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DENMAY STEEL SPLICE BOX DATA SHEET CALCULATIONS AND TEST REPORTS AVAILABLE ON REQUEST GB/US/EU PATENTS GRANTED/ PENDING |
CONNECT-A-BEAM-Splice Box Calculations |
SPLICE BOX - STEEL BEAM JOINING DEVICE |
Denmay Steel HCS House, 137 Wellington Road, Portslade, West Sussex. BN41 1DN Tel: 01273 430399 |
Denmay Steel Splice Boxes Maximum third-point bending moments at splice positions to BS449 for beam sizes under normal applications in fully restrained condition & splice box design |
Splice Box Calculations: |
Site: Denmay Steel Job: Splice boxes - Max loads unspliced for sections Job number: 3537 - 01 ---------------------------------------------------------------------- Splice box for 152 x 89 x 16 UB Splice box maximum allowable BM limited by allowable tension in M20 grade 8.8 bolts Lever arm = 185 mm Allowable tension in grade 8.8 M20 bolts at 335 N/mm2 = 82.1 kN 2no. bolts = 164.2 kN Allowable BM at splice box therefore = 164.2 x 0.185 = 30.3 kNm ---------------------------------------------------------------------- Splice box for all other sections Splice box maximum allowable BM limited by allowable tension in M20 grade 8.8 bolts. Lever arm = 285 mm Allowable tension in grade 8.8 M20 bolts at 335 N/mm2 = 82.1 kN 2no. bolts = 164.2 kN Allowable BM at splice box therefore = 164.2 x 0.285 = 46.8 kNm ---------------------------------------------------------------------- |
Denmay Steel Splice Box Safe Load Table Allowable Bending Moments on Splice Boxes Section size BM at 1/3rd span of fully loaded beam Max. BM allowable on Splice Box Load to be applied at mid-span to achieve max. BM on splice box |
Section size 152x89x16 UB 178x102x19 UB 203x102x23 UB 203x133x25 UB 203x133x30 UB 254x102x28 UB 254x146x31 UB 254x146x37 UB 254x146x43 UB 305x102x33 UB 305x127x48 UB 305x165x40 UB 305x165x46 UB 305x165x54 UB 152x152x23 UC 152x152x30 UC 152x152x37 UC 203x203x46 UC 203x203x52 UC 203x203x60 UC |
BM at 1/3rd span of fully loaded beam 8.4 13.8 21.4 23.7 29.5 37.3 42.3 52.2 61.1 50.2 74.4 67.7 78.0 91.1 12.8 17.9 22.6 46.5 53.9 62.0 |
Max. BM allowable on Splice Box 8.4 13.8 21.4 23.7 29.5 37.3 42.3 46.8 46.8 46.8 46.8 46.8 46.8 46.8 12.8 17.9 22.6 46.5 46.8 46.8 |
Load to be applied at mid-span to achieve max. BM on splice box 10.5 17.5 27.5 30.5 38.0 48.5 55.0 60.2 60.2 60.2 60.2 60.2 60.2 60.2 16.0 22.5 28.5 60.0 60.2 60.2 |
Allowable Bending Moments on Splice Boxes: |
Bold figures denote splice box exceeds full load capacity of beam Italics denote limit to be imposed on BM at position of splice Bending moments taken from application of point load at mid-span of 4.5m length simply supported beam Fully loaded = fully restrained beam loaded to capacity or deflection limit at L/360 reached Fully loaded values are for guidance only Allowable max. BM at splice box position to be determined by calculation in all cases by Structural Engineer Splices to be applied at third-span |