the invention may be said to consist in a wall construction comprising 
     a supporting structural formation comprising an upper supporting surface defining an edge formation; and 
     at least one construction panel as claimed in any of claims  1  to  66 , 
     wherein said support member extends substantially horizontally from the wall member and is supported by the upper supporting surface, and the extended portion of the construction panel extends downwardly past the edge formation to below the upper supporting surface. 
     Preferably, the wall construction includes a securing arrangement for securing the support member to the supporting structural formation. 
     Preferably, the wall member is distanced from the edge of the supporting structural formation to provide ventilation through the wall construction. 
     Preferably, the wall construction comprises one or more selected from 
     a framed lintel panel as claimed in any of claims  134  to  159 ; 
     a lintel panel as claimed in any of claims  67  to  97 ; and 
     a framed construction panel as claimed in any of claims  98  to  133 . 
     According to another aspect, the invention may be said to consist in a floor construction comprising 
     a supporting structural formation comprising an upper supporting surface defining an edge formation; and 
     at least one construction panel as claimed in any of claims  1  to  66 ; 
     wherein said construction panel is disposed with its 
     extended portion abutting against the upper supporting surface to support the wall member vertically, and 
     said support member abutting against the edge formation of the supporting structural formation. 
     Preferably, the floor construction comprises one or more selected from 
     a framed lintel panel as claimed in any of claims  134  to  159 ; 
     a lintel panel as claimed in any of claims  67  to  97 ; and 
     a framed construction panel as claimed in any of claims  98  to  133 . 
     Preferably, the floor construction comprises a plurality of construction panels disposed with an edge of the major faces of adjacent wall members proximate each other. 
     Preferably, the floor construction comprises a plurality of construction panels disposed with the minor faces of adjacent wall members abutting each other. 
     Preferably, the floor construction comprises at least one framed construction panel secured along an edge of a major face of at least one construction panel. 
     Preferably, the plurality of construction panels disposed with an edge of their major faces proximate each other are secured to each other by a securing arrangement at abutting support members. 
     Preferably, securing extensions extend from adjacent wall members between the adjacent wall members. 
     Preferably, the securing extensions are secured to a supporting structural formation. 
     Preferably, the securing extensions are secured to a supporting structural formation by being cast in place in situ. 
     Preferably, the floor construction also acts as a ceiling construction for a construction level below the floor construction. 
     Preferably, the floor construction includes a mounting arrangement secured to at least two support members of adjacent construction panels. 
     Preferably, the floor construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the wall construction comprises a drywall member mounted to the support battens. 
     Preferably, the wall construction comprises a drywall member mounted to the support members. 
     Preferably, the wall construction comprises one or more selected from a thermally insulative layer and an electrically insulative layer between the drywall member and the support members. 
     Preferably, the insulative layer is a plastic layer. 
     Preferably, the insulative layer is a polystyrene or similar layer. 
     Preferably, the floor construction comprises a load bearing mounting arrangement mounted to the support member. 
     Preferably, the floor construction includes a sealing arrangement between adjacent construction panels and/or adjacent construction panels and framed construction panels. 
     Preferably, the sealing arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the sealing arrangement comprises a settable sealing filler composition received into a combined recess formed by adjacent recesses of adjacent panels. 
     According to another aspect, the invention may be said to consist in a roof construction comprising 
     a plurality of construction panels as claimed in any of claims l- 66  above disposed with the edges of the major faces of adjacent planar wall members proximate each other, and 
     a structural member disposed intermediate the support members most proximate the abutting edges of the adjacent wall members; and 
     wherein the construction panels are secured to the structural member by means of a securing arrangement. 
     Preferably, the roof construction comprises one or more selected from 
     a framed lintel panel as claimed in any of claims  134  to  159 ; 
     a lintel panel as claimed in any of claims  67  to  97 ; and 
     a framed construction panel as claimed in any of claims  98  to  133 . 
     Preferably, the roof construction comprises a plurality of construction panels disposed with an edge of the major faces of adjacent wall members proximate each other. 
     Preferably, the roof construction comprises a plurality of construction panels disposed with an edge of the major faces of adjacent wall members overlapping each other. 
     Preferably, the extended portion of the wall members overlap with a proximate wall member. 
     Preferably, the roof construction includes at least one securing arrangement for securing one selected from the construction panel and the framed construction panel to one selected from a construction panel and a framed construction panel at adjacent framing support members. 
     Preferably, the roof construction includes fastening means for fastening the roof construction to a wall. 
     Preferably, the fastening means is a collar tie. 
     Preferably, the roof construction includes a mounting arrangement secured on each of at least a plurality of support members. 
     Preferably, the roof construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the roof construction comprises a drywall member mounted to the support battens. 
     Preferably, the wall construction comprises a drywall member mounted to the support members. 
     Preferably, the planar wall member encloses a cavity between the wall member and the drywall member suitable for installation of insulative material. 
     Preferably, the roof construction comprises a load bearing mounting arrangement mounted to the support member. 
     Preferably, the roof construction comprises a cladding element secured to a major face of the wall member. 
     Preferably, the roof construction includes a mounting bracket for mounting the roof construction to one selected from an adjacent wall construction and an adjacent framed wall construction. 
     Preferably, at least one of the cast planar wall members is moulded to resemble a plurality of roof tiles on at least one side. 
     Preferably, the roof construction includes a sealing arrangement between adjacent one selected from the construction panel and the framed construction panel and one selected from a construction panel and a framed construction panel. 
     Preferably, the sealing arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the sealing arrangement comprises a settable sealing filler composition received into a combined recess formed by adjacent recesses of adjacent panels. 
     According to another aspect, the invention may be said to consist in a framed roof construction comprising 
     a plurality of framed construction panels as claimed in any of claims  98  to  133  disposed with the framing support members of the adjacent framed construction panels abutting each other; 
     wherein the adjacent abutting framing support members are secured to each other by means of a securing arrangement. 
     Preferably, the framed roof construction comprises a plurality of framed construction panels disposed with the minor faces of adjacent wall members abutting each other. 
     Preferably, the securing arrangement is one or more selected from 
     a nut and bolt arrangement; 
     a clip arrangement; and 
     a rivet-type arrangement. 
     Preferably, the framed roof construction includes a mounting arrangement secured to a plurality of support members. 
     Preferably, the framed roof construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the framed roof construction comprises a planar drywall member mounted to the support battens. 
     Preferably, the framed roof construction comprises a planar drywall member mounted to the framing support members. 
     Preferably, the framed roof construction comprises a load bearing mounting arrangement mounted to at least one framing support member. 
     Preferably, the framed roof construction comprises a cladding element secured to a major face of the wall member. 
     Preferably, the framed roof construction includes a mounting bracket for mounting the framed roof construction to a wall. 
     Preferably, the cast planar wall member is moulded to resemble a plurality of roof tiles on at least one side. 
     Preferably, the roof construction includes a sealing arrangement between adjacent framed construction panels. 
     Preferably, the sealing arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the sealing arrangement comprises a settable sealing filler composition received into a combined recess formed by adjacent recesses of adjacent panels. 
     According to another aspect, the invention may be said to consist in a framed wall construction comprising 
     a plurality of framed construction panels as claimed in any of claims  98  to  133  disposed alongside each other with the framing support members of adjacent framed construction panels abutting each other; and 
     wherein the adjacent abutting framing support members are secured to each other by at least one securing arrangement. 
     Preferably, the securing arrangement is one or more selected from 
     a nut and bolt arrangement; 
     a clip arrangement; and 
     a rivet-type arrangement. 
     Preferably, the framed wall construction comprises one selected from a framed lintel panel and a lintel panel secured along an edge of a major face of at least one framed construction panel. 
     Preferably, the framed wall construction comprises a plurality of framed construction panels disposed with an edge of the major faces of adjacent wall members proximate each other. 
     Preferably, the framed wall construction comprises a plurality of framed construction panels disposed with the minor faces of adjacent wall members abutting each other. 
     Preferably, the framed wall construction includes a mounting arrangement secured on at least two framing support members of adjacent framed construction panels. 
     Preferably, the framed wall construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the framed wall construction comprises a drywall member mounted to the support battens. 
     Preferably, the framed wall construction comprises a drywall member mounted to the support members. 
     Preferably, the framed wall construction comprises an insulative layer between the drywall member and the support members. 
     Preferably, the insulative layer is one or more selected from electrically insulative, and thermally insulative. 
     Preferably, the framed wall construction comprises a load bearing mounting arrangement mounted to at least one support member. 
     Preferably, the framed wall construction comprises a cladding element secured to a major face of the wall member. 
     Preferably, the framed wall construction comprises a pair of framed construction panels secured to each other with a major face of their wall panels abutting each other. 
     Preferably, the framed wall construction includes a sealing arrangement between adjacent framed construction panels. 
     Preferably, the sealing arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the sealing arrangement comprises a settable sealing filler composition received into a combined recess formed by adjacent recesses of adjacent panels. 
     According to another aspect, the invention may be said to consist in a framed floor construction comprising 
     a supporting structural formation, said supporting structural formation supporting 
     a plurality of framed construction panels as claimed in any of claims  98  to  133 , disposed alongside each other with the framing support members of adjacent framed construction panels abutting each other, and 
     wherein the adjacent abutting framing support members are secured to each other by at least one securing arrangement. 
     Preferably, the framed floor construction comprises a plurality of framed construction panels disposed with an edge of the major faces of adjacent wall members proximate each other. 
     Preferably, the framed floor construction comprises a plurality of framed construction panels disposed with the minor faces of adjacent wall members abutting each other. 
     Preferably, the plurality of framed construction panels disposed with an edge of their major faces proximate each other are secured to each other by a securing arrangement at abutting framing support members. 
     Preferably, securing extensions extend from proximate wall members between the wall members. 
     Preferably, securing extensions extend from the minor face of adjacent wall members to between the wall members. 
     Preferably, the securing extensions are secured to a supporting structural formation. 
     Preferably, the securing extensions are secured to a supporting structural formation by being cast in place in situ. 
     Preferably, the framed floor construction also acts as a framed roof construction for a level below the framed floor construction. 
     Preferably, the framed floor construction includes a mounting arrangement secured to at least two framing support members of adjacent framed construction panels. 
     Preferably, the framed floor construction further comprises support battens mounted between at least two mounting arrangements. 
     Preferably, the framed floor construction comprises a planar drywall member mounted directly or indirectly to the framing support members. 
     Preferably, the framed floor construction comprises a load bearing mounting arrangement mounted to the framing support member. 
     Preferably, the framed floor construction comprises a pair of framed construction panels secured to each other with a major face of their wall panels abutting each other. 
     Preferably, the framed wall construction includes a sealing arrangement between adjacent construction panels and/or adjacent construction panels and framed construction panels. 
     Preferably, the scaling arrangement comprises a sealing member received into a combined recess formed by adjacent recesses of adjacent panels. 
     Preferably, the sealing arrangement comprises a settable sealing filler composition received into a combined recess formed by adjacent recesses of adjacent panels. 
     According to another aspect, the invention may be said to consist in a mounting arrangement suitable for use with a construction panel as claimed in any of claims  1  to  66 , said mounting arrangement comprising 
     a body member including at least one securing formation towards one end of the body member, said securing formation being configured and adapted for securing the body member between two adjacent support members in a stable manner, 
     a pair of opposed engaging formations disposed towards an opposed end of the body member from the securing formation, said engaging formations being configured and dimensioned to be suitable for engaging a batten between them. 
     Preferably, the body member is composed of electrically insulative material. 
     Preferably, the body member is composed of thermally insulative material. 
     Preferably, the body member is integrally formed. 
     Preferably, the body member may be substantially planar in configuration. 
     Preferably, the securing formation is a bolt hole. 
     Preferably, the engaging formations are a pair of opposed hook-like formations configured to engage with the edges of a batten. 
     According to another aspect, the invention may be said to consist in a load bearing mounting arrangement adapted and configured for use with a construction panel as claimed in any of claims  1  to  66 , said mounting arrangement comprising: 
     a body member including 
     at least one securing formation towards one end of the body member, said securing formations being configured and dimensioned for rigidly securing the body member to a support member, and 
     an engaging formation disposed towards an opposed end of the body member from the securing formation, said engaging formations being configured and dimensioned for providing wall fixing points for one or more selected from 
     a wall mounted toilet; 
     a wall mounted cupboard 
     a vanity unit; 
     and the like. 
     According to another aspect, the invention may be said to consist in a cladding element adapted and configured for use with one or more selected from a construction panel as claimed in any of claims  1  to  66 , and a framed construction panel as claimed in any of claims  98  to  133 , wherein the cladding element comprises 
     a wall member defining two opposed major faces and dimensions closely aligned with the dimensions of one selected from said construction panel and a framed construction panel; and including 
     securing formations configured for alignment with the securing formations of said one selected from a construction panel and a framed construction panel for securing a major face of the wall member of the cladding element to a major face of the wall member of the said one selected from a construction panel and a framed construction panel, to thereby reinforce the strength of the said one selected from a construction panel and a framed construction panel, and shield the said one selected from a construction panel and a framed construction panel. 
     Preferably, the securing formations may be bolt holes. 
     Preferably, the securing formations may be recesses configured for receiving rawl bolt-type mechanisms. 
     Preferably, the cladding element includes a stepped edge formation suitable for creating an overlap with an adjacent similar cladding element. 
     Preferably, the cladding element further comprises lifting formations for lifting it. 
     Preferably, the wall member includes a recess along an edge adapted for operationally receiving a sealing arrangement. 
     According to another aspect, the invention may be said to consist in a building construction comprising at least one or more selected from a 
     a wall construction as claimed in any of claims  1  to  66 ; 
     a floor construction as claimed in any of claims  184  to  204 ; 
     a roof construction as claimed in any of claims  205  to  224 ; 
     a framed wall construction as claimed in any of claims  239  to  255 ; 
     a framed floor construction as claimed in any of claims  256  to  272 ; and 
     a framed roof construction as claimed in any of claims  225  to  238 . 
     According to another aspect, the invention may be said to consist in a framed building construction comprising at least one or more selected from 
     a framed wall construction as claimed in any of claims  239  to  255 ; 
     a framed floor construction as claimed in any of claims  256  to  272 ; and 
     a framed roof construction as claimed in any of claims  225  to  238 . 
     According to another aspect, the invention may be said to consist in a modular construction system comprising 
     one or more selected from 
     a construction panel as claimed in any of claims  1  to  66 ; and 
     a framed construction panel as claimed in any of claims  98  to  133 ; and 
     at least one or more selected from 
     a framed construction panel as claimed in any of claims  98  to  133 ; 
     a construction panel as claimed in any of claims  1  to  66 ; 
     a mounting arrangement as claimed in any of claims  273  to  279   
     a cladding element as claimed in any of claims  281  to  286 ; 
     a lintel panel as claimed in any of claims  67  to  97 ; 
     a framed lintel panel as claimed in any of claims  134  to  159 ; and 
     a load bearing mounting arrangement as claimed in any of claim  280 . 
     Preferably, the modular construction system further comprises a securing mechanism for securing support members and/or framing support members to each other. 
     Preferably, the modular construction system further comprises at least one or more selected from: 
     a support batten; and 
     a drywall member. 
     Preferably, the width of the wall member is standardised for each of said construction panel; and 
     said framed construction panel. 
     Preferably, the width of the wall member is standardised for each of said construction panel; 
     framed construction panel; 
     lintel panel; and 
     framed lintel panel. 
     Preferably, the width of the wall member is standardised at between 300-700 mm. 
     Preferably, the width of the wall member is standardised at between 500-650 mm. 
     Preferably, the width of the wall member is standardised at about 600 mm. 
     A modular construction kit comprising at least two or more of 
     a wall construction as claimed in any of claims  1  to  66 ; 
     a floor construction as claimed in any of claims  184  to  204 ; 
     a roof construction as claimed in any of claims  205  to  224 ; 
     a framed wall construction as claimed in any of claims  239  to  255 ; 
     a framed floor construction as claimed in any of claims  256  to  272 ; and 
     a framed roof construction as claimed in any of claims  225  to  238 . 
     Preferably, the width of the wall member is standardised for each of said construction panel; and 
     said framed construction panel. 
     Preferably, the width of the wall member is standardised for each of said construction panel; 
     framed construction panel; 
     lintel panel; and 
     framed lintel panel. 
     Preferably, the width of the wall member is standardised at between 300-700 mm. 
     Preferably, the width of the wall member is standardised at between 500-650 mm. 
     Preferably, the width of the wall member is standardised at about 600 mm. 
     For the purposes of this specification, the term “drywall member” is defined to mean a sheet of drywalling, ceiling board, floor covering or any similar sheet like or planar material of any composition. 
     Other aspects of the invention may become apparent from the following description which is given by way of example only and with reference to the accompanying drawings. 
     As used herein the term “and/or” means “and” or “or”, or both. 
     As used herein “(s)” following a noun means the plural and/or singular forms of the noun. 
     The term “comprising” or “including” as used in this specification [and claims] means “consisting at least in part of”. When interpreting statements in this specification [and claims] which include that term, the features, prefaced by that term in each statement, all need to be present but other features can also be present. Related terms such as “comprise” and “comprised” and “include” and “included” are to be interpreted in the same manner. 
     To those skilled in the art to which the invention relates, many changes in construction and widely differing embodiments and applications of the invention will suggest themselves without departing from the scope of the invention as defined in the appended claims. The disclosures and the descriptions herein are purely illustrative and are not intended to be in any sense limiting. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will now be described by way of example only and with reference to the drawings in which: 
         FIG. 1 : shows a perspective view of a construction panel; 
         FIG. 2 : shows a cutaway close up perspective view of the construction panel of  FIG. 1   
         FIG. 3 : shows an exploded assembly perspective view of a construction system; 
         FIG. 4 : shows a cutaway elevation view of a building including a construction system; 
         FIG. 5 : shows a cutaway cross section view of construction panel; 
         FIG. 6 : shows a cutaway plan view of a framed wall construction; 
         FIG. 7 : shows a side view of a support member; 
         FIG. 8 : shows a cutaway plan view of a framed roof construction; 
         FIG. 9 : shows a cutaway cross section side view of a lintel panel and mounting arrangement in a wall construction; 
         FIG. 10 : shows a cutaway side view of a load bearing mounting arrangement lintel panel in a wall construction; 
         FIG. 11 : shows a cutaway plan view of a wall construction; 
         FIG. 12 : shows a cutaway cross section view of a wall construction; 
         FIG. 13 : shows a cutaway cross section plan view of an internal corner created by a framed wall construction; 
         FIG. 14 : shows a cutaway cross section plan view of a panel join, an external corner, an internal partition join, and a stop end created by a construction system; 
         FIG. 15 : shows a cutaway cross section plan view of a stop end created by a construction system; 
         FIG. 16 : shows a cutaway cross section plan view of an external corner in a wall construction; 
         FIG. 17 : shows a cutaway cross section plan view of a lintel panel; 
         FIG. 18 : shows a cutaway cross section plan view of a wall construction; 
         FIG. 19 : shows a cutaway cross section plan view of a framed wall construction; 
         FIG. 20 : shows a cutaway cross section plan view of a wall construction showing an external corner; 
         FIG. 21 : shows a cutaway cross section elevation view of a wall construction showing how the height of the wall construction can be extended by including a lintel panel; 
         FIG. 22 : shows a cutaway cross section elevation view of a framed wall construction, a framed floor construction and a wall construction; 
         FIG. 23 : shows a cutaway cross section elevation view of a framed wall construction, a framed floor construction and a wall construction; 
         FIG. 24 : shows a cutaway cross section elevation view of a framed wall construction; 
         FIG. 25 : shows a cutaway cross section elevation view of a framed wall construction; 
         FIG. 26 : shows a cutaway plan view of a framed wall construction with the framed construction panels bolted to each other back to back; 
         FIG. 27 : shows a cutaway plan view of a floor construction; 
         FIG. 28 : shows a cutaway cross section elevation view of a framed wall construction, a floor construction and a wall construction; 
         FIGS. 29-31 : shows how internal and external corners may be created by various configurations of frame construction panels and construction panels; 
         FIG. 32 : shows a cutaway cross section elevation view of a lintel panel used to form a parapet, supported on a construction panel; 
         FIG. 33 : shows a cutaway cross section elevation view of a lintel panel used under a low set window; 
         FIG. 34 : shows a cutaway elevation view of a wall construction; 
         FIG. 35 : shows a plan view of a lintel panel secured to a framed construction panel; 
         FIG. 36 : shows a cutaway cross section elevation view of a lintel panel secured to a structural member to form a window sill; 
         FIG. 37 : shows a cutaway cross section elevation view of a framed floor construction and a wall construction; 
         FIG. 38 : shows a perspective view of a wall construction secured to a framed wall construction showing the interior major faces; 
         FIG. 39 : shows a variety of panels that are available for use in the modular construction system; 
         FIG. 40 : shows a cutaway cross sectional view of a heating arrangement integrally formed into one of the panels; 
         FIG. 41 : shows a cutaway side view of a heating arrangement integrally formed into a panel; 
         FIG. 42 : shows a close up cutaway cross sectional view of a heating arrangement integrally formed into a panel, showing a connection made to the piping; 
         FIG. 43 : shows a cutaway top view of an insulative polystyrene layer mounted between dry walling and a support member of a construction panel; 
         FIG. 44 : shows a sealing arrangement for sealing between two construction panels; 
         FIGS. 45-55 : shows a series of architectural sketches showing various configurations of constructions that may be built using the modular construction system; and 
         FIG. 56 : shows a cutaway cross section view of a wall construction mounted on a supporting structural formation; 
         FIG. 57 : shows a plan view of a framed roof construction; 
         FIG. 58 : shows an elevation view of a roof construction; 
         FIG. 59 : shows a cutaway elevation view of a roof construction; 
         FIG. 60 : shows a close up cutaway elevation view of a roof construction; 
         FIG. 61 : shows a cutaway cross section view of a wall construction mounted on a supporting structural formation; 
         FIG. 62 : shows an elevation view of the supporting structural formation of  FIG. 61  showing a vent hole; 
         FIG. 63 : shows a plan view of a first embodiment of a sealing arrangement between two wall members; and 
         FIG. 64 : shows a plan view of a second embodiment of a sealing arrangement between two wall members. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S) 
     With reference to the above drawings, in which similar features are generally indicated by similar numerals, a modular construction system according to one aspect of the invention is generally indicated by the numeral  100 . The construction system  100  is generally comprised of a construction panel  200 , a lintel panel  300 , a mounting arrangement  400 , a cladding element  500 , a load bearing mounting arrangement  600 , a framed construction panel  1200 , and a framed lintel panel  1300 . 
     The modular construction system  100  may be used to construct various configurations of floor constructions  700 , wall constructions  800 , roof constructions  900 , framed floor constructions  1700 , framed wall constructions  1800 , and framed roof constructions  1900  to form a building  1000 . 
     It is envisaged that the modular nature of the construction system  100  will allow a wide variety of configurations of buildings  1000  to be constructed, allowing relatively wide architectural freedom to design, while providing a relatively cheap, quick way of assembling buildings  1000  which have reasonable fire resistance, heat insulation, sound insulation, earthquake resistance, and ease of assembly. It is further envisaged that a building  1000  (as shown in  FIGS. 4 and 45  to  53 ) built from the components may not require any specialised skills, nor large machinery to assist with the erection of the building  1000 . 
     The construction panel  200  comprises a cast concrete or cement planar wall member  210  defining two opposed major faces  215 ; and at least one, but preferably more support members  220  partially embedded in the wall member  210 . The defining feature of the support members  220  is their location. In particular, a support member  220  as used in this specification is located to extend from a major face  215  of a wall member  210  at a distance “d” (as shown in  FIG. 2 ) from at least one of the edges of the wall member  210 . In this way, an unimpeded extended portion  212  of the wall member  210  is defined by the extension of the wall member  210  outwardly from the support member substantially along the plane of the wall member  210 . 
     A support member  220  is differentiated in this regard from a “framing support member”  230  as used in this specification, in that the framing support member  230  is disposed to extend from the major face  215  of the wall member  210  proximate an edge of the wall member. 
     Similarly, a construction panel  200  and a lintel panel  300  include at least one extended portion  212  and  312  respectively along at least one of the edges of their major faces. 
     Wherever the term “framed” or “framing” is used in this description, this indicates that the panel being referred to does not include such an extended portion  212  or  312 . In such “framed” panels, a framing support member  230  is used to extend from the major face  215  of the wall member  210  proximate its edge. A construction panel  200  can have a combination of support members  220  and framing support members  230 , as long as at least one extended portion  212  is presented. A framed construction panel does not include a support member  220 , but can have one or more framing support members  230  proximate its edge. If only one framing support members  230  is present along an edge of a major face, this shall not be construed as defining an extended portion toward the opposite edge of the major face. 
     Also, for purposes of clarity, when a larger construction is referred to as being “framed”, this indicates that none of its component panels includes such an extended portion  212  or  312 . However, when at least one of the panels making up such a larger construction includes such an extended portion, then the construction and/or panel is not referred to as being “framed’. 
     The support members  220  and/or framing support members  230  can be preferably L-shaped, C-shaped or channel shaped in cross section, but can be of any suitable cross sectional shape. Further in one embodiment, the support members  220  are composed of a metal, preferably steel, composition, however in another embodiment the support members  220  can be composed of a fibrous composition such as glass fibre, carbon fibre or the like. In one preferred embodiment, the support members  220  could be composed of pressed galvanised steel plate between 0.2 to 1.5 mm, and preferably about 0.5 mm thick, and formed as a channel section. It is envisaged that in another embodiment the support members  220  can be composed of a pultruded fibre composition. 
     The support members  220  are locate nearby, but not at the edge of, at least one edge of the wall member  210 . The support members  210  and/or framing support members  230  preferably extend from one major face  215  of the wall member, although it is envisaged that they could extend from both major faces. The major face  215  of the wall member  210  that the support members  220  and/or framing support members  230  extend from, will typically be the inside face of the construction panel—i.e. facing inwardly in a completed building—although this may not always be the case. 
     The effect of the structure of the construction panel  200  described above is that of a single wall member  210  having at least one unimpeded edge, with at least one partially embedded support member  220  extending from the major face  215  of the wall member at a distance d (shown in  FIG. 2 ) from one of the edges of the wall member  210 . 
     In a preferred embodiment, at least one of the outer edges of the extended portion  212  are unimpeded, allowing the extended portion to be snugly abutted against an extended portion of a similar construction panel  200 , while the support members  220  of the adjacent construction panels will sit on either side of a suitably dimensioned structural member  1020  of a building  1000  (as shown in  FIG. 18 ), such as a post, rafter, joist, or the like. The major face  215  of the wall member  210  which does not have support members  220  and/or framing support members  230  extending from it will present a clean, preferably cement, surface—typically facing towards the outside of the building  1000 —which may be painted or clad in a cladding element  500  as described below. 
     In a preferred embodiment, the support member  220  extends from one major face  215  of the wall member  210  at a distance of between 10-200 mm from the edge of the major face, and more preferably at a distance of between 30-150 mm from the edge of the major face. In a most preferred embodiment, the support member  220  extends from a major face  215  of the wall member  210  at a distance of about 45 mm or about 55 mm from the edge of the major face  215 . In another most preferred embodiment, the support member  220  extends from a major face  215  of the wall member  210  at a distance of about 135 mm from the edge of the major face  215 . 
     It is envisaged that the construction panel  200  will be substantially rectangular in shape, and can include a support member  220  extending from a major face  215  of the wall member  210  around all four of its edges, although this need not necessarily be the case. In some embodiments, the support member  220  can extend from the major face of the wall member  210  around 1, 2, or 3 of its edges. 
     It is further envisaged that the construction panel  200  can include a framing support member  230  which extends along an edges of the major face of the wall member  210  that the support members  220  do not extend along. The framing support members  230  can typically be disposed to extend from the same major face  215  of the wall member  210  that the support member(s)  220  extend from, although this may not always be the case, depending on the design of the larger construction. 
     It is envisaged that the construction panels  200  will be manufactured off site as pre-cast (preferably concrete or cement) construction panels  200  in a wide variety of configurations. Stock may be held of each type of configuration of construction panel  200 , and the correct configuration of construction panel  200  selected from the held stock and sent to site according to the design of the building  1000  to be built. 
     Typically, a construction panel  200  having a support member  220  disposed towards one edge would be used where the edge of the wall member  210  of the construction panel is intended to be secured to a suitably dimensioned structural member (as shown in  FIG. 18 ). The distance between the unimpeded edge of the extended portion  212  and the support member  220  allows the support member  220  to be secured to a structural member  1020 , while the extended portion extends past the structural member  1020  to present a clean surface towards the outside of the structural member  1020 . 
     It is envisaged that in a construction panel, the plurality of support members  220  and/or the framing support members  230  will be connected to each other in a secured manner, such as by welding, riveting or bolting, in order to increase the structural strength of the construction panel  200 . 
     Further, the wall member  210  can include internal reinforcing inserts  214  shown in  FIG. 5  in the form of metal (preferably steel) reinforcing bar (“rebar”) or mesh which extend from the wall member  210  into the extended portion  212 . In another embodiment, the wall member  210  and the extended portion  212  can each have their own reinforcing inserts  214 . In one embodiment, the reinforcing inserts  216  can be steel mesh. However, it is envisaged that the reinforcing inserts could also be composed of a fibrous composition, such as glass fibre, carbon fibre or the like. In another embodiment, it is envisaged that the reinforcing inserts  214  can be pre-stressed. 
     In one embodiment of the construction panel  200 , the reinforcing inserts  214  extend from the wall member as securing extensions  216 . The use of the securing extensions  216  will be explained below. 
     In one embodiment of the construction panel, a support member  220  extends along one edge of the wall member, and one selected from a support member  220  and a framing support member  1230  extends along an opposed edge of the wall member  210 . In this embodiment, the inside distance between the support member  220  the opposed support member  220  or framing support member  1230  is between 300 mm and 900 mm, and most preferably around 500 mm. 
     In a preferred embodiment, it is envisaged that the width of the wall member  210  will coincide with the usage of multiples of 300 mm (or approximately one imperial foot) for materials in the construction industry. For example, the most popular width is 1200 mm for exterior and interior linings. Further, a width of over 600 mm for attachment studs does not comply with (New Zealand) building regulations, and the use of widths of less than 600 mm may not be economical. 
     In a most preferred embodiment of the construction panel  200 , the width of the wall member  210  will be standardised at 600 mm. This may allow increased architectural freedom of design, and reduced complexity in the number of and design of construction panels  200 . 
     Further it is envisaged that in a preferred embodiment, the wall member  220  will have a length of about 2.5 meters long, (commensurate with the wall height of a typical residential building). The thickness of the wall member is envisaged as being about 50 mm thick. This thickness is expected to provide structural integrity to the outer wall of the building  1000 , as well as fire resistance, damage resistance, security and thermal insulation. 
     The use of a construction panel  200  having a wall member width of about 600 mm, at a thickness of about 50 mm, and having a height commensurate with typical residential buildings  9  at between 2-3 m), should result in a construction panel  200  having a typical weight of around 200-300 kilograms, and preferably around 250 kilograms. 
     It is envisaged that this weight could be relatively manually handled by a small team of around 2-5 construction workers, or handled with the assistance of a small crane-type mechanism, without the requirement of a large lifting mechanism such as a forklift or the like. It is envisaged that any of the panels described could include lifting formations (not shown), such as a hook or aperture to assist in lifting the panels by a crane or forklift type mechanism. These lifting formations would preferably be associated with the support members  220  or framing support members  230 . 
     In yet another embodiment shown in  FIGS. 22 and 23 , the construction panel includes securing formations  218  in the form of apertures for bolts extending through the wall member  210 . In another embodiment the securing formations  218  may be recesses or any other formation. These securing formations  218  are for allowing cladding elements  500  to be secured to the outer major face of the wall panel  210  as described below. 
     The framed construction panel  1200  (as shown in  FIG. 3 ) comprises a cast planar wall member  1210  defining two opposed major faces  1215 ; and a pair of partially embedded framing support members extending from one major face  1215  of the wall member  1210  proximate opposed edges of the wall member  1210 . 
     For the purposes of clarity, features of the framed construction panel  1200  that are similar to the construction panel  200  are numbered similarly, but have an additional number 1 inserted. However, as explained before, a framed construction panel  1200  does not include any support members  220 . 
     In one embodiment, the inside distance between the framing support members  1230  can be standardised at between 300 mm and 900 mm, and more preferably between 500-700, and most preferably around 600 mm. 
     However, in a most preferred embodiment of the construction panel  1200 , the width of the wall member  1210  will be standardised at 600 mm. This may allow increased architectural freedom of design, and reduced complexity in the number of and design of construction panels  1200 . This width also allows for increased manageability in installation (as will be described below), as well as reduced weight for increased ease of delivery and installation. 
     The length of a the wall members for the construction panels and/or framed construction panels could change depending on whether the construction panel and/or framed construction panels are for use in a wall or roof or floor construction. 
     In a preferred embodiment, the wall member  1210  is also between 1.5 and 3.5 meters long, and most preferably about 2.5 m. 
     In an even further preferred embodiment, the wall member  1210  has a thickness of between 30-100 mm, and most preferably about 55 mm. 
     It is envisaged that the wall member  1210  of the framed construction panel  1200  will include internal reinforcing inserts  1214  similar to that of the wall member  1210  of the construction panel  200 . These reinforcing inserts  1214  can also extend from the wall member as securing extensions  1216 . 
     The framed construction panel  1200  is expected to be similar to the construction panel  200  in all respects such as material, structure and dimensions, except that it does not include an extended portion  212 , but instead the framing support members  120  extend from the major face  1215  of the wall member  1210  at or proximate the edge of the major face  1215 . The reason for this will be explained below. 
     In one embodiment, the framed construction panel  1200  can also include securing formations  1218  for allowing cladding elements  500  to be secured to at least one major face (preferably the outer face) of the wall panel  1210 . 
     Further, the modular construction system  100  comprises a lintel panel  300  and a framed lintel panel  1300 . For the purposes of clarity, features of the lintel panel  300  that are similar to that of the construction panel  200  are referenced with similar numerals, but having the prefix “ 3 ” instead of “ 2 ”. Features of the framed lintel panel  1300  that are similar to that of the framed construction panel  1200  are referenced with similar numerals, but having the prefix “ 13 ” instead of “ 12 ”. 
     The lintel panel  300  and/or framed lintel panel  1300  is envisaged for use to extend along the floor line of the construction below a window opening, or along the roof line of a construction above a window opening. 
     The lintel panel  300  is envisaged to be similar in construction to the construction panel  200 , in that it comprises a cast planar wall member  310  defining two opposed major faces  315 , and at least one partially embedded support member  320  extending from one major face  315  of the wall member  310  proximate an edge of the wall member  310 , and wherein the wall member  310  extends outwardly along the plane of the wall member  310  from the support member  320  to define an extended portion  312 . 
     The difference between the construction panel  200  and the lintel panel  300  is that the wall member  310  has a length of approximately one tenth to two thirds of the typical length of a construction panel  200  or framed construction panel  1200 , to enable the lintel panel  300  to be secured adjacent one of the construction panel  200  or the framed construction panel  1200  to present an opening in a wall construction suitable for insertion of a window. 
     It is envisaged that the width of the lintel panel  300  and framed lintel panels  1300  from top to bottom (i.e. once installed) will be about 300 mm, but could be about 600 mm. It is further envisaged that the length of the lintel panel  300  will vary from 600 mm to about 3000 mm to comply with regulations. In order to span over large distances (e.g for larger windows), the lintel panel  300  can include pre-stressed reinforcing inserts  314 . It is envisaged that the lintel panel  300  can be used alongside the foot and the top of an adjacent construction panel or framed construction panel, to present an opening in the wall construction formed by the lintel panels  300  and construction panels  200  (or framed construction panels  1200 ) to present an opening towards the central region or middle of the construction panel  200  (as shown in  FIGS. 3 and 4 ). 
     It is envisaged that the lintel panel  300  may otherwise be similar to the construction panel  200  in respect of materials used, and the inclusion of reinforcing inserts  314 , securing extensions  316  which extend from a minor face  315  of the wall member  310  and securing formations  318  to which a suitably dimensioned cladding element may be secured. 
     In a preferred embodiment the lintel panel  300  will be rectangular or square in shape. Further, the lintel panel  300  can include support members  320  extending around all of its edges, or only one, and can have framing support members  30  extending along any of the remaining edges. The lintek panel can also include framing support members  330  extending along any edges that are not associated with support members  320 . 
     It is envisaged that the inside distance between a support member  320  disposed along one edge of the major face  315  of the wall member  310 , and a support member  320  or framing support member  330  extending along an opposed edge across the width of the lintel panel will be between 300 and 900 mm and most preferably 600 mm. 
     The features described in the lintel panel  300  are mirrored in the framed lintel panel  1300 , except that the framed lintel panel  1300  by definition does not include any support member defining an extended portion  312 . 
     A framed lintel panel  1300  according to the invention is similar in many respects to the framed construction panel  1200  in that it comprises a cast planar wall member  1310  defining two opposed major faces  1315 , with a pair of partially embedded framing support members  1330  extending from one major face  1315  of the wall member  1310  proximate opposed edges of the wall member  1310 . The inside distance between the framing support members  1330  is between 300 mm and 900 mm, and most preferably 600 mm. Alternatively, the width of the wall member  1310  is 600 mm to allow for modular design and/or construction. 
     The framed lintel panel  1300  differs from the framed construction panel  1200  in that the wall member  1310  has a length of approximately one tenth to two thirds of the framed construction panel  1200  or the construction panel  200 . It is envisaged that the width of the lintel panel  300  and framed lintel panels  1300  from top to bottom (i.e. once installed) will be about 300 mm, but could be about 600 mm. This enables the framed lintel panel  1300  to be secured adjacent a construction panel  200  or framed construction panel  1200  to present an opening in the wall construction formed by the framed lintel panel  1300  and adjacent construction panels  200  (or framed construction panels  1200 ) suitable for a window. 
     It is envisaged that the framed lintel panel  1300  will be similar to the lintel panel  300  in many respects, such as wall member dimensions, and the inclusion of reinforcing inserts  1314 , securing extensions  1316  and securing formations  1318 . However, the framed lintel panel  1300  has only framing support members  1330  extending around at least one of the edges of a major face  315  (preferably an inside major face) of its wall member  1310 , and no support members. 
     It is also envisaged that support members  220 ,  320  (where applicable) and/or framing support members  230 ,  330   1230 ,  1330  could extend only partially around any edge of the construction panels  200 , lintel panels  300 , framed construction panels  1200  or framed lintel panels  1300 . 
     It is envisaged that the support members  220 ,  320  (where applicable) and framing support members  230 ,  330   1230 ,  1330  (“the support members”) of the construction panel  200 , lintel panel  300 , framed construction panel  1200  and framed lintel panel  1300  (“the panels”) respectively, will each have batten support formations  222 ,  322 ,  1232 ,  1332  (“the batten support formations’) in the form of holes or slots for supporting support battens  440  on an interior surface of their wall members. The battens can then be used for supporting the mounting of drywall members  1040  for purposes of providing an interior surface (i.e. drywalling). 
     It will be appreciated that the batten support formations  222 ,  322 ,  1232 ,  1332  need not necessarily support battens  440  directly, but can do so through an intermediate formation such as a mounting clip  400  as is preferred. It is envisaged that the batten support formations  222 ,  322 ,  1232 ,  1332  of each of the support members  230 ,  330   1230 ,  1330  will be configured and dimensioned to be in alignment with each other when the panels  200 ,  300 ,  1200 ,  1300  are secured to each other as part of a floor construction  700 , wall construction  800 , or roof construction  900 . 
     In an alternative embodiment, a drywall member  1040  can be directly mounted to the support members. In a more preferred embodiment, the wall construction can comprise an insulative layer  450 , such as a polystyrene or similar layer, between the drywall member  1040  and the support members as shown in  FIG. 43 . 
     Preferably, the framing support members include similar batten support formations for supporting support battens. 
     The dimensions and corresponding weight of the construction panels  200 , framed construction panels  1200 , lintel panels  300  and framed lintel panels  1300  (“the panels”), allows the panels to be directly installed in position with a retaining nut and bolt arrangement as the panels are offloaded from a light delivery vehicle, using the light cranes typically found installed on the back of such light delivery vehicles. 
     In the applicant&#39;s experience in constructing prototype residential buildings, the panels could be installed to form wall constructions  800  as fast as they were offloaded from the delivery vehicle, if the structural members  1020  (i.e. skeleton) and supporting structural formation  1030  (i.e. foundation) of the construction were already in place. This ease of installation resulted in the walls of a residential house being assembleable in a day. Further, since the dimensions of each of the panels are manageable, this allows for construction in areas with restricted space (where, for example, large wall sections would not be manoeuvrable) 
     Further provided by the construction system  100  is a cladding element  500  for use with one or more selected from a construction panel  200  or framed construction panel  1200  as described. The cladding element  500  comprises a wall member  510  defining two opposed major faces  515  and having a height and width closely aligned with the dimensions of the panels. 
     The cladding element also includes securing formations  518  configured for alignment with the securing formations  218 ,  1218 ,  318 ,  1318  (“the securing formations”) of at least one of the panels  200 ,  300 ,  1200 ,  1300 . The securing formations of the cladding element  500  are for securing a major face  515  of the wall member  510  of the cladding element  500  to a major face of the wall member of one of the panels. 
     It is envisaged that the securing of a cladding element  500  to the outside of one of the panels  200 ,  1200 ,  300 ,  1300  will reinforce the strength of the panels. It will also serve to shield the panels from weather, and can also provide ornamentation of the building  1000 . In a preferred embodiment, the securing formations  518  are be bolt holes, but they could also be recesses for rawl bolt type securing mechanisms, or any other suitable formation. A further preferable feature of the cladding element  500  are stepped edge formations  540  at opposed ends of the cladding elements, and most preferably at those ends aligned operationally with the top and bottom of the cladding element  500 . The stepped edge formation  540  is configured and dimensioned to overlap with a stepped edge formations  540  of an adjacent similar cladding element  500  (as shown in  FIG. 22 ). This overlap will assist in weatherproofing the building  1000 . 
     Further provided in the modular construction system is a mounting arrangement  400  (as shown in  FIG. 9 ), suitable for use with at least one of the panels  200 ,  300 ,  1200 ,  1300 . The mounting arrangement  400  comprises a substantially planar non-conductive body member  410 . The body member  410  defines a pair of securing formations  420  disposed towards one end of the body member  410 . These securing formations  420  are suitable for securing the body member  410  between two adjacent support members  220 ,  320  (the support members”) or framing support members  230 ,  1230 ,  330 ,  1330  (“the framing support members”) of one of the panels in a stable manner. In a preferred embodiment, the securing formations  420  are bolt holes, but could be specially shaped holes or slots (not shown). The body member  410  further includes a pair of opposed engaging formations  430  in the form of opposed hook formations disposed towards an opposed end of the body member  410  from the securing formations  420 . The engaging formations  430  are configured and dimensioned to be suitable for engaging a support batten  440  (such as a commonly used “Rondo batten”) between them. 
     In a most preferred embodiment, the body member  410  is composed of an integrally formed plastic material, preferably moulded in an injection moulding process or the like. It is envisaged that the planar body member will be inserted between adjacent framing support members  230 ,  330 ,  1230 ,  1330  (as shown in  FIG. 6 ). This will provide a thermally and/or electrically insulative barrier between the framing support members  230 ,  330 ,  1230 ,  1330 . 
     Further provided in the modular construction system is a load bearing mounting arrangement  600  for enabling the mounting of heavier items off the panels  200 ,  300 ,  1200 ,  1300 . 
     The load bearing mounting arrangement  600  comprises a strengthened body member  610  including a pair of securing formations  620 , in the form of holes for bolts (as shown in  FIG. 10 ), towards one end of the body member  610 . The securing formations  620  are configured and dimensioned for rigidly securing the body member  610  to a support member  220 ,  320  or framing support member  230 ,  330 ,  1230 ,  1330 . The body member  610  further defines an pair of opposed engaging formations  630  disposed towards an opposed end of the body member  610  from the securing formations  620 , said engaging formations  630  being configured and dimensioned for providing wall fixing points for one or more selected from a wall mounted toilet; a wall mounted cupboard; a vanity unit; or the like. 
     It is envisaged that the construction panel  200 , the framed construction panel  1200 , the lintel panel  300  and the framed lintel panel  1300  described above can be used in a wide variety of configurations which complement each other. Particular configurations of these are now described generally as various types of “constructions”. However, it should be appreciated that any number and type of constructions as described below can be used in the assembly of a building  1000 . 
     According to another aspect of the invention, a wall construction  800  is provided (as shown in  FIG. 11 ). The wall construction  800  comprises a plurality of construction panels  200  disposed with the edges of the major faces  215  of adjacent planar wall members  210  abutting each other, with a structural member  1020  of a building  1000  disposed intermediate the support members  220  most proximate the abutting edges of the adjacent wall members  210 . The construction panels  200  are secured to the structural member  1020  by at least one securing arrangement  810 . The securing arrangement  810  can be a nut and bolt type securing arrangement, or a nail-type securing arrangement, a rivet type securing arrangement, or any other suitable securing arrangement. The wall construction  800  can further comprise a construction panel  200 , a framed construction panel  1200 , a framed lintel panel  1300  or a lintel panel  300  secured along an edge of a major face of one or more of the construction panels  200 . The means by which the panels are interconnected are explained below. It is envisaged that the wall construction  800  can also include other construction panels  200  or framed construction panels  1200 . 
     It is envisaged that such a wall construction  800  will be used to secure a pair of construction panels  200  to a structural member  1020  (as shown in  FIG. 1 ), while concealing the structural member  1020  from the outside to present a clean cement surface from the outside. It is further envisaged that such a wall construction  800  can be used at corners of buildings, to conceal the structural member  1020  from the outside. This may be helped by adjacent construction panels having extended portions  212  that have unequal distances on opposite sides, so that the extended portion  212  of one construction panel  200  will overlap the structural member  1020  more than the adjacent extended portion of the adjacent construction panel. 
     It is envisaged that lintel panels  300  could also be secured to structural members  1210  in the same way as construction panels  200  to form a wall construction. These lintel panels  300  could similarly be secured to any of the other panels, as long as the adjacent edges of their respective wall members are traversed by a framing support member  230 ,  330 ,  1230 ,  1330  as detailed below. 
     The lintel panels  300  and/or construction panels  200  may be used in a wide variety of configurations (as shown in  FIGS. 29-31 ) to extend their wall members around structural members  1020  to present a clean cement outside face to the outside of a building  1000 . 
     It is further envisaged that any of the panels could be secured to each other to form a wall construction  800  by inserting bolts through their framing support members  230 ,  330 ,  1230 ,  1330  to secure them to each other. For example, the framing support member  230  of a construction panel  200  could be secured to a framing support member  230  of an adjacent construction panel  200  directly. 
     A construction panel  200  could also be secured to an adjacent framed construction panel  1200  at those edges which have a framing support member  230 ,  1230  extending along them. In such a case, the minor faces  217 ,  1217  of the wall members  210 ,  1210  of the adjacent construction panel  200  and framed construction panel  1200  will abut each other, with the edge of their major faces  215 ,  1215  disposed proximate each other. 
     In the same way, the construction panel  200  can also be secured to an adjacent lintel panel  300  or framed lintel panel  1300 . However, in such a case, the lintel panel  300  or framed lintel panel  1300  would not be secured over the entire length of the construction panel  200 . 
     As shown in  FIG. 38 , where the framing support members  230 ,  1230 ,  330 ,  1330  of adjacent panels  200 ,  300 ,  1200 ,  1300  are secured to each other, a plurality of mounting arrangements  400  can be secured between or at the framing support members  230 ,  1230 ,  330 ,  1330 . 
     The mounting arrangements  400  are generally in horizontal alignment when used to construct a wall, so that elongate support battens  440  in the form of “Rondo” battens can be mounted to them. Drywall members  1040  or the like can then be attached to the support battens. When drywall members  1040  are attached to the support battens  440 , they will enclose a cavity between the wall member  210 ,  310 ,  1210 ,  1310  and the drywall members  1040 , suitable for insertion of insulative material  450 . 
     In the same way, mounting arrangements  400  can be mounted between or at a structural member  1020  and a support member  220 ,  320  to hold the support batten at its termination against the structural member  1020 . 
     A wall construction according to the invention can further comprise a load bearing mounting arrangement  600  as described above. The load bearing mounting arrangement  600  is also secured between or onto a support member  220 ,  320  or framing support member  230 ,  330 ,  1230 ,  1330 . 
     Construction panels  200  or lintel panels  300  may be mounted onto a lower supporting structural formation  1030  to form a wall construction  800 . The supporting structural formation  1030 , for example in the form of a foundation (as shown in  FIG. 12 , whether pre-cast or laid in situ), comprises an upper supporting surface  1032  defining an edge formation  1034 . A support member  220 , 320  of a construction panel  200  or lintel panel  300  is aligned to extend substantially horizontally from the wall panel  210 ,  310  and is supported by the upper supporting surface  1032 . The extended portion  212 ,  312  extends downwardly past the edge formation  1034  to below the upper supporting surface  1032 . 
     In a preferred embodiment, a small gap (shown as arrow “a” in  FIG. 12 ) is left between the wall panel  210 , 310  and the edge formation  1034  to allow for ventilation through the wall construction  800  from the bottom of the wall panel  210 , 310 . 
     The support member  220 ,  320  is secured to the supporting structural formation  1030  by a securing arrangement  810  in the form of a nut and bolt arrangement. The construction panels  200  or lintel panels  300  mounted on the supporting structural formation  1030  can be secured to any other of the panels  200 , 300 , 1200 , 1300  as described above, and may include mounting arrangements  400  and/or load bearing mounting arrangements  600  and/or cladding elements  500  secured to the construction panels  200  or lintel panels  300  as described. 
     A framed wall construction  1800  is provided by securing a pair of framed construction panels  1200  alongside each other with a securing arrangement  1810 . The securing arrangement  1810  can be in the form of a nut and bolt arrangement. The nut and bolt arrangement is inserted through holes or slots in the framing support members  1230  to secure adjacent framing support members  1230  on adjacent framed construction panels  1200  to each other. 
     In the same way that the wall construction  800  is securable to adjacent panels  200 ,  300 ,  1200 ,  1300 , the framed wall construction  1800  will also be securable to adjacent panels  200 ,  300 ,  1200 ,  1300 . Similarly, mounting arrangements  400  and/or load bearing mounting arrangements  600  are securable between or at the framing support members  230 ,  1230 ,  330 ,  1330 . The framed construction panels or lintel panels  1200 ,  1300  can be secured to any other of the panels  200 , 300 , 1200 , 1300  as described above, and may include mounting arrangements  400  and/or load bearing mounting arrangements  600  and/or cladding elements  500  secured to the framed construction panels  200  or framed lintel panels  300  as described. 
     The basic panels  200 ,  300 ,  1200 ,  1300  may be used in similar ways to provide a wall construction  800  and framed wall construction  1800  as described above, as well as floor constructions  700 , framed floor constructions  1700 , roof constructions  900  and framed roof constructions  1900 . 
     However, it is envisaged that where the panels are created for use as a roof constructions  900  or framed roof constructions  1900 , the cast planar wall member can be moulded specially to resemble a plurality of roof tiles at least on the outer surface thereof. In this way, a roof constructions  900  or framed roof constructions  1900  can look like an ordinary roof. 
     A floor construction  700  comprises a supporting structural formation  1030  and at least one construction panel  200 . The supporting structural formation  1030  comprises an upper supporting surface  1032  defining an edge formation  1034 . The construction panel  200  is disposed with its extended portion  212  abutting against the upper supporting surface  1032  to support the wall member  210  vertically. The support member  220  of the construction panel  200  abuts against the edge formation  1034  of the supporting structural formation  1030 , to seat firmly against it. The wall member  210  or the support member  310  can be secured to the supporting structural formation  1030  by a securing arrangement  710  such as a nut and bolt arrangement, a rivet arrangement (not shown) or rawl bolt-type arrangement. 
     A plurality of construction panels  200 , disposed alongside each other, can be engaged with the supporting structural formation  1030 . Each of the adjacent construction panels  200  can be secured to each other as described above. It is envisaged that framed construction panels  1200  can be secured end- to end alongside the construction panels  200  as described above to extend the floor area of the floor construction  700 . it is envisaged that construction panels and framed construction panels used in a floor construction will include securing extensions  216 ,  1216  as described above, that extend from a minor face  217 ,  1217  of the construction panel  200  or the framed construction panel  1200  (“the construction panels’). The construction panels are disposed end to end, with their respective adjacent ends being supported on a supporting structural formation  1030 . The wall members  210 ,  1210  of the panels  200 ,  1200  need not abut with each other, and a small gap can be left between them (as shown for a similar framed floor construction in  FIGS. 22 and 23 ). The securing extensions  216  extend into the gap between the panels, and can be held in place by a settable cementitious mix which can be cast in place in situ. In this way, the panels  200 ,  1200  are secured in place as a floor construction  700 . 
     A floor construction  700  on an upper level of a building  1000  may also be a roof construction  900  for a lower level of the building. In such a case, it is envisaged that the floor construction  700  could also include mounting arrangements  400  and load bearing mounting arrangements  600  secured to the support members  220 . 
     The mounting arrangements  400  can act as mounting points for support battens  440  as described above, and drywall members  1040  in the form of as ceiling boards can be mounted to the support battens  440 . Further, the load bearing mounting arrangements  600  can be used for supporting larger items, such as heavy lights (not shown) and the like. 
     Where additional rigidity is required for the floor, a pair of construction panels  200  or framed construction panels  1200  may be secured to each other with their major faces having support members extending therefrom facing away from each other (i.e. with the clean major faces abutting each other). They can be secured to each other by inserting a securing arrangement  710  such as a nut and bolt arrangements through securing formations  218 ,  1218  to double the thickness of the wall panel. The support members  220  and framing support members  1230  can then be used to mount drywall members  1040  in the form of flooring (not shown) above the wall members  210 ,  1210 , and ceiling board below the wall members  210 ,  1210 . 
     According to another aspect a framed floor construction  1700  is comprised of a supporting structural formation  1030 , said supporting structural formation  1030  supporting a plurality of framed construction panels  1200  disposed alongside each other and secured to each other at their framing support members  1230  by a nut and bolt arrangement similar to that described for the framed wall construction  1800 , and with the framing support members  1230  of adjacent framed construction panels  1200  abutting each other. The adjacent abutting framing support members  1230  are secured to each other by at least one securing arrangement  1710  in the form of a nut and bolt arrangement. 
     The framed floor construction  1700  is similar to the floor construction in many respects, including the provision of securing extensions  1216  that can be cast into place in situ. In one embodiment and similar to the floor construction  700  described above, the abutting major faces of adjacent wall members  1210  can be secured together to increase the rigidity of the framed floor construction  1700 . 
     Construction panels  200  and framed construction panels may similarly be used to provide a roof construction  900  and/or a framed roof construction  1900 . 
     To provide a roof construction  900 , a plurality of construction panels  200  as described above are provided. In one embodiment, they are disposed with the edges of the major faces  215  of adjacent planar wall members  210  of construction panels  200  proximate each other. A structural member  1020  is held intermediate the support members  220  most proximate the abutting edges of the adjacent wall members  210 . The construction panels  200  are also secured to the structural member  1020  by means of a securing arrangement  910 , most preferably in the form of a nut and bolt arrangement 
     The roof construction  900  further comprises a plurality of construction panels  200  disposed with an edge of the major faces  215  of adjacent wall members  210  proximate each other, and with the minor faces  217  of adjacent wall members  210  abutting each other. 
     The minor faces of the wall members  210  of construction panels  200  can abut each other, or the wall members can be disposed to overlap each other as shown in  FIGS. 59 and 60 . In such a configuration, the extended portions  212  are used to overlap with the lower adjacent similar wall member  210 . 
     It is envisaged that in such a configuration the adjacent wall members  210  to the side of the will be sealed against each other by a scaling arrangement described below. 
     The roof construction  900  can also further include at least one framed construction panel  1200  as described below, secured to the construction panel  200  in a typical manner described above. The roof construction  900  further includes at least one securing arrangement  910  for securing a framed construction panel  1200  to the construction panel  200  at their adjacent support members  220 ,  230  &amp;  1230 . They can also be sealed against each other as described below. 
     A framed roof construction  1900  (shown in  FIG. 57 ) comprises a plurality of framed construction members  100  as described above disposed with the framing support members  1230  of the adjacent framed construction panels  1200  abutting each other; and wherein the adjacent abutting framing support members  1230  are secured to each other by means of a securing arrangement  1910 . It is envisaged that the gap between the respective wall members  1210  will be sealed by one or more sealing arrangements as described below. 
     It is envisaged that such a roof construction  900  and/or framed roof construction  1900  can also include one or more locating members  940 , for securing to a roof truss  1036  so that the support members  220 ,  230   1230  can be located against these to prevent the construction panels  200  and/or framed construction panels  1200  from slipping downwardly off the roof truss  1036  The locating members  940 , may also provide securing formations (not shown) for securely coupling the construction panels  200  and/or framed construction panels  1200  to one or more roof trusses  1036 . 
     In one preferred embodiment, the roof construction  900  and/or framed roof construction  1900  can include fastening means (not shown) in the form of a collar tie  930  for fastening the roof construction  900  and/or framed roof construction  1900  to a wall construction  800  or framed wall construction  1800 . Further, the roof construction  900  includes mounting bracket (not shown) for mounting the roof construction  900  to one selected from an adjacent wall construction  800  and an adjacent framed wall construction  1800 . 
     Both the roof construction  900  and the framed roof construction  1900  have similar features. For instance, both of them include mounting arrangements  400  as described above secured between or at a support member  220  or framing support member  1230 . Both of them can mount support battens  440  on their mounting arrangements  400 , and both of them can support drywall members  1040  in the form of ceiling board from their support battens  440  similarly to that described for the floor construction  700  and the wall construction  800 . Both of them can include load bearing mounting arrangements  600  mounted to the support members  220  and framing support members  1230  as described above. Both of them can also include a cladding element  500  secured to a major face  215 ,  1215  (and preferably an outer major face) of their wall members  210 ,  1210 . 
     Where additional rigidity is required, it is envisaged that the wall members  210 ,  1210  of a pair of construction panels  200  or framed construction panels  1200  may be secured to each other with their major faces  215 ,  1215  abutting each other as described above for floor constructions. The wall members can then be secured to each other by a securing arrangement  910 ,  1910  such as a nut and bolt arrangement. 
     It is further envisaged that the roof construction and framed roof construction can include a lintel panel  300  or a framed lintel panel  1300  secured to the construction panel  200  or framed construction panel in a similar fashion to that described for the wall construction  800 . 
     A framed roof construction  1900  and a roof construction can also be secured to each other at adjacent framed support members  230 ,  1230 . 
     In one embodiment, it is envisaged that the construction panels  200  and/or the framed construction panels  1200  can include wall members  210 ,  1210  that have been moulded to look like traditional roofing (for example in the shape of laid roof tiling or the like). In this way, the buildings made using the construction panels will not be as easy to distinguish from traditional housing, if conformity of aesthetics is important. 
     It is further envisaged that in another embodiment, any of the panels (framed lintel panel  1300 , framed construction panel  1200 , cladding element  500 , lintel panel  300 , and construction panel  200 —“the panels”) could further comprise a heating arrangement  2000  as shown in  FIG. 40-42 . The heating arrangement  2000  is preferably integrally formed with the panel, and comprises a length of piping  2010  suitable for the passage of heated fluid, with an inlet passage  2020  and an outlet passage  2030  to and from the panel. The piping is preferably configured as several lengths of parallel pipes connected to each other in an S-type or coiled-type formation, and is supported by a piping support frame. 
     It is envisaged that heated water from a building&#39;s geyser could be piped through the piping  2010  to heat up the construction. Alternately, thermal energy absorbed by the panels could be transferred to water in the piping  2010 , to reduce water heating costs and keep the construction cool. 
     In a preferred embodiment, the support members of the various panels and framed panels can be made of thin gauge galvanised sheet metal that has been bent to various cross sectional shapes, and preferably having a channel section, to stiffen them structurally. In this format, the cost and weight of the panels may be reduced. In this regard, a gauge of between 0.3 and 3 millimetres, and preferably about 0.5 millimetres is preferred. 
     In another preferred embodiment shown in  FIG. 44 , the framed or unframed wall, roof or floor constructions can include a sealing arrangement  2100 . Each of the framed or unframed construction panels  200 ,  1200  and/or lintel panels  300 ,  1300  includes a recess  2210  along an edge of the wall member  210 ,  310 ,  1210 ,  1310  and also extends along a major face opposed to the major face from which the framed or unframed support members extend as shown in  FIG. 63 . The recess could also extend along a free edge of the major face from which the support members extend as shown in  FIG. 39 . Preferably, these recesses form a larger combined recess when placed adjacent a similar recess from another panel. 
     In operation, it is envisaged that the gap between two panels could be sealed by a sealing member  122  such as an elongate rubber or plastic member that can be pushed into this enlarged recess, or between the recess and an adjacent flat surface. It is further envisaged that the gap between panels formed by the enlarged recess can be filled up by a settable sealing filler composition  1230 , which can also be waterproof. In this way, the settable sealing filler composition can be smoothed before setting to present a smooth face for painting or otherwise instead of a ridge. 
     In another embodiment, as shown in  FIG. 64  the recess could extend along one or more minor faces of the wall members. When the minor face is located adjacent similar minor face, the adjacent recesses create a larger enclosed chamber  1240 . If the outside of the construction is wetted (for example by rain), water surface tension could draw water into the small gap between the wall members by capillary action. However, when the gap between the wall members is widened at the chamber, it is expected that such a widening will at least partially reduce the capillary action drawing water between the wall members. It is envisaged that a sealing member  122  could be used in addition to seal the gap at an inner side of the chamber  1240 . 
     As will be appreciated, the construction of a building  1000  may be facilitated by the using at least one, if not all, of the modular components described above, including a wall construction  800 , a floor construction  700 , a roof construction  900 , a framed wall construction  1800 , a framed floor construction  1800 , and a framed roof construction  1900  (the modular components”) as described above, all as part of a modular construction system  100 . 
     In a most preferred embodiment of the construction system, at least some or all of the modular components will have standardised sizes. In particular, it is envisaged that the width fo the wall members will be standardised. The width will be standardised at between 300-700 mm, more preferably between 500-650 mm, and most preferably at about 600 mm. 
     In an alternative embodiment, it is envisaged that the inside distance between a support member and/or framing support member, and a support member and/or framing support member located at an opposed edge of the major face, can also be standardised. However, this is more difficult to use as a system, and may not result in buildings that are as aesthetically desirable. 
     The construction system described herein will allow relative freedom of architectural design, relative ease of erection, relatively low cost and structural integrity. It is envisaged that houses using the modular construction system  100  may be designed architecturally, while having the modular nature of the system in mind. Once the building  1000  has been designed, it is envisaged that at least some of the panels and accessory components described above will be delivered as a modular construction kit for erection on site. Alternatively, such a modular construction kit may be sourced at building hardware suppliers as individual standard parts, for assembly according to an architectural drawing. 
     Further, it will appreciated that the modular construction system may comprise additional accessories, but still utilise the same construction principles as set out above. 
     By using construction panels and framed construction panels as described, a construction can also be built that is relatively strong in relation to other lightweight cladding, such as weatherboard. This is because the construction panels and framed construction panels not only cover the area between the structural members  1020  and/or roof trusses  1036 , but also strengthen their support. It is envisaged that the construction panels and/or framed construction panels will be at least partially load bearing in their own right in operation. The cast concrete or cement mixture of the wall members are strong in compression, and help prevent buckling of the structural members, while the support members are strong in tension. In this way, the construction panels and framed construction panels help with the bracing of the building, and can allow for smaller structural members to be used in the construction of a building. Such features are especially useful in extreme situations such as earthquakes, where a building can be subjected to loadings that it was not designed for. 
     Where in the foregoing description reference has been made to elements or integers having known equivalents, then such equivalents are included as if they were individually set forth. 
     Although the invention has been described by way of example and with reference to particular embodiments, it is to be understood that modifications and/or improvements may be made without departing from the scope or spirit of the invention. 
     In addition, where features or aspects of the invention are described in terms of Markush groups, those skilled in the art will recognise that the invention is also thereby described in terms of any individual member or subgroup of members of the Markush group.