Xponexus Engineering

Eurocode Imposed Load Calculator

Pick an occupancy profile and location type to obtain the recommended imposed (live) load, concentrated load, and design load cases for floors and roofs according to EN 1991-1-1 guidance. Values are editable so you can match local National Annexes.

Floor + roof scenarios Combination factors (ψ) Print-friendly

Quick tips

Floor areas use categories A–F (residential, office, assembly, retail, storage, traffic).
Roofs expose flat or pitched configurations with snow / maintenance allowances.
Use the combination factors to view design variable actions (γQ × ψ).

γ_Q 1.5

Recommended partial factor for imposed loads (ULS)

Inputs

Load scenario

Eurocode presets

Occupancy / use Change the preset loads after selection if required. Location type Pitched roof uses slope to adjust q_k.

Area length

Area width

Zone label

Imposed load q_k

kN/m²

Concentrated load Q_k

ψ₀ ψ₁

ψ₂ Partial factor γ_Q Service class note Roof maintenance allowance

kN/m²

Output

Design values

Auto-updating

Recommended imposed load

Uniform load q_k

– kN/m²

Concentrated load Q_k

– kN

Design ULS q_d

– kN/m² (γ_Q·q_k)

Combination (ψ₀)

– kN/m²

Frequent (ψ₁)

– kN/m²

Quasi-permanent (ψ₂)

– kN/m²

Total area load (zone)

–

Maintenance allowance

–

Equivalent roof reduction

–

Project view

Imposed load summary

Multi-zone

#	Label	Type	q_k (kN/m²)	q_d (kN/m²)	ψ₀·q_k	Area (m²)	Total (kN)	Note
Average q_k				0.000	0.000	0.000	0.000