Select the lightest W12 section available to support a dead load of 810 kN and a live load of 1,235 kN. The member is 6.5 meters long and is assumed to have one line of holes in each flange and two lines of holes in the web for 20 mm diameter bolts. There will be four bolts in each line 75mm on center. Use A572 Grade 55 steel. Neglect block shear
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- A double-channel shape, 2C8 x 18.75 is used as a tension member. The channels are bolted to a ¾-inch gusset plate with % - inch diameter bolts. The tension member is A572 grade 50 steel and the gusset plate is A36. If LRFD is used, how much factored tensile load can be applied? Consider all limit states. →2" popoy |-|-|-|-|-| n оо- 0 0 0 0 x + = ³/8" 288×18.15The A double-channel shape, 2C250× 29.75, of A572 Grade 50 steel is used for a built-up tension member as shown. The holes are for 12 mm diameter bolts. Determine the total service load capacity if the live load is three times the dead load. The location of the centroid is 21.25 mm from the outer face of the web. a. Use LRFD. 100 100 . 100 100 b. Use ASD. Properties of C250 x 29.75 Ag = 2036 mm? br = 50 mm 62.5 d = 250 mm tw = 6 mm tr= 6 mm 62.5NEED ANSWER URGENT PLS!! A W 12 x 35 tension member of A992 steel (Fy = 350 MPa and Fu = 450 MPa) is connected through its flanges with two lines of 22 mm $ bolts in each flange as shown in the figure. The dead load is 40% of the total service load and the remaining 60% of the total service load is live load. Consider all limit states including block shear strength. Use ASD. 1. Compute the allowable fracture strength in KN.O 2. Compute the nominal block shear strength in KN.O 3. Compute the total service load capacity of the tension member in KN.O 4. Compute the service live load in KN.O 40mm 40mm W12x35 T section *40mm 75mm 75mmx 75mm 40mm : 0 +T
- A double-angle tension member, 2L 3 x 2 x 4 LLBB, of A36 steel is subjected to a dead load of 12 kips and a live load of 36 kips. It is connected to a gusset plate with one-line of 3/4-inch-diameter bolts through the long legs. Does this member have enough strength? Assume that A₂ = 0.85An. Ae Use LRFD. Use ASD. 1 2 IL Section CIVIL ENGINEERING STEEL DECIGNThe tension member shown is an L150 × 87.5 × 8. The bolts are 19 mm in diameter. If A36 steel is used, is the member adequate for a service dead load of 138 kN and a service live load of 138 kN? a. Use LRFD. b. Use ASD. 50 37.5 37.5 37.5 56.25 62.54. An UPE 300 is to be used as a tension member and it is bolted to a 10mm thick gusset plate with bearing type 8-M20 8.8 bolts as shown in the figure below. a. Check all spacing and edge distance requirements. b. Compute the allowable tensile strength of the channel UPE 300. Don't consider shear strength of the bolts and bearing strength of the bolt holes. [all dimensions are in mm] Material both for gusset plate and UPE 300: S275 F-275N/mm² Fu=430N/mm² UPE 300 Ag = 5660 mm² tw 9.5 mm x = 28.9 mm 70 160 70 + 10mm thick gusset plate +50+ 80 -80-80-50 o +50+80 -80 80-50 UPE 300
- Two (2) angles 150 x 90 x 12 tension member of A36 steel, Fy=250 MPa and F₁-400 MPa, is connected to a gusset plate with 22 mm o bolts as shown. It is subjected to the following service loa- a part of structure intended E OL-270 KN, LL= 450 KN, and WL-235 KN. The tension member i ublic assembly. Determine whether this member is adequate. Use LRFD. de 40mm F 70mm & 40m ↑ 16mm thick qusset plate 24150x90x12 401 70mm 70mm 70mm 40 mm4. Determine the service load capacity of 2C10X20 channels as a truss member attached to a 7/8 in gusset plate as shown in Figure e5.20. The steel is A572 Grade 65 and the 7/8 in diameter A325 bolts are in a bearing-type connection (A325- X) with no threads in the shear planes. The load is 25% dead load and 75% live load O 4@3-1-0 O C10 x 205. a bolted lap joint shown in the figure below. The bolts are 20m in diameter in 23 mm holes. The plates are 12m thick X350 Allowable stress of Plates: Tenaion in gross area0.60Fy Tension in net area0.50 Fu Shear on Net Area 0.30Fu Yield Strength of plate, Fy 248 Npa Ultinate tensile strength of Plate. Fu400 Mpa x, Find the safe load P based on a- Gross area yielding b. net area rapture c. block shear 2 of 3
- 1. A double-angle tension member, 2L 3 × 2 × 3/16 LLBB, of A36 steel is subjected to a dead load of 12 kips and a live load of 36 kips. It is connected to a gusset plate with 3/4- inch-diameter bolts through the long legs. Does this member have enough strength? Assume that Ae = 0.85An. a. ASD b. LRFD Section 1 (T COIC.:)(2) The connection shown below is bolted with 3/4 inch diameter, Group A slip-critical bolts in single shear. Assume that the bearing strength is adequate and use an elastic analysis to determine the maximum factored load that can be applied. 5.5" Column Flange o o O o o Gusset Plate 4sp. @3" O O 4" 30⁰ P₁ = ?The tension member shown in figure below is a PL ½ x 8 of A36 steel. The member is connected to a gusset plane with 1 ⅛ inch-diameter bolts. It is subjected to the dead and live loads shown. Does this member have enought strength? Assume that Ae=An. a. Use LRFD b. Use ASD