2) option 2: using the materials to strengthen the roof taluy2.1) use the coarse stone framed This approach uses the coarse stone wall lined box, ground, secure the cross platform extension still proceed normally, without the roof taluy as designed.This approach has the advantage is cost, to withstand the effects of natural factors and relative stability. However, the downside is that approach covers the way many little influence to the layout and construction of infrastructure works over the sidewalk.
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