G H 15 ft B C E 24 k 30 k 12 k 4 panels at 20 ft = 80 ft (a) Given Truss and Loading
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A: Hi! Thank you for the question As per the honour code, We’ll answer the first question since the…
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Determine the force in each member of the Warren truss shown in Fig. 10.20(a).
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- A Wide Flange Built Up beam is supported at both ends by a fixed support and has a length of 6.8m column to column. The flanges (450mmx20mm) are continuously welded to the web (500mmx18mm). The weight of the Built Up beam has a uniform load of 294N/m through-out its length. The brace is installed at both ends of the beam and has a space of 6.8m. The steel used is ASTM36. Determine the allowable bending stress of this beam.Analyze completely the compound truss loaded as shown below.A howe truss has six panels and each panel is 1m. The span is 6m and height 1.50m. Joints U1, U2, U3, U4, and U5 each carry a vertical full panel load PL = 2600lb and joints L0 and L6 each carry a vertical half panel load PL/2 = 1300lb. Find the value of maximum tensile stress of such member.
- Rigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 30-in.-long bronze [E = 15900 ksi, α= 9.4 × 10−6/°F] bar with a cross-sectional area of 1.00 in.2. Bar (2) is a 48-in.-long aluminum alloy [E = 9200 ksi, α= 12.6 × 10−6/°F] bar with a cross-sectional area of 2.50 in.2. Both bars are unstressed before the load P is applied. Assume L1=30 in., L2=48 in., a=32 in., b=44 in., and c=14 in. If a concentrated load of P = 29 kips is applied to the rigid bar at D and the temperature is decreased by 120°F, determine:(a) the normal stresses in bars (1) and (2).(b) the normal strains in bars (1) and (2).(c) the deflection of the rigid bar at point D. Solve for F2 and F1.Answers: F1 = kips, F2 = kips. Determine the normal stress in each bar. Use positive if tensile, negative if compressive.Answers: σ1= ksi, σ2= ksi. Determine the normal strain in bars (1) and (2). Use positive if tensile, negative if compressive.Answers:…Rigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 34-in.-long bronze [E = 14700 ksi, α=α= 8.4 × 10−6/°F] bar with a cross-sectional area of 1.50 in.2. Bar (2) is a 48-in.-long aluminum alloy [E = 9000 ksi, α=α= 12.4 × 10−6/°F] bar with a cross-sectional area of 2.00 in.2. Both bars are unstressed before the load P is applied. Assume L1=34 in., L2=48 in., a=36 in., b=44 in., and c=12 in. If a concentrated load of P = 23 kips is applied to the rigid bar at D and the temperature is decreased by 105°F, determine:(a) the normal stresses in bars (1) and (2).(b) the normal strains in bars (1) and (2).(c) the deflection of the rigid bar at point D.Design the tension members of roof truss shown in the figure. Use double-angle shapes throughout and assume 3/8-inch-thick gusset plates and welded connections. Assume a shear lag factor U = 0.85. The trusses are spaced at 25 feet. Use A572 Grade 50 steel and design for the following loads. Metal deck: 4 psf of roof surface Build-up roof: 12 psf of roof surface Purlins: 6 psf of roof surface (estimated) Snow: 18 psf of horizontal projection Truss weight: 5 psf of horizontal projection (estimated) a. Use LRFD. b. Use ASD.
- Rigid bar ABCD is supported by a pin connection at A and by two axial bars (1) and (2). Bar (1) is a 34-in.-long bronze [E = 15000 ksi, α=α= 9.2 × 10−6/°F] bar with a cross-sectional area of 1.75 in.2. Bar (2) is a 42-in.-long aluminum alloy [E = 10300 ksi, α=α= 11.9 × 10−6/°F] bar with a cross-sectional area of 2.25 in.2. Both bars are unstressed before the load P is applied. Assume L1=34 in., L2=42 in., a=30 in., b=42 in., and c=16 in. If a concentrated load of P = 27 kips is applied to the rigid bar at D and the temperature is decreased by 120°F, determine:For the given Bollman Bridge truss assembly shown in Figure 1and using the information given in Table 1, determine the internal forces acting along BC, EC and EHusing sectioning method if the point A is a roller support and point G is pin support. Also mention if the members are in tension or in compression.A howe truss has six panels and each panel is 1m. The span is 6m and height 1.50m. Joints U1, U2, U3, U4, and U5 each carry a vertical full panel load PL = 2600lb and joints L0 and L6 each carry a vertical half panel load PL/2 = 1300lb. Find the value of the stress of member L2L3.
- W 14 x 142 is used as a column having a length of 9.21 m. long. It is hinged at the r end and fixed at the lower end but there is a lateral bracing perpendicular to minor axis of the W section at a point 3.52 m. above the bottom support. It is assumed to be pinned connected at the bracing point. Using A 36 steel Fy= 248 MPa the NSCP Specificatioris. E, = 200000 MPa. Properties of W 14 x 142 A = 26967.69 mm2 d= 374.65 mm bf= 393.70 mm tf= 27.00 mm tw= 17.27 mm4 Ix= 695.11 x 106 mm4 Iy = 274.71 x 106 mm4 rx = 160.53 mm rY = 100.84 mm Assume: Kx = 0.80 for 9.21 m. length KY = 1.9 for the length on the upper support KY = 0.80 for the length on the bottom support Compute the slenderness ratio along x-axis.Design the beam to resist the loads shown using WSD Method. Take fc = 9 MPa, fs = 124 MPa, n= 11, bar diameter = 20 mm. Take b = d/2A structural steel member is in the form of tee. bf= 300mm , tf= 100mm, bw= 200mm, d=300, fy= 248 Mpa. Determine the following: a. location of plastic neutral axis from the top of the beam b. plastic section modulus c. plastic moment capacity