This architectural drawing is OPENINGS IN R.C. WALLS design in AutoCAD 2D drawing, dwg file, CAD file. Because they significantly increase a building's lateral strength and stiffness when exposed to powerful ground shaking, reinforced concrete structural walls are frequently utilized as lateral force-resisting components in structures in areas of moderate-to-high seismic danger. For more information and details download the drawing file. Thank you for visiting our website cadbull.com.