Documentation

This document contains all National annex values, which are used in SDF - Basic package

Clause 4.1 Characteristic values, paragraph (1)

The characteristic values of snow load on the ground s_k is calculated from next formulas:
s_k = 0,5 kN/m² for A ≤ 100 m
s_k = 0,50 + 0,007(A - 100)/6 for 100 m ≤ A ≤ 700 m

Clause 4.3 Treatment of exceptional snow loads on the ground, paragraph (1)

Exceptional snow load is not considered.

Clause 5.2 Load arrangements, paragraph (7)

C_e = 1,0 for all topographies

Clause 5.2 Load arrangements, paragraph (8)

C_t = 1,0 for all roof materials

Clause 5.3.3 Pitched roofs, paragraph (4)

Standard drifted load arrangement is used.

Clause 5.3.4 Multi-span roofs, paragraph (3)

Standard drifted snow load is used.

Clause 5.3.4 Multi-span roofs, paragraph (4)

If α ≥ 60°, the coefficient μ₂ = 1,6

Clause 5.3.5 Cylindrical roofs, paragraph (1)

μ_3,max = 2,0

Clause 5.3.5 Cylindrical roofs, paragraph (3)

Standard drifted snow load is used.

Clause 5.3.6 Roof abutting and close to taller construction works, paragraph (1)

0,8 ≤ μ_w ≤ 2,0
5 m ≤ l_s ≤ 15 m

Clause 5.3.6 Roof abutting and close to taller construction works, paragraph (3)

Annex B is not applied

Clause 6.2 Drifting at projections and obstructions, paragraph (2)

Annex B is not applied in the Belgium

Clause 6.3 Snow overhanging the edge of a roof, paragraph (1)

This clause did not apply in Belgium because altitude in the Belgium never exceeds 800 m above sea level.

Clause 6.3 Snow overhanging the edge of a roof, paragraph (2)

This clause did not apply in Belgium.