What is the maximum size of coarse aggregate in relation to the member's cross-section?

The maximum size of coarse aggregate in relation to the member's cross-section is appropriately defined as 1/3 of the minimum cross-section of the member. This guideline is crucial for ensuring that the concrete can flow properly and achieve desired density and strength.

When the aggregate size exceeds this limit, it can lead to issues such as poor workability, increased risk of segregation, and difficulty in achieving uniform distribution of materials throughout the mix. By maintaining the specified size limit relative to the minimum cross-section, the concrete can effectively fill the mold, reduce void spaces, and enhance the overall performance of the concrete structure.

The stipulation of 1/3 allows for sufficient space for the aggregate to be evenly distributed throughout the mix while still allowing for the inclusion of smaller particles that contribute to the overall strength and durability of the concrete. This balance is pivotal to achieving a well-performing concrete member, especially in structural applications where load-bearing capabilities are critical.