4. Up to roof stage
Foundation
4.1. Foundations Strip trenches will be excavated. If the site is sloping, the trenches will be stepped so that their base is always horizontal. A layer of blinding concrete will then be laid, and then the reinforcement of the strip foundation. All steel employed in the work will have a strength of 4,200kg/cm2. Where reinforcements meet at corners or steps, the joins will be strengthened with bends of the same diameter. An electrical earth in the form of a naked 35mm2 section copper wire will be set in place before pouring the concrete, as specified in the foundations plan. Trenches will be filled with HA-25 concrete.
Foundation reinforcement 4 Ă˜ 16 with bracings every 40 cm Electrical earth, naked 35 mm2 section copper wire
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