Upper roof plan of an apartment in AutoCAD, dwg file.
<p>This Architectural Drawing is AutoCAD 2d drawing of Upper roof plan of an apartment in AutoCAD, dwg file. The most significant reason why apartment buildings have <strong>flat roofs</strong> has to do with the cost of erecting a building with a flat roof versus erecting a similarly sized building with a conventional, sloped roof. Flat roofs are much less expensive to build.</p>