Steel Buildings in Europe

Part 10: Model Construction Specification 10 - 39 Proposed Clauses Commentary 4.3 Wind loads 4.3.1 (Optional) The following rules for the velocity pressure distribution for leeward wall and sidewalls shall apply: (insert rules) § 7.2.2 of EN 1991-1-4. Certain rules may also be given in the National Annex. 4.4 Thermal actions 4.4.1 The following specific operational thermal effects shall apply: (insert list of specific thermal actions) § 5.2(2)P of EN 1991-1-5. due to heating, technological or industrial processes. 4.4.2 The following specific values of  T M and  T P shall apply: (insert values) § 5.2(3)P of EN 1991-1-5.  T M : linear temperature difference component;  T P : temperature difference between different parts of a structure given by the difference of average temperatures of these parts. 4.5 Actions during execution 4.5.1 The following rules concerning the safety of persons, on and around the construction site, shall apply: (insert rules) These rules are outside the scope of EN 1991-1-6. 4.5.2 Construction loads shall be as specified on the relevant drawings See Tables 2.2 and 4.1 of EN 1991-1-6. 4.5.3 Tolerances for the possible deviations to the theoretical position of construction loads shall be as specified on the relevant drawings If construction loads are classified as fixed loads. 4.5.4 The limits of the potential area of spatial variation of construction loads shall be as specified on the relevant drawings If construction loads are classified as free loads. 4.5.5 The following minimum wind velocity during execution phases shall apply: ... § 3.1(5) of EN 1991-1-6. In the absence of any choice in the National Annex. 4.5.6 The following rules of combination of snow loads and wind action with the construction loads shall apply: (insert rules) § 3.1(7) of EN 1991-1-6. In the absence of any choice in the National Annex. 4.5.7 The geometric imperfections of the structure and the structural elements during execution shall be as follows: (insert values) § 3.1(8) of EN 1991-1-6. In the absence of any choice in the National Annex. 4.5.8 Criteria associated with serviceability limit states during execution shall be as follows: (insert criteria) § 3.3(2) of EN 1991-1-6. In the absence of any choice in the National Annex. 4.5.9 The maximum allowable wind velocity during crane operations shall be ... § 4.7(1) of EN 1991-1-6. 4.6 Accidental actions 4.6.1 The following notional accidental loads shall apply: (insert accidental actions) Equivalent static design forces due to vehicular impact; Frontal and lateral dynamic design forces due to impact from river and canal traffic, as well as the height of application of the impact force and the impact area; Classification of structures subject to impact from derailed railway traffic ( § 4.5.1.2 of EN 1991-1-7);