Pinesquared timber is used for platform frame construction with frame square edgeswhich support the load along with the inner sheathing providing rigidity andthe outer sheathing closing of the frame. This is where the insulation isrooted, preserving the sandwich layers together. Another layer on the outsidewhich is on battens creates a cavity for the circulation of air preserving thesandwich layer from the surrounding. A factor which is inevitable and can be ahindrance is the weather. The inside being similar allows the visible wallsurface to be finished with the desired quality, veiling the void for anyinstallation services.
“The layer type construction of such a façade element inplatform frame construction is thus complementary i.e. built up in such a waythat the layers supplement each other, with each individual layer performing essentiallyjust one function” (Deplazes,2013). Quality and composition of the materials in a platform frame system arefundamentally defined by the systems supplier. Slab like wood such as pineproduces board and beams in various sizes and dimensions which is veryuseful for stockpiling and planning aspine is a very accessible type of wood.3.3 Building materials Pinewhich is one of the main woods used in the construction of the buildingcontains high resin content resulting in an increase in resistance to decaymaking it a suitable material for the structural framework.
“The strength of the wood isfundamentally affected by the direction in which it is loaded in relation tothe grain. In the direction of the grain, the bending strength is directlyproportional to the density of the wood “(Wood Products, 2018). Alongside pine,plywood is also used in the framework for the Multi-generational residencybuilding. Plywood structural strength from its original wood combined with itslaminated design provides the structural framework with exceptionally highstrength.
“Thegrains of each veneer are laid at 90-degree angles to each other. This makesthe whole sheet resistant to splitting, especially when nailed at the edges. Italso gives the whole sheet uniform strength for increased stability.
Furthermore, plywood has a higher strength to weight ratio as compared to cutlumber. This makes it ideal for flooring, webbed beams, and shear walls”(Understand Building Construction, 2018).3.2 The strength and durability oftimber Currenttimber construction involves characterised semi-finished products by adescending sequence. The first step involves saw timber, of high and mediumproperty such as squared sections and board that are constructed fortraditional methods of working. Glue laminated timber such as ash which is usedin the construction of the Multi-generational residency because of itsdurability and is one of the most important semi-finished products.
The secondprocess produces strips, battens and laminations which are created to formmulti-plyboards, solid timber panels etc. This process is used in theMulti-generational building which includes batten plasterboard. The waste fromthe procedures is cut down further into finer wood such as sliced and peeledveneers. This utilizes the raw materials to its maximum worth, along with regulatingthe irregular and unwanted properties of the wood.
Since wood is natural itresults in variabilities such as knots and interlocked grains which reduces thestrength of the wood. Due to these minor setbacks neighbouring particles are neutralizedand the structure of the wood based properties display little scatter resultingin a 5% fractile to establish the permissible stresses.