Design an optimize welded connection with fillet weld and E70XX electrodes to resist the dead load of 20 kips, live loads of 40 kips and wind loads of 10 kips. All steel is A36. Show your results on a sketch, complete with dimensions.

Topic:Welded Connection - Civil Engineering -Steel Design   *Use latest NSCP/NSCP 2015 formula to solve this problem *Use attached formula picture for block shear  *Please use hand written to solve this problem     A channel is used as a tension member with the web of the channel welded to a 9.5 mm thick gusset plate as shown in the figure. The tension member is subjected to the following axial loads. Use LRFD   Service dead load = 200 kN Wind load = 276 kN Service live load = 260 kN   For channel: Fy = 345 MPa   For gusset plate: Fy = 248 MPa Fu = 400 MPa   Size of E 70 electrodes = 4 mm Ultimate tensile strength of E 70 electrodes = 480; Fw = 0.6(480)   Questions : a) Determine the design factored tensile force. b) Determine the length of longitudinal welds "L". c) Determine the block shear strength of the gusset plate.

The equivalent stress for welding in given bracket connections would be if t = 5mm e i.e. Effective throat thickness of weld, use Fe410 steel and shop welding. P = 50 kN e = 200 mm h = 250 mm

Two plates are proposed to be jointed by welding as shown in the figure. Determine the size and length of the weld required to develop the full strength of the smaller plate which is 8 cm x 1.2 cm. Assume permissible tension in plate is 1500 kg/cm? and permissible shear in fillet weld is 1025 kg/cm. 8 cm) 12 cm