Correct option is A
In reinforced concrete design, stirrups are used as shear reinforcement in beams to resist shear forces and to hold the main longitudinal reinforcement bars (rebar) in place. The spacing of stirrups is an important design consideration to ensure the beam can effectively resist shear forces and maintain structural integrity.
Minimum Spacing of Stirrups:
The minimum spacing of stirrups is generally governed by code provisions and is determined to ensure that the stirrups effectively provide shear reinforcement and confinement to the concrete.
According to many standard codes, the minimum spacing of stirrups should not be less than 6 cm (60 mm). This spacing ensures that the stirrups are closely spaced enough to resist shear forces effectively and to confine the concrete between the stirrups adequately.
Maximum Spacing Considerations:
The maximum spacing of stirrups is typically based on a percentage of the effective depth of the beam or a fixed maximum limit, whichever is smaller, to prevent shear failure.
