Building Construction
In case of Raymond pile

Diameter of pile at bottom varies from 20 cm to 28 cm
Diameter of top of piles varies from 40 cm to 60 cm
Lengths vary from 6 m to 12 m
All listed here

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Building Construction
Grillage foundation

All listed here
Does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth
Is light and economical
Is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity

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Building Construction
Raft foundations are used for:

Counter acting the hydrostatic effect
All listed here
Providing increased area of foundation over poor bearing capacity of soil
Spanning over small soft or loose pockets

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