Four Hole Large Base – Structural Foundation Overview

The Four-Hole Large Base is designed to provide stable and reliable support for various structural and industrial installations. Depending on the material, load characteristics, and engineering requirements, foundations can be classified into rigid foundations and flexible foundations. From a structural perspective, several commonly used foundation types include strip foundations, independent foundations, raft foundations, box foundations, and pile foundations. The following provides a professional overview of these foundation structures.

1. Strip Foundation (Bar Foundation)

A strip foundation is used when the superstructure relies on load-bearing walls. The foundation extends continuously along the wall, forming a long, strip-shaped support base.
Applications: masonry structures, small to medium buildings, wall-supported loads.

2. Independent Foundation (Isolated Foundation / Column Foundation)

When the building adopts a frame structure or a single-story rack system, loads are concentrated on columns. In such cases, square or rectangular independent foundations are used under each column to evenly distribute the load.
Features: simple construction, high adaptability, suitable for column-supported systems.

3. Raft Foundation (Mat Foundation)

A raft or mat foundation is used when:

• building loads are high, and

• the soil bearing capacity is low.

Instead of separate strip or isolated foundations, all walls and columns are connected into one large reinforced slab. The load is distributed across the entire slab like a raft.
Advantages: reduces differential settlement, ideal for soft soil conditions.

4. Box Foundation

When a raft foundation requires greater depth, it transitions into a box foundation.
This integral structure consists of:

• reinforced concrete slabs,

• top plates,

• longitudinal and transverse partition walls.

Benefits: excellent stiffness, strong resistance to uplift pressure, ideal for deep-buried structures.

5. Pile Foundation

A pile foundation consists of structural piles driven into the soil and a bearing platform (pile cap) connected to the pile heads.
Depending on whether the platform bottom contacts the soil, the system may be a:

• Low-platform pile foundation (platform touches the soil), or

• High-platform pile foundation (platform elevated above ground).

Use cases: weak soil layers, high-rise buildings, heavy structures.

Integrated With Four Hole Large Base Applications

The above foundation types form the structural principles behind industrial bases like our Four-Hole Heavy-Duty Large Base, commonly used in:

• seismic support systems

• cable tray support structures

• mechanical equipment installation

• pipe and HVAC support systems

• laboratory and industrial mounting platforms