Shukuma Flooring

PRESTRESSED HOLLOW CORE SLABS 200MM

Sectional Information

Cross-section area:                     174,855 X 103mm2

Moment of inertia:                       1 205,857 X 106mm4

Section modulus top:                   9,651 X 106mm3

Section modulus bottom:            9,642 X 106mm3

Total breadth of webs:                468mm

Centroidal axis from bottom:      34,5mm

Conc. 28 day strength:                   50MPa

Conc. strength at transfer:             35MPa

Mod. of elasticity of concrete:       34kN/mm2

Stressing of strand / wire:             70%

Check: stresses at transfer:            OK

Cover to steel:                                30mm

Structural Information

Standard Wiring Patterns

G = 10 x 9.53mm strand (over 8m span = 2 x 5mm top wire)

H + 2 = 9 x 9.53mm strand + 3 x 12.5mm strand + 2 x 5mm wires – top (over 9m span – 2 x additional x 5mm top wire)

J + 4 = 4 x 9.53mm strand + 8 x 12.5mm strand + 4 x 5mm wires – top

Load Capacity Table

Design loads include self weight, grouting between joints and finishes up to 1,5kN/m2.