PSAD Refresher 33: Design of Column Transverse Reinforcement (Special Provision on Seismic Design)

SITUATION: A column section b = 400 mm, h = 600 mm is reinforced with longitudinal bars Ast = 8-φ25 mm equally distributed along all faces. Lateral ties are composed of 12 mm rectangular hoops with clear cover equal to 40 mm and 12 mm cross ties in both directions. Concrete yield strength f’c = 27 MPa with allowable concrete shear stress, fv = 0.866 MPa, and steel yield strength, fy = 415 MPa.
13. Determine the spacing of 12 mm rectangular hoops, if shear strength of the hoop is 300 kN and shear is parallel to b dimension.
A. 160 mm C. 120 mm
B. 100 mm D. 150 mm
14. Determine the spacing of 12 mm diameter ties to be adopted in accordance with the provisions of seismic design if shear is parallel to h dimension.
A. 75 mm C. 120 mm
B. 100 mm D. 150 mm
15. Determine the spacing of 12 mm diameter ties to be adopted in accordance with the provisions of seismic design if shear is parallel to b dimension.
A. 75 mm C. 120 mm
B. 100 mm D. 150 mm
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[@brianjalata4860]

Galing sir! thank you po . sir request lang sir Sets naman po sa theory of struct sir.

[@harfmiranda]

Salamat sa suggestion!

[@JohnMartinNavales]

Bakit pag ikaw boss na gegets ko. pero siya hindi ko siya maintindihan kung bakit pa rin ako iniwan. huhuhu 😂😂😂

[@harfmiranda]

Baka pag naging engineer kana lods bumalik na siya haha