Wujiang buy asphalt shingles, asphalt shingles to buy [], [glass tile], [shingles]. [Soft tile], [rubber tile], [W] find special wooden Zhang 18,758,129,303, we sell [asphalt shingles], [glass tile], [shingles]. [Soft tile], [rubber tile], [W] Chalet dedicated, professional manufacturers, good quality and cheap price. Asphalt tile roof bearing structure can generally be divided into load-bearing brick walls, beams and roof trusses load bearing and so on. (1) roof trusses bearing cross wall when the house is small, often supported between the purlins roof trusses, roof trusses that form known as load-bearing, as shown. (2) load-bearing brick cross wall spacing is small (no more than 4m) and has a separate load-bearing function and houses, can be replaced by a cross-wall puzzle to the roof trusses to support the purlins, this approach is called load-bearing brick walls, as shown in show. (3) It is in the form of load-bearing beams traditional structure of China, it is composed by the columns and beams bent, purlins placed between the beams and roof loads to withstand contact each bent into a complete skeleton. This structure forms a beam discontinuity reasonable enough, beam section requires a larger, overall consumption of wood more fire-resistant and durability are poor, high maintenance costs, has been rarely used.