Design of Plan Bracing Connections

Node No. = 1557 L/C = 109

Plan Bracing Member No 3182Axial Force 113.092 kN ( Maximum )

Memb = L90x90x8

Load Data

Fy = 250 N/mm2Sectional A 13.8 cm2

Axial Capac 155.25 kN > 113.092 KN, OK ( Tc = 0.45 x Fy x A )

Design for 75 % Axial capacity = 116.4375 kN

A) Connection Type-1 ( Bolted Conn.) Alternative

Grade of Bo 8.8Dia of Bolt 24 mm Root Area o366.5829 mm2Total Nos o 2

Capacity of BoltTensile Stre 286 N/mm2 Tension, Tc 104.8427 kNShear Stres 191 N/mm2 Shear, Vc 70.01733 kN

Shear Check

V = Max ( P or 75 % T ) / n

Shear per b58.21875 kN < Shear Capacity, OK

Weld length Calculations

Weld Thkne 6 mm sw = 100 N/mm2Length ReqP / ( sw x 0.707 x t ) lw Req.= 275 mm Weld Prov.2x(90+25+50+50)Weld Prov. 420 mm Weld Provide is OK

A) Profile Welded Connection

Weld length Calculations

Weld Thkne 6 mm sw = 100 N/mm2Length ReqP / ( sw x 0.707 x t ) lw Req.= 275 mm Lw = 2x(90+74)Weld Prov. 328 mm Weld Provide is OK