The MG Precast programme includes 6% and 10 % double-sloped roof beams. The prestressed concrete A beam has avariable cross section and full rectangular section at its ends. The roof beams are manufactured in two widths, 50 cm and 54 cm.

Neoprene pads support these beams, which carry secondary RC elements such as purlins or beams and TT slabs. The beam ends have openings that are mounted on reinforcment bars protruding from the columns. The openings are then filled with cement mortar. The types, dimensions and load capacities are shown in following tables and diagrams.