The scope of Mitek’s services includes not only unrivaled expertise in terms of professional structural engineering service but also the extensive research and development into all aspects of timber and light gauge steel roof design and construction as well as a full range of manufacturing equipment…
The low mass per m2 (between 2-10kg) of this roofing system ensures both savings on the supporting structure as well as on transportation and erection costs whilst also being vermin proof and non-combustible. Large sections of the roof can simply be pre-assembled on the ground and hoisted into position on the walls – making this one of the most viable systems with a large range of applications up to a clear span of 40m.
Site-made roof trusses are either hand made timber roof trusses connected with bolts and nails OR site application nail plates at the node points. Pre-manufactured trusses are pre-manufactured timber roof
The Institute for Timber Construction (ITC-SA), South Africa’s professional body and regulator of the engineered timber structure industry, offers insight into the benefits of pre-fabricated roof trusses and how to prevent costly and potentially dangerous situations arising from having a non-compliant, site-manufactured roof installed by an erector that is not ITC-SA accredited.
The appropriate choice in the type of roof structure for low-cost and affordable housing is very much based on cost and also specific requirements, with both the nail-plated timber trusses and the light gauge
While there are a few misconceptions around timber’s fire performance, structural timber for roofing is both commonplace and performs well under fire conditions. As with every aspect of building, timber roof trusses must be manufactured and erected in line with the National Building Regulations and SANS 10400, which provide for fire safety.