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Use LRFD method
Find the capacity of the column P.. Assume Fy = 50 ksi. Column...
Find the capacity of the column Pr. Assume Fy = 50 ksi. Column is braced laterally...
Find the capacity of the column Pr. Assume Fy = 50 ksi. Column is braced laterally in all directions at the mid-height. (0) 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 (W) Can the column support a loading of DL-300kips, LL-400kips Hint: Pn uses resistance factor . Use the appropriate design method (LRFD or ASD). You can use the design tables...
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...
A W10x60 column with the end conditions and bracing is shown in the figure. Determine the least t...
Ag
= 17.7 in^2
rx = 4.39 in
ry = 2.57 in
A W10x60 column with the end conditions and bracing is shown in the figure. Determine the least theoretical bracing (maximum unbraced length) and its location about the y-axis, in order that the y- axis to not control the strength of the column. Also determine the design compressive strength (LRFD) and allowable compressive strength (ASD) for these end conditions (and effective lengths). Use Fy 50 ksi. Also, use the...
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
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...
Find the lightest W12 Section to support the service compression loads listed below. The column is...
Find the lightest W12 Section to support the service compression
loads listed below. The column is 30 ft long with the end
connections as shown. The column is braced at mid-height but only
in the strong axis. Steel is ASTM A572 Grade 50. Use the ASD method
only.
oku W2! IMIDTH SUPPORT CONDITION LOADS I DEAD = 1 2look TT LIVE = 1564
Q1) In the following Beam-column W12x96 should be checked for adequacy. Assume amplified moment factor from P-A are :B1-1.2 and B2-o (Use LRFD Method) F-9 Kips DL, 16.5 kips LL q-2 k/ft DL, 3.12k...
Q1) In the following Beam-column W12x96 should be checked for adequacy. Assume amplified moment factor from P-A are :B1-1.2 and B2-o (Use LRFD Method) F-9 Kips DL, 16.5 kips LL q-2 k/ft DL, 3.12k/ft L ← P25kips DL, 203.7 kips LL 8 8'
Q1) In the following Beam-column W12x96 should be checked for adequacy. Assume amplified moment factor from P-A are :B1-1.2 and B2-o (Use LRFD Method) F-9 Kips DL, 16.5 kips LL q-2 k/ft DL, 3.12k/ft L ← P25kips...
Find the maximum design axial load strength for the tied column of cross section shown in Figure 1.1. Check the ties. Assume a short column. Use f’c = 4000 psi and fy = 60,000 psi for both longitudina...
Find the maximum design axial load strength for the tied column
of cross section shown in Figure 1.1. Check the ties. Assume a
short column. Use f’c = 4000 psi and fy = 60,000 psi for both
longitudinal steel and ties. Also, draw the flexural and shear
reinforcement on a sketch.
Case 1: Design of Short Columns- Small Eccentricity Find the maximum design axial load strength for the tied column of cross section shown in Figure 1.1. Check the ties....
Find the capacity of the column Pr. Assume Fy = 50 ksi. Column is braced laterally in all directions at the mid-height. (0) 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 (W) Can the column support a loading of DL-300kips, LL-400kips Hint: Pn uses resistance factor . Use the appropriate design method (LRFD or ASD). You can use the design tables...
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...
Ag
= 17.7 in^2
rx = 4.39 in
ry = 2.57 in
A W10x60 column with the end conditions and bracing is shown in the figure. Determine the least theoretical bracing (maximum unbraced length) and its location about the y-axis, in order that the y- axis to not control the strength of the column. Also determine the design compressive strength (LRFD) and allowable compressive strength (ASD) for these end conditions (and effective lengths). Use Fy 50 ksi. Also, use the...
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
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...
Find the lightest W12 Section to support the service compression
loads listed below. The column is 30 ft long with the end
connections as shown. The column is braced at mid-height but only
in the strong axis. Steel is ASTM A572 Grade 50. Use the ASD method
only.
oku W2! IMIDTH SUPPORT CONDITION LOADS I DEAD = 1 2look TT LIVE = 1564
Q1) In the following Beam-column W12x96 should be checked for adequacy. Assume amplified moment factor from P-A are :B1-1.2 and B2-o (Use LRFD Method) F-9 Kips DL, 16.5 kips LL q-2 k/ft DL, 3.12k/ft L ← P25kips DL, 203.7 kips LL 8 8'
Q1) In the following Beam-column W12x96 should be checked for adequacy. Assume amplified moment factor from P-A are :B1-1.2 and B2-o (Use LRFD Method) F-9 Kips DL, 16.5 kips LL q-2 k/ft DL, 3.12k/ft L ← P25kips...
Find the maximum design axial load strength for the tied column
of cross section shown in Figure 1.1. Check the ties. Assume a
short column. Use f’c = 4000 psi and fy = 60,000 psi for both
longitudinal steel and ties. Also, draw the flexural and shear
reinforcement on a sketch.
Case 1: Design of Short Columns- Small Eccentricity Find the maximum design axial load strength for the tied column of cross section shown in Figure 1.1. Check the ties....
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