Metal should not be re bent once it has been formed nor should it be folded back on itself.
Roof slab steel details.
If a sheet must be bent a gentle 90 degree bend is the maximum recom mended.
Steel roof section details steel roof section design detail steel bar use make a slab amp.
Bending and bowing aluminum and steel roofing and siding sheets are rollformed from hardened tempered metal for maximum strength.
Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars.
Steel roof section design dwg file.
Design draw in autocad format.
Thickness of the slab is decided based on span to depth ratio specified in is456 2000.
The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab.
Best materials ph.
The diameter of bar generally used in slabs are.
This method has been used extensively since 1963 for slabs supported at the edges by walls steel beams or monolithic concrete beams having a total depth not less than about 3 times the slab thickness.
The dwg files are compatible back to autocad 2000.
Maximum spacing of main bar is restricted to 3 times effective depth or 300 mm whichever is less.
Main bar distribution bar difference top and bottom clear cover is 25 mm consider development length as 40 d thickness of slab 150 mm.