To determine the condition of the ground that you are planning to build on, we offer a comprehensive site investigation service.

house and tree
While Ground Is Stable
There Is Usually
Negligible Movement
subsidence
Ground Changes
E.G. Reduced Moisture Levels
Can Lead To Subsidence
GroundHeave
Ground Heave Often
Occurs When Moisture Levels
In The Ground Increase

What Are Subsidence Or Ground Heave?

Subsidence

Subsidence is the term given to a drop in level of the foundations of a building or ground itself.  This can be catastrophic to buildings on the land with no structure in place to mitigate the effects of this drop.

Heave

Ground heave may be considered to be the opposite of subsidence as it describes an upward  movement of the ground beneath a building’s foundations.  Ground heave is often caused by one or more large trees being felled or dying.  The  subsequent massing of underground water which was previously used by the tree, can cause the soil and foundations above to be pushed upwards.

brick-wall-subsidence-crackHow To Spot Signs Of Ground Movement In Existing Buildings

Generally when the ground moves underneath a house, there are progressively more acute signs of failure the more it has travelled. Walls can crack, doorways warp as can window frames.  Sometimes the movement will eventually cause windows to shatter or fall.

Walls may start to move differentially with sections of brickwork moving apart, commonly splitting along the mortar course.  Sometimes though, bricks or even concrete sections shear.

The cosmetic aspect and structural integrity of a building can be damaged to a considerable degree.  Heavy subsidence or heave can cause a building to be condemned.

Avoid Subsidence & Build The Best Foundations

With a survey of the existing ground and structures, debris or buildings on the site, our engineer will be able to provide you with a detailed and highly focused report.  Your report will contain details of any likely or existing subsidence issues as well as recommendations for any extra building or remedial work required. We take a variety of soil samples to determine the composition of the soil as well as its liquid, plasticity and plastic indices.

This report allows us to form a clearer picture of the lay of the land and more important still, it allows us to work out the best way to ensure that foundations for buildings are specified properly to be durable and take account of the local conditions.

What Happens After The Report?

Once you have digested the report and our recommendations we can work with you to form a cohesive building strategy.  You will be able to build or repair property on the site with the right specification to avoid trouble caused by subsidence or under-specified foundations.

Of course, being piling experts, if new work does require piling, we are well positioned to carry this out for you.

Set LEBC To Work For You

If you’d like to know more about our site investigation services or to book a visit or quotation, please:

contact us online here

call us on: 01676 545 051