Strut Bracings
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Strut Strut Design BS5950 Loads Live Load 3.5 KN/M^2 Dead Load(Factored) = 3.5 x 1.6 = 5.6 Dead Load 0.43 KN/M^2 Live Load(Factored) = 0.43 x 1.4 = 0.602 Area of Floor = 50.4 M^2 Total (Factored) = 312.5808 KN 6.202 KN/M^2 No off Struts in each direction = 2 . Stability Force 2%= 6.251616 KN Distance strut is away from base of column= 1.2 Underside height of floor = 2.408 M Force in Strut = 7.01 KN Length of strut= 2.69 Effective Length of strut= 2.69 Struts Section Area Ryy Sxx SR N PE Theta Pc Safe Load 70*70*3.0 RHS 8.00 2.73 20.00 98.55 0.16 208.32 258.62 160.67 128.53 70*70*3.6 RHS 9.50 2.70 23.60 99.65 0.16 203.77 256.19 158.22 150.31 80*80*3.0 RHS 9.20 3.14 26.50 85.68 0.14 275.59 294.18 190.47 175.24 80*80*3.6 RHS 10.90 3.11 31.30 86.51 0.14 270.35 291.43 188.56 205.53 90*90*3.6 RHS 12.40 3.52 40.00 76.43 0.12 346.33 331.20 210.99 261.63 100*100*4.0 RHS 15.30 3.91 54.90 68.81 0.10 427.33 373.24 225.62 345.20 Section Section that can be used = <1.0 70*70*3.0 RHS 0.05 70*70*3.6 RHS 0.05 80*80*3.0 RHS 0.04 80*80*3.6 RHS 0.03 90*90*3.6 RHS 0.03 100*100*4.0 RHS 0.02 HOLDING DOWN BOLTS M12 chemset @ 80mm centres tension and shear capacity. Baseplate Reactions H= 2.08 KN 2 bolts T= 18 KN S= 14.55 KN for strut.(working load) V= 4.18 KN 4 bolts T= 36 KN S= 29.1 KN 6 bolts T= 54 KN S= 43.65 KN Bolt connections must be equal to or less than 1.0 T S Combined shear and tension. Connection satisfactory? 2 BOLT 0.23 0.14 0.07 TRUE 4 BOLT 0.12 0.07 0.02 TRUE 6 BOLT 0.08 0.05 0.01 TRUE Head Fixing M16 shear capacity with 10mm plate tag= 58.9 KN OK Page 1
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Transcript of Strut Bracings
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Strut
Strut Design BS5950
Loads Live Load 3.5 KN/M^2 Dead Load(Factored) = 3.5 x 1.6 = 5.6Dead Load 0.43 KN/M^2 Live Load(Factored) = 0.43 x 1.4 = 0.602
Area of Floor = 50.4 M^2 Total (Factored) = 312.5808 KN 6.202 KN/M^2No off Struts in each direction = 2 . Stability Force 2%= 6.251616 KN
Distance strut is away from base of column= 1.2 Underside height of floor = 2.408 MForce in Strut = 7.01 KN Length of strut= 2.69
Effective Length of strut= 2.69Struts
Section Area Ryy Sxx SR N PE Theta Pc Safe Load
70*70*3.0 RHS 8.00 2.73 20.00 98.55 0.16 208.32 258.62 160.67 128.5370*70*3.6 RHS 9.50 2.70 23.60 99.65 0.16 203.77 256.19 158.22 150.3180*80*3.0 RHS 9.20 3.14 26.50 85.68 0.14 275.59 294.18 190.47 175.2480*80*3.6 RHS 10.90 3.11 31.30 86.51 0.14 270.35 291.43 188.56 205.5390*90*3.6 RHS 12.40 3.52 40.00 76.43 0.12 346.33 331.20 210.99 261.63100*100*4.0 RHS 15.30 3.91 54.90 68.81 0.10 427.33 373.24 225.62 345.20
Section Section that can be used =
