Roof construction for buildings

In a roof construction for buildings, particularly buildings which do not have a north-south alignment, comprising a space framework formed by rods and knot elements, with first rods in a top chord and second rods in a bottom chord and diagonal rods connecting said first and second rods, whereby the diagonal rods are arranged in groups in a plurality of intersecting planes, running oblique to the horizontal, and the intersecting planes including the diagonal rods are arranged in groups that are parallel to each other,

• the improvement characterized in that:
• a section of planes, which include groups of diagonal rods of the space framework (33, 35, 36) is aligned independent of the alignment of the buildings (5, 30, 31, 41) in the direction of the highest position of the sun, and
• solar collectors (18) are arranged in said planes and mounted on the diagonal rods wherein the framework (33,35,36) is deformed on condition that for sets of rods (15,150) pointing in the direction of the highest elevation of the sun and with parallel upper chord axes, the junctions (14) of the lower chord form a grid with grid lines (34) parallel to the building contours and presenting essentially uniform spacings (L.sub.a,L.sub.b) along each axis.