MKAPEB

Roof Live Load

The roof live load is calculated in accordance with EN 1991-1-1 (Eurocode 1): Actions on structures – Part 1-1: General actions – Densities, self-weight, imposed loads for buildings [1]. 

Roofs are classified by accessibility into three categories, as defined in Table 6.9 (Categorization of roofs) [1].

For buildings modeled in MkaPEB, the roof loaded area is assumed to be Category H [1]; therefore, MkaPEB by default imposes an imposed roof load of qk=0.4 kN/m2.

According to Note 4 (see figure below), “On roofs (particularly for Category H roofs), imposed loads need not be applied in combination with either snow loads and/or wind actions.” [1]. MkaPEB accounts for this note when generating load combinations.

Reference:

[1] EN 1991-1-1: Eurocode 1: Actions on structures - Part 1-1: General actions - Densities, self-weight, imposed loads for buildings. https://www.phd.eng.br/wp-content/uploads/2015/12/en.1991.1.1.2002.pdf