Beta Structural Engineers prepare Subsidence Reports for residential, industrial, commercial and public/governments buildings.
Beta qualified structural engineers can provide professional advice on all matters related to cracks in buildings, structure and sub-structure ground movement, subsidence and underpinning. We provide you with a subsidence report to assist you in understanding the cause/s of any cracks you may have noticed in your building. The report would also include recommendations on required immediate action and in some cases the costs and risks associated. The report will also indicate if ground movement is the reason for the cracks and if underpinning is required. We have more than 15 years experience in preparing subsidence and structural condition reports for residential buildings, industrial plants, commercial and office buildings, and public/government buildings.
We usually conduct a desk study followed by a detailed visual inspection. If necessary we may arrange for some testing (e.g. a trial pit or soil tests to establish ground conditions). In other cases we may request measurements to be taken periodically (e.g. crack monitoring to establish seasonal changes). The inspections are followed by a study of the observations and an assessment of their likely causes. We produce a report that includes recommendations for immediate action to ensure the safe use of the building. We also include any required further investigation or any required long term actions to safeguard the building long term future.
Many of the properties that we inspect are built on shallow foundations resting on clay soil. When the soil has high volume change potential, differences in soil moisture content may lead to different pressure under various foundations. If this different pressure is large enough to cause differential settlement, the building starts to develop cracks. Sometimes, this is triggered by a blocked drain, tree roots or even seasonal changes in weather.
We use the industry’s standard BRE (Building Research Establishment) Guide on the Classification of Cracks in Housing. This guide aims to standardize the method of reporting to help insurers, professionals and decision makers use common terms. The Guide classifies all cracks on a scale from 0 (negligible hairline cracks) to 5 (severe cracks up to 25mm wide).
Our track record in assessing subsidence and ground movement in buildings includes some interesting challenges on period properties and low rise industrial buildings.
Homeowner Subsidence Report for a period property in West London for insurance purposes.
Homeowner Subsidence Report and Repair Design for a period property in West London.
Homebuyer Structural Report and Repair Costing for a period property in West London to assist potential buyer understand cause of cracks and cost of repair.
Structural Condition Report for an NHS Surgery in West London to advise asset manager that cracks are negligible and there is no subsidence.