Is landslip the same as subsidence?

Subsidence – the gradual caving in or sinking of an area of land. Heave – a sideways displacement of an area of land. Landslip – a small movement of soil and rocks down a slope. Settlement – the vertical movement of the ground, generally caused be changes in stresses within the earth.

What is subsidence and inversion of temperature?

A subsidence inversion develops when a widespread layer of air descends. The layer is compressed and heated by the resulting increase in atmospheric pressure, and, as a result, the lapse rate of temperature is reduced.

What is subsidence heave and landslip?

Heave and landslip are similar to subsidence: Heave occurs when your property moves upwards rather than downwards. It is usually caused when the ground beneath your home becomes waterlogged. Landslip is when the land under or around your property moves or slips sideways through erosion, falling or being on a slope.

How does a surveyor check for subsidence?

A specialist will come to your property to carry out an investigation into the existence and extent of subsidence. This will begin with a visual inspection to look at cracks in the walls, sticking doors and windows and other obvious signs of subsidence.

Where can I get subsidence and landslip cover?

Full subsidence and landslip cover provides comprehensive cover for the whole property and is available from most insurers; however it is always subject to certain terms, conditions and the payment of an additional premium.

When does subsidence, heave and landslip occur?

Landslip occurs where a natural or man-made slope fails under the action of gravity due to either a pre-existing deficiency and/or a contributing factor. It should be noted that not all cracking is due to subsidence, heave and/or landslip.

When does a subsidence inversion occur what happens?

A subsidence inversion develops when a widespread layer of air descends. The layer is compressed and heated by the resulting increase in atmospheric pressure, and, as a result, the lapse rate of temperature is reduced. If the air mass sinks low enough, the air at higher…

How are landslips, subsidence and rockfalls used in planning?

Landslips, subsidences & rockfalls pose a significant hazard and risk to development / persons in areas subject to such hazard; as such, where planning authorities have an Environmental Planning Instrument with associated “hazard map”, this map & the associated “risk assessment” is used to assist in the evaluation of a particular development.