Guide to the major amendments in BS 5950-1:2000 (SCI by M Heywood

By M Heywood

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The first method, known as the “basic method” in BS 5950-1:2000, is applicable to equal and unequal angles and involves resolving the applied moments into their components about the principal axes u-u and v-v. 9. The second method, referred to as the “simplified method”, provides a simple alternative to the basic method, but it is only applicable to equal angles with b / t ≤ 15ε. 8pyZx when the heel of the angle is in tension. e. 2. BS 5950-1:1990 presented three alternative methods of analysis.

By contrast, in BS 5950-1:2000, both methods use qw and therefore yield exactly the same result in the case of fully stressed flanges. 1. 1 Tension field action in a plate girder It is generally necessary to provide an end anchorage to resist this horizontal force, however BS 5950-1:2000 gives the following two cases when an end anchorage is not necessary: 1. e. Vw = Pv. 2. If sufficient shear buckling resistance is available without forming a tension field. The existence of this condition is indicated by: Fv ≤ Vcr where Vcr is the critical shear buckling resistance and Fv is the maximum shear force.

Use of this document is subject to the terms and conditions of the Steelbiz Licence Agreement BS 5950-1:2000 does not propose the use of concrete casing of the steel frame to increase the value of ëcr. 41 P304: Guide to the major amendments in BS 5950-1:2000 Discuss me ... 4 introduces the concept of block shear failure and provides a simple method for ensuring that this failure mode is avoided. 1. Fr Fr Lv Lv Lt Lv Created on 30 March 2011 This material is copyright - all rights reserved. 1 Block shear In each case, failure occurs in shear along the line of bolts parallel to the applied force and, simultaneously, in tension along a perpendicular face.

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