Hello,
I have modeled a tower with one panel configuration of XH1 and discontinuous X bracing (XDISC)
Upon reveiwing the detailed report, the results shows cross brace capacity being checked taking the tension in the other member into consideration and based on that the total length L=L1+L2 checked (paragraph below)
May I get some explanation why total length checked for the discontinuous braing case ?
Thanks in advance
Members: 1205 1206 Intersecting X brace: 1207 1208 at node: 1204 Braces not continuous Section: 63X5EA Y fy: 355.0 fu: 480.0 Hot rolled D B Tf Tw: 63.00 63.00 5.00 5.00 Ag An rx ry rv: 611.65 521.65 19.34 19.34 12.42 No. bolts: 1 BH: 18.00 L Bolts: 1 M16-8 8.8 Ac: 201.0 fy: 620.0 fv: 496.0 fu: 827.0 No. shear planes: 1 Ply th: 5.00 fyp: 355.00 fup: 480.00 X: 0.00 Y: 0.00 Z: 0.00 Cap: 73.7 Total member length: 4120.8 Rotational stiffness ratios (restraint/member): my: 0.0 0.0 0.0 mz: 0.0 0.0 0.0 Case: 3000 Axial force range: 0.1c 0.4c Memb Curve L L/rx L/ry L/rv KL/r fy' Fcr íPnt íPnc 1205 b4 1982 102.5 102.5 159.5 159.5 355.0 68.0 140.8 37.4 1206 b4 2139 110.6 110.6 172.2 172.2 355.0 58.4 140.8 32.1 check cross brace capacities: Pb1 Pb2 Pb L1 L2: 0.11c 0.36c 0.36c 1981.75 2139.03 Px1 Px2 Px : 0.01t 0.26c 0.26c Tension/compr. in X brace < 0.2, L = L1 + L2 = 4120.8 1205 b4 4121 0.0 213.1 0.0 213.1 355.0 38.1 140.8 21.0