Thursday, 16 August 2018

Flood Risk Assessment - Devon

Flood Risk Assessment - Devon


SWEL have recently completed a Flood Risk Assessment for a Site in Totnes, Devon. Our total turn around time for the production of the report was 7 workings days.

Detailed Flood Depth Data

Usual RoFRS Data but on High Resolution

The report includes in depth flood depth data, which was sourced on a quick turnaround.

The report include surface water details (brief), design details and sequential test. The site use type is not ordinary and we made a best case argument for vulnerability classification in this instance.

SWEL regularly prepare flood risk assessment for sites of all types across the UK. We aim to deliver a quick successful report which include a breadth of information suitable for the job in hand.

If you require a Flood Risk Assessment please Contact Us.


Saturday, 11 August 2018

BRE 365 Soak-Away Tests - Gloucestershire

BRE 365 Soak-Away Tests - Gloucestershire


SWEL were engaged to undertake BRE 365 soak-away testing at a site in Gloucestershire. The works includes site works and a full written report with design calculations and soak-away sizing calculations according to BRE 365. We include trial pit logs, photographs and extra information we feel may be of use, such as empirical strength estimates.

The site was fairly large and very hilly. Which would have made access rather difficult if it were not for pre-existing access tracks, and a disused railway line which serves as a spine road for our investigations!

There were various fallen trees etc. which had to be removed before we could start work, but our site staff normal carry a selection of cutting tools so as to get things moving as quickly as possible.

Access was Tight ion the Wooded Areas - Note Quarry Face to Rear


In the course of a very long day we managed to complete 7 trail holes, with BRE 365 soak-away testing carried out in each one.

Bedrock was quite shallow at some points across the site. The western extents of the site included a quarry and a disused railway tunnel.

Many of the Soak-Away Pits Reveled Large Limestone Cobbles.


Infiltration rates across the site were variable, reflecting the steep topography and disturbed nature of the ground. The valley bottom showed slower soak-age rates whilst the the infilled quarry showed very rapid soak-age rates, likely due to the use of a very course fill media.

The field work element of each test took between 30 mins and 2 hours, which many of the longer tests being run simultaneously.

Our water bowser was towed by an Instructor from the nearby Whitecliff 4x4 Centre, who was as skilled as he was amicable.


Friday, 10 August 2018

Flood Risk Assessment - Bristol

Flood Risk Assessment - Bristol


SWEL were recently commissioned to undertake a flood risk assessment in Bristol. This site is an interesting one in terms of settings. As is resides within some characterful gardens walls, which have a curved to match the site boundary.

A Pub near the Site

The key as always with a good flood risk assessment is collecting a wide selection of data to characterize flood risk at the site. 3rd party data reveled flooding of significant depth on site, whilst the Environment Agency data from neighboring sites showed details that will aid in the design of the building.

The report also includes exceptions test, sequential test and surface water recommendations.