Wareham Road

Structural Report: External Inspection

Specific Structural Inspection Report on External Cracking to The Existing Chimney at Ground Floor

The structural inspection report has been prepared on the instructions of Gemma Bell our client. We have been requested by our client to carry out an external inspection of the existing chimney with a view to inspecting some cracking and dislodged brickwork to the base of the chimney. The visual survey was undertaken on the morning of the 12th of June 2020 The inspection took place externally and the weather was warm and overcast.

An intrusive investigation was carried out in the form of a small trial hole. The following other limitations in respect of this report should also be noted: The inspection was carried out externally at ground level. The inspection was of a purely visual nature.

Services within and to the property have not been inspected. In accordance with our standard practice we must point out that this report is based upon our inspection of the premises and any other information made available to us, both written and oral, which we have assumed to be correct.

This report is intended primarily for information and is to be read in conjunction with any other specialist reports and investigations. The report is for the benefit of Gemma Bell our client. Structural Engineering Services cannot accept any liability to any third party for the whole or part of its content.

Existing Front Elevation

Project Details:

Structural Letter Report: Site Inspection 

Completion Date: June 2020

Building Type: Residential

Project Type: Structural Report

Location: Wareham Road, Reading

Structural Engineer: John Murphy

Brief Description of The Existing Property

The existing building is a two-story detached property located in Winkfield Row, . The existing property is constructed with masonry facades with the 1st floor formed in timber joists we assume supported off the internal central masonry load bearing wall as would be the roof structure. The roof is a pitched timber roof covered with clay tiles and the internal walls are a combination of timber and masonry stud partition walls. The surrounding properties are of a similar age and construction

Observation Recorded

There is cracking and dislodged brickwork to the base of the chimney breast with some bricks loose and easy to move by hand. These cracks currently are up to 10.0mm in width and the wall has also moved outwards at its base. There are two manholes located one to the front of the property and one to the rear and the drain run runs parallel with the flank wall to the house where the chimney is located. There are no major trees within close proximity to the property.

Conclusion

Conclusion:

Based upon the British Geological Survey Maps the superficial deposits indicate Alluvium which is made up of clay, silt, sand and gravel with bedrock geology indicating the Bagshot Formation which is sand. A trial hole was dug to the corner of the chimney and wall and this indicated that the chimney appeared to be built off paving slabs and there was no foundation below this. (Refer to picture 5). The close proximity of the drain run is also a concern as there may be issues with this and there is an indication that the external ground has lifted around the manhole covers and drain run.

Recommendations:

  • We would suggest the following investigations/works are carried out:
    • A full CCTV survey report is carried out on all the local drainage to assess for any damage or leaks. If damage or leaks are found, they will need to be repaired as per the drainage report.
    • The trial hole dug indicates there is no discernable foundation so localized underpinning will be required to stablilise the chimney. This can be carried out externally with minimal disruption to the existing property.
  • Once the underpinning has been completed, we would suggest the following remedial works be carried out on the damage to the property:
    • Localized rebuilding works to the base of the chimney to reinstate the damaged and loose brickwork. It may be feasible at this stage to try to realign the brickwork where it has moved previously and this may involve some
      temporary propping to facilitate this.

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