PRESTRESSED HOLLOW CORE SLABS 120MM Sectional Information Cross-section area: 108,507 X 103mm2Moment of inertia: 161,572 X 106mm4Section modulus top: 2,679 X 106mm3Section modulus bottom: 2,713 X 106mm3Total breadth of webs: 468mmCentroidal axis from bottom: 32,5mm Conc. 28 day strength: 50MPaConc. strength at transfer: 35MPaMod. of elasticity of concrete: 34kN/mm2Stressing of strand / wire: 70%Check: stresses at transfer: OKCover to steel: 30mm Structural Information Standard Wiring Patterns A = 8 X 5mm wires B = 12 X 5mm wires C = 9 X 5mm wires + 3 X 9,53mm strand D – 7 X 5mm wires + 5 X 9.53mm strand Load Capacity Table Design loads include self weight, grouting between joints and finishes up to 1,5kN/m2.