RAISED FLOORING SYSTEM AND METHOD

Abstract: A flooring system (10) is disclosed which utilizes prefabricated base modules (12) installed in side by side relationship. In one embodiment, the modules (12) have base panels (30) with elongate corrugations (32) which stiffen the panels (30) in one direction. Pedestal strips (34, 35) with elongated corrugations (36) are secured to the base panels (30) with the corrugations (32, 36) of the strips (34, 35) and panels (30) orthogonal to one another. The strips (34, 35) include a series of upstanding pedestals (38, 40). The pedestal (38) and end half pedestals (40) are positioned such that when the modules (12) are installed they provide a geometric pedestal array. The pedestals (38, 40) are notched (46) to receive snap in panels (16, 22) which collectively define fluid conduit, power cable and communication chases (24). In another embodiment, the pedestals (38, 40) include a plurality of axially aligned cylindrical sections (116, 118, 120) in a stepped configuration. Working floor panels (28) are mounted atop the pedestals (38, 40). In one embodiment the power cable, communications and work floor panels (16, 22) have knock outs (64) which are readily removable to provide access to the chases (24). A heat pump (85) is connected to supply, return, and condensate conduits (25, 26) installed in the conduit chase to supply cooling water from the cooling tower (86).

Description: RAISED FLOORING SYSTEM & METHOD This invention relates to an accessible raised floor system for use in office buildings or the like. Background of the Invention Historically, building owners have not had to deal with tenant requirements for supplemental cooling, power and cabling, with the exception of special purpose computer or trading rooms. These special purpose rooms have been dealt with almost as if they were separate structures. Unless a building was occupant owned, a tenant had to deal with these requirements. Now, due to the changes in market economies, frequently landlords are forced to solve problems of substantial increases in power requirements, additional cooling and cable distribution. As the use of office space has evolved since the development of personal computers (PC), there has been an escalation in the need for and frequency of reorganization and re-configuration of office space. Enormous amounts of effort and study have gone into the planning and design of office space in order to render its use more flexible and sympathetic to user functions. Most of these efforts have been concentrated in modular space planning and systems furniture engineered to accommodate PCs. Modern day office requirements have placed burdens on heating/cooling, electrical power distribution and cabling systems which were never anticipated when even the most modern office buildings were built. The rates of office reorganization and reconfiguration have escalated from about 10% to 15%, per year U.S. averages, in the early 1990's, to 35% to 50% in the mid 1990's, with some companies and industries exceeding 100% per year. The technological life expectancy of local and wide area networks cabling and connectors is currently about eighteen months to two years. Physical concentrations of PCs and other electrical enhancements such as facsimile machines, copiers, printers, scanners, and in particular, the personnel operating the equipment, have placed extra-ordinary burdens on the most sophisticated and powerful heating, ventilating and air conditioning systems. These concentrations of equipment and personnel generated heat are most frequently offset by increasing the velocity of chilled air from overhead diffusers, usually at the expense of other areas, and to the discomfort of personnel. Traditionally and technically there have been roughly seven predominant methods of distributing heating/cooling, electrical power and cable in horizontal planes from vertical sources, whether from a building core or from other vertical chases. They have been: 1) Through a ceiling plenum; 2) Through the use of conventional raised flooring systems, as have been used in computer rooms; 3) In-floor conduits or proprietary ducts; 4) A combination of plenum and under-floor distribution through rigid conduit into poke-through outlet boxes to the floor above; 5) Through stud and drywall partitions and/or column enclosures; 6) Through power poles; and, 7) Through system furniture panels. All of these systems require the feeding of electrical power wiring and cabling through studding, systems furniture, in-floor conduit or ducts. Convenient, horizontal retro-feeding of electrical power wiring or cabling through finished stud and dry wall partitions is particularly difficult, costly, disruptive and sometimes, impossible unless sufficient conduit has been pre-installed. The most flexible and common of these systems has been the use of ceiling plenums. This plenum approach has severe difficulties and limitations. All work must be performed from ladders or scaffolding. Most connections to work surfaces must be through stud and dry wall partitions or so-called power poles vertically to work surface or floor levels and then distributed horizontally using more stud and dry wall partitions, systems furniture or in-floor conduit or duct. Once additional power is in place, an undesirable result is a comparable increase in generated heat, requiring more cooling. Typically such additional heat loads have not been anticipated nor dealt with in the base building design or construction. Localized cooling solutions are being dealt with by trying to increase the output of existing systems such as pushing more air by using higher blower velocities. Increases in air velocities result in increased noise levels and are really nothing more than cycling air more rapidly through the base system which has a finite heat absorbing capacity. There have been proposals for retrofitted auxiliary flooring systems all of which suffer distinct disadvantages. With one proposal, a lower forced air plenum would be provided for conducting supplemental cooling air to a workspace where heat generating electronic equipment has been installed. Other flooring components would be formed to define enclosed ducts above the air plenum for power cables and communication conductors. It is necessary that these enclosed ducts have imperforate walls to prevent spread of an electrical fire. In the event of such a fire, the egress of the supplemental conditioning air from the plenum would obviously be undesirable. It is for these reasons that building codes require all wiring be encased in fire resistant conduit. Prior proposals for supplemental flooring systems have all been excessively complex such that they required skilled installers for disproportionately long periods of time. Further, prior proposed systems have not been fully modular and had inadequate provision for access to service lines extending through such a system. Accordingly, there is a need for a simple to install supplemental flooring system which will quickly and flexibly accommodate power cable, communication wiring, and supplemental cooling to meet the demands of both current day and future electronic equipment. Summary of the Invention The flooring system of the present invention utilizes prefabricated base modules which are preferably about 3' by 3' in horizontal dimension. These modules are installed in side by side relationship on an existing building floor. The modules are interconnected. In a metal embodiment the interconnections are accomplished by sliding key tongues into key slots of adjacent modules. In a plastic embodiment pedestals for supporting panels have depensions which interlock with the base modules. In the metal embodiment, leveling to accommodate irregularities of the building floor is achieved by adjusting leveling screws threaded into base panels of the modules. The base panels of the metal embodiment each have elongate corrugations which stiffen the panel in one direction. Pedestal strips with their own elongated corrugations are secured to the base panels with the corrugations of the strips and panels orthoganal to one another so that together they provide a stiff module base. The pedestal strips have a series of upstanding pedestal portions. The pedestal portions are open sided, truncated pyramids each of which has oppositely, inwardly sloping side surfaces and a flat top surface. In the preferred embodiment further strips are secured to the base panel in orthogonal relationship to the pedestal strips. The further strips have upstanding portions which nest within the pedestal portions to close the sides of the pedestal portions. The metal pedestal strips include end half pedestals at the juncture of a pedestal with a side edge of the base panel. When the modules are installed these half pedestals are butted together such that together they form a structure corresponding to full pedestals formed intermediate the ends of the strips. Similarly, four corner pedestals together form a structure corresponding to a full pedestal. The tapering sides of the metal pedestals are notched to receive snap in steel panels. The snap in panels collectively define a power cable chase floor and a communications chase floor each above a base floor defined by the module base panels. With the metal embodiment, the panels, like other components of the system, are preferably steel (1) to protect such things as data cabling from power cable induced magnetic fields, (2) for structural strength, and (3) for fire resistance. The plastic embodiment has a considerable weight advantage over steel, making it easier to install and highly advantageous in those situations where floor loadings may be a problem. With the plastic embodiment, pedestals in the form of axially aligned, cylindrical segments of diminishing diameters from bottom to top are provided. Each pedestal has a set of spaced arcuate depensions which fit in mating holes in the base panels to lock the panels together. Panels for chase panels with arcuate cutouts rest atop flat horizontal surfaces between adjacent, cylindrical pedestal segments. Working floor panels are mounted atop the pedestals. Preferably these working floor panels are reinforced, steel clad, fire resistant plywood or other suitable material to provide an appropriate base for customary floor coverings such as carpet or tile. The power cable, communications and work floor panels of the metal embodiment each have knock outs which are readily removable to provide access to cabling and wiring supported on the floors. They also provide access to fluid conduits supported on the base floor. One of the outstanding features of the invention is the use of water conduits in combination with heat pumps for supplemental heating and cooling. Supply, return and condensate conduits are installed on the base floor to conduct supply water at temperatures of about 60° to 90° F. A preferred source for the cooling water is a typical cooling tower of the type which is commonly mounted atop an office building. The use of water totally obviates the need for hermetic barriers between a cooling plenum and power and communication cable chases. Moreover, since the water used is cool no pipe wrap is required. Accordingly, the objects of the invention are to provide a novel and improved supplemental flooring system and methods of installing and operating such a system. Brief Description of the Drawings Figure 1 is a fragmentary perspective view of a portion of a metal flooring system made in accordance with the present invention; Figure 2 is an exploded view of the metal embodiment of the present invention; Figure 3 is a sectional view of an assembled flooring system of Figure 1; Figure 4 is a sectional view of a portion of the flooring system of Figure 1 with a partition wall mounted atop it; Figure 5 is a plan view of two metal snap in panels used to form cable and communication floors; Figure 6 is a plan view of metal modules of the present invention; Figure 7 is a fragmentary perspective view of metal base modules of the present invention showing the mechanism for locking the modules together; Figure 8 is a fragmentary sectional view of a cantilevered floor portion and a supplemental pedestal of the metal embodiment; Figure 9 is a plan view of an apertured service line floor panel with a reinforcing member shown in a position it passes through prior to being inserted in and secured to the panel; Figure 10 is a perspective view of a central portion of a finished service line floor panel with parts broken away and removed for clarity of illustration; Figure 11 is a fragmentary, perspective view of a keyed section of the reinforcement of Figures 9 and 10; Figure 12 is a sectional view of the plastic embodiment in an assembled condition; Figure 13 is a fragmentary, exploded view of a plastic pedestal and portions of base panels of the plastic embodiment; Figure 14 is an enlarged, fragmentary sectional view of an interconnection of a plastic pedestal with a plastic base panel; Figure 15 is an exploded view of components of the plastic embodiment; and, Figure 16 is an enlarged plan view of a section of an assembly of the plastic embodiment with work floor panels removed. Detailed Description of the Preferred Embodiment I. The Metal Embodiment In Figure 1, a flooring system made in accordance with the present invention is shown generally at 10. The system includes a modular base supporting supply and return water conduits 14 and a condensate conduit 15. Cable floor panels 16 positioned above the conduits 14,15 form a floor for cable chase 18 supporting electrical cables and wires 20. Communication panels 22 7 define a floor beneath a communication chase 24. The communication chase houses communication cable 25 and data conductors 26 for such purposes as local area network interconnections. A modular work floor 28 is mounted atop the modular base elements. The pictured work floor components 28 are ! ' fire resistant plywood sheets which are steel clad for rigidity and fire resistance. With the preferred construction, the overall depth of the system is approximately 4" with the lower water conduit chase having a vertical clearance of 1 - 3/8", the cable chase having a vertical clearance of 1-1/8" and the communication chase having a vertical clearance of 5/8". Referring now to Figure 2, the preferred embodiment of a base module 12 is shown in exploded form. The base module 12 includes a base panel 30 having sets of stiffening ribs 32 formed therein. Central and edge pedestal strips 34,35 are provided. The central strips 34 are twice the width of the edge strips 35 so that when two modules 12 are abutted, two abutting edge strips will have a transverse dimension corresponding to the transverse dimension of a central pedestal strip 34. The pedestal strips 34,35 have longitudinal stiffening grooves 36. The base panels 30 and the pedestal strips 34,35 are welded together with their grooves 32,36 orthoganal to one another to provide bidirectional stiffening of the modules. The central pedestal strip 34 includes central and end pedestals 38,40. The central pedestals 38 have oppositely tapered sides 42,44 and a flat top 45. In a system of the illustrative overall 4" height, the pedestal 38 at its base will be 4" square, while the top will have a width of 4" and a dimension longitudinal of the strip of 3". Each tapered pedestal side 42,44 is notched at 46 to receive projections 48 of the cable and communication panels 16,22 in snap-in supporting relationship. Each end pedestal 40 includes a vertical support side 50 which butts against a like vertical support side 50 of an adjacent module 12, as best seen in Figure 3. As will be apparent from an examination of Figure 3, two of the end pedestals 40 when abutted together provide a pedestal corresponding to a central pedestal 38. The end strips 35 have half central pedestals 52 and quarter corner pedestals 54. When a set of modules 12 are installed, an abutting pair of the half central 8 pedestals 52 together provide a pedestal corresponding to the central pedestals 38, while four of the corner pedestals 54 in abutting relationship also collectively provide a pedestal corresponding to the central pedestals 38. The half and corner pedestals 52,54 have notches 55 which when installed collectively provide notches equivalent to the notches 46. In the metal embodiment as shown in Figure 2, further strips in the form of cross strips 56 are provided. The cross strips 56 have central and end closures 58,60. The central and end closures 58,60 of the cross strip respectively nest within the central and side pedestals 38,52. The central and side closures 58,60 have vertical side walls 62 with upwardly and oppositely tapered edges such that the side walls 62 close side openings in the central and edge pedestals 38,52. Accordingly, the space within each pedestal in the preferred embodiment is enclosed except for the projection receiving notches 46. With this construction it is anticipated that the disclosed flooring system will satisfy many, if not most, building code requirements without further electrical conduits enclosing, for example, the electrical cable 20. As shown in Figures 1, 2 and 5, the snap-in panels 16,22 each include a square knock out portion 64 which may be removed to gain access to service lines below the panel and to receive a standard 4 x 4 junction box for feeding, for example, a connection to the cable 20. To gain access to the three service chases, one simply removes screws 66 securing a floor panel section 28 to the pedestals and lifts the then disconnected floor panel out of the way. Where access is desired through one of the cable floor panels, the communication floor panel above it is removed by prying its projections 48 out of the notches 46 with a screw driver or other suitable prying tool. Each knock out 64 includes four circular knock outs 68 which may be removed if one only needs to install a standard circular fitting. For example, a circular knock out will be removed to bring a cable connection through a standard fitting positioned in an aperture provided by removing one of the knock outs 68. A service line floor panel 69, Figures 9 and 10, is substituted for the removed floor panel 28 when service lines are to be fed through the floor. Metal Embodiment Installation With the preferred construction the modules 12 are each approximately 3' square, so that they are small and light enough that a single installer can handle them. The modules 12 are positioned in abutting relationship atop the floor of an existing building. Keys 70, Figure 7, are slid into key slots 72 to secure adjacent modules together. If there is unevenness in the floor, leveling screws 74, Figures 3 and 4, threadedly carried by the base panels are adjusted. For perimetral areas where full modules 12 will not fit, half and quarter modules 74,75 are provided, Figure 6. If a half or quarter module will not fit because, for example, the space between in the installed modules and a wall or column is less than 18", cantilevered floor panels are used. In the preferred 3' x 3' module arrangement, 36" x 54" panels are provided. Such panels can be scribed and cut to a appropriate length at a job site to provide an appropriately dimensioned cantilevered portion. Where required supplemental pedestals 78, Figure 8, are positioned to support the cantilevered portions. In a system of the size we have described, the supplemental pedestals are hollow, metal 3.5" cubes. Once the modules have been positioned, interconnected and leveled, the installer has provided a geometric array of pedestals which are preferably 12" apart center to center as measured both longitudinally and transversely of the room in which the system is being installed. Next, the supply, return and condensate conduits 14,15 are installed over the base floor. Once these water conduits are installed, the cable panels 16 are put in place with their projections 48 snapped into the notches 46,55 of the pedestals. Knock outs 64 or 68 are removed as required to interconnect the conduits 14,15 with a heat pump 85 and a source of suitable water, such as a building cooling tower 86, Figure 1. The heat pump obviously will be installed at an appropriate time and at a location suitable to provide supplemental cooling for a work space in which employees and heat generating equipment will be present. Next, electrical power cables or wires 20 are laid on the power cable panels and in the power cable chase 18. Communication panels 22 are now snapped into place and knock outs removed to provide appropriate connections with the power 10 cables and wires 20 and the conduits 14,15. Communication conductors such as telephone lines and local area network connections 25,26 are now positioned in communication chase 24. The floor panels 28 are positioned and secured by the screws 66. In the process of positioning the floor panels 28, service line floor panels 69 are used to feed connections from the conduits, cable and communication lines to the work space above the work floor being formed. Further, where perimetral portions are exposed, end panels 80 equipped with knock outs 82 are installed. A retrofitted floor system installed in the described manner provides a system capable of fulfilling modern day and future service line requirements with minimal reduction in available space for equipment and personnel. The Reinforcement Panel 69 Referring now to Figure 9, the service line panel 69 includes a central, preferably 4" square, aperture 88. In order to provide a service panel 69 of sufficient structural strength and rigidity a reinforcement 90 is provided. The reinforcement 90 is formed from a single piece of steel to include three side sections 92 and two half side sections 94. As indicated by the showing in Figure 9, these sections are interconnected in a fashion which permits relative movement such they may be folded into the shape shown in Figure 9 to enable insertion into the aperture 88. Once inserted, upper and lower flanges overlie the top and bottom of the service line panel 69. The lower flanges 96 are secured to the surface panel 69 as by screws not shown passing through apertures 97 in the lower flanges. The side sections 90,92 define recessed channel portions 98 for support of an insert such as a junction box. The half side sections 94 are keyed at 99 for reinforcement at their juncture when installed as is best seen in Figures 10 and 11. II. The Plastic Embodiment Referring to Figures 12 - 16 and Figure 12 in particular, an assembled flooring system utilizing plastic components is shown generally at 110 in Figure 12. A plurality 11 of base panels 112 are provided. Each base panel has four relatively large through apertures 114 which are provided to minimize weight and material consumed. A plurality of pedestals 115 are provided. The pedestals include base, central and top conical segments 116,118,120. The conical segments are axially aligned and contiguous to define support surfaces for panels. More specifically an annular surface 122 which is flat and horizontal when in use interconnects the base and central segments for support of cable floor panels 16'. Similarly, a flat annular surface 124 interconnects the central and top segments 118,120 for support of communication panels 22'. A flat top surface 125 functions as a support surface for work floor panels 28' which rest atop the pedestals. As is best seen in Figure 13, each pedestal 115 includes four arcuate depending segments or tabs 128. The tabs snap into and interfit with complementally contoured recesses 130 in the base panels. The tabs are of a vertical dimension equal to the thickness of the floor panels. As is best seen by reference to Figure 15, there are four tabs 128 which, depending on their location, engaged one, two or four of the base panels 112. Thus, a pedestal mounted atop the center of a panel has all four tabs retentively engaged by the same panel. Where a pedestal bridges the joint between two adjacent panels as at 132 in Figure 15, two projections engage each of the two panels Where the panel is mounted at the juncture of four corners as at 134 in Figure 15, the coaction of the tabs and their complemental recesses 130 function to secure the four corners in appropriate relative orientation. When a pedestal 15 is mounted along the edge of a panel array it will engage one, two or three panels and one or two of its projections will be outboard of the array. Since the projections have a vertical height equal to the thickness of the panels, the outboard projections will engage the supporting building floor and maintain the pedestals in a vertical orientation. The cable floor and communication panels 16 ',22' are each flat, plastic sheets with cutouts to receive appropriate portions of the pedestals 115. Thus, the cable floor panels 16' each have a central circular aperture 136 sized to fit around the central conical segment 118. In addition, the cable floor panels 16' have corner cutouts 138, 12 each of which constitutes a quarter of a circle such that four adjacent panels 16' collectively surround a central conical segment 118 of a single pedestal 115. The cable floor panels 16' have four semi-circular cutouts 140 located along each side midway between two corners. These semi-circular cutouts 140 permit adjacent panels to be positioned side by side and supported by a common pedestal midway between their respective corners. The communication panels 22' have similar central holes 142 and corner side cutouts 144,146. The holes and cutouts of the communication panels 22 are sized to fit around the top conical segments 120 such that the communication panels are supported on the surfaces 124 of the pedestals 115. When utility lines such as cables or fluid conduits are to be extended from one of the chases upwardly into a work area above the floor assembly, panels are removed. The removed panels are replaced by panels each having preformed apertures. The preformed apertures are sized to receive the upwardly extending utility lines. Alternately, apertures are cut in the removed panels which are then returned to their original positions in the assembly. Although the invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction, operation and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.

Claims: 13 Claims What is claimed is: 1. A flooring system for installation on a building floor of an existing building comprising: a) a plurality of pedestal elements for mounting in a geometric array upon such building floor, each of the pedestals including sets of panel supporting surfaces; b) a set of power cable support panel elements each supportable by a plurality of such surfaces for support by the pedestal elements to provide a cable floor above and spaced from such building floor; c) a plurality of communication conductor support panel elements each supported by another plurality of such surfaces at a level above the cable support elements to provide a conductor floor above and spaced from the cable floor; and, d) a plurality of working floor panel elements for support by the pedestal elements to provide a working floor surface above and spaced from the conductor floor. 2. The system of claim 1, further including a plurality of fluid conduits for mounting above such building floor and below the cable and conductor floors. 3. The system of claim 1 or claim 2, wherein the pedestal elements are truncated pyramids. 4. The system of claim 1 or claim 2 wherein the pedestal elements each include a plurality of adjacent, axially aligned, segments of circular cross section in a stepped configuration. 5. A supplemental flooring system made in accordance with claim 1, further comprising supply and return fluid conduits for positioning above the building floor for connection to a heat exchanger to provide heating and cooling for a space above the building floor. 14 6. The system of claim 5, further including a heat exchanger adapted to provide supplemental heating and cooling selectively and one at a time. 7. The system of claim 5 or claim 6, wherein the conduits are adapted to be connected to a source of water. 8. The system of claims 5 or claim 6, wherein the conduits are adapted to be connected to a source water in the form of a building cooling tower. 9. In combination with a building, a flooring system made in accordance with any of the claims 1, 2, 5 and 6 and installed on a floor of the building. 10. In combination with a building flooring systems in accordance with any of claims 1, 2, 5 and 6 installed on the floor of a building and further including a base floor interposed between the pedestal elements and the floor of the building. 11. In combination with a building flooring systems in accordance with any of claims 1, 2, 5 and 6 installed on the floor of a building and further including a base floor interposed between the pedestal elements and the floor of the building and wherein the base floor comprises a plurality of base panels and lock elements interconnecting the base panels. 12. In combination with a building flooring systems in accordance with any of claims 1, 2, 5 and 6 installed on the floor of a building and further including a base floor interposed between the pedestal elements and the floor of the building and wherein a selected one of the base floor and the pedestal elements includes leveling screws. 13. The system of any of claims 1, 2, 5 and 6, wherein certain of the pedestals are interconnected components of a pedestal strip having stringer connections each 15 interposed between and connected to a different pair of pedestals to maintain each such pedestal pair in predetermined spaced relationship. 14. A process of installing a flooring system on the floor of an existing building comprising: a) supporting a plurality of pedestals above the floor and arranging the pedestals in a geometric array; b) laying at least one first utility line above the building floor; c) engaging cable support panels with support surfaces defined by the pedestals to form a cable support floor above and in spaced relationship with the building floor and the first line; d) positioning at least one second utility line on the cable support floor; e) engaging communication conductor support panels with further surfaces defined by the pedestals to form a conductor support floor above and spaced from the cable support floor and said at least one second line; f) positioning at least one third utility line on the conductor support floor; g) supporting a plurality of working floor panels on the pedestals to form a working floor above and spaced from the cable support floor and said at least one third utility line; and, h) accessing at least one of the utility lines through an aperture in one of the floors. 15. The process of claim 14, further including the step of removing a knock-out to form the aperture. 16. The process of claim 14 or claim 15, further including the step of positioning a walking surface providing layer on the working floor. 17. The process of claim 14 or claim 15, further including the step of positioning a walking surface providing layer on the working floor and wherein said at least one first 16 utility line is a fluid conduit, further including the step of interconnecting a heat pump with a water supply via said fluid conduit. 18. The process of claim 14 or claim 15, further including the step of positioning a walking surface providing layer on the working floor and wherein said first utility line is a fluid conduit, further including the step of interconnecting a heat pump with a water supply via said fluid conduit and wherein water from the water supply is at a temperature from about 60° F to about 90° F when the system is in use. 19. The process of claim 14 or claim 15, further including the step of adjusting leveling screws operably connected to the pedestals to compensate for an uneven or unlevel existing building floor. 20. The process of claim 14 or claim 15, wherein there are a plurality of said first utility lines in the form of liquid conducting conduits and further including the steps of installing a heat pump in air circulation communication with the workspace; and, connecting the conduits to the heat pump and to a source of fluid. 21. The process of claim 14 or claim 15, wherein there are a plurality of said first utility lines in the form of liquid conducting conduits and further including the steps of installing a heat pump in air circulation communication with the workspace; and, connecting the conduits to the heat pump and to a source of water and wherein the source is a water cooling tower. 22. The process of claim 14 or claim 15, wherein there are a plurality of said first utility lines in the form of liquid conducting conduits and further including the steps of installing a heat pump in air circulation communication with the workspace; and. 17 connecting the conduits to the heat pump and to a source of water and wherein the source supplies water at from 60° F to about 90° F. 23. A support system for multiple floors of a sub-work surface utility line containment system comprising: a) a plurality of pedestal sets; b) each set including a plurality of pedestals interconnected by strips; c) a base floor for mounting on a floor of a building to be provided enhanced utility services; and, d) the pedestal sets being connected to the base floor and adapted to provide a geometric array of floor support pedestals. 24. The system of claim 23, wherein each of the pedestals includes a plurality of floor panel support surfaces for supporting utility support floor panels. 25. The system of claim 23 or claim 24, wherein each of pedestals includes top surfaces for support of work floor panels. 26. A base floor module for use in a retrofit flooring system comprising: a) base panels each having a plurality of generally parallel transversely disposed stiffening ribs; b) pedestal strips having a plurality of longitudinally disposed stiffening ribs and upstanding pedestals each adapted to support floor components; and, c) each of the strips being connected to at least one of the panels with their respective ribs orthoganally disposed whereby to provide a substantially rigid flooring module. 27. The base floor of claim 26, wherein the pedestals each have notches for receipt of parts of such further floor components. 18 28. The base floor of claim 26 or claim 27, wherein the module includes tie receiving structure for receiving ties to fix a plurality of such modules together in side by side relationship. 29. The base floor module of any of claim 26 or claim 27, wherein selected ones of the panels and strips include threaded apertures for receipt of leveling screws. 30. In combination with a plurality of the base floor modules of claim 26 or claim 27 an electrical conductor support floor, a signal conductor support floor, and a working surface support floor each supported by pedestal portions of the strips.

Inventors: OWEN DAVID D, OWEN, DAVID, D.
Applicants: OWEN DAVID D, OWEN, DAVID, D.
Application year: 1999
Main classification: E04B5
IPC codes: E04B1, E04B5, E04F15