Homework Answers
Design load of the tie member in tension =62.4 kips
We know, yield strength of Grade 50 steel, is 50 ksi
As, we know yield strength=Load/area
=>area=Load/yield strength
Minimum area of this member is =
62.4/50=1.248 in^2
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Problem 4. Design of a steel truss member Given: A tie in the bottom chord of...
(a) Warren truss (b) Howe truss (c) Pratt truss (d) Baltimore truss (e) Parker truss Figure...
(a) Warren truss (b) Howe truss (c) Pratt truss (d) Baltimore truss (e) Parker truss Figure 2: Truss Types (Nielson Text) The truss bridge has the following properties/characteristics: 1. Span length (bottom chord): 168 ft 2. 14 panels (12 ft length per panel) 3. All diagonals are 45 degrees 4. Simple truss (all members are pin-connected and loads are only applied at the joints) 5. Simply-supported (pin at one end, roller at the other) 6. 13 ft width between trusses...
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Designing a truss bridge This lab involves the design of a truss bridge, which is a Pratt truss and should be designed to handle the loads shown in Fig- ure l (1 kip = 1000 lb). Note that the loads are the same on each of the two trusses for the bridge, so what is in Figure 1 is only half the loading on the bridge. Your job is to develop an optimal design for the bridge, Figure 1. Schematic...
16 The truss in Fig. 7.B supports a roof dead load of 16 psf. Trusses are spaced 24-in. о.с., and...
16 The truss in Fig. 7.B supports a roof dead load of 16 psf. Trusses are spaced 24-in. о.с., and the roof live load is to be in accordance with the IBC. Lumber is No. 2 DF-L. Fasteners do not reduce the area of the members. Truss joints are assumed to be pin-connected. CM 1.0, C, 1.0, and C,-1.0 Find: aThe required member size for the tension (bottom) chord using ASD. b. The required member size for the tension (bottom)...
Find the lightest W section for a tension member made of A572 Grade 50 steel. The...
Find the lightest W section for a tension member made of A572 Grade 50 steel. The axial tension in the member due to dead load is 70 kips due to live load is 10 kips. The connections at the end of the member include 7/8 in diameter bolts, one per line.
Problem 5: Design of Idealized Compression Member A 20-ft long column is pinned at the bottom...
Problem 5: Design of Idealized Compression Member A 20-ft long column is pinned at the bottom and fixed against rotation, but free to translate, at the top. It must support a service dead load of 110 kips and a service live load of 110 kips. a) Select the lightest W12 of A992 steel. Use the column load tables b) Select the lightest W18 of A992 steel. Use the trial-and-error process.
3. Design a tension member using a single angle of A36 steel with bolted connections (4...
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Homework Problem H 7.E Consider the truss shown below with the loading on joints D, K, S and U. Given: Find: For this p...
Homework Problem H 7.E Consider the truss shown below with the loading on joints D, K, S and U. Given: Find: For this problem: a) Determine the external reactions acting on the truss at supports A and H b) Identify all zero-force members in the truss. c) Determine the load carried by members BC, CJ and MN. Identify each member as either being in tension, in compression or carrying zero load. For this problem, use the following parameters: h 30...
Steel Design 2. (50 pts) Design an A36-steel tension member 16 ft long consisting of two...
Steel Design
2. (50 pts) Design an A36-steel tension member 16 ft long consisting of two channels, bolted through their webs to a single 1 inch gusset plate, to transmit 75 kips DL and 93 kips LL. The bolts are 7/8 in. Bolt spacing 4 inch and bolt edge distance 3 inch. In addition to checking block shear in the channels, design the thickness of the gusset plate to resist block shear.
Figure 1 shows a parallel chord truss of span 4 m and depth 3 m. Take E =200 kN/mm2. The solution follow the member lab...
Figure 1 shows a parallel chord truss of span 4 m and depth 3 m. Take E =200 kN/mm2. The solution follow the member labelling (1)- (17) as shown in the Figure) (7) tension members all have a cross-sectional area of 2000 mm2 and compression members have an area of 2500 mm2. Find the vertical deflection and horizontal deflection of the joint A. (In your (8) (14) (10) (12) (11) A (5) (4) (3) 4 PANELS @ 4 m =...
2. Design Wide flange column section only of A992 steel to serve as a pinned- end main member column 30 ft long to carry an axial compression loads in a braced structure, based on AISC LRFD metho...
2. Design Wide flange column section only of A992 steel to serve as a pinned- end main member column 30 ft long to carry an axial compression loads in a braced structure, based on AISC LRFD method. The dead load is 50 kips A992 13-0" and live load is 70 kips. The member has strong axis direction supported at 17ft height from the bottom of the column. Dead load is 20 kips and live load is 40 kips. Assume the...
(a) Warren truss (b) Howe truss (c) Pratt truss (d) Baltimore truss (e) Parker truss Figure 2: Truss Types (Nielson Text) The truss bridge has the following properties/characteristics: 1. Span length (bottom chord): 168 ft 2. 14 panels (12 ft length per panel) 3. All diagonals are 45 degrees 4. Simple truss (all members are pin-connected and loads are only applied at the joints) 5. Simply-supported (pin at one end, roller at the other) 6. 13 ft width between trusses...
Designing a truss bridge This lab involves the design of a truss bridge, which is a Pratt truss and should be designed to handle the loads shown in Fig- ure l (1 kip = 1000 lb). Note that the loads are the same on each of the two trusses for the bridge, so what is in Figure 1 is only half the loading on the bridge. Your job is to develop an optimal design for the bridge, Figure 1. Schematic...
16 The truss in Fig. 7.B supports a roof dead load of 16 psf. Trusses are spaced 24-in. о.с., and the roof live load is to be in accordance with the IBC. Lumber is No. 2 DF-L. Fasteners do not reduce the area of the members. Truss joints are assumed to be pin-connected. CM 1.0, C, 1.0, and C,-1.0 Find: aThe required member size for the tension (bottom) chord using ASD. b. The required member size for the tension (bottom)...
Problem 5: Design of Idealized Compression Member A 20-ft long column is pinned at the bottom and fixed against rotation, but free to translate, at the top. It must support a service dead load of 110 kips and a service live load of 110 kips. a) Select the lightest W12 of A992 steel. Use the column load tables b) Select the lightest W18 of A992 steel. Use the trial-and-error process.
3. Design a tension member using a single angle of A36 steel with bolted connections (4 bolts minimum). Loads are: 20 Kips DL, 15 Kips LL. The design must satisfy both LRFD and ASD requirements. Make any reasonable assumption in the design process.
Homework Problem H 7.E Consider the truss shown below with the loading on joints D, K, S and U. Given: Find: For this problem: a) Determine the external reactions acting on the truss at supports A and H b) Identify all zero-force members in the truss. c) Determine the load carried by members BC, CJ and MN. Identify each member as either being in tension, in compression or carrying zero load. For this problem, use the following parameters: h 30...
Steel Design
2. (50 pts) Design an A36-steel tension member 16 ft long consisting of two channels, bolted through their webs to a single 1 inch gusset plate, to transmit 75 kips DL and 93 kips LL. The bolts are 7/8 in. Bolt spacing 4 inch and bolt edge distance 3 inch. In addition to checking block shear in the channels, design the thickness of the gusset plate to resist block shear.
Figure 1 shows a parallel chord truss of span 4 m and depth 3 m. Take E =200 kN/mm2. The solution follow the member labelling (1)- (17) as shown in the Figure) (7) tension members all have a cross-sectional area of 2000 mm2 and compression members have an area of 2500 mm2. Find the vertical deflection and horizontal deflection of the joint A. (In your (8) (14) (10) (12) (11) A (5) (4) (3) 4 PANELS @ 4 m =...
2. Design Wide flange column section only of A992 steel to serve as a pinned- end main member column 30 ft long to carry an axial compression loads in a braced structure, based on AISC LRFD method. The dead load is 50 kips A992 13-0" and live load is 70 kips. The member has strong axis direction supported at 17ft height from the bottom of the column. Dead load is 20 kips and live load is 40 kips. Assume the...
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