Steel Designers Manual - TheBestFriend.org

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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) 572 Worked examples The Steel Construction Institute Silwood Park, Ascot, Berks SL5 7QN Subject Chapter ref. ROAD BRIDGE Design code Made by RT Sheet no. BS 5450 Checked by GWO Nodal points notation: wmm,6u7 Li L2 L3 L4 L5 L6 L7 LS The design will be limited to the following members U6–U7 Top chord L7–L8 Bottom chord U1–L3 Diagonal U2–L3 Vertical From the computer output, Member Dead Dead Super HA HB FTWY Steel Concrete Dead kN kN kN kN kN kN U6–U7 -1695 -3041 -869 -2428 -3113 -530 L7–L8 1658 2974 850 2342 3244 518 U1–L3 580 1039 297 836 1157 181 U2–L3 -419 -812 -232 -648 -843 -141 (U6–U7) U6 32.5 58.3 16.7 60.1 145.8 10.1 U7 34.1 60.4 17.5 62.1 87.0 10.7 (L7–L8) L7 15.2 27.2 7.8 33.3 95.8 4.7 L8 16.2 28.9 8.3 32.7 34.0 5.1 (U1–L3) UI 25.3 45.4 13.0 36.7 48.5 7.9 L3 -24.4 -43.8 -12.5 -35.3 -50.0 -7.6 (U2–L3) U2 22.1 39.7 11.4 32.2 44.4 6.9 L3 -20.5 -36.6 -10.5 -29.9 -41.5 -6.4 19 5 Unfactored axial loads Unfactored bending moments kNm
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) The Steel Construction Institute Silwood Park, Ascot, Berks SL5 7QN Subject Chapter ref. ROAD BRIDGE Design code Made by RT Sheet no. BS 5450 Checked by GWO Worked examples 573 For load combination 1 Part 2, 4.4 load combination 1a Part 2, T1 at SLS 1.0DS + 1.0DC + 1.25DL + 1.2HA + 1.0FTWY at ULS 1.05DS + 1.2DC + 1.75SDL + 1.5HA + 1.0FTWY load combination 1b at SLS 1.0DS + 1.0DC + 1.25DL + 1.1HB + 1.0FTWY at ULS 1.0DS + 1.2DC + 1.75SDL + 1.3HB + 1.5FTWY Factored Axial loads & Bending Moments Member Load Combination 1a Load Combination 1b ULS SLS ULS SLS AXIAL BM AXIAL BM AXIAL BM AXIAL BM kN kNm kN kNm kN kNm kN kNm (U6–U7) U6 -11387 239 -9222 193 -11792 338 -9733 281 U7 248 201 268 222 (L7–L8) L7 11087 119 8980 96 11791 194 9738 162 L8 123 99 118 98 (U1–U3) U1 3901 171 3160 138 4151 179 3429 148 L3 -164 -133 -177 -146 (U2–L3) U2 -3004 149 -2428 121 -3128 159 -2578 131 L3 -138 -112 -147 -122 Load combination (1b) critical for members selected. The tensile members are designed at the ULS only. Part 3, 12.2.3 19 6
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