In individual construction, rafters are often installed with their own hands, but this process takes a lot of time and is considered very time-consuming. Therefore, you can not make mistakes during installation in any case. The strength and reliability of the entire roof will depend on the correct implementation in the future. Depending on the type of installation chosen, the order of work may vary slightly, but the principle remains the same, which involves the creation of a reliable framework for the crate and roofing. Before the installation of the rafter system begins , you should decide on the shape of the upper part of the house and the coating. The distance between the bars and their cross section will largely depend on these parameters.
When planning to install the rafters with your own hands, you need to know that there are open and hanging structures. In the first case, the bars are supported by the ends on special supports and walls of the building. Racks can be located in the center or in two rows, while allowing to increase the width of the entire rafter system. As for the hanging structures, then with this option, the ends fall on a tightening in the form of a horizontal beam. She, in turn, relies on walls or a wall beam. Thus, the
rafters will not be able to part to the sides.
If rafters are made with your own hands, then you need to know at least about the front of the work. It is recommended to start with the
manufacture of stencil truss truss. It is done with the help of boards, which are located in the form of scissors. Free edges are placed on supports, and the resulting angle is fixed by a transverse crossbar. According to this pattern, the rest of the rafters are executed. They are fastened together by nails or self-tapping screws. Two finished farms are installed on opposite edges of the building. A cord is stretched from one skate to another, allowing you to align the other rafters.
When the rafters are installed with their own hands, the optimal methods for connecting the elements to each other are selected depending on the influence of various forces. For reliability, brackets, clamps, bolts, crossbars, struts and the like are used. In the upper part, the connection is carried out with a spike in half-tree or in a slotted way. Also, the bars should be well fixed to the wall part with a spike or tooth. It is strictly forbidden to make a notch closer than thirty centimeters from the edge of the tightening, otherwise the reliability of the design will be in question.
In addition, the rafters are strengthened with their own hands using bolts and clamps. The latter is much more reliable in this regard, because metal fasteners violate the integrity of the wood, causing decay and a decrease in strength characteristics. A crossbar in a half-tree also cuts into the rafter's leg , and reinforcement due to the plug also occurs. Additional reinforcement of this unit with the help of a bracket will not hurt. In the presence of compound puffs, splicing is carried out with an oblique or straight tooth, and well, metal plates are pulled together with bolts.