Urban service distribution network

摘要

Network which comprises a principal gallery and a secondary gallery, the section of which is appreciably smaller, both composed of ribbed modules. The two galleries abut with each other and are joined on the outside via one of their walls, the longitudinal centres of said walls being in a coplanar position in order to receive common covering slabs and fittings (connections). The secondary gallery houses a gas-supply conduit and the free space is filled in with sand or another similar dry material, the covering slabs resting on the edges of the walls and on the mass of sand, compressing it and preventing the existence of empty spaces which could give rise to the formation of gas pockets. IMAGE