Steel Buildings in Europe

Title Appendix B Worked Example: Design of a truss node with gusset 43 of 44 5 - 122 Table B.25 Connection N3 – Gusset component – Bolt b 1 – Reduction of total number of bolts Design values Resistance values Total number of bolts 6 5 V,b1,Ed F 164,03 189,76 197,68 S,Rd F b1,h,Ed V, F 20,21 28,43 165,19 b1,h,Rd b, F b1,v,Ed V, F 162,78 187,62 169,16 b1,v,Rd b, F Table B.26 Connection N3 – Gusset component – Bolt b 3 – Reduction of total number of bolts Design values Resistance values Total number of bolts 6 5 V,b1,Ed F 146,49 189,76 197,68 S,Rd F b1,h,Ed V, F 131,10 182,40 165,19 b1,h,Rd b, F b1,v,Ed V, F 65,36 52,36 169,16 b1,v,Rd b, F At this stage, increase the value of the spacing p 1 from 65 to 75 mm. So all the bolts satisfy the criteria. Look for example the results for bolt b 1 . Table B.27 Connection N3 – Gusset component – Bolt b 1 – Increasing of spacing p 1 to 75 mm Design values Resistance values V,b1,Ed F 180,06 197,68 S,Rd F b1,h,Ed V, F 28,74 225,70 b1,h,Rd b, F b1,v,Ed V, F 177,75 220,50 b1,v,Rd b, F 3.6.3. Connection N1 – Influence of number of bolts Reduce the number of bolts from 4 to 3 by suppression of bolt marked b 3 (see Figure B.25). The moment due to eccentricity decrease whereas the design shear loads per bolt increase. And two bolts ( b 1 and b 2 ) do not again satisfy to the criteria relative to the design bearing resistances (see tables below).