During the construction of the frame of any house, the erection of the roof is the final stage. Its strength and reliability depend on the correct installation of each element. A special role is played by trusses. This roof element is very laborious and requires serious attention. Increasingly, when building houses, people resort to buying roof parts already assembled at the factory. However, this is too affordable, and many are trying to cope on their own.
Today you can find different truss trusses that are in good harmony with the general design of almost any roof. The purpose of such an element, as a rule, is to maintain the weight of the roofing material. If the farms are factory-type, then all aspects must be taken into account for the correct creation of the base for the crate. In other words, truss trusses - a set of bars and boards - must be connected in the prescribed manner according to the roof design. For fasteners, bolts, nails and dowels of gear-ring type are used.
When installing finished rafter trusses, beams are used as supports to overlap the main frame, on which the ceiling or floor covering of the second floor is hemmed. They are cut into beams and bolted together for reliability.
Quite often found in the construction of wooden trusses . The construction system is very rigid; a well-dried timber made from hard wood is used. The bars are cut to the desired length and laid so that they are parallel; as a rule, these are two blocks. Then short blocks of the same size connect the long blocks, thereby forming the necessary size overlap elements.
Someone is trying to independently perform truss trusses at home. But it is worthwhile to understand that without experience and knowledge it will not be so simple to build such an important element. In any case, you will have to turn to specialists for advice. By farm origin can be:
- wooden;
- metal;
- reinforced concrete.
If, nevertheless, you are persistent in your desire to try to make this element of the roof yourself, then you need to adhere to the following rules:
- Nit is necessary to study the fasteners of the rafter elements, because the strength of the roof will depend on the stability of the rafters. Build options are different; You can collect as you prefer, but subject to exact dimensions.
- All ready-made roof trusses are rigidly fixed to the support beams using anchor bolts or metal staples. Do not forget that the rafter leg should have a protrusion of 30 cm per Mauerlat.
- If too wide spans are formed for trusses, in particular, more than 4.5 meters, then it is necessary to come up with additional wooden supports for the rafter elements.
Each element requires serious attention and study. Bolted joints must be tightly tightened, and the design must have stability. Do not be alarmed if you find that roof trusses hang out even after fastening. They will get real rigidity in the general frame when the crate and roofing material are laid.