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