Space frame structure high-altitude installation channel protection
The four passages at the stairway, elevator, passage, and reserved opening of the space frame structures installation project are called the "four portals" of installation site. All of them must be protected in accordance with the requirements of the specification and warning signs should be set. ①The handrails of stairs or ladders should be installed in time, otherwise, 1.2m high temporary guardrails should be installed along the stairs or ladders to allow operation and passage. ②The elevator shaft head under installation and construction shall not be transported vertically except for elevator installation. The elevator shaft should be equipped with 1.2m high guardrail or movable door to be firm and reliable. ③ At the passageway of the installation site, when there is high-altitude installation work on the upper part, a protective shed must be erected. The width of the shed should be greater than the entrance and exit, and the length should be set according to the height