... building height more than 4 m, must be set with a wall of rising up a safety net, later ... bar a no fault, crooked; Around the net with metope clearance to less than 15 cm; Nets lows ... without high. Because construction need temporary dismantled already set up a safety net, the construction unit must ... to regulations by construction unit recovery, and the unit set checked, can be used. 3, often should ...