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This material is copyright - all rights reserved. Reproduced under licence from The Steel Construction Institute on 12/2/2007 To buy a hardcopy version of this document call 01344 872775 or go to http://shop.steelbiz.org/ Steel Designers' Manual - 6th Edition (2003) 796 Worked examples Fsv = end reaction/ number of bolts 185 = = 46. 25 kN 4 F sm Fa v = Z bg a is the eccentricity of bolt group Zbg is the elastic modulus of the bolt group nn ( + 1) p = 6 where p is the bolt pitch 185 ¥ 50 Fsm = = 37 kN Ê 4 ¥ 5 ¥ 75ˆ Ë 6 ¯ \ resultant shear on the outermost bolt is Fs = ( 46. 25 = 59. 2 kN + 37 ) F s/2 = 29.6 kN Subject Chapter ref. No. 3 WEB CLEAT CONNECTION Design code Made by DBM Sheet no. BS 5950 Checked by BD The shear resistance of a single bolt in double shear is given by: P s = ps As 2 2 12 / 26 2 6.3.2.1 where ps is the bolt shear strength As is the shear area of the bolt Table 30 3 Fv = 375 ¥ 245/ 10 kN = 91. 88 kN P s > Fs/2 \ the shear capacity of the bolt group is adequate.
This material is copyright - all rights reserved. Reproduced under licence from The Steel Construction Institute on 12/2/2007 To buy a hardcopy version of this document call 01344 872775 or go to http://shop.steelbiz.org/ Steel Designers' Manual - 6th Edition (2003) Worked examples 797 Subject Chapter ref. No. 3 WEB CLEAT CONNECTION Design code Made by DBM Sheet no. BS 5950 Checked by BD Check 3 – Shear and bearing capacity of cleat connected to supported beam Shear The basic check for shear is that the shear capacity of the leg of the Fv angle cleat (Pv) must be greater than half the end reaction Ê ˆ Ë 2 ¯ P v Fv ≥ 2 For shear the following three checks must be made: • shear capacity of the gross section • shear capacity of the net section • block shear Shear capacity of the gross section The shear capacity of the gross section is given by the following expression: Pv = 0.6 pyAv where py is the design strength of the angle 4.2.3 Av is the shear area of the angle For an 8 mm thick angle py = 275 N/mm 2 Av = 0.9A Table 9 4.2.3 where A is the gross area for a 90 ¥ 90 ¥ 8 angle 300 mm long A = 300 ¥ 8 = 2400 mm 2 \ Av = 0.9A = 0.9 ¥ 2400 mm 2 = 2160 mm 2 3 \ Pv= 0. 6 ¥ 275 ¥ 2160/ 10 kN = 356. 4 kN 356.4 kN > 92.5 kN Shear capacity of angle cleat at gross section is adequate. 26 3
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