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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 structurally 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.

Volumetric Buildings Technical Specifications
Volumetric Buildings Technical Specifications
Educational Units - lecture room

Floor Construction

18mm exterior hardwood (WBP) ply floorboard is fixed onto the cross members with 12x45mm counter sunk galvanised wingtex screws. The floorboard is constructed with 7 ply layers bonded under heat and hydraulic pressure using exterior grade adhesive as stipulated under SANS 929:2008.

2mm heavy duty industrial vinyl or smooth 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.

Carpet tiles and domestic novilon are used in our residential units and are optional in office units.

Educational Units - lecture room

External & Internal Walls

Panels are manufactured by injecting a two part polyurethane substrate between two cladding layers in a heated moulding system. Claddings are typically frost white 0.5mm ISQ230 (Z100) pre-painted hot-dip galvanised steel Chromadek, 3.6mm oak or plain ply, fibre cement or a combination thereof.

Where framing is utilised, all timber is treated in accordance with SANS 1288 using Tanalath CCA oxide (3302) having a composition as follows: Copper (CU) 33.85%, chrome (CR) 41.45% and arsenic (As) 24.70%. The timber is treated using a vacuum pressure system of impregnation to a minimum dry salt retention of 6kg/mᶟ.

Thermal properties are 25-30% superior than polystyrene and at least 70% better than any typical mineral wool material. Long term thermal resistance is achieved between -30°C and 90°C, temperatures of up to 250°C can be withstood for a short period without damage.

Closed cell foam is packed at density 38-40kg/m3 and has fire retardant properties compliant with SANS 10177-2. Due to the closed cell nature of the polyurethane moisture is not absorbed and is resistant to insects and rodents.

Wall system is tongue and groove in concept providing a weather tight seal between panels with a lateral coverage of 1179mm per panel.

Standard panel thickness is 42mm, 50mm, 75mm or 100mm and is available in lengths of up to 12m can have a rigidised or smooth finish.

Estimated R Value

42mm 50mm 75mm 100mm
R Value (SI) 1.92 2.29 3.43 4.58
R Value (Imp) 10.9 13.0 19.5 26.0
Volumetric Buildings Technical Specifications
Volumetric Buildings Technical Specifications
Educational Units - lecture room

Windows

Windows are manufactured from aluminium extrusions and are naturally anodised as standard although options for bronze or powder coated finishes are available if required. Windows can either be manufactured as sliding or top hung casement type and are fitted with 4mm clear safety glass with obscure being fitted in ablution areas. All windows are manufactured in accordance with SANS 10400 Part N. Standard window size widths are 1500mm, 1200mm, 900mm, 600mm, 500mm with heights of 1200mm, 900mm, 500mm, although bespoke sized windows can be manufactured.

Our log cabin range is fitted with strong wood type meranti windows where steel burglar guards are encapsulated within the timber façade.

Additional Options

Burglar guards can be fitted, where light security is required aluminium bar type guards can be fitted within the frame. For heavier security options either fixed aluminium alu-guards or steel powder coated guards are fastened through the wall to provide secure fixing.

Flyscreens can be fitted to any size window, these are framed in aluminium.

Where superior insulation is required windows can be fitted with single glazed low emissivity glass or for more extreme conditions double glazing can be fitted to casement type windows.

Educational Units - lecture room

Doors

Exterior doors are manufactured from chromadek or fully glazed aluminium. Single doors have a standard width of 810mm, but are also available in 610mm, 710mm or 910mm, 1340mm one and half door set and 1640mm double door set are also available as standard. All doors have a height of 2030mm.

Our log cabin range is fitted with strong wood type meranti doors where steel burglar guards are encapsulated within the timber façade.

Interior doors in office type units are hollow core brown cater foil doors, and within ablutions or medical type units are chromadek.

Chromadek

Manufactured as a composite door, typically frost white 0.5mm ISQ230 (Z100) pre- painted hot-dip galvanised steel Chromadek smooth sheets are fixed either side of a timber frame and injected with polyurethane insulation. Timber is all SA pine treated in accordance with SANS 1228:1994. Each door leave is fitted with three aluminium naturally anodised sinkless door hinges which is fixed into an aluminium naturally anodised door frame. Union 3 lever locksets with zinc back plates are fitted as standard. Vision panels can be fitted if required.

Glazed Aluminium

Doors and frames are manufactured with naturally anodised or powder coated aluminium and are fitted with 4mm toughened clear glass or aluminium kick plate. Side and top window lights can be incorporated into the frame for extra natural light if required. Doors are fitted with euro profile cylinder locksets.

Volumetric Buildings Technical Specifications
Volumetric Buildings Technical Specifications
Educational Units - lecture room

Roofing

Roofing Panels are made complete with roof trusses already fixed in place. Timber trusses are made for single and double wide units while steel is used for larger multi span units. All timber used is treated in accordance SANS 1288, lattice beams utilised in double wide units are manufactured from 40x40x3mm angle iron.

Our standard ceiling finish is white wallpaper, but a chromadek finish can also manufactured if required.

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 0.58mm gemsbok sand corrugated ISQ300 (Z200) roofsheets are fixed on top. Rubber polyclosures are used under roofsheets and ridge capping to ensure weather proofing.

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.

Volumetric Buildings Technical Specifications
Volumetric Buildings Technical Specifications
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 22mm mains stop tap and waste outlets are either discharged through the wall or floor depending on the design.

Standard ablution areas are generally fitted with the following:

  • Porcelain Basins With Pedestals
  • Porcelain Urinals
  • Porcelain Toilet Pans With Plastic Cisterns
  • 870x870mm Chromadek Showers With Shower Curtains
  • 1700mm White Plexicor Baths
  • Floor Drains
  • Extractor Fans On Independent Isolators
  • All Geysers Fitted Are High Pressure
  • Tile Splash Backs

Additional options available on request are aluminium shower doors, fully tiled shower areas, stainless steel sanitary ware in lieu of porcelain, and gas or solar water heating options.

Educational Units - lecture room

Finishing

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

Volumetric Buildings Technical Specifications
Volumetric Buildings Technical Specifications
Educational Units - lecture room

Building Additional Options

  • Wall To Wall Carpeting
  • Porcelain Floor & Wall Tiles
  • Window Burglar Guards
  • Security Gates
  • Window & Door Flyscreens
  • Curtains & Tracks
  • Blinds & Tracks
  • Window Tinting
  • PVC Rainwater Goods
  • Seamless Aluminium Guttering
  • Hipped Roofs
  • Verandas
  • Door Verandas
  • Window Wall & Split Level Air Conditioners
  • Ceiling Fans
  • Gas or Solar Water Heating Solutions
  • Under Floor Heating
  • Rubber Lined Floors

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