by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
Housing : March 2009
Product Review MiTek’s PosiTrusses are a favourite on site for their versatility and cost effectiveness. Lieske Tigchelaar finds out more. strutting its stuff C ost effectiveness, installation time, and strength and reliability are important features when it comes to construction materials. MiTek says it has created a solution in flooring and roofing that not only does all of this, but actually increases design opportunities as well. PosiTrusses from MiTek are a convenient flooring and roofing system that offer a range of advantages for builders, architects and engineers, and open up a variety of design possibilities not always easily achieved with some other products. PosiTrusses’ lightweight construction means they are easier to handle and quick and easy to install, and the openweb design means greater accessibility options for services such as plumbing, electrical, and heating and cooling systems without the need to modify the trusses on site. According to MiTek technical services manager, Robert Tan, PosiTrusses are the ideal solution for today’s building needs because of their versatility and affordability. ‘The labour time alone that can be saved using PosiTrusses will mean substantial savings to construction budgets,’ he says. ‘The PosiTruss is basically a made- to-order parallel chord truss that incorporates the versatility of timber and the strength of steel. They provide an economical and high quality floor and roof structure which is easily assembled and provides excellent access for plumbing, electrical services and air conditioning ducts. They may also be used for long span rafters or purlins to carry tile or steel deck roofing.’ Additionally, PosiTrusses will stand upright and do not require temporary bracing. PosiTrusses can be fully customised and specifically engineered for any project ‘No herringbone bracing or solid blocking is needed,’ Robert says. ‘PosiTrusses can be simply placed into position. A strongback nailed to the timber vertical is then all that is required, and unlike other beams or joists, PosiTrusses won’t buckle sideways. Their wide surface enables flooring/ceilings to be fixed more easily, and joining panels can be completed without needing to doubleup or pack joists.’ PosiTrusses are manufactured in nominal sizes of 200, 250, 300, and 62 HOUSING MARCH 2009