One-half lever arm of the section
One-third lever arm of the section
beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of A. One-half lever arm of the section B. One-third lever arm of the section C. Lever arm of the section
One and half lever arm of the section
Answer is Right!
Answer is Wrong!
The correct answer is: A. One-half lever arm of the section.
The lever arm is the distance from the neutral axis to the outermost fiber of the beam. The nominal reinforcement is provided at a pitch of one-half the lever arm of the section to ensure that the shear stress is less than 5 kg/cm2.
The other options are incorrect because they do not provide the required shear reinforcement.
- Option B: One-third lever arm of the section. This option would not provide enough shear reinforcement and the shear stress would exceed 5 kg/cm2.
- Option C: Lever arm of the section. This option would provide too much shear reinforcement and the beam would be unnecessarily heavy.
- Option D: One and half lever arm of the section. This option would provide too much shear reinforcement and the beam would be unnecessarily heavy.
Therefore, the correct answer is A. One-half lever arm of the section.