Underground wall structure details in AutoCAD, dwg file.

<p>This Architectural Drawing is AutoCAD 2d drawing of Underground wall structure details in AutoCAD, dwg file. Structural elements may include external and internal load-bearing brick or masonry walls, mud walls or timber-framed walls; columns of stone, cast iron or concrete; stone, brick or concrete vaults; timber, iron or steel beams, trusses, girders and many others.</p>