Homework Answers
By putting the values of E in
Mpa and other parameters from the manual of steel parameters we can
calculate the critical load P before buckling .
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Problem 3 (25 pts.) A W10x49 section of A992, Grade 50 steel, is used as a...
Problem 1 (25 pts.) A steel column has a total unbraced height of 12 ft and...
Problem 1 (25 pts.) A steel column has a total unbraced height of 12 ft and carries an axial ASD load of 120 kips. The column ends are pinned. Select an economical HSS 9x9 for this column and provide its weight in lb/ft.
Problem 2 (25 pts.) A steel column has a total unbraced height of 20 ft and...
Problem 2 (25 pts.) A steel column has a total unbraced height of 20 ft and carries an axial LRFD load of 500 kips. The column ends are fixed. Select an economical HSS 8x8 for this column.
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...
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...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992 steel W-shape for the beam shown below using LRFD. Only consider design (neglect shear a bracing situations: a. Continuous lateral support of the compression flange b. Lateral support at beam ends and at the point of the concentrated load c. Lateral support only at beam ends PD = 10k PL-20k WD-3.33 k/ft w, = 6.67 k/ft 10' 20' 30'
2. Verify that a built-up ASTM A572 Grade 50 (Fy - 345 MPa) column with PL...
2. Verify that a built-up ASTM A572 Grade 50 (Fy - 345 MPa) column with PL 205 x 25 mm flanges and PL 380 * 6 mn web is sufficient to carry a dead load of 300 kN and live load of 900 KN in axial compression. The column, having an unbraced length of 8 meters, is braced at the midpoint about the weak axts, the ends are pinned in both axes. (Use ASD, 15 pts)
The 12 × 50 is made of A992 steel and is used as a column that...
The 12 × 50 is made of A992 steel and is used as a column that has a length of 23 ft. Its ends are assumed pin supported and it is subjected to an axial load of 142 kip. Iy 56.3 in and E 29(103) ksi. Part A Determine the factor of safety with respect to buckling Express your answer to three significant figures. vec
A W14 × 74 of A992 steel, 16 feet long, is used as a column in an unbraced frame.
A W14 × 74 of A992 steel, 16 feet long, is used as a column in an unbraced frame. The axial load and end moments obtained from a first-order analysis of the gravity loads (dead load and live load) are shown in Figure P6.7-2a. The frame is symmetric, and the gravity loads are symmetrically placed. Figure P6.7-2b shows the wind load effects obtained from a first-order analysis. All loads and moments are based on service loads, and all bend-ing moments...
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....
The 5.5 in concrete slab (150 pcf density) is to be supported by W12X30 A992, Grade 50 simply supported steel beams spac...
The 5.5 in concrete slab (150 pcf density) is to be supported by W12X30 A992, Grade 50 simply supported steel beams spaced at 8ft c/c. The slab is spanning 20ft. The live load is 100psf. Using the LRFD and ASD procedures, check the adequacy of the beam if:(3) The beam upper flange is fully supported by the slab (4) The beam lateral bracing at the ends only (Cb=1.0) Determine the beam shear capacity and check the beam deflection for a...
Problem 1 (25 pts.) A steel column has a total unbraced height of 12 ft and carries an axial ASD load of 120 kips. The column ends are pinned. Select an economical HSS 9x9 for this column and provide its weight in lb/ft.
Problem 2 (25 pts.) A steel column has a total unbraced height of 20 ft and carries an axial LRFD load of 500 kips. The column ends are fixed. Select an economical HSS 8x8 for this column.
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...
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...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992 steel W-shape for the beam shown below using LRFD. Only consider design (neglect shear a bracing situations: a. Continuous lateral support of the compression flange b. Lateral support at beam ends and at the point of the concentrated load c. Lateral support only at beam ends PD = 10k PL-20k WD-3.33 k/ft w, = 6.67 k/ft 10' 20' 30'
2. Verify that a built-up ASTM A572 Grade 50 (Fy - 345 MPa) column with PL 205 x 25 mm flanges and PL 380 * 6 mn web is sufficient to carry a dead load of 300 kN and live load of 900 KN in axial compression. The column, having an unbraced length of 8 meters, is braced at the midpoint about the weak axts, the ends are pinned in both axes. (Use ASD, 15 pts)
The 12 × 50 is made of A992 steel and is used as a column that has a length of 23 ft. Its ends are assumed pin supported and it is subjected to an axial load of 142 kip. Iy 56.3 in and E 29(103) ksi. Part A Determine the factor of safety with respect to buckling Express your answer to three significant figures. vec
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....
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