The correct answer is D. All of the above.
A grillage foundation is a type of foundation that is used to support heavily loaded isolated columns. It is made up of two or more layers of steel beams that are placed perpendicular to each other. The beams are then connected by cross-bracing, which helps to distribute the load evenly. Grillage foundations are often used in areas with poor soil conditions, as they provide a more stable base for the column than a traditional footing.
Here is a brief explanation of each option:
- Option A: Grillage foundations are provided for heavily loaded isolated columns. 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube