<p>This Architectural Drawing of AutoCAD of Sectional plan of Pile cap. All piles shall be reinforced with not less than 4 longitudinal steel bars having an area of <strong>not less than 1.25 percent and not more than 4.0 percent of the gross cross-sectional area of the pile</strong>. The materials used are <strong>long steel bars with longitudinal protrusions between the piles held in shape by thinner tie wires</strong>. Once this steel mat is laid, timber is attached around the perimeter to contain the wet concrete mixture. For more details and information download the drawing file.</p>