We knew that the main function of the foundation is to transmit the load to the soil from structure either building, bridges, dam, etc.,
So the foundation depth of the structure needs to be designed in such a way that neither the soil does not fail nor settle due to the load carried over it.
To achieve the required depth and strong foundation, we need to study the soil where the construction is going to take place.
So in this post, we are going to discuss the bearing capacity of soil
What is the bearing capacity of Soil?
The maximum capacity of the soil that supports the structural load without any shear failure or settlement is called the bearing capacity of the soil.
The bearing capacity is calculated in load per unit area.
Factors affecting bearing capacity
When soil is imposed by loads such as buildings, bridges, etc, it tends to deform or settle. It greatly depends on the soil properties such as
- Density of soil
- Water Content
- The angle of internal friction
- Shear strength
Methods of Determining Bearing Capacity of Soil
- Presumptive Analysis
- Analytical Methods
- Plate Bearing Test
- Standard Penetration Test
- Modern Testing Methods
- Centrifuge Test
Bearing Capacity Of Different Types Of Soil
|#||SOIL TYPE||CAPACITY kN/m²|
|2||Fine Sand, Loose & Dry||98|
|5||Fine Sand & Silt||245|
|8||Coarse Sand, Compact & Dry||441|
|9||Coarse Sand, Compact & Dry||441|
|11||Residual deposits of Shatters & broken bedrock||883|
|12||Sand Stone, Lime Stone||1618|
|13||Hard rock – Granite,Dionite||3236|
Happy Learning 🙂