Subsidence is the sudden, rapid, and sometimes permanent sinking of an area of land. This usually occurs when the ground can no longer support the weight of the buildings or other structures on it. Subsidence can damage buildings and other structures, and it can be dangerous for people if it happens suddenly. There are many causes of subsidence, but the most common is water pressure. When water seeps into the ground, it can cause the soil to expand and become less dense. This can cause the weight of buildings or other structures on the ground to be greater than the ground can support, and the ground will sink. Other causes of subsidence include mining, natural underground cavities, and changes in the level of groundwater. In some cases, subsidence can be caused by human activity, such as when people dig trenches or boreholes into the ground. Subsidence can cause serious damage to buildings. Cracks can appear in walls, floors, and ceilings, and doors and windows may no longer fit properly. In severe cases, subsidence can cause buildings to collapse. Subsidence is a problem that is likely to become more common as our climate changes and we experience more extreme weather conditions. Heavy rainfalls can
What is subsidence?
Subsidence is the downward movement of the ground beneath a building. It can be caused by a number of factors, including:
-The loss or decomposition of organic materials in the soil, such as tree roots or peat.
-The collapse of man-made structures underground, such as tunnels or mines.
-The extraction of groundwater or oil from beneath the ground.
Subsidence can cause problems for buildings above ground, as the weight of the building can cause cracks and damage. In severe cases, subsidence can even cause buildings to collapse.
If you think your property may be affected by subsidence, it’s important to get in touch with a structural engineer or surveyor who can assess the situation and advise on the best course of action.
Causes of subsidence
Subsidence occurs when the ground beneath a building settles or collapses. This can be caused by a number of things, including:
• The natural decomposition of organic materials in the soil, which can cause the ground to compact over time
• The wetting and drying of soils, which can lead to shrinkage and cracking
• The extraction of groundwater or minerals from beneath the ground, which can cause the ground to collapse
• The movement of underground water courses, which can erode support for the ground above
• The failure of man-made structures such as retaining walls or tunnels
How to prevent subsidence
Subsidence is the gradual settling or sinking of a building. This can happen due to a number of reasons, including the natural settling of the foundation over time, or damage to the foundation from things like water leaks or tree roots. Subsidence can also be caused by changes in the ground underneath the foundation, such as when groundwater is removed from an area faster than it can be replenished.
There are several ways to prevent subsidence, including:
1. ensuring that the foundation is properly designed and built
2. ensuring that thefoundation is regularly inspected and maintained
3. repairing any leaks or damage to the foundation promptly
4. avoiding removing groundwater from underneath the foundation faster than it can be replenished
How to repair subsidence damage
Subsidence is the gradual sinking of an object into the ground. This can happen to buildings when the ground underneath them begins to settle or erode. The most common cause of subsidence damage is water. When the ground becomes saturated with water, it expands and puts pressure on the foundation of a building. This can cause the foundation to crack and allow the building to sink into the ground.
There are several ways to repair subsidence damage. The most common method is to inject concrete into the ground around the foundation of the building. This will provide support for the foundation and help prevent further sinking. In some cases, it may also be necessary to underpin the foundation with steel beams or other supports. If the damage is extensive, it may be necessary to demolish the affected part of the building and start from scratch.
Case studies of subsidence
Subsidence is the downward movement of the ground beneath a building. This can happen for a number of reasons, such as when the ground becomes waterlogged and starts to settle, or when trees or shrubs are removed from around the building and their roots no longer support the ground.
There have been a number of high-profile cases of subsidence in recent years, including at Buckingham Palace and Tower Bridge in London. In both cases, extensive remedial work was required to stabilise the buildings and prevent further damage.
If you think your home may be affected by subsidence, it’s important to get expert advice as soon as possible. A structural engineer will be able to carry out an investigation and give you an idea of what needs to be done to fix the problem.
Subsidence is a common problem in buildings, especially older ones. It occurs when the ground beneath the foundations of a building starts to sink, causing the foundation to crack and the walls to start leaning. In some cases, subsidence can be corrected by shoring up the foundation or injecting it with concrete. In other cases, however, the only way to stop subsidence is to demolish the building and start again from scratch.