Roof trusses - an important element in the roof construction

When building a carcass of any house, erectionroof is the final stage. Its strength and reliability depend on the correct installation of each element. A special role is played by trusses. This element of the roof is very laborious and requires serious attention. Increasingly, when building houses, people resort to buying parts of the roof already assembled at the factory. However, this is too much for money, and many are trying to cope on their own.

Today you can find different truss farms,which are in good harmony with the general design of almost any roof. The purpose of this element, as a rule, is to retain the weight of the roofing material. If the farms are of a factory type, then all aspects must be taken into account in them to properly create a foundation for the crate. In other words, truss rafters - a set of bars and boards - should be connected in accordance with the established procedure according to the roof design. For fastening, bolts, nails and keys of a ring-type type are used.

When installing finished roof trusses assupports use beams to cover the main frame, on which the ceiling or flooring of the second floor is sewn. They cut into the beams and tighten bolts for reliability.

Quite often occur in constructionwooden truss farms. The construction system is very rigid, using a well-dried beam of solid wood. The bars are cut to the desired length and laid so that they are parallel; as a rule, these are two plaques. Then, short blocks of the same dimensions are joined by long blocks, thus forming the necessary overlap elements.

Someone is trying to self-farmrafter at home. But it is worthwhile to understand that without such experience and knowledge it is not so easy to build such an important element. In any case, you will have to contact specialists for advice. By origin of the farm can be:

• wooden;
• metal;
• reinforced concrete.

If, nevertheless, you are persistent in your desire to try to make this roof element yourself, then you need to adhere to the following rules:

1. HIt is necessary to study the fastening elements of the rafter elements,because the stability of the rafters will depend on the strength of the roof. There are different versions of the assembly; you can collect as convenient as you want, but with the exact dimensions.
2. All the finished trusses are rigidly fastened to the supporting beams, using anchor bolts or metal brackets. Do not forget that the rafter should have a ledge 30 cm behind the Mauerlat.
3. If too large spans for farms are formed, in particular, more than 4.5 meters, then it is necessary to invent additional wooden supports of the rafters.

Each element requires serious attention andstudy. Bolt connections must be tightened tightly, and the structure must be stable. Do not be frightened if you find that the trusses will hang out even after fastening. The real rigidity in the common frame will be obtained when the crate and the roofing material fall.