Horizontal box element built into the floor of a building and intended for the passage of the networks and for their connection to vertical service ducts.

摘要

Horizontal box element 10 accommodating the service networks of a building, characterised in that it is formed in a slab 1 of concrete which is built using formwork and which acts as a floor, and with which slab the box element is formed by the formwork, forms a downward projection, is provided with a lid 11 which makes the floor level and lies between two vertical service ducts. <IMAGE>