Chapter 6

6.1 Types of Foundations

Types of foundations for buildings covered in this Section are:

a) Shallow foundations (see 7)

1. Pad or spread and strip foundations (see 7.2),

2. Raft foundations (see 7.4),

3. Ring foundations (see 7.5), and

4. Shell foundations (see 7.6).

b) Deep foundations

1. Pile Foundations

i) Driven cast in-situ concrete piles (see 8),

ii) Bored cast in-situ concrete piles (see 8),

iii) Driven precast concrete piles (see 9),

iv) Precast concrete piles in prebored holes (see 10),

v) Under-reamed concrete piles (see 11),

vi) Timber piles (see 12), and

vii) Spun piles.

NOTE — Spun piles are used in deep marshy soils as conventional pile installation beyond 50 m in such soils is very difficult.

c) Other foundations/substructures/foundations for special structure

1. Pier foundations (see 13.1),

2. Diaphragm walls (see 13.2), and

3. Machine foundations (see 13.2).