Column Bases MCQ with answer and solution

Concept

Design checks of grillage foundation

Step-by-step solution

1. A grillage consists of steel beams in one or two tiers embedded in concrete. 2. The beams are checked for bending, shear and web crippling (bearing).

Explanation

In a grillage foundation the steel beams act as cantilevers under the upward soil pressure, so they are checked for bending moment, shear force and web crippling under the column load.

Shortcut

Grillage beams: bending + shear + web crippling.

Common mistake

Choosing only bending.