Lanzhou supply factory direct bridge expansion joints, special available on a first-come, factory direct, quality and more secure, cash on delivery. Large favorably. Housing prevent cracks due to climate change. Its approach is: slot reserved a certain distance, the buildings are all turned off from the roof, walls, floors and above ground every member along the longitudinal direction of the building, building foundations because buried in the ground by the temperature change is small, do not disconnected. Expansion joint width is generally 2 cm to 3 cm seam fill insulation, expansion joints pitch two clearly defined architectural structure specification. If building the plane size is too long, because thermal expansion and contraction of the reason, could lead to excessive temperature stress in the structure, the need to structure a certain length position with joints to building divided into several parts, the seam is sewn temperature. Different architecture, different from the joints between China's current standard "Design of Concrete Structures" GB50010-2010 in this special provisions 8.1. Lanzhou supply factory direct bridge expansion joints.