9.1.1 Input Data

Slab thickness

20 cm

Material

Concrete C20/25

Reinforcement steel B 500

Reinforcement

A_s,prov = 4.45 cm²

d = 17 cm

Self-weight

0.20 ⋅ 25.0 = 5.00 kN/m

Plaster and flooring

1.5 kN/m

→ g_k = 6.50 kN/m

Live load for office

2.00 kN/m

Load of partition walls

1.25 kN/m

→ q_k = 3.25 kN/m

Combination factor

ψ₂ = 0.3 (Live load for office)

Combination factor

ψ₂ = 1.0 (Load of partition walls)

Quasi-permanent load

6.50 + 0.30 ⋅ 2.00 + 1.0 ⋅ 1.25 = 8.35 kN/m

Maximum moment

M_{quasi-permanent} = 8.35 ⋅ 4.21² / 8 = 18.50 kNm