2.1 when do start piling. Found not found solid rocks to the base supports of the building pit. Need to use sand instead of rocks, which increase the amount of piling a lot. 2.2 transport, structural parts, such as the large use and transport routes to transport? 2.3 installation of structural parts that are large and heavy, which must find a way to put the structure up to install and how to install it because it must be installed in the form of a Pin is bolted, but there is a part.
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