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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) 784 Worked examples Subject Chapter ref. No. 2 FIN PLATE CONNECTION Design code Made by DBM Sheet no. BS 5950 Checked by BD Check 4 – Shear and bending capacity of fin plate connected to supported beam For shear The basic requirement is that the shear capacity of the fin plate must be greater than the shear force. Pv ≥ Fv For shear the following checks must be made: • shear at the gross section • shear at the net section • block shear Shear (gross section) Pv = 06 . pyAv 2 py= 275N/ mm Av= 0. 9 ¥ 3200 = 2880 mm 0. 6 ¥ 275 ¥ 2880 \ Pv= kN 1000 = 475. 2 kN Shear (net section) The effect of bolt holes need not be allowed for in the shear area provided that: 085 . Av Av , net > Ke 0. 85 ¥ 2880 = = 2040 mm 12 . Av , net = Av - nDht 2 = 2880 - 4 ¥ 22 ¥ 10 = 2000 mm 2000 mm < 2040 mm 2 Therefore the effect of bolt holes needs to be taken into account. 26 9 4.2.3 6.2.3
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 785 Subject Chapter ref. No. 2 FIN PLATE CONNECTION The shear capacity of the net section is given by: P v = 0.7pyKeAv,net Design code Made by DBM Sheet no. BS 5950 Checked by BD 26 10 6.2.3 K e = 1.2 3.4.3 A v,net = 0.9Av - nDt = 0.9 ¥ 3200 - 4 ¥ 22 ¥ 10 mm 2 = 2000 mm 2 0. 7 ¥ 275 ¥ 1. 2 ¥ 2000 \ Pv= kN 1000 = 462 kN Block shear The block shear capacity is given by the following expression: Pr = 06 . pyt[ Lv + Ke( Lt - kDt) ] Lv= e + ( n-1) p = 40+ ( 4-1) 80 = 280 mm 6.2.4 t = 10 mm Ke = 1.2 Lt = 50 mm 3.4.3 k = 0.5 Dt = 22 mm P r = 0.6 ¥ 275 ¥ 10[280 + 1.2(50 - 0.5 ¥ 22)] 6.2.4 = 539.2 kN The shear capacity is given by the net shear capacity at the section P v = 462 kN 462 kN > 110 kN Therefore the shear capacity of the fin plate is adequate.
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