👉Geotechnical Engineering — Soil Bearing Capacity (Concept)

🌟Before constructing any building, we must check if the soil can safely support the load. This is called soil bearing capacity. If we overload the soil, it may fail by settlement or shear collapse.

* Ultimate bearing capacity: the maximum load the soil can handle before failure.
* Allowable bearing capacity: the safe load limit used for design after applying a safety factor.

🚥Factors affecting soil bearing capacity include:

* Type of soil (clay, sand, rock)
* Depth of the foundation
* Groundwater level
* Natural weight of the soil

🗂In Ethiopia, soils like expansive clays are common, especially around Addis Ababa. These can cause large settlements if not treated properly.

☄To improve poor soils, engineers may:

* Compact the soil to make it denser
* Replace weak soil layers with stronger materials
* Use deep foundations like piles or caissons

🔆Before designing any foundation, a proper site investigation is always done. This may involve:

* Borehole drilling
* Standard Penetration Test (SPT)
* Cone Penetration Test (CPT)

🤌Good foundation design always starts with a proper understanding of the ground.

@etconp