2D Autocad file has the foundation details. In this all column details are given clearly. Thickness of roof tile is 0.4mm. Two nuts can be used to reduce the risk of thread stripping especially if the threads are galvanised. Hot dip galvanising involves cleaning steel and immersing it in molten zinc to obtain a coating. Grout is generally a mixture of water, cement, and sand and is employed in pressure grouting, embedding rebar in masonry walls, connecting sections of pre-cast concrete, filling voids, and sealing joints such as those between tiles. Thanks for downloading the 2D Autocad file and other CAD files from our website.