Abstract:
A prefabricated core for a building with all services already built in. The core serves as: 1. the housing for all the home&#39;s mechanical, plumbing and electrical sources, and 2. a major structural support, providing three shear walls to the structure. This invention allows access to all of the services thus allowing for ease of maintenance and avoidance of collateral damage during renovations and remodeling.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation-in-part of U.S. patent application Ser. No. 12/748,751, filed Mar. 29, 2010, the entire specification, drawings and claims of which are incorporated in this application by reference. 
     
    
     BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
       [0002]    The present invention relates to the field of building construction and more particularly to the field of prefabricated building construction. 
       (2) Description of the Related Art 
       [0003]    Currently, houses are built in a standard sequence. The following is a typical sequence. 
         [0004]    Grading and site preparation 
         [0005]    Construction of foundation. Typically premixed concrete is poured or pumped into molds constructed on the site. 
         [0006]    Erection of framing on the foundation. Wood and steel are usually used for framing members. Openings are left in the framing for placement of doors and windows. 
         [0007]    Installation of windows and doors. 
         [0008]    Construction of roofing on top of the framing. 
         [0009]    Installation of exterior walls and/or siding. 
         [0010]    Installation of rough electrical wiring. 
         [0011]    Installation of rough plumbing. 
         [0012]    Installation of rough heating, ventilation and air conditioning (HVAC). 
         [0013]    Installation of alarm system wiring. 
         [0014]    Installation of phone system wiring. 
         [0015]    Installation of local area network LAN wiring. 
         [0016]    Installation of insulation in exterior walls and attic. 
         [0017]    Attachment of drywall to interior of framing. 
         [0018]    Installation of underlayment for floors. 
         [0019]    Installation of trim 
         [0020]    Painting. 
         [0021]    Installation of finish electrical, such as switches and lights. 
         [0022]    Installation of finish alarm system. 
         [0023]    Installation of LAN and phone system jacks and cover plates. 
         [0024]    Installation of bathroom and kitchen counters and cabinets 
         [0025]    Installation of finish plumbing, such as sinks, toilets and faucets. 
         [0026]    Installation of carpet and other flooring. 
         [0027]    Installation of HVAC units. 
         [0028]    Hookup to water main or well. 
         [0029]    Hookup to sewer or septic system 
         [0030]    Correction of problems. 
         [0031]    Homes are built to the current standards and government codes and with the latest available amenities. But such construction does not allow for adaptability and installation of new technology. For example, demolition and reconstruction are required if the homeowner wishes to upgrade the existing home&#39;s layout and fixtures, or they wish to upgrade the infrastructure (plumbing, electrical, communications, etc.). Since the home&#39;s infrastructure is so integrated into the superstructure, it is nearly impossible to simply rearrange spaces without also reconfiguring the main systems of the house as well. 
         [0032]    Another problem with typical home construction is that it takes a long time. Usually the foundation is poured quickly and the framing is built very fast but after that it takes a long time to for all the subcontractors to install the electrical, plumbing, etc. 
         [0033]    A number of inventors have attempted to solve one or other of these problems. 
         [0034]    (1) U.S. Pat. No. 4,447,996 
         [0035]    This patent is directed to prefabricated building structures for use in buildings with multiple units. The building will have modules to accept cubicles that are factory built containing an entire bathroom complete with lavatory, bathtub, water closet, and their associated plumbing, electrical wiring, outlets, in-line exhaust fan and the like. The module likewise could be a complete kitchen with appliance, wiring and the like. The prefabricated module that receives the cubicle can be placed to form the building by means of a crane and if the crane is of sufficient capacity the prefabricated cubicle could be positioned in the module and both installed at the same time. The cubicle will have one wall that is an exterior wall so that at a time to upgrade or repair a fire damaged unit a refurbished or new unit can be brought on site and the old one removed with the aid of rollers so that it can be rolled out to the crane. It would also be possible to change the type of cubicle from for instance kitchen to bathroom or bathroom to kitchen. 
         [0036]    (2) U.S. Pat. No. 6,301,838 
         [0037]    This patent is directed to building modules that can be prefabricated and installed in a building structure complete. The first building module is shown in  FIG. 1  is for one bathroom and the larger module shown in  FIG. 6  is for two rooms, electrical junction boxes and supply lines to light fan outlets and other fixtures conveniently extended within the module making it convenient and easy to connect the module to the electrical supply lines. Likewise, with the dryer vent, hot and cold water lines, gas conduit and the waste lines. The toilets are off the floor water closet. The rooms preferably toilets with lavatory or wash basins, bath and shower may otherwise be laundry rooms, kitchens, custodian rooms, rest rooms, or other kinds of rooms requiring one or more waste conduits to carry away waste water and likely require cold water and electricity and possibly hot water. Such rooms may further require gas dryer vents and other lines or conduits. 
         [0038]    (3) U.S. Pat. No. 5,528,866 
         [0039]    This patent is directed to a method and apparatus for constructing multi-rise stacked modules for human occupancy. The construction is in a pinwheel array with the method of construction providing for individual models that may be readily positioned and removed without affecting the structural integrity of the multi-rise structure. The modules are prefabricated, electrical and water services may be provided through hookups to a vertically extending electrical and water surface panels supported about a central open core. The dwelling modules could encompass habitat for residence, office, manufacture, or other human uses. 
         [0040]    (4) U.S. Pat. No. 7,540,120 
         [0041]    This patent is directed to a multi-level apartment building that includes a vertically extending stairway system with support walls that contain rectilinearly vertically extending utility service conduits used to receive standard utility services such as HVAC, plumbing, exhaust, etc. that extend in vertical straight line paths in the building thus the single stair support assembly vertically extending in each of the plurality of vertically aligned apartments function to consolidate plumbing, HVAC and other utilities into a single assembly having a straight vertical and unobstructed path. The apartment modules preferably include a plurality of pairs of apartments vertically stacked in alternating mirrored patterns and a plurality of such vertically stacked pairs of apartments horizontally aligned with one another. 
         [0042]    (5) U.S. Pre-Grant Publication 2009/0031642 
         [0043]    This reference is directed to interactive building modules that move between a collapsed configuration which is sized and shaped similarly to a standard shipping container that can be erected where it forms a building of greater space. The modules are connected together to form a single storied or multi-storied building. A series of standardized ceiling panels located within the common area create accessible services duct for placement of hydraulic, electrical, and data. Hot water is distributed to each module via a continuous hot water. A network managing system interactively manages resources. Scenarios for use of modules are virtual space, serviced office, hotel or serviced apartment or residential uses. The scenarios are not mutually exclusive. The design principle enables the same space to be used for different uses over time. The transference of a module from one use to another beside changing the furniture possibly the reprogramming or alternation of certain services to suit the requirements of the occupant and the new use of the module. The internal fit-out may consist of a range of standard plug-in modular components providing a variety of function and form. 
         [0044]    (6) U.S. Pat. No. 4,327,529 
         [0045]    This reference is directed to a prefabricated building comprising: a plurality of exterior and interior wall sections joined together in a selected configuration; a plurality of ceiling panels extending between the walls; a plurality of roof trusses overlying the ceiling panels; a roof supported by the trusses; a prefabricated utility core comprising: a plurality of vertical connected core walls extending vertically, one of the core walls providing an exterior wall of the building, an access door in this exterior wall, a main sewer line supported in the core and extending through the exterior core wall and having a plurality of lateral sewer lines extending through the core walls, a main water line extending through the exterior core wall and supported in the core and having a plurality of lateral water lines extending through the core walls, a water heater in the core connected to the main water line, a main hot water line connected to the heater and having a plurality of lateral hot water lines extending through the core walls, a breaker box in the core, a plurality of electrical conduits extending from the breaker box; and fixtures utilizing water and discharging sewage connected to selected the appropriate lateral lines. 
         [0046]    (7) U.S. Pat. No. 4,655,011 
         [0047]    This reference is directed to a prefabricated building system comprising a portable wall unit having a supporting frame and utility apparatus mounted on the supporting frame. The utility apparatus preferably is adjustably mounted on the supporting frame and may comprise plumbing, electrical, heating and/or cooling apparatus for the rooms adjacent to the portable wall unit in the building in which it is to be installed. Prefabricated wall partitions for the adjacent rooms can be assembled with the portable wall unit before shipment to the building site or at the building site. The portable wall unit is provided with means for aligning the wall unit with the adjacent wall partitions to facilitate the assembly thereof. 
         [0048]    (8) U.S. Pat. No. 5,127,201 
         [0049]    This reference is directed to a compact service core structure. The walls of the prefabricated compact service core structure are higher than the total height of the floor, wall and ceiling structure of an ordinary one-story residential building, but lower than the total height of a two-story building of any kind. The height of the walls is large enough to e.g. accommodate the serviced fixtures of complete main floor bathroom, kitchen, and possibly laundry and utility rooms, as well as lower parts of the same rooms of the second story of a two-story structure. On the other hand, the height is small enough to make the prefabricated compact service core structure possible to ship on standard low trailers anywhere in the world. The prefabricated compact service core structure allows for factory completion of all major plumbing, heating, ventilation, and electrical work for a two-story building, and easy on site hook-up to sewer, water, gas and electrical services from the bottom of the prefabricated compact service core structure ventilation and possibly electrical services may be extended above the top of the core through one or more extension service panels. As all portions of the floor of both stories and high plumbing wall are suspended, pre-manufacturing of the service core in the plan can easily match all custom designed floor heights or deviations from them usually originating from the supply of building lumber of irregular dimensions. 
         [0050]    (9) U.S. Pat. No. 5,890,341 
         [0051]    This reference is directed to a modular structure consisting of three modular units of approximately the same size, the center module being the primary module containing the mechanical components of the building, with plumbing, air conditioning and heating ducts, and electrical wiring in the slab floor structural foundation and door jambs. The primary module used to transport the entire structure is completed at the factory, requiring no further work at jobsite, with heating and cooling unit, hot water heater, cabinets and appliances, plumbing and light fixtures and accessories installed at the factory in permanent locations. The major exterior walls, slab floor foundation panels, and ceiling/roof panels for all three modules are similarly manufactured in one-piece in full width and the length of the building, eliminating joints, speeding assembly and strengthening the components. The major components of the side modules, consisting of the slab floor foundation panels, ceiling/roof panels and the exterior side walls, are all hinged so that they fold to the side and on top of the primary module. Accessories and wall panels and partitions not hinged are placed on top of the primary module for transportation. Two end walls are bolted to the center module during transportation to the site. At the pre-leveled permanent site, the primary module is lowered to the ground and the hinged slab floor foundation panels, which include hinged and folded exterior walls, along with the ceiling/roof panels, are unfolded and permanently fastened in place for that site, but can be refolded if later relocation is needed. The slab floor foundation panels for all three modules are placed directly on the ground or on a pre-built foundation, single or multi-level design. If a pitched roof was ordered, trusses and pre-sized roofing panels transported on top of the primary module are attached to the flat roof of the center module. Two or more of these triple modules can be joined side-to-side or end-to-end or on top of each other, for erection of multiple-unit buildings. 
         [0052]    However, none of these inventions allow a house to be built without waiting for installation of services and none of these inventions allow for ease of maintenance or avoidance of damage during remodeling and renovations. 
         [0053]    What is needed is a way of allowing a house to be built without waiting for installation of services and which, when built, would be easy to maintain and remodel. 
         [0054]    Development of a way to allow houses to be built without waiting for installation of services and which, when built, would be easy to maintain and remodel represents a great improvement in the field of construction and satisfies a long felt need of the contractor and homeowner. 
       SUMMARY OF THE INVENTION 
       [0055]    This invention is a core for a building, which has a cuboid framework. Preferably the framework is made of vertical and horizontal metal beams connected to each other. The core has an exterior wall section and three interior shear wall sections joined together to form a room at least two stories tall. The outsides of the interior wall sections are finished with an interior finish; the outside of the exterior wall section are finished with an exterior finish. Building subsystems are attached inside of the framework. Some of these subsystems are provided with connections for connecting with city services. The framework may be in two halves: a front half-framework and a rear half-framework. 
         [0056]    This invention further describes a method of constructing a core for a building, which includes the steps of: connecting vertical and horizontal beams to form a framework of cuboid shape having a top; providing multiple building subsystems; some of the subsystems provided with connections for connecting with city services; attaching a lifting mechanism to the top; and attaching the subsystems inside of the framework. 
         [0057]    The method may further include the steps of: pouring a foundation at a building site; constructing the core at a location remote from the building site: lifting the core with the lifting mechanism; placing the core on a vehicle; transporting the core to the building site on the vehicle; and placing the core on the 
         [0058]    An embodiment of the method of this invention includes the steps of: 
         [0059]    connecting a front set of vertical and horizontal beams to form a front half-framework of cuboid shape having a front top; connecting a rear set of vertical and horizontal beams to form a rear half-framework of cuboid shape having a rear top; attaching a front lifting mechanism to the front top; attaching a rear lifting mechanism to the rear top; attaching a set of building subsystems inside the front and rear half-frameworks, some of the subsystems provided with connections for connecting with city services. 
         [0060]    This method may further include the steps of: pouring a foundation at a building site; providing a level location remote from the building site; constructing the front and rear half cores adjacent each other on the level location; testing a least one building subsystem; lifting the half cores with their respective lifting mechanisms; placing the front half core on a first vehicle; placing the rear half core on a second vehicle; transporting the half cores to the building site; and placing the half cores on the foundation. 
         [0061]    A structural hold down which is used to attach the core to the foundation, is attached to the core at each corner. At least one interior platform is provided attached to the inside of at least one of the walls. There is a means for attaching a floor, external to the core, to each of the interior walls. There is an access door and a fresh air louver in the exterior wall. Water main and gas main connections are provided on the exterior wall and sewer connections are located inside the core. 
         [0062]    A water heater is installed in the core. Clothes washer, drier and dishwasher connections are located adjacent and outside of one of the interior wall sections. Preferably a toilet mechanism is located within at least one of the interior wall sections. This is a special mechanism with a bowl that will be installed later. The mechanism is installed so that the bowl will install from outside of the core. 
         [0063]    Faucets and mixing valves are attached to the outside of at least one of the interior wall sections. Plumbing and shut off valves interconnect the water main connection, gas main connection, sewer connection, water heater, clothes washer connection, drier connection, dishwasher connection, toilet mechanism, faucet and mixing valve as necessary and appropriate. The shut off valves are located adjacent the insides of the interior walls as close as possible to the appliances and the interior connections. 
         [0064]    An irrigation connection, connected to the water main, is located outside the exterior wall section. An electric mains connection is located on the exterior of the exterior wall section. A subpanel is located within the core and electrically connected to the electric mains connection. 
         [0065]    At least one forced air unit and an air conditioner condenser unit are installed within the core and connected to each other by appropriate piping. The condenser unit is located near the fresh air louver so that hot air produces by the condenser can readily escape through the louver. A return air supply duct stub and a air supply duct stub are connected to the forced air unit through one of the interior wall sections. 
         [0066]    Phone line and television signal connections are located outside the exterior wall section. The phone line connection is punched down to a punch block within the core. The television signal connection is connected to a signal splitter located inside the core. 
         [0067]    A modem is provided inside the core and electrically connected either the telephone punch block via a DSL line or the signal splitter. A security panel is provided inside the core and electrically connected to either telephone punch block or the modem. 
         [0068]    A fire suppression unit is located within the core and connected by a plumbing line to the water main connection. Sprinkler line stubs run from the fire suppression unit through the interior walls of the core. 
         [0069]    An in-line exhaust fan is provided within the core. Inlet ducts run through interior walls of the core to the in-line exhaust fan and an outlet duct runs from the fan to the fresh air louver. A control switch is attached to the outside of at least one of the interior wall sections and electrically connected to the in-line exhaust fan. 
         [0070]    A drier vent runs from behind the eventual location of the clothes drier through an interior wall through the core and through the exterior wall. 
         [0071]    A range hood is attached to the inside of one of the interior walls over the eventual location of the range. A range in-line exhaust fan is provided in the core. This is connected via ducting to the range hood. Exhaust ducting runs from the range in-line exhaust fan to the fresh air louver and control wiring runs from the switch in the range hood to the range in-line exhaust fan. 
         [0072]    A core in-line exhaust fan is located in the core adjacent the fresh air vent and a thermostatic control is located inside the core and electrically connected to the core in-line exhaust fan. 
         [0073]    This invention may include an internet protocol switching lighting control panel located within the core and electrically connected to the subpanel. 
         [0074]    This invention may include a water filtration unit in the plumbing between the water main connection, and the appliances and the interior connections. This invention may further include a reverse osmosis unit to supply drinking water. 
         [0075]    The modem may be a wired modem, wireless modem or a wired/wireless modem. 
         [0076]    The invention may also include a central vacuum system. This comprises a canister in the core, vacuum outlets in the interior walls and vacuum tubing interconnecting them. 
         [0077]    This invention may include a server within the core. 
         [0078]    This invention may also include an interior room within the core. This is formed by attaching an interior floor to the wall sections one story below the tops of the wall sections. This room is preferably a bathroom, which preferably includes another special toilet mechanism installed within at least one of the interior wall sections. This time the mechanism is installed so that the bowl for the toilet will install from inside of the core. The bathroom also includes faucets and mixing valves attached to the inside of at least one of the interior wall sections. Then plumbing and shut off valves are installed to interconnect the appliances in this interior bathroom with the water main connection, the sewer connection, and the water heater as necessary and appropriate; the shut off valves for these appliances being located under the interior floor as close as possible to the appliances. 
         [0079]    The present invention is a module that will allow a house to be built without waiting for installation of services. This is because the module is prefabricated with all services already built in. Further, this module allows access to all of the services thus allowing for ease of maintenance and avoidance of collateral damage during renovations and remodeling. It will be recognized by those familiar with the art to which this invention pertains that this invention could, alternatively, be built on site. 
         [0080]    The module of this invention separates the infrastructure from the superstructure in a way that allows the two buildings to be altered independent of each other. This is done by prefabricating an “Infrastructure Core,” which contains all the plumbing, mechanical and electrical/communications equipment into one central location that serves the entire house and is easily accessible. 
         [0081]    A central infrastructure core makes distribution much simpler. Plumbing only needs to go a short distance, making repairs and replacements easier, and electrical and mechanical systems also benefit from the location of the core and are able to radiate out into the home in an efficient manner. 
         [0082]    This core serves as: 1. the housing for all the home&#39;s mechanical, plumbing and electrical sources, and 2. a major structural support, providing three shear walls to the structure. 
         [0083]    This infrastructural core houses the utilities and electronics of the home in such a way that allows the remaining floor plan to be substantially more flexible than traditional floor plans. 
         [0084]    The house will preferably be wired with smart technology that will allow the lighting and electrical systems to be remotely observed and controlled. Individual web sites will allow home owners to monitor, control and maintain the health of their house from inside or remotely over the internet. 
         [0085]    The core has an inherent effect on the architecture of the house in the following ways. 1. The vertical orientation of the core, designed to maximize efficiency in floor space and materials, lends itself to a multi-story home. 2. Because of the consolidation of infrastructure in the core, there are fewer ducts and wires running through the home, resulting in fewer essential walls and fixed floor planes. 3. By using lower ceiling heights, three floors can be provided in a space that would normally accommodate only two floors in a traditional home. 
         [0086]    Balloon framing was chosen as the main method of construction for the wall panels for several reasons: 1. Components can be created off-site, saving time and money while increasing accuracy. 2. Vertically-oriented walls work seamlessly with window systems. 3. They make it easy to run electric and communication wiring up and down. 
         [0087]    It is an objective of this invention to provide a central core for a house that includes all the functionality of a modern infrastructural system. Modern infrastructure needs to be upgradeable, interconnected and monitorable. For example, a modern infrastructure should provide notification when FAU filters need to be changed, the water filtration needs filter change, a backup battery for the security system or tech rack needs to be changed, etc. 
         [0088]    It is an objective of this invention to provide a core that contributes to the structural stability of the house. The shell of the core provides lateral stability and floor/roof support for the rest of the house. It can be either a wood structure or steel structure. It can be made up of either a rigid frame construction with infill panels or it can be stud wall system. 
         [0089]    It is an objective of this invention to provide end use plumbing fixtures such as valves, faucets and toilets, already connected to the hot, cold and sewer distribution system. This minimizes plumbing time at the site and yields better and more consistent quality work since it is completed in a more controlled environment. 
         [0090]    It is an objective of this invention to provide 90% of the infrastructural distribution (i.e. pipes, ducts and wires) and 100% infrastructural source hardware (i.e. FAUs, condensers, low voltage controls for lighting or security, water filtration system, electrical panels, fire sprinkler riser, ventilation fans, etc.) within a prefabricated core. This minimizes the work, the time, and the need for many of the trades. 
         [0091]    It is an objective of this invention to provide a house in which repair, upgrade or maintenance can be easily and readily accomplished. This obviates the need to tear up concrete floors, finished ceilings or finished walls to access a defective solder joint that was leaking. It also obviates the need to cut into bathroom walls to replace worn out shower valves. In this invention all hardware is organized and installed so that it is easily accessible. Any aspect of the infrastructure can be updated, maintained or repaired without touching the finishes. One does not have to open the superstructure or structure to access any aspect of the infrastructure. 
         [0092]    It is an objective of this invention to provide the most efficient vertical and horizontal distribution of the infrastructural elements. This invention is crawl space plus attic plus the vertical and horizontal chases and raceways. This invention facilitates the interconnectivity of the modern infrastructural system. For example: the HVAC system needs electricity, hot &amp; cold water, sewer drain and low voltage control; the security system needs electricity, phone and network connection; the water heater needs electricity or gas, ventilation, connection to the water mains and connection to the plumbing fixtures; security cameras need electricity, back up batteries, phone system and access to the network. All of this access and more is provided conveniently and accessibly within the core of this invention. 
         [0093]    It is an objective of this invention to provide a complete, sophisticated and ideal infrastructural system to a house while consuming very little time in construction schedule. It is not only that minimizing the construction time saves money. But also the inherent efficiency of the system plus its factory production will make it cost much less than a site built house. Further, since the core of this invention is factory built it is less likely to be built wrongly. The core of this invention will be pretested and thus will be fully functioning at installation. It will be recognized by those familiar with the art to which this invention pertains, that this invention could, alternatively, be built on site. 
         [0094]    It is an objective of this invention to provide a core that is sized to be carried on smaller semi-trailers without wide load transport provisions. This invention is light and rigid which makes it easy to transport and install. There are no finishes such as tile or paint that would be vulnerable to damage in shipment. 
         [0095]    It is an objective of this invention to provide data on water and electricity consumption, and to operate switches, control temperature, control irrigation system, turn the security system on or off, view the security cameras, and move the shades up and down. 
         [0096]    It is an objective of this invention to provide consumer benefits because one company is behind the entire infrastructural system. Instead of dealing with multiple subcontractors, customers will deal with the manufacturer of this invention. 
         [0097]    It is an objective of this invention to provide remote monitoring through the internet of many aspects of the health of the infrastructure through sensors, cameras and internet. 
         [0098]    An appreciation of the other aims and objectives of the present invention and an understanding of it may be achieved by referring to the accompanying drawings and description of a preferred embodiment. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0099]      FIG. 1  is a three-dimensional view of the front half of framework. This is how the framework may be fabricated in the factory. 
           [0100]      FIG. 1A  is an elevational view of the E side of the framework shown in  FIG. 1 . 
           [0101]      FIG. 1B  is an elevational view of the S side of the framework shown in  FIG. 1 . 
           [0102]      FIG. 1C  is an elevational view of the N side of the framework shown in  FIG. 1 . 
           [0103]      FIG. 1D  is an elevational view of the W side of the framework shown in  FIG. 1 . 
           [0104]      FIG. 2  is a three-dimensional view of the rear half of the framework. This is how the framework may be fabricated in the factory. 
           [0105]      FIG. 2A  is an elevational view of the E side of the framework shown in  FIG. 2 . 
           [0106]      FIG. 2B  is an elevational view of the W side of the framework shown in  FIG. 2 . 
           [0107]      FIG. 2C  is an elevational view of the N side of the framework shown in  FIG. 2 . 
           [0108]      FIG. 2D  is an elevational view of the S side of the framework shown in  FIG. 2 . 
           [0109]      FIG. 3  is an elevational view of how front and rear frames are positioned for installation of the subsystems at the factory. 
           [0110]      FIG. 4  is a three-dimensional view of the front half of framework with the electrical subsystem installed. This is how the electrical system may be installed on the framework in the factory. 
           [0111]      FIG. 4A  is an elevational view of the S side of the framework shown in  FIG. 4 . 
           [0112]      FIG. 4B  is an elevational view of the N side of the framework shown in  FIG. 4 . 
           [0113]      FIG. 4C  is an elevational view of the E side of the framework shown in  FIG. 4 . 
           [0114]      FIG. 4D  is an elevational view of the W side of the framework shown in  FIG. 4 . 
           [0115]      FIG. 5  is a three-dimensional view of the front half of framework with the exhaust subsystem installed. This is how the exhaust subsystem may be installed on the framework in the factory. 
           [0116]      FIG. 5A  is an elevational view of the N side of the framework shown in  FIG. 5 . 
           [0117]      FIG. 5B  is an elevational view of the E side of the framework shown in  FIG. 5 . 
           [0118]      FIG. 5C  is an elevational view of the S side of the framework shown in  FIG. 5 . 
           [0119]      FIG. 5D  is an elevational view of the W side of the framework shown in  FIG. 5 . 
           [0120]      FIG. 6  is a three-dimensional view of the rear half of framework with the electrical subsystem installed. This is how the electrical system may be installed on the framework in the factory. 
           [0121]      FIG. 6A  is an elevational view of the S side of the framework shown in  FIG. 6 . 
           [0122]      FIG. 6B  is an elevational view of the E side of the framework shown in  FIG. 6 . 
           [0123]      FIG. 6C  is an elevational view of the N side of the framework shown in  FIG. 6 . 
           [0124]      FIG. 6D  is an elevational view of the W side of the framework shown in  FIG. 6 . 
           [0125]      FIG. 7  is a three-dimensional view of the rear half of framework with the exhaust subsystem installed. This is how the exhaust system may be installed on the framework in the factory. 
           [0126]      FIG. 7A  is an elevational view of the N side of the framework shown in  FIG. 7 . 
           [0127]      FIG. 7B  is an elevational view of the E side of the framework shown in  FIG. 7 . 
           [0128]      FIG. 7C  is an elevational view of the S side of the framework shown in  FIG. 7 . 
           [0129]      FIG. 7D  is an elevational view of the W side of the framework shown in  FIG. 7 . 
           [0130]      FIG. 8  is a three-dimensional view of the front half of framework with the gas subsystem installed. This is how the gas subsystem may be installed on the framework in the factory. 
           [0131]      FIG. 8A  is an elevational view of the N side of the framework shown in  FIG. 8 . 
           [0132]      FIG. 8B  is an elevational view of the E side of the framework shown in  FIG. 8 . 
           [0133]      FIG. 8C  is an elevational view of the S side of the framework shown in  FIG. 8 . 
           [0134]      FIG. 8D  is an elevational view of the W side of the framework shown in  FIG. 8 . 
           [0135]      FIG. 9  is a three-dimensional view of the rear half of framework with the gas subsystem installed. This is how the gas subsystem may be installed on the framework in the factory. 
           [0136]      FIG. 9A  is an elevational view of the N side of the framework shown in  FIG. 9 . 
           [0137]      FIG. 9B  is an elevational view of the E side of the framework shown in  FIG. 9 . 
           [0138]      FIG. 9C  is an elevational view of the S side of the framework shown in  FIG. 9 . 
           [0139]      FIG. 9D  is an elevational view of the W side of the framework shown in  FIG. 9 . 
           [0140]      FIG. 10  is a three-dimensional view of the front half of framework with the air supply subsystem installed. This is how the air supply subsystem may be installed on the framework in the factory. 
           [0141]      FIG. 10A  is an elevational view of the N side of the framework shown in  FIG. 10 . 
           [0142]      FIG. 10B  is an elevational view of the E side of the framework shown in  FIG. 10 . 
           [0143]      FIG. 10C  is an elevational view of the S side of the framework shown in  FIG. 10 . 
           [0144]      FIG. 10D  is an elevational view of the W side of the framework shown in  FIG. 10 . 
           [0145]      FIG. 11  is a three-dimensional view of the rear half of framework with the air supply subsystem installed. This is how the air supply subsystem may be installed on the framework in the factory. 
           [0146]      FIG. 11A  is an elevational view of the N side of the framework shown in  FIG. 11 . 
           [0147]      FIG. 11B  is an elevational view of the E side of the framework shown in  FIG. 11 . 
           [0148]      FIG. 11C  is an elevational view of the S side of the framework shown in  FIG. 11 . 
           [0149]      FIG. 11D  is an elevational view of the W side of the framework shown in  FIG. 11 . 
           [0150]      FIG. 12  is a three-dimensional view of the front half of framework with the fire suppression subsystem installed. This is how the fire suppression subsystem may be installed on the framework in the factory. 
           [0151]      FIG. 12A  is an elevational view of the N side of the framework shown in  FIG. 12 . 
           [0152]      FIG. 12B  is an elevational view of the E side of the framework shown in  FIG. 12 . 
           [0153]      FIG. 12C  is an elevational view of the S side of the framework shown in  FIG. 12 . 
           [0154]      FIG. 12D  is an elevational view of the W side of the framework shown in  FIG. 12 . 
           [0155]      FIG. 13  is a three-dimensional view of the front half of framework with the sewer subsystem installed. This is how the sewer subsystem may be installed on the framework in the factory. 
           [0156]      FIG. 13A  is an elevational view of the N side of the framework shown in  FIG. 13 . 
           [0157]      FIG. 13B  is an elevational view of the E side of the framework shown in  FIG. 13 . 
           [0158]      FIG. 13C  is an elevational view of the S side of the framework shown in  FIG. 13 . 
           [0159]      FIG. 13D  is an elevational view of the W side of the framework shown in  FIG. 13 . 
           [0160]      FIG. 14  is a three-dimensional view of the rear half of framework with the sewer subsystem installed. This is how the sewer subsystem may be installed on the framework in the factory. 
           [0161]      FIG. 14A  is an elevational view of the N side of the framework shown in  FIG. 14 . 
           [0162]      FIG. 14B  is an elevational view of the E side of the framework shown in  FIG. 14 . 
           [0163]      FIG. 14C  is an elevational view of the S side of the framework shown in  FIG. 14 . 
           [0164]      FIG. 14D  is an elevational view of the W side of the framework shown in  FIG. 14 . 
           [0165]      FIG. 15  is a three-dimensional view of the front half of framework with the water subsystem installed. This is how the fire sewer subsystem may be installed on the framework in the factory. 
           [0166]      FIG. 15A  is an elevational view of the N side of the framework shown in  FIG. 15 . 
           [0167]      FIG. 15B  is an elevational view of the E side of the framework shown in  FIG. 15 . 
           [0168]      FIG. 15C  is an elevational view of the S side of the framework shown in  FIG. 15 . 
           [0169]      FIG. 15D  is an elevational view of the W side of the framework shown in  FIG. 15 . 
           [0170]      FIG. 16  is a three-dimensional view of the rear half of framework with the water subsystem installed. This is how the water subsystem may be installed on the framework in the factory. 
           [0171]      FIG. 16A  is an elevational view of the N side of the framework shown in  FIG. 16 . 
           [0172]      FIG. 16B  is an elevational view of the E side of the framework shown in  FIG. 16 . 
           [0173]      FIG. 16C  is an elevational view of the S side of the framework shown in  FIG. 16 . 
           [0174]      FIG. 16D  is an elevational view of the W side of the framework shown in  FIG. 16 . 
           [0175]      FIG. 17  is a three-dimensional view of the front half of framework with the all subsystems installed. This is how all the subsystems may be installed on the framework in the factory. 
           [0176]      FIG. 17A  is an elevational view of the N side of the framework shown in  FIG. 17 . 
           [0177]      FIG. 17B  is an elevational view of the E side of the framework shown in  FIG. 17 . 
           [0178]      FIG. 17C  is an elevational view of the S side of the framework shown in  FIG. 17 . 
           [0179]      FIG. 17D  is an elevational view of the W side of the framework shown in  FIG. 17 . 
           [0180]      FIG. 18  is a three-dimensional view of the rear half of framework  26  with the all subsystems installed. This is how all the subsystems may be installed on the Half-framework  8  in the factory. 
           [0181]      FIG. 19  is an elevational view of the E side of the front and rear halves separated but with temporary connections of the subsystems on the two halves for testing. 
           [0182]      FIG. 20  is a three-dimensional view of front and rear sections joined together with all systems installed. The wall panels are omitted to provide a view of all installed systems. 
           [0183]      FIG. 21  is a three-dimensional view of the front and rear sections joined together and exterior panel applied. For clarity only the framework  8  is shown. 
           [0184]      FIG. 21A  is an elevational view from the N side of the assembly shown in  FIG. 21 . 
           [0185]      FIG. 22  is a three-dimensional view of the front and rear sections joined together and partially covered with interior and exterior panels or walls installed. For clarity only the framework  8  is shown. 
           [0186]      FIG. 23  is an elevational view of the front and rear halves separated and covered. This is how the front and rear halves may appear after completion in the factory 
           [0187]      FIG. 24  is a three-dimensional view of the front and rear halves covered and joined. This is how the full core appears after installation at the job site. 
           [0188]      FIG. 25  is a three-dimensional view of the bathroom and kitchen joined to the fully assembled core at the building site 
           [0189]      FIG. 26  is a three-dimensional cut away view showing aspects of wall construction. 
           [0190]      FIG. 27  is a three-dimensional cut away view showing further aspects of interior panel construction 
           [0191]      FIG. 28  is a cross-sectional view illustrating construction of an exterior panel 
           [0192]      FIG. 29  is a flow diagram describing steps of building a house employing a two-piece core 
           [0193]      FIG. 30  is a flow diagram describing steps of building a house employing a one-piece core. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0194]    While the present invention is described herein with reference to illustrative embodiments for particular applications, it should be understood that the invention is not limited thereto. Those having ordinary skill in the art and access to the teachings provided herein will recognize additional modifications, applications, and embodiments within the scope thereof and additional fields in which the present invention would be of significant utility. 
         [0195]    The figures from incorporated U.S. patent application Ser. No. 12/748,751 illustrate aspects of embodiments of the invention pertaining to the building infrastructure incorporated into the completed core. In the embodiment described in U.S. patent application Ser. No. 12/748,751, the prefabricated core is constructed as one unit, and is transported to the building site, as a four-sided room including an exterior panel and three interior panels joined together. The embodiment described in the instant application is an improvement of that described in U.S. patent application Ser. No. 12/748,751. 
         [0196]    In the embodiment described in the instant application, the prefabricated core  174  is constructed, and may be transported to the building site, as two half-cores  182   186 . At the building site, the two half-cores  182   186  are joined together to form a four sided room. FIGS. 1-45 of application Ser. No. 12/748,751 illustrate how the infrastructure components are incorporated into the completed core four-sided room.  FIGS. 1-25  of the instant application illustrate aspects of prefabrication of the core  174  in two half-cores  182   186 . 
         [0197]    Advantages to constructing the core  174  in two half-cores  182   186  include enabling two people to work in parallel on different components, e.g., electrical and plumbing. Additionally, the sizes of the two half-cores  182   186  are designed so that transport of the two half-cores  182   186  to the building site can be accomplished with available transportation without the need for wide load carriage. 
         [0198]    In the instant invention some components need to be connected across the midline  178  between the two half-cores  182   186 . In these cases, connections are made between a component in the front half-core  182  and the corresponding component in the rear half-core  186  for testing purposes. Then the components are disconnected for transport. Finally, the affected components are reconnected when the two half-cores  182   186  are joined on the building site. 
         [0199]      FIGS. 24 and 25  illustrate the fully assembled, prefabricated core  174  of this invention. While  FIGS. 24 and 25  illustrate a two story core  174 , those familiar with the field to which this invention pertains will realize that the core  174 , can be one or more stories tall. 
         [0200]    The completed core  174  is a room which has one exterior panel  172  and three interior panels  110 . In embodiments described in this application, the completed core  174  is constructed of two core half-cores  182   186 . Each half-core  182   186  of the core  174 , described in this application, comprises a three-sided room having three closed sides and one open side. At the job site, the two half-cores  182   186  are placed next to each other open side to open side, with the exterior wall  173  at a location which will become the outside of the house and joined together to form the completed core  174 . 
         [0201]    Each half-core  182   186  of the core  174  may be constructed on a half-framework  10   26  of vertical  12   v  and horizontal  12   h  metal beams. Brackets  22  may be attached at the ends  16  of the horizontal beams  12   h . All components are mounted on these half-frameworks  10   26 , and the interior panels  110  and exterior panel  172  may be attached to the brackets  22 . The interior panels  110  are made of a framework of wood or metal studs  210  covered with interior panel facings  226 . The interior panel facings  226  may be plywood or particle board or similar material. The exterior wall  173  is likewise made of a framework of wood or metal studs  210  covered with an exterior panel facing  236  and coated with an exterior finish  170 . The exterior panel facing  236  is, preferably, a polyvinyl chloride composition, or equivalent. 
         [0202]    The half-cores  182   186  of this invention are preferably made prefabricated. They are light and rigid which makes them easy to transport. They are sized to be transported on standard semi-trailers without wide load provisions. It will be understood that some or all of the following items will be installed during prefabrication of the half-cores  182 ,  186 : structural hold downs, platforms  14 , an access door  154 , an air intake louver  158 , a water main connection, a gas main connection, drain pipes  98  and sewer connections, a clothes washer connection  282 , a drier connection  306  stove connections  302 , a dishwasher connection  294 , toilet mechanisms, all faucets  198  and mixing valves, all plumbing and shut off valves, a tankless water heater  106 , an outdoor electric meter  30 , a subpanel  34 , at least one forced air unit, an air conditioner condenser  162 , a return air supply duct  86 , a air supply duct  82 , a phone line connection, a television line connection, a punch block, a signal splitter, a modem, a security panel, a fire suppression unit, sprinkler line and stubs, an in-line exhaust fan  54  with inlet and exhaust duct  50  and control switches, a drier vent  150   h , a range hood  194  with remote in-line exhaust fan  54 , ducting  50   82   86  and electrical wiring, and a core in-line exhaust fan  54  with thermostatic control. 
         [0203]    Note that in the Figures, directions (N, S, E and W) are shown for ease of reference to the various sides of the invention. These directions do not imply a direction in which this invention faces. 
         [0204]      FIG. 1  is a three-dimensional view of the front half  10  of the framework. This is how the framework  10  is fabricated in the factory. 
         [0205]    The half-framework  10  is comprised of beams  12   v    12   h . At least one platform  14  is included, which may comprise one or more gratings  18  slidably positioned on horizontal beams  12   h . Brackets  22  may be attached to the ends  16  of the horizontal beams  12   h , on the S, E and W sides. Interior panels  110  may be eventually attached to the brackets  22  on the S, E and W sides and an exterior panel  172  may be eventually attached to the N side. See  FIG. 24 . 
         [0206]      FIG. 2  is a three-dimensional view of the rear half  26  of the framework. This is how the half-framework  26  may be fabricated in the factory. The half-framework  26  is comprised of vertical  12   v  and horizontal  12   h  beams. At least one platform  14  is included, which may comprise one or more gratings  18  slidably positioned on horizontal beams  12   h . Brackets  22  may be attached to the ends  16  of the horizontal beams  12   h , on the S, E and W sides, which leaves protruding portions  12   p  of the horizontal beams  12   h  protruding past the vertical beams  12   v . Interior panels  110  may be eventually attached to the brackets  22  on the S, E and W sides. See  FIG. 24 . 
         [0207]      FIG. 3  is an elevational view from the E side, showing how front  10  and rear  26  frameworks may be positioned for installation of the subsystems at the factory. 
         [0208]      FIG. 4  is a three-dimensional view of the front half of the framework  10  with the electrical subsystem installed. This is how the electrical system may be installed on the framework  10  in the factory. Shown are an outdoor electric meter  30 , connected to a subpanel  34  by electric wiring (not shown) running through flexible metal conduit  38  Also shown is lifting hook  42  attached to a lifting beam  40 , which together comprise the lifting mechanism  44  used to lift the half-framework  10 . 
         [0209]      FIG. 5  is a three-dimensional view of the front half of the framework  10  with the exhaust subsystem installed. This is how the exhaust system may be installed on the half-framework  10  in the factory. Shown is exhaust duct  50 . 
         [0210]      FIG. 6  is a three-dimensional view of the rear half of the framework  26  with the electrical subsystem installed. This is how the electrical system may be installed on the half-framework  26  in the factory. Shown are another subpanel  34  and a junction box  46  connected together by flexible metal conduit  38 . Also shown is the lifting mechanism  44 . 
         [0211]      FIG. 7  is a three-dimensional view of the rear half of the framework  26  with the exhaust subsystem installed. This is how the exhaust system may be installed on the half-framework  26  in the factory. Shown is in-line exhaust fan  54  connected to the exhaust duct  50 . 
         [0212]      FIG. 8  is a three-dimensional view of the front half of the framework  10  with the gas subsystem installed. This is how the gas system may be installed on the half-framework  10  in the factory. Shown are the gas pipes  58 . 
         [0213]      FIG. 9  is a three-dimensional view of the rear half of the framework  26  with the gas subsystem installed. This is how the gas system may be installed on the half-framework  26  in the factory. Shown is gas pipe  58 . 
         [0214]      FIG. 10  is a three-dimensional view of the front half of the framework  10  with the air supply subsystem installed. This is how the air supply subsystem may be installed on the half-framework  10  in the factory. Shown are furnace  62 , heating coil  66 , and furnace vent  64  connected together by a return plenum  70 , a first supply plenum  74 , and an air supply duct  82 . Dotted line arrows show the direction of air flow. 
         [0215]      FIG. 11  is a three-dimensional view of the rear half of the framework  26  with the air supply subsystem installed. This is how the air supply subsystem may be installed on the half-framework  26  in the factory. Shown are second supply plenum  78 , third supply plenum  80 , air supply ducts  82 , and return air supply duct  86  connected together as illustrated. Dotted line arrows show the direction of air flow. 
         [0216]      FIG. 12  is a three-dimensional view of the front half of the framework  10  with the fire suppression subsystem installed. This is how the fire suppression subsystem may be installed on the half-framework  10  in the factory. Shown are the fire suppression drain  90 , fire sprinkler riser  94  and distribution pipe  96  connected together as illustrated. Dotted line arrows show the direction of water flow. 
         [0217]      FIG. 13  is a three-dimensional view of the front half of the framework  10  with the drain and sewer subsystem installed. This is how the drain and sewer subsystem may be installed on the half-framework  10  in the factory. Shown are the drain pipes  98 , the internal sewer  100 , and sewer vent pipe  99  connected together as illustrated. 
         [0218]      FIG. 14  is a three-dimensional view of the rear half of the framework  26  with the sewer subsystem installed. This is how the sewer subsystem may be installed on the half-framework  26  in the factory. Shown are the drain pipes  98 , the internal sewer  100 , and sewer vent pipe  99  connected together as illustrated. 
         [0219]      FIG. 15  is a three-dimensional view of the front half of the framework  10  with the water subsystem installed. This is how the water subsystem may be installed on the half-framework  10  in the factory. Shown are the cold water influx pipe  102 , tankless water heater  106 , hot water pipe  103 , air inlet  104 , and exhaust  108  for combustion gasses. Dotted line arrows show direction of air flow. 
         [0220]      FIG. 16  is a three-dimensional view of the rear half of the framework  26  with the water subsystem installed. This is how the water subsystem may be installed on the half-framework in the factory. Shown is the cold water influx pipe  102  and hot water pipe  103 . 
         [0221]      FIG. 17  is a three-dimensional view of the front half of the framework  10  with all the subsystems installed. This is how all the subsystems may be installed on the half-framework  10  in the factory. 
         [0222]      FIG. 18  is a three-dimensional view of the rear half of the framework  26  with all the subsystems installed. This is how all the subsystems may be installed on the half-framework  26  in the factory. 
         [0223]      FIG. 19  is an elevational view of the E side of the front  10  and rear  26  halves of the framework with all subsystems installed, with the front  10  and rear  26  half-frameworks separated but with temporary connection of the subsystems on the two half-cores  182   186 , for testing. Indicated are temporarily joined exhaust ducts  50 , fire suppression drain  90 , cold water influx pipe  102 , gas pipe  58 , and internal sewer  100 . This is how the subsystems may be installed for testing in the factory. As noted earlier, once the two half-cores  182   186  are tested, the temporary connections are cut. 
         [0224]      FIG. 20  is a three-dimensional view of the front  10  and rear  26  half-frameworks joined together with all systems installed. 
         [0225]      FIG. 21  is a three-dimensional view of the front  10  and rear  26  half-frameworks joined together and including the exterior wall  173 . For clarity only the half-frameworks  10   26  are shown. 
         [0226]      FIG. 21A  is an elevational view from the N (exterior wall) side of the assembly shown in  FIG. 21 . 
         [0227]      FIG. 22  is a three-dimensional view of the front  10  and rear  26  half-frameworks joined together and partially covered. For clarity the subsystems are not shown. 
         [0228]      FIG. 23  is an elevational view of the E side of the front  182  and rear  186  half-cores separated and covered. The coverings may comprise interior panels  110  mounted on the half-frameworks  10   26 . This is how the front  182  and rear  186  half-cores may appear after completion in the factory, and ready for transport to the building site. Also visible are sections of the flexible metal conduit  38 , a junction box  46 , an LT box  148 , a satellite cable conduit  142 , and the roof drain  138 . Also shown are how the second floor ledger  132  and ceiling ledger  136  are installed on the interior panels  110 . 
         [0229]      FIG. 24  is a three-dimensional view of the front  182  and rear  186  half-cores covered and joined. This is how the completed core  174  appears after installation at the building site. Shown are conduit for satellite cable  142 , for solar panel feed  146 , vent covers  150 , interior panel  110 , roof  114 , exterior wall  173 , ledger boards  132   136 , security camera  152 , air intake louver  158 , and drier vent  150   h . Several positions for the drier vent  150   h  are shown. These components may be installed during manufacture of the core, except for roof  114  which is generally installed at the building site. 
         [0230]      FIG. 25  is a three-dimensional view of the bathroom  118  and kitchen  122  joined to the fully assembled, prefabricated core  174 . Also illustrated are the roof  114 , ground floor  126 , ceiling of ground floor/floor of second floor  130 , ceiling of second floor  134 , access door  154 , air intake louver  158 , air conditioner condenser  162 , city water main  166 , internal sewer  100 , exterior wall  173 , interior panel  110 , faucet  198 , sink  202 , bathtub  204 , range hood  194 , stove  190 . All the illustrated components are installed after the core  174  is installed at the job site. 
         [0231]      FIG. 26  is a three-dimensional cut away view showing aspects of wall construction. Elements illustrated are the second floor ledger  132 , ceiling ledger  136 , studs  210 , the top plate  214 , the interior panel  110 , the exterior wall  173 , the exterior finish  170 , the sill  218 , and a steel beam  240 . 
         [0232]      FIG. 27  is a three-dimensional cut away view showing further aspects of interior panel  110  construction. Elements illustrated are the studs  210 , the top plate  214  and the interior facing  226 . Persons familiar with the art to which this invention pertains will recognize that this construction is typical for interior wall construction in the United States. 
         [0233]      FIG. 28  is a cross-sectional view illustrating construction of an exterior panel  172 . It comprises an exterior facing  236  fastened to studs  210 . Further to the exterior is an exterior finish  170  separated from the exterior facing  236  by an air gap  230 . 
         [0234]      FIG. 29  is a flow diagram illustrating the steps of building a house employing a two-piece core  174 . 
         [0235]    In step  510  and  520 , the two half-frameworks  10   26  are built. They are then placed next to each other and separated by a small distance on a level sill  218 , step  530 . Preferably steps  510  through  530  are done at a site remote from the site where the house will be built but could be done at the building site. 
         [0236]    In step  540 , the subsystems are installed in each half-framework  10   26 . Because components of some subsystems are installed in each half-framework  10   26  it may be necessary to make temporary connections across the gap, step  550 . 
         [0237]    In step  560 , the interior panels  110  are attached to the S, E and W sides of the half-frameworks  10   26  and the exterior wall  173  is attached to the N side of the front half-framework  26 . The interior panels  110  and wall  173  can be attached prior to or after the next step but this the preferred timing. 
         [0238]    Subsystems are tested, step  570 . After all subsystems pass testing, the temporary connections are disconnected, step  580 . 
         [0239]    In step  590  the two half-cores  182 ,  186  are lifted, tilted and laid on separate flatbed trucks. They are then trucked to the building site, step  600 , where they are lifted of the trucks and tilted upright. 
         [0240]    The foundation may be laid at the building site at any point in the prior steps but it must be laid prior to placing the half-cores  182   186  at the building site, step  605 . 
         [0241]    The half-cores  182 ,  186  are placed on the foundation abutting each other with the exterior wall  173  at a location on the foundation that will become the exterior of the house. 
         [0242]    In steps  630  and  640  the half-cores  182   186  are fastened to each other, the half-frameworks  10   26  are attached to the foundation, and components of subsystems in each half are connected to each other as necessary. 
         [0243]    After the core  174  is completed, the building is constructed around the core, wet components (see, for example  FIG. 25 ) are installed in the proper locations on the core, and utilities (electrical, plumbing, etc.) are run from the core to wherever they are needed in the house, step  650 . After this construction proceeds as follows. 
         [0244]    Erection of prefabricated wall panels  110   172  for the rest of the house on the foundation. Openings are left between panels  110   172  for placement of doors and windows. 
         [0245]    Construction of upper floor(s) and ceiling, including connecting floor and ceiling joists to the ledger boards  132   136  in known fashion. 
         [0246]    Installation of windows and doors. 
         [0247]    Construction of roofing  114  on the top  56  of the core  174  and prefabricated wall panels  110   172 . 
         [0248]      FIG. 29  is a flow diagram illustrating the steps of building a house employing a one-piece core  174 . 
         [0249]    In steps  710  and  720 , the core framework  8  is built and placed on a level sill  218 . Preferably these steps are done at a site remote from the site where the house will be build but could be done at the building site. 
         [0250]    The subsystems are installed in the framework at step  730 , and tested at step  740   
         [0251]    In step  750 , the interior panels  110  are attached to the S, E and W sides of the frameworks and the exterior wall  173  is attached to the N side. 
         [0252]    In step  760  the core  174  is lifted and laid on a flatbed truck. It is then trucked to the building site, step  770 , where it is lifted of the truck, step  780 , and placed on the foundation, step  790   
         [0253]    The foundation may be laid at the building site at any point in the prior steps but it must be laid prior to placing the core  174  at the building site, step  705 . 
         [0254]    The core  174  is placed on the foundation with the exterior wall  173  at a location on the foundation that will become the exterior of the house. 
         [0255]    In steps  800  the framework  8  of the completed core  174  is fastened to the foundation. 
         [0256]    After the core  174  is installed, the building is constructed around it. Wet components (see, for example  FIG. 25 ) are installed in the proper locations on the interior panels, and utilities (electrical, plumbing, etc.) are run from the core  174  to wherever they are needed in the house, step  810 . After this construction proceeds as follows. 
         [0257]    Erection of prefabricated wall panels  110   172  for the rest of the house on the foundation. Openings are left between panels  110   172  for placement of doors and windows. 
         [0258]    Construction of upper floor(s) and ceiling, including connecting floor and ceiling joists to the ledger boards  132   136  in known fashion. 
         [0259]    Installation of windows and doors. 
         [0260]    Construction of roofing  114  on the top  56  of the core  174  and prefabricated wall panels. 
         [0261]    One or Two-Piece Core 
         [0262]    One embodiment of this invention is a core  174  for a building, which has a rectangular prism or cuboid shape. For the purposes of this disclosure, “rectangular prism” will be used interchangeably with “cuboid”. The dictionary definition of “cuboid” is a “rectangular parallelepiped”, which is a box shape. For convenience the sides of the core  174  will be designated throughout this document as N, E, S and W. In no way does this imply the direction in which this invention faces. Preferably the core  174  is built on a framework  8  of vertical  12   v  and horizontal  12   h  beams connected to each other as illustrated in  FIGS. 1 and 2 . Portions  12   p  of the horizontal beams  12   h  protrude past the vertical beams  12   v.    
         [0263]    Building subsystems are attached inside of the framework  8 . Some of these subsystems are provided with connections for connecting with city services, such as water, gas, sewer, phone, cable and electricity. 
         [0264]    An interior panel  110  is attached to the E, S and W sides and an exterior wall  173  is attached to the N side. For the purposes of this application an interior panel  110  is one that is suitable for installation in the interior of a building and an exterior panel  172  is one that is suitable for installation on the exterior of a building. The major difference between these panels is that the exterior panel  172  is constructed to withstand the elements whereas an interior panel  110  does not have to be. Persons familiar with the art to which this invention pertains will know the difference in such panels. 
         [0265]    The framework  8  may be in two halves: a front half-framework  10  and a rear half-framework  26 . The front half-framework  10  includes a front E half-side, a front W half-side and the N side and the rear half-framework  26  includes a rear E half-side, a rear W half-side and the S side. The front S side of the front half-framework  10  and the rear N side of the rear half-framework  26  are open. 
         [0266]    Two-Piece Core 
         [0267]    A second embodiment of this invention is a core  174  for a building which has a cuboid front half-framework  10 , and a cuboid rear half-framework  26 . The front half-framework  10  has a front top  56   a , front E and W half-sides, and front N and S sides, with the front S side being left open. The rear half-framework  26  has a rear top  56   b , rear E and W half-sides, and rear N and S sides, with the rear N side being open. Note that the designations N, E, S, and W are for convenience, and do not imply the direction in which the invention faces. Preferably the half-frameworks  10   26  are made of vertical  12   v  and horizontal beams connected to each other as illustrated in  FIGS. 1 and 2 . Portions  12   p  of the horizontal beams  12   h  protrude past the vertical beams  12   v . Lifting mechanisms  44 , comprising a lifting beam  40  and lifting hook  42  are attached to the front top  56   a  and the rear top  56   b.    
         [0268]    Building subsystems are attached inside the front  10  and rear  26  half-frameworks. Some of these subsystems are provided with connections for connecting with city services, such as water, gas, sewer, phone, cable and electricity. 
         [0269]    An interior panel  110  is attached to the front E and W half-sides, the rear E and W half-sides, and the rear S side, and an exterior wall  173  is attached to the front N side. 
         [0270]    Method of Fabricating a One-Piece Core 
         [0271]    This invention further describes a method of constructing a core  174  for a building, which includes the steps of: 
         [0272]    connecting vertical  12   v  and horizontal  12   h  beams to form a framework  8  of cuboid shape having a top, and N, E, S and W sides with portions  12   p  of the horizontal beams  12   h  protruding past the vertical beams  12   v;    
         [0273]    attaching a lifting mechanism  44  to the top; 
         [0274]    attaching a number of building subsystems inside of the framework  8 ; 
         [0275]    some of the subsystems being provided with connections for connecting with city services; 
         [0276]    attaching an interior panel  110  to the E, S and W sides; 
         [0277]    and 
         [0278]    attaching an exterior wall  173  to the N side. 
         [0279]    The method may further include the steps of: 
         [0280]    pouring a foundation at a building site; 
         [0281]    constructing the core  174  at a location remote from the building site: 
         [0282]    lifting the core  174  with the lifting mechanism  44 ; 
         [0283]    placing the core  174  on a vehicle; 
         [0284]    transporting the core  174  to the building site on the vehicle; and 
         [0285]    placing the core  174  on the foundation so that the exterior wall  173  is at an exterior of the building. 
         [0286]    Method of Fabricating a Two-Piece Core 
         [0287]    An embodiment of this invention describes a method of constructing a core  174  for a building, which includes the steps of: 
         [0288]    connecting a set of vertical  12   v  and horizontal  12   h  beams to form a front half-framework  10  of cuboid shape, as shown on  FIG. 1  and with portions  12   p  of the horizontal beams  12   h  protruding past the vertical beams  12   v;    
         [0289]    connecting a set of vertical  12   v  and horizontal  12   h  beams to form a rear half-framework  26  of cuboid shape, with portions  12   p  of the horizontal beams  12   h  protruding past the vertical beams  12   v;    
         [0290]    attaching lifting mechanisms  44  to the tops  56   a    56   b  of the front  10  and rear  26  half-frameworks; 
         [0291]    attaching building subsystems inside the front  10  and rear  26  half-frameworks  10 ,  26  some of the subsystems being provided with connections for connecting with city services; components of some subsystems being installed in both half-frameworks  10   26 ; 
         [0292]    attaching interior panels  110  to the E and W sides of the front half-framework  10  and the E and W and S sides of the rear half-framework  26 ; and 
         [0293]    attaching an exterior wall  173  to the N side of the front half-framework  10 . 
         [0294]    This produces a front half-core  182  and a rear half-core  186 . 
         [0295]    This method may further include the steps of: 
         [0296]    pouring a foundation at a building site; 
         [0297]    providing a level location remote from the building site; 
         [0298]    constructing the front  182  and rear  186  half-cores adjacent each other on the level location; 
         [0299]    testing one or more building subsystems as appropriate; 
         [0300]    lifting the half-cores  182   186  with their respective lifting mechanisms  44 ; 
         [0301]    placing the front half-core  182  on a first vehicle; 
         [0302]    placing the half-core  186  on a second vehicle; 
         [0303]    transporting the half-cores  182 ,  186  to the building site; and 
         [0304]    placing the half-cores  182 ,  186  on the foundation with the S wall of the front half-core  182  abutting the N wall of the rear half-core  186  and the exterior panel  72  at the exterior of the building. 
         [0305]    Variations on the Above Listed Apparati and Methods 
         [0306]    Brackets  22  may be attached to the protruding portions  12   p.    
         [0307]    The interior panels  110  may be constructed by attaching studs  210  to interior facings  226 . Then the studs  210  of the interior panels  110  may be attached to the brackets  22  on the E and W sides of the front framework  10  and the E and W and S sides of the rear half-framework  26 . The exterior panel  172  may be constructed by attaching studs  210  to exterior facings  236 . Then the studs  210  of the exterior panel  172  may be attached to the brackets  22  of the N. The studs  210  and facings  236 ,  226  may be wooden. 
         [0308]    A second floor ledger  132  may be attached through the interior facings  226  and into the studs  210  on the S, E and W sides at a level to support a floor. A ceiling ledger  136  may be attached through the interior facings  226  and into the studs  210  on the S, E and W sides at a level to support a ceiling  130   134 . 
         [0309]    City services include water, gas, sewer, phone, cable and electricity. 
         [0310]    Preferably, the subsystems are: an electrical subsystem ( FIGS. 4,6 ); an exhaust subsystem ( FIGS. 5, 7 ); a gas subsystem ( FIGS. 8, 9 ); an air supply subsystem ( FIGS. 10, 11 ); a fire suppression subsystem; a phone subsystem; a lighting subsystem; a sewer subsystem ( FIGS. 13, 14 ); and a water subsystem ( FIGS. 15, 16 ). The subsystems may further include: a TV distribution subsystem; a Wi-Fi subsystem; and a water softening subsystem. 
         [0311]    The electrical subsystem components may include: an outdoor electric meter  30 , connected to subpanels  34 , junction boxes  46 , and LT boxes  148  by electric wiring (not shown) running through flexible metal conduit  38 . 
         [0312]    The exhaust subsystem may include an in-line exhaust fan  54  and interconnecting ducting  51 . 
         [0313]    The gas subsystem may include interconnecting gas pipes  58  with stubs NR at the ends for connecting the various gas powered appliances. 
         [0314]    The air supply subsystem may include: a furnace  62 ; a heating coil  66 ; a return plenum  70 ; three supply plenums  74   78   80 ; an air supply duct  82 ; and an return air supply duct  86  connected together as illustrated on  FIGS. 10 and 11 . 
         [0315]    The fire suppression subsystem may include: a fire sprinkler riser  94  connected to connect to a city water main; and a fire suppression drain  90  and distribution pipe  96  connected to the fire sprinkler riser  94 . Dotted line arrows show the direction of water flow. 
         [0316]    The phone subsystem may include: a punch block for connection to a city phone service; a wire connected to the punch block, and adapted to connect to a telephone. 
         [0317]    The lighting subsystem may include: an internet protocol lighting control panel electrically connected to a subpanel  34 . 
         [0318]    The sewer subsystem may include: drain pipes  98 , sewer lines  100 , and sewer vent pipes  99  connected together as illustrated. The drain lines are adapted for attachment to a sink, toilet, shower and tub  204 . The drain pipes  98  are connected to the internal sewer  100 . 
         [0319]    The water subsystem may include: incoming cold water influx pipe  102 , tankless water heater  106 , hot water pipe  103 , air inlet  104 , and exhaust  108  for combustion gasses. Dotted line arrows show direction of air flow. 
         [0320]    The incoming cold water influx pipe  102 , adapted at its front end to connect to a city water main  166 , is split into a number of branches and is adapted the ends of the branches to connect to a cold water appliance such as faucets, toilets, etc. A tankless water heater  106  is also connected to the cold water influx pipe  102  at its inlet and a hot water pipe  103  at its outlet. The hot water pipe  103  is also split into a number of branches and is adapted the ends of the branches to connect to hot water appliance such as faucets, shower heads, etc. 
         [0321]    The TV distribution subsystem may include a coax to a TV antenna, satellite dish or a city cable TV service. 
         [0322]    The Wi-Fi subsystem may include a wireless modem connected to a city internet service. 
         [0323]    The water softening subsystem may include a water softener connected in the water influx pipe  102 . 
         [0324]    Procedures after Fabrication of Core 
         [0325]    The foundation, with sewer connections incorporated in it is poured on the job site. Then the core  174  is delivered and placed in its proper place on the foundation and secured with the structural hold downs. Construction then proceeds as follows. 
         [0326]    Erection of prefabricated wall panels  110   172  for the rest of the house on the foundation. Openings are left in the framing for placement of doors and windows. 
         [0327]    Construction of upper floor(s) and ceiling, including connecting floor and ceiling joists to the ledger boards  132   136  in known fashion. 
         [0328]    Installation of windows and doors. 
         [0329]    Construction of roofing  114  on the top  56  of the framing. 
         [0330]    Running electrical wiring from subpanel  34 . 
         [0331]    Running alarm system wiring from alarm panel. 
         [0332]    Running of phone system wiring from punch block. 
         [0333]    Installation of local area network LAN wiring from modem. 
         [0334]    Installation of insulation in exterior walls  173  and attic. 
         [0335]    Attachment of drywall to interior panels  114 . 
         [0336]    Installation of underlayment for floors  126   130 . 
         [0337]    Installation of trim 
         [0338]    Painting. 
         [0339]    Installation of finish electrical, such as switches and lights. 
         [0340]    Installation of finish alarm system. 
         [0341]    Installation of LAN and phone system jacks and cover plates. 
         [0342]    Installation of all sinks  202 . 
         [0343]    Installation of bathroom and kitchen counters and cabinets 
         [0344]    Installation of faucet décor and toilet bowls. 
         [0345]    Installation of carpet and other flooring. 
         [0346]    Hookup to water main or well. 
         [0347]    Hookup to sewer or septic system 
         [0348]    Correction of problems. 
         [0349]    It will be understood from the above descriptions that in a house constructed with the core of this invention, the bathrooms, kitchen and laundry room are located next to the outside of an interior panel  172 . 
         [0350]    The following reference numerals are used on  FIG. 1  through . . . :
         8  Complete framework     10  Front half-framework     12   h  Horizontal beam     12   v  Vertical beam     12   p  Protruding portion of horizontal beam.     14  Platform     16  End of horizontal beam     18  Grating     22  Bracket     26  Rear half framework     30  Outdoor electric meter     34  Subpanel     38  Flexible metal conduit     40  Lifting beam     42  Lifting hook     44  lifting mechanism     46  Junction box     50  Exhaust duct     51  Interconnecting ducting     52  Bathroom, laundry and kitchen hood vents     54  In-line exhaust fan     56  Top of core     56   a  Top of front half of core     56   b  Top of rear half of core     58  Gas pipe     62  Furnace     64  Furnace vent     66  Heating coil     70  Return plenum     74  First supply plenum     78  Second supply plenum     80  Third supply plenum     82  Air supply duct     86  Return air supply duct     90  Fire suppression drain     94  Fire sprinkler riser     96  Distribution pipe     98  Drain pipe     99  Sewer vent pipe     100  Internal sewer     101  Drain connection for connection to e.g. toilet or sink drain.     102  Cold water influx pipe     103  Hot water pipe     104  Air inlet     106  Tankless water heater     108  Combustion gas exhaust     110  Interior panel     114  Roof     118  Bathroom     122  Kitchen     126  Ground floor     130  Ceiling of ground floor/floor of second floor     132  Second floor ledger board     134  Ceiling of second floor     136  Ceiling ledger board     138  Roof drain     142  Conduit for satellite cable     146  Conduit for solar panel feed     148  LT (find better definition) box     150  Vent covers     150   a  Bathroom     150   b  Sewer     150   d  Furnace     150   e  Kitchen hood     150   g  Water heater     150   h  Drier vent (several potential positions shown)     152  Security camera     154  Core access door     156  Roof drain     158  Air intake louver     162  Air conditioner condenser     166  City water main     170  Exterior finish     172  Exterior panel     173  Exterior wall     174  Fully assembled, prefabricated core.     178  Midline of fully assembled, prefabricated core     182  Front half of fully assembled, prefabricated core, or front half-core.     186  Rear half of fully assembled, prefabricated core, or rear half-core.     190  Stove     194  Range hood     198  Faucet     202  Sink     204  Bathtub     210  Stud     214  Top plate     218  Sill     222  Level surface     226  Interior panel facing     230  Air gap     236  Exterior panel facing     240  Steel beam     244  Mirror backing     248  Vanity backing     252  Roof drain outlet     256  Motion sensor light connection     260  Roof drain overflow     266  Upper cabinet backing     270  Lower cabinet backing     274  Vanity faucet connection     278  Toilet flush plate     282  Water box (hot and cold water connection plus drain) for washing machine.     286  Hot and cold water connections for kitchen faucet     290  Cold water connection for refrigerator     294  Hot water connection for dishwasher     298  Access for remote high and low voltage electrical connections     302  Gas supply for stove     306  Gas supply for dryer     310  Toilet drain     314  Toilet water supply     318  Bathtub hot and cold water connection     322  Shower/bathtub control valve     326  Shower head connection.       
 
         [0464]    A preferred material for the half-framework is Unistrut™ by Alkore International. 
         [0465]    The preferred water heater is TAKAGI Condensing High Efficiency Gas Tankless Water Heater T-H3 S-DV-N (Indoor) 
         [0466]    The preferred water pipes are UPONOR ¾″ &amp; ½″ AquaPEX Tubing 
         [0467]    The preferred coil is ASPEN CASED MULTI-POSITION COIL CE60F34210L004 
         [0468]    The preferred heater is GOODMAN SINGLE-STAGE, MULTI-SPEED GAS FURNACE GMSS961005CN 
         [0469]    The preferred fans are S&amp;P In-line exhaust fan, TD-Mixedvent TD-100 
         [0470]    The preferred electrical panels are from SIEMENS 
         [0471]    The preferred junction and pull boxes are WIRE GUARD SYSTEM Junction &amp; Pull Box 667K Type1 
         [0472]    The preferred electrical boxes are UMI Electrical Box 
         [0473]    The preferred electrical meter is SIEMENS Outdoor Electrical Meter 
         [0474]    The preferred electrical conduit is flexible metal conduit 
         [0475]    The preferred . . . is RESI-RISER Compact Pre-Assembled Test &amp; Drain Assembly 
         [0476]    The preferred sewer and drain pipes are MUELLER INDUSTRIES ABS DWV Pipes 
         [0477]    The preferred sewer and drain fittings are MUELLER INDUSTRIES ABS DWV Fittings 
         [0478]    Thus, the present invention has been described herein with reference to a particular embodiment for a particular application. Those having ordinary skill in the art and access to the present teachings will recognize additional modifications, applications and embodiments within the scope thereof 
         [0479]    It is therefore intended by the appended claims to cover any and all such applications, modifications and embodiments within the scope of the present invention.