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Educational Units - lecture room

Chassis

Chassis’ are constructed to run the full length and width of the building, two 200x75x20x3mm cold formed lip channel longitudinal main members run centrally the length of the building at 1640mm centres. 75x50x20x2.5mm cold formed lip channel cross members are welded at 600mm centres spanning the width of the building, spans can be reduced to 400mm centres in order to increase the floor loading where required and in all residential units. All cross members are supported by 40x40x3mm angle iron which span between the edge of the cross member and welded to the main member. All single and double wide units are fitted with screw jacks for easy levelling as standard, but tripod stands can be used where ground is uneven. All steelwork is protected with pre painted red oxide primer and sprayed with F147 black latex paint.

18mm exterior hardwood (WBP) ply floorboard is fixed onto the cross members with 12x45mm counter sunk wingtex screws. Vinyl flooring is bonded to the floor board using WD91 floor adhesive and all joints are plastic welded to form a water tight seal between vinyl strips.

Volumetric Buildings Construction Process
Volumetric Buildings Construction Process
Educational Units - lecture room

Shell Erection

10x41x15x0.5mm white chromadek ‘z’ section are fixed to the perimeter of the unit on top of the floorboard and vinyl with 75mm nails, joints between sections are sealed with a polyurethane 1 part sealant to prevent water gathering under the section.

Wall panels are placed on top of the ‘z’ section and fixed from under the floor board with 12x100mm screws; panels have a tongue and groove on either end and slide into one another to create a weather tight seal between panels. Internal partition are also fitted from below and have lip on either end, when partitions are brought together these lips are screwed together and a cover strip pinned over.

All window and door apertures are cut out using templates and fitted into place using the necessary fixings.

Educational Units - lecture room

Roofing

Roofing Panels are made complete with roof trusses already fixed in place. Wooden trusses are made for single and double wide units while steel is used for larger multi span units.

Panels are placed on top of walls and fixed into place using 12x100mm screws on all panels and partitions, electrics are then run on top of the ceiling panel as necessary.

38x38mm Battens are run across trusses at 300 – 500mm centres depending on unit width and type with 10.5 0.58mm corrugated ISQ300 (Z200) roofsheets are fixed on top. Rubber polyclosures are used under roofsheets and ridge capping to ensure weather proofing.

Volumetric Buildings Construction Process
Volumetric Buildings Construction Process
Educational Units - lecture room

Electrics

All units are wired for connecting to a 220v single phase supply with the exception of multi span type units and on request. All electrics are in accordance with SANS 10142-1 and are fitted with earth leakage protection within the distribution board

Electrics are run within the ceiling void and cored into the panels, PVC boxes are inserted into panels and front plates are screwed over.

Educational Units - lecture room

Plumbing

All plumbing works are fitted in line with the necessary building regulation codes and all fittings are SABS approved; we use copper and Speedfit type pipes and fittings. All units are fitted with a mains stop tap and waste outlets are either discharged through the wall or floor depending on the design.

Volumetric Buildings Construction Process
Volumetric Buildings Construction Process
Educational Units - lecture room

Finishing

All corners, edges and voids are neatly finished off with purpose made trims and flashings; this is all made from 0.58mm chromadek sheeting.

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