Industrially prefabricated light engineering roof board

摘要

The roof board comprises a concrete plate (3) and several spaced grid supports (5) whose lower sides (6) are embedded in the plate and whose upper sides (9) are connected to the lower sides by webs (8). A channel part (10) opening upwards has a flat U-shaped profiled section cast completely with concrete (11). The webs are welded at the top to the side pieces (12) of the channel part and at the bottom to the sides of the supports. An insulation material (17) is provided in the interspace between concrete plate and cover plates (15). The cover plates are fixable on bearing blocks (13) fixed on the upper side of the grid supports in a spot pattern.