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PRESTRESS CONCRETE

Post tensioning   Materials PC Strands   Strands 0.50”   Nominal Diameter 12.7mm   Nominal Area 98.71mm²   Nominal Weight 0.775kg/m   Tensile Strength 1860N/mm2   Modulus of Elasticity 195kN/mm   Min Breaking Load of Strand 183.7kN   International Standard Used ASTM A416   Sheathings The sheathings for bonded tendons shall be spirally wound galvanized steel tubing made from galvanized steel strips of 0.3 to 0.4mm thickness. The sheathings shall be mortar tight to prevent entrance of cement grout during conc...