Q1: If L is the effective span of a R.C.C. beam which is subjected to maximum shear q_max at the ends, the distance from either end over which stirrups for the shear, are provided, is

ANS:C -

To determine the distance from either end over which stirrups for shear reinforcement are provided in a reinforced concrete (R.C.C.) beam subjected to maximum shear �maxqmax​, we need to consider the distribution of shear forces along the span of the beam. Stirrups are typically provided in the regions of the beam where shear is significant to enhance its resistance against shear failure. The distance from either end over which stirrups are provided depends on the critical shear region, which is typically located near the supports where the shear is the highest. The distance from either end over which stirrups are provided can be determined based on engineering judgment, structural analysis, and design codes. It is common practice to provide stirrups over a certain distance from each support, extending into the critical shear region. Design codes such as ACI 318 or relevant national standards provide guidelines for the spacing and detailing of shear reinforcement in R.C.C. beams based on structural analysis and design considerations. These guidelines consider factors such as the magnitude of shear force, beam geometry, and material properties. In practical design, the distance from either end over which stirrups are provided is typically determined based on the critical shear region and the spacing requirements specified by design codes. This distance may vary depending on the specific design parameters and loading conditions of the beam. It is crucial to follow the guidelines provided by applicable design standards to ensure the structural integrity and safety of the reinforced concrete beam.