Two steel plates with Sy = 50 ksi are attached by transverse-loaded fillet welds, as shown in Figure P11.1. Each weld is 4 in. long. E60 series welding rods are used, and good welding practice is followed. What minimum leg length must be used if a force of 33,000 lb is to be applied with a safety factor of 3.0?
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- Can a tee weld be strong if the welds on both sides do not have deep penetration? Why or why not?An axially-loaded welded angular connection is shown SD-002 . The angular section 150 x 100 x 10 mm having an area of 2400 mm? is welded to a gusset plate having a thickness of 10 mm. All steel is A 36 (Fy = 248 MPa, Fu = 400 MPa) and E (70) electrodes (Fu = 484 MPa) is used. Using the shielded metal-arc welding process. Compute the value of "a" if T = 500 kN. (Please do not round-off to whole number the required thickness, use the exact (2 decimal) value.) 150 mm SD-00211.1 Two steel plates with S, = 50 ksi are attached by transverse-loaded fillet welds, as shown in Figure P11.1. Each weld is 4 in. long. E60 series welding rods are used, and good welding practice is followed. What minimum leg length must be used if a force of 33,000 lb is to be applied with a safety factor of 3.0? F = 33,000 lb FIGURE P11.1 D F = 33,000 lb E60 series welding rods S = 50 ksi (plates) SF = 3.0 Note: There are two 4 in. welds.
- Problem 14.3.A A 4 × 4 x 2-in. angle of A36 steel is to be welded to a plate with E 70 XX electrodes to develop the full tensile strength of the angle. Using %-in. fillet welds, compute the design lengths for the welds on the two sides of the angle, assuming development of tension on the full cross sec- tion of the angle. A=3.75 inch2 L1= 10.94" L2 = 5.09" IF only connected leg, L=7.7"; 4.75 each side5. A steel cylindrical air receiver with 5 feet diameter and pressure load of 180 psi, design stress of 9500 psi maximum. The pressure vessel is to be provided with a 1.5 in diameter drain valve installed at the bottom of the vessel and a safety pressure relief valve is installed either at the topmost or at the side with a pop-out rating of 200 psi. Assume a 100% weld joint efficiency. The lap welding tensile strength is 65,000 psi. Determine the bursting pressure of this air receiver. psi02: Two plates, 20 mm thick, are welded together by means of transverse-fillet welds. The ultimate tensile strength of a weld metal is 415 MPa. The surface finish factor of the weld surface is 0.5, and the size factor is 0.85. The reliability is 90%. Determine the length of the weld if the factor of safety is 2.5. The transverse force on the welds is 80 kN, which is completely reversed under fatigue loading. Take: A=13mm. 25 A, Toe Good luck
- 4. Design a welded connection to resist the loading shown below (service load). A double angle tension member, 2 L5x5x5/16, is connected to a 3/8 inch thick gusset plate with fillet welding. Fy = 50 ksi for the angles and Fy = 36 ksi for the gusset plate. Compute the size and length of welding on the side of angles based on LRFD and indicate the information on the sketch. 1 = %" 2L5 x 5 x h6 D = 30 k L= 75 kUsing SMAW process, E70 electrodes and an A572 steel. Determine the length of the side fillet welds for the full capacity the 125x100x10mm angle tension member as shown below. Assume that the member is subjected to repeated stress variations making any connection eccentricity undesirable. Check the block shear strength of the member. Assume that the WT chord has sufficient strength to develop the weld strengths and the thickness of its web is 12mm. Use U = 0.87 for class use and LRFD Method onlyMaterial Strengths: Fy = 248 MPa, Fu = 400 MPa Method: Use ASD. A single angle L127X89X19 is welded (longitudinal and transverse welds) on one leg (shorter leg) togusset plate; thus, there are no holes. The length of the longitudinal welds is 150 mm. Which of the following most nearly gives the allowable tensile load?
- Assume that two 1.5-mm thick steel sheets are being spot welded at a current of 4000 A and current-flow time is 0.3 s. Using electrodes 5 mm in diameter, estimate the amount of heat generated and the amount of heat required to melt the weld nugget. Use an effective resistance of 350 un. Take u= 9,7 Joule/mm Which one of the following are correct? O a. If the electrodes were 7 mm diameter, the amount of heat generated would decrease b. The amount of heat generated by the equipment is between 1600 to 1700 Joules c. The equipment has enough power to weld the steel sheets. d. The equipment does not have enough power to weld the steel sheets e. The amount of heat required is between 700 and 750 JoulesThe arm in the figure is combined with a rod with a diameter of d=30 mm and a neck (corner) weld with a thickness of a= 5mm to the rod wall.sourced with. The force acting on the arm is F=2 kN. The lengths are L1=L2=100 mm. Joined parts are made of St37-2 (ak=235 N/mm2) material. Welding is I. Quality and has no impact effect. Check if the source in zone A is safe. (S=1.5 V1=0.8)Q1-A shielded metal arc welding operation is performed on steel at E = 30 volts and I = 225 amps. The heat transfer efficiency fi= 0.85 and melting efficiency f₂=0.75. The unit melting energy for steel Um = 10.2 J/mm3. Solve for: (a) the rate of heat generation at the weld and (b) the volume rate of metal welded