Select an American Standard Channel shape for the following tensile loads: dead load = 54 kips, live load = 80 kips, and wind load = 75 kips. The connection will be with longitudinal welds. Use an estimated shear lag factor of U = 0.85. (In a practical design, once the member was selected and the connection designed, the value of U would be computed and the member design could be revised if necessary.) The length is 17.5 ft. Use
a. Use LRFD.
b. Use ASD.
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Chapter 3 Solutions
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- Determine the design tensile strength of plate (200x8 mm) connected to 10-mm thick gusset using 20 mm bolts as shown in the figure, if the yield and the ultimate stress of the steel used are 250 MPa and 410 MPa, respectively. Add 1mm around the bolt for the hole. Use LRFD method. Plate 8-mm thick 2 3 40+ 30 301 T 200 mm Gusset 10-mm thick 3af 30 2_3 *40 40+ 50,54 +40arrow_forwardTension Member Design Problem 1. A channel shape is under 50 kips dead and 100 kips live tensile axial load as shown in the figure. The member is connected to a gusset plate with 10 inch longitudinal welds. Find the lightest channel shape to carry the loading. Use only vielding and rupture limit states to design. Use 50 ksi steel (Fy=50 ksi, Fu=65 ksi). (a) Assume yielding limit state controls in the design process; (b) After selecting the lightest section, check the rupture limit state. Do not redesing if needed. 1 Pa=50 kips PL=100 kips 10"arrow_forwardCompute the size of fillet weld for a bracket connection with ISMB 300 column as shown in figure. Permissible shear stress in weld = 110 MPa. %3D 425 mm 100 kN 300 Single 12 mm plate 250 mmarrow_forward
- A 100 x 100 x 10 mm angle is to be welded to a gusset plate. The angle carries a load of 200 kN applied along its centroidal axis which is 28.7 mm above the short leg as shown in the figure. Use an 8 mm fillet weld with a minimum tensile strength Fu = 483.33 MPa. Determine the length of a transverse fillet weld along the edge of the angle in order to avoid eccentricity of loading. Determine the length of side fillet weld required at the heel. Determine the length of side fillet weld required at the toe.arrow_forwardA plate is connected to the column using fillet welds as shown. The size of weld is 8 mm. Determine the following: a. Shear stress due to load alone b. Shear stress due to moment c. Maximum shear stress.arrow_forwardCalculate the maximum shear force in the welds in the given figure. P=160kN X = 150mm y= 125mm z=70mm 4 Y Narrow_forward
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- A channel C250x37 mm section is welded to a 9 mm gusset plate. Welding is not permitted on the back of the channel. All steel is A36 with Fy=250 MPa and Fu=400 MPa. Use E70electrodes having and Fu=485 MPa (SMAW) process. The maximum length of lap is 250mm. The size of fillet weld is 8mm. Assume the width of slot weld is 22 mm. Size of slot weld is 13mm Properties of C250x37 A = 4750 mm2 tw = 13.0 mm2 d = 254 mm a. Determine the force resisted by the slot weld in kN, when the full tensile capacity is 712.5 KN (from the gross yielding capacity using ASD) Hint: Full tensile Capacity = Force Resisted by Fillet and Slot Weld Round your answer to 3 decimal places.arrow_forwardThe five-bolt connection must support an applied load of P = 149 kips. If the average shear stress in the bolts must be limited to 50 ksi, what is the minimum bolt diameter that may be used for this connection? P Answer: d = i in.arrow_forwardTopic:Bolted Steel Connection - Civil Engineering *Use latest NSCP/NSCP 2015 formula to solve this problem *Please use hand written to solve this problem The bracket shown in the figure is supported by four 22 mm diameter bolts in single shear. The bracket is subject to an eccentric load of 150 kN. Use LRFD. Use A36 steel. Questions a) Determine the critical force on the most stressed bolt. b) Determine the nominal shear stress of the most stressed bolt.arrow_forward
- Steel Design (Activate Learning with these NEW ti...Civil EngineeringISBN:9781337094740Author:Segui, William T.Publisher:Cengage Learning