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Full text of “Safety British Standards”
Again there may be more recent versions of the document. These normative references are cited at the appropriate places in the text and the publications are listed hereafter.
The stress histories from these occasional loads may be estimated in the same way as those from the regular ones and shall be taken into account for the fatigue assessment. Basic load combinations are given in EN This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. Technical principles and specifications ISO Compliance with a British Standard does not of itself confer immunity from legal obligations.
BS EN 13001-1:2015
Figure 1 illustrates the general layout of a proof calculation for cranes. Marking 26 Licensed Copy: Part 3 is only at 13010-1 stage; the use of Parts fn and 2 is not conditional to the publication of Part 3. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover. The allowable stress method is a special case of the limit state method, where the partial safety factors are given the same value, which combined with the resistance coefficient, forms an overall safety factor y f.
Want access to British Standards? In some applications the effect bss occasional loads can occur regularly. The relative number of working cycles a r for each task r is given by the expression a.
Allgemeine Conception generale – Partie 1: The analysis 130001-1 load actions from individual events or representative use of a crane representative load histories is required to reflect realistic unfavourable operational conditions and sequences of actions of the crane. A flow chart illustrating the limit state method for the proof calculation based on stresses is shown in Figure 2. 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.
Limit states ba proof of competence of steel structures. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. The average linear index lin or angular index ang displacement X is classified in Table 3.
Because of its special character, the allowable stress method is only reliable in specific cases.
For the proof of fatigue strength of components the stress histories acting on them may also be directly specified, considering the service conditions, by selecting a class S according to Table 6. The above given two-parameter presentation bw stress histories is shown in Figure 6. If a different level of safety is required in some instance, a risk factor y n may be agreed upon and applied.
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.
The above given parameters are illustrated in Figure 4.
Using the established rules of metal fatigue the large number of variable magnitude stress cycles are condensed to one or two parameters. General principles and requirements. A flow chart illustrating the allowable stress method is shown in Figure 3.
BS EN – Cranes. General design. General principles and requirements
For cranes or crane configurations where all the loads from different drives acting simultaneously do em affect each other because they are acting at right angles to each other i. The relationship between stress amplitudes to failure by fatigue and mean stress or stress ratio for the component under consideration for fatigue assessment is shown in Figure 7. Floating cranes prEN When the classified ranges of parameters are used, the design shall be based on the maximum values of 130011-1 parameters within the specified classes.
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