Roofing work

Roof shape is selected depending on the purpose of building and its size. Appointment of roof joists to protect the house from weather and drainage of water from the walls and the cap. The roof of any structure consists of two main parts: the roof and rafters. Roofs come in many different configurations. Single-pitch roof is most often rooted outbuildings, garages, carports. For residential and houses traditional gable roof forms and roof. They are easy to manufacture and are covered by any roofing materials. In the southern areas more often arranged gambrel roof, because they better resist wind loads. Of the roofing materials most reliable and durable properties have slate. For low-rise buildings the best roofing material is tile, but it requires reinforced rafters because of the weight of tile. Roof steel is used in complex configurations roofs. Roll roofing used in the coating business premises or as temporary cover in their houses. In the one-story houses with an average load-bearing wall is usually satisfied with sloping roof rafters, one end resting on the outer wall, the other - on the run, or rack positioned above the middle wall. Elements of the truss connects the dry element staples, nails. By chopped wall ends of rafters are fastened straps. The stone wall rafters are attached as follows: first into the wall, no higher than the fourth joint of masonry, the top is hammered metal ruff. By ershu twist of wire attached to two loops rafters. The ends of the rafters stone house based on a board, put the entire length of the wall, which distributes the load from the rafters at the wall. In the rafters and sheathing in place check the chimney from the stove, arrange fire break. Between elements of the rafters, pipes and crate leave a gap of 13 cm Naslonnye rafters - these are the same floor beams, but they are not placed horizontally, and obliquely, in support of different heights. Supports are either two exterior walls or the outer and inner walls. When the device gable roof trusses need to naslonnyh wall-reliance. Rafters opposite roof slopes may be in one plane and placed on the ridge run alternately. Naslonnye rafters easy to assemble, do not require complex mechanisms for installation. Nodes naslonnyh trusses are harvested from braces, struts. For trusses with braces and struts span between the outer walls of 6-8 m, and for trusses with braces and struts - 8-10 pm racks are made from the same boards as the rafters. Ridge run is made from timber 10x10 cm chopped and bruschatyh homes naslonnye and hanging rafters rest on the upper end wall, and clamp attached to a second crown, starting from the top. Hanging rafters - are in one plane and are rigidly interconnected. Truss rests on two end supports. Rafters hanging rafters abut one another in the skate and create raspor (pressure), which passed the walls and can overturn them. To avoid this, you need a bottom chord trusses. To install the hanging rafters must be made in advance to raise the rafters each separately on the attic floor, and only then assembling them, using the auxiliary struts and sawing of planks for the temporary fixing farm. Nodes trusses hanging from the rafters collect bolt or without a crossbar on spans up to 6 or 8 feet. Literal single puff is made from the same boards as the rafters, for a double torque will suit thinner boards. Linings and bolt fit boards 25-30 mm. If the stiffness of the roof truss is provided, then the anti-wind loads in the transverse direction are set 2.1 diagonal ligaments (struts). Braces are made of thick planks of 30-40 mm, fastened to the bottom of the rafter feet, and by the middle of the next. The most convenient way to put struts on the average wall. Board in such a case, nailed to the counter and sleepers. Cross-section trusses depends on the size of the span, pitch rafters and roof pitch. The most common pitch rafter 120 cm