Roof structure with canvas panels and a plurality of lattice girders to receive the canvas panels in between as well as a lattice girder for such a roof structure

摘要

The roof arrangement comprises lattice beams (11) with two grooves (17,18) located on both sides of a central strap (13). The central strap has a rectangular box profile and the grooves are provided on the longitudinal sides. An upper strap (12) and a lower strap (14) are both spaced at the same distance from the central strap. Sloping stiffening bars (16) are provided between the upper and lower straps and are arranged perpendicularly to the connecting bars (16).