Two Way Slab

Slab Thk Longer span (Ly) Shoter span (Lx) Effective depth w (LL+SDL+DL)

Ly / Lx

DESIGN OF TWO WAY SLAB 250 mm SDL 13.39 m LL 10.97 m 219 mm 19.58 kN/m²

( Both PT & RC) 1.8 kN/m² 5 kN/m²

1.22

As Per IS 456 - 2000 Mx (Shorter span) My (Longer span) αx

Negative Positive

Moment : Mx Negative Positive Reincement Detail Only R.C Slab

αx wLy² αy wLy² 0.07 0.07

αy

Negative Positive

My

Negative Positive

Mx

Support Mid Span

Ast(mm²) Ast(mm²)

2195.78 2195.78

My

Support Mid Span

Ast(mm²) Ast(mm²)

1632.56 1632.56

152.98 kNm 152.98 kNm

Design of PT Slab : Tendon = 5s Bay Width = Moment of resistance Calculation : Mu

.87 fpu Aps (d-dn) 159.22 kNm

0.05 0.05 117.68 kNm 117.68 kNm Dia of Rod Spacing(mm) 12 51.51 12 51.51 12 12

1000 mm Stress Calcultaion: P A Z e

558 kN 250000 mm² ### mm³ 82 mm

69.28 69.28

Min Reincement " T8 - 200 c/c" (Ast= 468 mm²)

36.07 kNm Tensile Stress

Hence Safe

P/A + Pe/Z - M/Z -3.17 kN/mm²