Thermo tech mark ii limited

Abstract

A building panel, comprising a concrete portion with an inner and outer face, and an enclosing boundary portion around the inner face perimeter, with a rigid planar plastic sheet against the inner face, and spacing studs against the outer face, the studs including fasteners protruding through to embed into the concrete. Also, a method of forming the building panel comprising the steps of forming an enclosed-perimeter outer framework, positioning a plurality of spacing studs which include fasteners extending upwards within the outer framework, placing a planar plastic panel within the frame over the top of the studs with the fastening members protruding through, then pouring concrete into the frame to cover the panel, and fill the framework to the required depth, then removing the outer frame from the cured concrete.

1 - 99 . (canceled) 
   
   
       100 . A building panel, comprising:
 a concrete portion, having an inner face, an outer face, and an enclosing boundary portion around the perimeter of said inner face,   a rigid planar plastic sheet having an outer face, and an opposed inner face fitting against and sized with said concrete portion inner face,   a plurality of spacing studs located against said outer face of said plastic panel, each of said spacing studs including at least one fastening member that protrudes through said plastic panel and into said concrete portion, such that said fastening members are embedded in said concrete portion.   
   
   
       101 . The building panel as claimed in  claim 100  wherein said boundary portion has four sides, the first, second and third of said sides having a substantially flat inner face, said first and second sides parallel, said building panel also including parallel spacer blocks located against said flat inner faces of said first and second sides, said spacer blocks the same width as said faces. 
   
   
       102 . The building panel as claimed in  claim 101  wherein said spacing studs are steel U-channels, aligned so that one side of said channel abuts said plastic panel, the outer ones of said spacing studs arranged to form a closed perimeter inner framework around the edges of said outer face of said planar plastic panel, the bases of the channels that form said closed perimeter aligned to face outwards from said inner framework towards said enclosing boundary portion. 
   
   
       103 . The building panel as claimed in  claim 102  wherein the inner faces of said spacer blocks and the inner portion of said spacing studs lie in substantially the same plane. 
   
   
       104 . The building panel as claimed in  claim 103  wherein the overall thickness of said building panel is between 180 and 220 mm, and said plastic sheet has a thickness of between 30 mm and 50 mm. 
   
   
       105 . The building panel as claimed in  claim 104  wherein said spacing members have a width across the base of said u-channel of substantially 90 mm. 
   
   
       106 . The building panel as claimed in  claim 105  wherein at least the outer ones of said U-beams are filled with polystyrene. 
   
   
       107 . The building panel as claimed in  claim 106  wherein said building panel also includes at least one embedded wall panel fastener, said panel fastener comprising a hollow fastening tube and a main body, said main body embedded in said concrete panel, said fastening tube passing through one side of said boundary portion, said at least one fastening tube sized and aligned to pass through that side of said boundary portion adjacent to said perpendicular spacer block, said main body an elongate member bent to form a panel portion and a connection portion, said panel portion embedded between said inner face and said outer face of said concrete portion, said connection portion passing between and connecting said panel portion and said fastening tube. 
   
   
       108 . The building panel as claimed in  claim 107  wherein said building panel includes steel mesh and rebar elements embedded within said concrete portion. 
   
   
       109 . The building panel as claimed in  108  wherein said wall panel also includes a portal, passing through said concrete portion and said planar plastic sheet, said portal comprising:
 an open-ended box frame, the inner edges of said box frame planar with inner side,   a portal frame element, the inner part of said frame element adjacent the outer edges of said box frame, the outer part of said frame element embedded in said concrete portion.   
   
   
       110 . The building panel as claimed in  claim 109  wherein the intersection of said box frame and said portal frame element is surrounded by polystyrene blocks. 
   
   
       111 . The building panel as claimed in  claim 110  wherein said polystyrene blocks and said portal frame element are surrounded by a PVC barrier sheet arranged such that said concrete and said frame are not in direct contact. 
   
   
       112 . The building panel as claimed in  claim 111  wherein said building panel also has a timber top plate, one face of said timber top plate located against the inner face of the fourth side of said boundary portion, said timber top plate sized to cover said fourth side. 
   
   
       113 . The building panel as claimed in  claim 112  wherein said parallel spacer blocks run the full length of said building panel, and said timber top plate is the same length as the closest, parallel, edge of said plastic sheet. 
   
   
       114 . The building panel as claimed in  claim 113  wherein said building panel includes a service channel located against, and running the length of, said one face of said timber top plate. 
   
   
       115 . The building panel as claimed in  claim 114  wherein said service channel is formed from a u-channel section attached to said timber top plate, with the open face of said channel facing said top plate, and said service channel is a USG ceiling batten with a depth of substantially 23 mm and a base width of substantially 37 mm. 
   
   
       116 . The building panel as claimed in  claim 115  wherein said building panel includes a plurality of bolts, protruding from said inner faces of said boundary portion and embedded in said spacer blocks, and said bolts are 130 mm M12 bolts embedded in said spacer blocks to a depth substantially 5 mm less than the depth of said spacer blocks. 
   
   
       117 . The building panel as claimed in  claim 116  wherein said building panel also includes a plurality of screws, passing through said timber top plate and said service channel, and into said concrete.