- Find Out Soil Strengths
- Expose Existing Footings
Category Archives: Site Investigation
Site Investigation & Phase 2 Assessment – Islington, London. N19
Site Investigation & Phase 2 Assessment – Islington, London. N19
Statistical Analysis of Results |
Site Investigation – Bristol
Site Investigation – Bristol
Brick Footings |
Made Ground . . . of Brick |
Ordinarily it would be standard practice to take samples and analyse them for a suite of chemicals as part of a Site Investigation . However, in this instance the checks for the presence of made ground, combined with floor slab sub-ventilation were deemed as an appropriate mitigatory measure.
This saved around £5000 in costs, which on a small project would represent a significant percentage of the overall project value.
Geotechnical Investigation Belluton near Bristol
Geotechnical Investigation Belluton near Bristol
In support of some road stabilisation work SWEL have carried out a geotechnical investigation at Belluton near Bristol.
Despite tight access, drilling works started in a timely fashion, with recovered of some excellent core samples. Holes were advanced to a depth of 15 meters, with dynamic sampling in soils and weathered rocks, and coring in rock proper.
Dynamic Samples from Ground Level in c. 3 Meters Depth |
Core Samples from Weathered Rock Head |
Close Up of Core Fragment |
SPT results and disturbed samples from Soils. |
The investigation is to provide data for a cutting for road widening. The rock seems very competent, but soil nails are proposed for further strengthening. Samples were tested for aggressive ground characteristics, and a variety of classification and strength tests.
Site Investigation Bristol
Acting on instruction from a property owner in Bristol. Southwest Environmental Limited are currently undertaking a Geo-environmental site investigation in Bristol.
The site is an dis-used petrol filling station, there are concrete filled tanks on site, and various buildings with above ground tanks and assicoated storage.
Site Investigation Bristol – Buried Services and Pipework were Present |
Site Investigation Bristol – Site Works were completed in One Day |
The site works were undertaken in December 2015, with reporting no being progressed.
A full report will be prepared to collate finding of investigation and to compare soil quality against various guide values.
Contaminated Land Site Investigation – Epsom and Ewell
I addition to the soil sampling of a car park area, vapour monitoring was also undertaken in the existing building which is ear marked for conversion under the new permitted development rights.
Another riveting photo! |
The samples are currently with the labs on a very quick 3 day turnaround meaning the draft (soils only) report will be issued just two weeks after commissioning.
Geotechnical Investigation Bristol
Geotechnical Investigation Bristol
SWEL were engaed to undertake a geotechnical investigation within an existing reatial unit, structural engineers required ground data so as to construct a mezzanine floor.
There was restrict access on site but with the help of an expert crew from Stunt Drilling Services, 3 rotary boreholes were advanced 10 meters below ground level in to the Sandstones and Coal measures that underlie the site.
Core recovery improved with depth, and rock core logging was used to give empirical rock mass strength estimates.
Below is a video of site works (drilling rig) underway.
Running a drilling rig in a building can cause a build up of fumes and as such an extractor system was used to suck exhaust gas outside the building via lots of ducting.
Site Contamination Asessment Bristol
Acting on instruction from a planning consultant, Southwest Environmental have undertaken a site contamination assessment in St. Philips, Bristol.
The site is currently in use as a builders yard and is ear marked for development.
Site Contamination Assessment Bristol – Work Undertaken
Six exploratory location were chosen and soil samples were taken from the top meter of soil, there was a great thickness of made ground on site, in places extending to the full depth of the exploratory holes.
Bristol has many buried river channels and it became apparent that a buried river channel or culvert runs along the site boundary.
breaking out positions |
There was a considerable thickness of concrete on site, and made ground was hard going composed for the most part of brick, whether whole or in parts.
Geologically Bristol centre is normally river silts over marls.
Sample were sent for testing and results are awaited.