The design strength , Pu based on gross area
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- The 1 × 8 plate is shown in the figure. The holes are for 3/4-in Ø bolts. Compute the net area of each of the given members. (Ans. 6.44 in^2)Determine the effective net area of the L7 × 4 × 1/2 shown in the figure. Assume the holes are for 1-in Ø bolts. Use the U values given in Table 3.2. (Ans. 3.97 in^2)A double-angle shape, 2L7 3 4 3 3⁄8, is used as a tension member. The twoangles are connected to a gusset plate with 7⁄8-inch-diameter bolts throughthe 7-inch legs, as shown in Figure P3.4-5. A572 Grade 50 steel is used.a. Compute the design strength.b. Compute the allowable strength.
- Determine the Net Area for the following Plate Section consider all possible Cases. The Plate thickness is 1-in. and the bolts' diameter is 7/8-in. s = 6.0 " g = 2.0 "0.1: An MC9x23.9 is connected with 3 /4-inch diameter bolts as shown below. A572 Grade 50 steel is used. Determine the design strength for the section.an angle bar 100x100x11 mm tension member is connected with 20-mm-dia bolts as shown in the fig. both legs of the angles are connected. use fy=248 MPa and Fu=400 MPa. 1. determine the nominal strength for tensile yielding in the gross section. a. 515.59 kN b. 429.67 kN c. 545.60 kN d. 390.10 kN 2. determine the effective net area of member a. 1573 mm^2 b. 1632 mm^2 c. 1605 mm^2 d. 1815 mm^2 3. determine the nominal strength for tensile rupture in the net area. a. 642 kN b. 730 kN c. 554 kN d. 650 kN
- Determine the nominal tensile strength of the single angle. Consider 7/8" diameter bolt and A242 steel with Fy = 50 ksi and Fu = 70 ksi. L6x6x3/4 d = 6 in. b = 6 in. t = 0.75 in. k = 1.25 in. wt./ft. = 28.8 plf. A = 8.46 in.^2 x = 1.77 in.8. Considering sag rods and tie rods at third points, what is the required diameter of sag rods? (rounded value) A 20m Fink Truss are spaced at 'S' meters o.c. the purlins are made up of C10X20 sections and are spaced 1.1967m on centers. The truss has a height of 4m. Roof LL is 'RLL' N/m2 of roof surface and roof covering is assumed to be 'RDL' N/m2 of roof surface. Determine whether the purlins are adequate to carry such loadings. Fy = 248 MPa. C10X20 properties: w=29.76kg/m, A=3787.09mm2, Ix=32.84x106mm4, Iy=1.17x106mm4, Zx=317.91x103mm3, Sx=258.92x103mm3, Zy=44.25x103mm3, Sy=21.47x103mm3 S (m) RLL (N/m^2) RDL (N/m^2) 6.00 900 900A PL 3/8 x 7 tension member is connected with three 1-inch-diameter bolts, as shown in Figure P3. 2-1. The steel is A36. Assume that Ae = An and compute the folowing. a. The design strength, Pu based on gross area b. The design strength, Pu based on effective area
- Given the truss shown, solve the following. Use A36 steel and assume there are two lines of three 19 mm bolts in each flange. Hole diameter is assumed to be three mm more than the bolt diameter. Neglect the weight of the section. a.What is the capacity of member CG? b. Design member CG using a W section. c. What is the tensile capacity of the section for CG based on gross area?An L8 × 4 × 3/4 with two lines of 3/4-in Ø bolts in the long leg and one line of 3/4-in Ø bolts in the short leg. Compute the net area of each of the given members. (Ans. 6.52 in^2)Determine the available strength of an L6 x 4 x 3/4 attached through the long leg to a gusset plate with ten 7/8 in. bolts at a 3 in. spacing in two lines. Use A36 steel. Determine the (a) design strength by LRFD and (b) allowable strength by ASD