In the main structure construction of the complex building of Beijing Television project, hydraulic climb frame is used for the construction of L-shaped complex rectangle columns at the four corners.

These battens are attached to a wooden frame, generously spaced apart to offer occupants a view out as they climb, and to allow daylight to enter.

See grandpa moved to a long ladder, beside the door (frame), and then carefully took out a? Dogwood grass, worship worship days, union, and then slowly climb up the ladder.