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Use the interaction diagrams found in Appendix A of the textbook to determine whether the following rectangular tied column with bars in 4 faces can safely support a load of Pu = 364 kip and Mu = 788.7 kip-ft.b = 28 in.h = 26 in.fc’ = 4 ksify = 60 ksiγ = 0.75ρg = 0.03

Use the interaction diagrams found in Appendix A of the textbook to determine whether the following rectangular tied column with bars in 4 faces can safely support a load of Pu = 648 kip and Mu = 151.2 kip-ft.b = 18 in.h = 12 in.fc’ = 4 ksify = 60 ksiγ = 0.75ρg = 0.01

A wall footing has the following conditions. Determine the critical bending moment, Mu, at the face of the wall. Assume the footing is 5 ft wide and the pressure that acts on the bottom of the footing is 5,840 psf.The bottom of the footing is at a depth of 4 ft below grade.The service dead load is 15 kips/ft, and the service live load is 7 kips/ft.The wall is 10 in. thick.The footing is 16 in. thick.The allowable soil pressure, qa, is 5,300 psf.The soil has a density of 110 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,000 psi and fy = 60,000 psi.

Determine the maximum axial strength φPn,max for the following tied column.Column width, b = 24 in.Column thickness, h = 18 in.Number of longitudinal bars = 8Size of longitudinal bars = No. 6Size of ties = No. 3Concrete strength = 7,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 60,000 psi

Determine the maximum pitch, s, for the spirals in the following circular column.Column diameter, h = 24 in.Clear cover to spirals = 1.5 in.Number of longitudinal bars = 15Size of longitudinal bars = No. 10Size of spiral = No. 3Concrete strength = 5,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of spiral = 60,000 psi

Determine the maximum pitch, s, for the spirals in the following circular column.Column diameter, h = 18 in.Clear cover to spirals = 1.5 in.Number of longitudinal bars = 9Size of longitudinal bars = No. 9Size of spiral = No. 4Concrete strength = 6,500 psiYield strength of longitudinal bars = 60,000 psiYield strength of spiral = 60,000 psi

Determine the maximum axial strength φPn,max for the following circular spiral column.Column diameter, h = 18 in.Number of longitudinal bars = 16Size of longitudinal bars = No. 8Size of spirals = No. 4Concrete strength = 7,500 psiYield strength of longitudinal bars = 60,000 psiYield strength of spirals = 60,000 psi

Determine the maximum axial strength φPn,max for the following circular spiral column.Column diameter, h = 20 in.Number of longitudinal bars = 9Size of longitudinal bars = No. 6Size of spirals = No. 4Concrete strength = 8,500 psiYield strength of longitudinal bars = 60,000 psiYield strength of spirals = 60,000 psi

Use the interaction diagrams found in Appendix A of the textbook to determine whether the following rectangular tied column with bars in 2 faces can safely support a load of Pu = 336 kip and Mu = 336.0 kip-ft.b = 28 in.h = 12 in.fc’ = 4 ksify = 60 ksiγ = 0.6ρg = 0.05

Determine the required splice length for the galvanized longitudinal bars in the following tied column made of lightweight concrete. Assume that some of the longitudinal bars are in tension and that the connection should be designed as a Class B contact lap splice. Use ACI 318-14 Table 25.4.2.2 to calculate the development length, and assume that the ties satisfy the Code minimum.Column width, b = 28 in.Column thickness, h = 24 in.Clear cover to ties = 1.5 in.Number of longitudinal bars = 8Size of longitudinal bars = No. 10Size of ties = No. 3Concrete strength = 7,500 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 40,000 psi