PROJECTS – ITC-SA AWARDS WINNER
THE FINER DETAILS
A key structural element and architectural feature of the project is the use of a large rammed earth wall that provides mass . The roof forms part of the steel portal frame so all the structural and bracing was done within the portal frame .
“ Due to the project ’ s proximity to the coast , we used IBR corrugated AZ200 sheets and insulated the roof with 135mm Isotherm between the purlins and double-sided radiant shield sisalation ( reflective foil insulation ). The ceilings were done with 12,5mm rhino board and fully skimmed .”
Apart from timber , conventional concrete foundations and brickwork for the bathroom and garage substructure was used . To ensure the structure has a minimal impact on the site , a steel portal frame structure on concrete pads was implemented . The house also includes a rib and block slab for the garage , timber framing for the rest of the building coupled with a variety of cladding including timber , corrugated metal and fibre cement .
FAST FACTS
• Waterless composting toilet
• Solar hot water
• Provision for rainwater tanks for water harvesting
• Highly insulated
• Double glazing throughout
• Provision for a green roof
• Rammed earth wall for thermal storage
HOUSE VERSTER IN REVIEW
• Location : Lakeside , Cape Town
• Site area : 580m ²
• House area : 89m ² over four levels
• Total budget : ± R2.5-million ( including land – R720 000 )
• Construction commencement : September 2015
• Materials : lightweight structural steel frame , timber walls , corrugated iron roof sheeting , rammed earth wall , concrete slabs for bathroom and garage floor
• Foundations , concrete garage and bathroom floor : three months ( October to December 2015 )
• Steel frame construction : one day ( 24 February 2016 )
• Timber frame construction and infill : two months ( early March to early May 2016 )
• Rammed earth construction : seven weeks ( May to July 2016 )
• Occupancy : November 2016
// OCTOBER / NOVEMBER 2018 29