What is the Limiting serviceability deflections in Structural members like Beams and Slabs as per BS: 8110?

What is the effective depth d

What is the Limiting serviceability deflections in Structural members like Beams and Slabs as per BS: 8110?

To prevent noticeable sag in the structural members, serviceability deflections shall be restricted to L/250. Where L is the span of the member or Length in case of cantilevers (BS8110-2:1985).

 

What is the effective depth d

What is the effective depth d