Buy BS EN CRANES – GENERAL DESIGN – PART 1: GENERAL PRINCIPLES AND REQUIREMENTS from SAI Global. Click here to find out how to access this document. BS EN Cranes – general design. General principles and requirements. Publication Year. BS EN Cranes. General design. General principles and requirements. standard by British-Adopted European Standard, 04/30/.
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There is a distinction between ultimate limit states and serviceability limit states as follows: Limit states and proof of competence of machinery 3 Licensed Copy: A flow chart illustrating the limit state method for the proof calculation based on stresses is shown in Figure 2.
BS EN 13001-1:2015
Search the history of over billion web pages on the Internet. The fatigue assessment of the combined effect of sb histories – interaction – is based on the action of the independent ones. Basic terminology, methodology ISO Various BSI electronic information services are also available which give details on all its products fn services. The machinery concerned and the extent to which hazards are covered are indicated in the scope of this standard.
Figure 9 — One parameter representation of stress histories frequencies of stress amplitudes referred to constant stress ratio or constant mean stress 4.
For the proof of fatigue strength, occasional and exceptional loads are usually neglected. For dated references, subsequent amendments to or revisions of any 4 Licensed Copy: Summary of pages This document comprises a front cover, an inside bz cover, the EN title page, pages 2 to 28, an inside back cover and a back cover.
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A task r can be characterised by a specific combination of crane configuration and sequence of intended movements.
BS EN – Cranes. General design. General principles and requirements
EN ISO 1 21 Therefore it is necessary to transform the two-parameter frequencies enn stress cycles into one- parameter frequencies for constant mean stress or constant stress ratio. The service conditions are determined by the following parameters: General principles and requirements EN Marking 26 Licensed Copy: Load actions Part 3.
1300-1 cranes or crane configurations where all the loads from different drives acting simultaneously do not affect each other because they are acting at right angles to each other i. The range of total numbers of working cycles C is classified in Table 2. Key a working space 1 b working space 2 Figure 4 — Service frequencies n ri and during task r in the working spaces 1 and 2, average linear displacement in the direction of movement of the drive under consideration Working movements within one working space shall be considered as a separate task.
Full text of “Safety British Standards”
The total number of working cycles of a crane during its useful life can be separated into the numbers of working cycles corresponding to several typical tasks. Using the established rules of metal fatigue the large number of variable magnitude stress cycles are condensed to one or two parameters.
When establishing the load combinations, consideration shall be given to the use of the crane, taking into account its control systems, its normative instructions for use, and any other inherent conditions, where they relate to the specific aim of the proof of competence.
To prevent these hazards with a margin of safety, it shall be shown that the calculated extreme values of load effects from all loads acting simultaneously on a crane and multiplied with an adequate partial safety coefficient, as well as the estimated histories of load effects, do not exceed their corresponding limit states at any critical point of the crane. Moveable cabins EN The average number of accelerations p of the drive under consideration is classified in Table 5 and illustrated in Figure 5.
The stress history is a numerical presentation of all stress variations that are significant for fatigue.
Magnitude, position and direction of all loads which act simultaneously in the sense of a load combination, shall be chosen in such a way that extreme load effects occur in the component or design detail under consideration. Basic load combinations are given in EN Service conditions ba considered in a general way, independent of the type of crane and the way it is driven.
NOTE Specific requirements for particular types of crane are given in the appropriate European Standard for the particular crane type. The following is a list of significant 113001-1 situations and hazardous events that could result in risks to persons during normal use and foreseeable misuse. These static equivalent loads are considered as deterministic actions, which have been adjusted in such a way that they represent load actions during the use of the crane from the actions or circumstances under consideration.
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