A short reinforced concrete column with 10M ties is subjected to biaxial bending: Mz = 460 kN-m, Mi = 290 kN-m, and P = 3500 kN. Using the interaction diagram provided and the reciprocal load method, determine appropriate column dimensions and design its vertical reinforcement. Provide a sketch of the reinforcement layout. Note: DO NOT iterate your final design. Simply state how you would modify your design if the initial design is not satisfactory. [35%]
Table 7.10.7 Rectangular Columns with Equal Numbers of Bars on all Faces
Pt = 696, k = 1717
Pt = 596, k = 1499
Y = 0.80
Pt = 496, k = 1282
f2 = 30 MPa
Pt = 396, k = 1064
Pt = 296, k = 846
Pt = 196, k = 623
Jslfy = 1.0
10 Ells kbh/(1+Bal Elzo 822 bh/(1+83) fy = 400 MPa 0.85 0.65
MJ(Agh), MPa
Design and sketch the reinforcement layout for the plastic hinge region of the ductile shear wall shown below. The factored load effects on the wall accounting for torsion as well as all overstrength and inelastic effects. Include an axial force of 4,000 kN, design shear force of 3,000 kN, and bending moment of 30,000 kN-m. Assume that ductility and stability requirements are satisfied. Clearly state any additional assumptions needed to solve this problem. [35%]
400 mm
650 mm
650 mm
6500 mm
650 mm
CVG4I45
Final Examination
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