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STABILISING & LIFTING - The URETEK Method

EVALUATION CRITERIA

CAUSE OF THE PROBLEM

Before correction, it is important that the cause of the problem be investigated and, if necessary - and possible, remedied.

URETEK sales engineers, familiar with many Causes of Subsidence, liaise with the client and/or his engineer, to establish the cause and ensure URETEK is a viable solution.

Floor slabs and pavements are usually relatively straightforward. In the case of entire buildings, a geotechnical report is occasionally requested.

EXTENT OF THE PROBLEM

The degree of any settlement is surveyed and recorded. Client's needs are determined, as it is not always necessary to raise back to original levels.

Sound attenuation can be used to locate possible voids, followed by endoscopic inspection. On larger projects (predominantly highways), 'Hyperoptics' or ground penetrating radar may be employed.

Some situations requiring special consideration, include the presence of:
connected piers;
reactive clays;
tree roots.

In other cases, where the cause is at depth, and ground compaction may be necessary for a lasting result, URETEK Deep-Injection can be recommended.

SCOPE OF WORKS

Based on the above determinations, the URETEK scope-of-works is defined, along with any responsibilities of the client or others.

Having established the clients needs, the works are programmed for a suitable time. In commercial situations, or on highways, work can be carried out overnight but this is generally unnecessary as the intrusion of URETEK operations is minimal.

If URETEK is judged not to be the right solution, experienced URETEK engineers can often suggest an alternative.

COST OF CORRECTION

With the above information, it is possible to estimate the amount of time and material likely to be required to complete the works.

As the ground will only accept such material as is able to expand to fill any voids and compact inadequate strata, before lifting occurs, minimal material usage on site is assured and costs controlled.

URETEK SUBMISSION

Statements in relation to all of the above, along with any responsibilities of the client or others, are set out in a written submission to the client.

Recommendations as to future action, such as properly maintained joint sealants and improved surface water management are often included.

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