Homework Answers
Effective Length 4.7-2 An, HSS 10 x 6 x yis with F 46 ksi is used...
Effective Length 4.7-2 An, HSS 10 x 6 x yis with F 46 ksi is used as a column. The length is 15 feet. Both ends are pinned and there is support against weak axis buckling at a point 6 feet from the top. Determine a. the design strength for LRFD. b. the allowable stress for ASD.
Problem 2. Design and select an ASTM A992 (Fy" 50 ksi) W-shape column to carry an...
Problem 2. Design and select an ASTM A992 (Fy" 50 ksi) W-shape column to carry an axial dead load of 140 kips and live lond of 420 kips. The column is 30 feet long, and is pinned top and bottom in both axes. In addition, the column is laterally braced about the y-y axis (local weak/minor axis of the section) and torsionally braced at the midpoint. Limit the column size to a nominal 14 in. shape, that is W14 shape...
Determine the service axial compressive load (P) permitted on HSS 10x8x⅜ (Fy = 65 ksi) having...
Determine the service axial compressive load (P) permitted on HSS 10x8x⅜ (Fy = 65 ksi) having (KL)x = 20 ft and (KL)y = 10 ft. The load consists 35% dead load and 65% live load. Design code to comply with: 2016 AISC LRFD. (Hint: FTB L.S. need not be considered for a HSS section
11. (10 points) Check to determine if a W14x159 used as a column can support an...
11. (10 points) Check to determine if a W14x159 used as a column can support an axial dead load of 250k and an axial live load of 1000k if the length of the column is 14 feet and the value of G for Joint A has been determined to be 0.8. Use the LRFD Design Method and assume that the columns are bending about their y axis as shown. (Hint: The answer is in the Manual) W14x159 Fixed Base at...
. A W14x120 with Fy-50 ksi is used as a compressive member. Compute the nominal compressive strength, Pn, of this member. Support in strong direction Support in weak direction . A W14x120 with F...
. A W14x120 with Fy-50 ksi is used as a compressive member. Compute the nominal compressive strength, Pn, of this member. Support in strong direction Support in weak direction
. A W14x120 with Fy-50 ksi is used as a compressive member. Compute the nominal compressive strength, Pn, of this member. Support in strong direction Support in weak direction
Use LRFD method Find the capacity of the column P.. Assume Fy = 50 ksi. Column...
Use LRFD method
Find the capacity of the column P.. Assume Fy = 50 ksi. Column is braced laterally in all directions at the mid-height. (1) Draw the buckled shape of column. (ii) Find the recommended design K value. (iii) What is the unbraced length of column (iv) Find the capacity of column () Can the column support a loading of DL-300kips, LL=400kips Hint: ºn uses resistance factor . Use the appropriate design method (LRFD or ASD). You can use...
Select the most economic A992 (Fy=50 ksi) W shape to use as a column for the...
Select the most economic A992 (Fy=50 ksi) W shape to use as a column for the following conditions. Axial dead load of 75 kips, axial live load of 75 kips, length of the column is 12 ft, with no intermediate bracing, pinned top and bottom 2, 3. Use table 10.6 to answer the following questions about A36 double angle compression struts, pinned at both ends. A double-angle compression member 8 ft long is composed of two A36 4x3x5/16 steel angles....
Asap 4. Steel members AB and AC have Cross-section with the dimensions shown the rectangular 29.0 X 103 ksi; ơys 50 ksi. a) Determine which member (AC or AB) is a candidate 1.5 in. С 1.5 in. for...
Asap
4. Steel members AB and AC have Cross-section with the dimensions shown the rectangular 29.0 X 103 ksi; ơys 50 ksi. a) Determine which member (AC or AB) is a candidate 1.5 in. С 1.5 in. for buckling: and then determine the maximum load P th e frame can support such that buckling does not 2.5 in occur with respect to the y-axis, nor with respect to the z-axis. Treat the end conditions as pinned at both ends for...
Question2 Determine the LRFD design De Pn for the axially loaded W12 x 96 column which...
Question2 Determine the LRFD design De Pn for the axially loaded W12 x 96 column which has the bracing and end support conditions as shown (the column is braced on its weak y axis as shown in the figure). Fy 50 ksi. Solve: a) Using Trial and error Procedure; i.e. Table 4-22; b) Using LRFD Tables: i.e. Table 4-1. 10 ft 26 ft 16 ft n T x-x axis y-y axis l of 2
Problem 3: (15 points) A W12x65 is pinned at both ends and braced in the weak...
Problem 3: (15 points) A W12x65 is pinned at both ends and braced in the weak axis at the locations shown in the figure below. Use A992 steel for the column and determine the design compressive strength (.P.) using LRFD. Koti- Strong axis Weak axis
Problem 2. Design and select an ASTM A992 (Fy" 50 ksi) W-shape column to carry an axial dead load of 140 kips and live lond of 420 kips. The column is 30 feet long, and is pinned top and bottom in both axes. In addition, the column is laterally braced about the y-y axis (local weak/minor axis of the section) and torsionally braced at the midpoint. Limit the column size to a nominal 14 in. shape, that is W14 shape...
11. (10 points) Check to determine if a W14x159 used as a column can support an axial dead load of 250k and an axial live load of 1000k if the length of the column is 14 feet and the value of G for Joint A has been determined to be 0.8. Use the LRFD Design Method and assume that the columns are bending about their y axis as shown. (Hint: The answer is in the Manual) W14x159 Fixed Base at...
. A W14x120 with Fy-50 ksi is used as a compressive member. Compute the nominal compressive strength, Pn, of this member. Support in strong direction Support in weak direction
. A W14x120 with Fy-50 ksi is used as a compressive member. Compute the nominal compressive strength, Pn, of this member. Support in strong direction Support in weak direction
Use LRFD method
Find the capacity of the column P.. Assume Fy = 50 ksi. Column is braced laterally in all directions at the mid-height. (1) Draw the buckled shape of column. (ii) Find the recommended design K value. (iii) What is the unbraced length of column (iv) Find the capacity of column () Can the column support a loading of DL-300kips, LL=400kips Hint: ºn uses resistance factor . Use the appropriate design method (LRFD or ASD). You can use...
Select the most economic A992 (Fy=50 ksi) W shape to use as a column for the following conditions. Axial dead load of 75 kips, axial live load of 75 kips, length of the column is 12 ft, with no intermediate bracing, pinned top and bottom 2, 3. Use table 10.6 to answer the following questions about A36 double angle compression struts, pinned at both ends. A double-angle compression member 8 ft long is composed of two A36 4x3x5/16 steel angles....
Asap
4. Steel members AB and AC have Cross-section with the dimensions shown the rectangular 29.0 X 103 ksi; ơys 50 ksi. a) Determine which member (AC or AB) is a candidate 1.5 in. С 1.5 in. for buckling: and then determine the maximum load P th e frame can support such that buckling does not 2.5 in occur with respect to the y-axis, nor with respect to the z-axis. Treat the end conditions as pinned at both ends for...
Question2 Determine the LRFD design De Pn for the axially loaded W12 x 96 column which has the bracing and end support conditions as shown (the column is braced on its weak y axis as shown in the figure). Fy 50 ksi. Solve: a) Using Trial and error Procedure; i.e. Table 4-22; b) Using LRFD Tables: i.e. Table 4-1. 10 ft 26 ft 16 ft n T x-x axis y-y axis l of 2
Problem 3: (15 points) A W12x65 is pinned at both ends and braced in the weak axis at the locations shown in the figure below. Use A992 steel for the column and determine the design compressive strength (.P.) using LRFD. Koti- Strong axis Weak axis
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