Rafter systems, rafters (complete set and installation), Orsha

Rafters are the basic bearing roof elements. The system of rafters has to sustain roofing material, loading of wind and snow. Wooden elements of rafters do of coniferous breeds of wood with moisture content no more than 20% processed by fire and biological protective structures.

The loadings perceived by a rafter design share on temporary and constant (which, in turn, happen long, short-term and special). Short-term loadings it: the people coming to a roof, the equipment which is in a roof zone, and also snow and wind loading. Constant loadings it is designs of a roof: roofing material, rafter system, heat-insulation layer and materials of finishing of a ceiling. To refer to special loadings seismic and to that similar influences.

Of course, to design a roof it is necessary to be the difficult person, and very well understanding the this case as calculation of rafters for the ordinary person who is not dealing to this sphere will be trudnovaty. For example, that to enter you a little into this business, so to say! The person who is engaged in roofs to be exact the designer counts optimum weight for rafters, snow, wind loading. Now you have to understand us that all this is difficult also without skills just anywhere. Generally so, for the qualitative transaction of a roof professionals are necessary. The main details in design of a roof will be: choice of sizes of biases of slopes and type of a roof, correct decision on an occasion of roofing material, and also calculation of a design of a roof. A set of materials of a roof influence projects of system of rafters, means it is necessary to choose a roof at a stage of the project of the house. Calculation of a design of rafters will be very important point during projecting of a roof, otherwise some mistakes in miscalculations and the roof at worst can fail therefore as you understood us that rafters are the main part in a roof, all other is already minor moment. Stability and durability provide to a roof the designs bearing it which are made of an obreshetka and just rafters. At rafters the constructive scheme is defined by an arrangement and existence of internal support, a roof form, and also overlapping space length.