Steel Buildings in Europe

Part 10: Model Construction Specification 10 - 40 Proposed Clauses Commentary 4.7 Actions induced by cranes 4.7.1 For the serviceability limit state verification, tests shall (or may not) be performed with the cranes on the supporting structures (specify the alternative to be recommended) § 2.3(6) of EN 1991-3 4.7.2 The following forces shall be included in the same group of simultaneous crane load components: (insert list of forces) § 2.5.2.2(2) of EN 1991-3 Insert one or several forces among the five horizontal types (a) to (e) listed in § 2.5.2.2(1) of EN 1991-3. 4.7.3 The longitudinal horizontal forces H L,i and the transverse horizontal wheel forces H T,i , caused by acceleration and deceleration of masses of the crane or the crab, shall be applied according to the following provisions: (insert provisions) § 2.5.2.2(4) of EN 1991-3 Otherwise, provisions given in Figure 2.3 of EN 1991-3 should apply. 4.7.4 The maximum number of cranes to be taken into account as acting simultaneously shall be: (insert number) § 2.5.3(2) of EN 1991-3 4.7.5 The Hoisting Class of the crane shall be: (specify class from HC1 to HC4) Hoisting class to be specified unless it is specified in the crane supplier specification. Reference can be made to Annex B (informative) of EN 1991-3 4.7.6 The vertical load to be applied to access walkways, stairs and platform shall be equal to: (insert provisions) § 2.9.1(1) of EN 1991-3 Otherwise, provisions given in § 2.9.1(2), 2.9.1(3) or 2.9.1(4) should apply. 4.7.7 The horizontal load to be applied to the guard rail shall be equal to: (insert provisions) 2.9.2(1) of EN 1991-3 Otherwise, provisions given in § 2.9.2(1) or 2.9.2(2) should apply. 4.7.8 To make allowance of relevant accidental actions: - Buffers are (or are not) used; - A crane with horizontally restrained loads can (or cannot) tilt when its load or lifting attachment collides with an obstacle. (specify construction conditions) 4.7.9 To make allowance for fatigue effects, the following operational conditions shall apply: (insert information) If sufficient information is provided, the fatigue loads can then be determined according to EN 13001 and Annex A of EN 1993-1-9. Otherwise, provisions of § 2.12 of EN 1991-3 should apply.