Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Whitby test series


FOUNDATION AND Exploration Services recently carried out a site investigation for the redevelopment of Whitby's wastewater system.

FES, working for Yorkshire Water Services and consultant Earth Tech, put down 62 land and marine boreholes, 14 trial pits and carried out cone penetration testing for the scheme, which involves construction of tunnels beneath the harbour, pumping stations, a treatment works and associated sewers.

Boreholes were sunk to depths of between 5m and 30m using cable percussion and rotary techniques.A total of 17 boreholes were drilled in the harbour; 10 from a jack-up platform and seven from scaffold platforms. Insitu measurements, including SPTs, permeability, resistivity and CBR tests, were also carried out and groundwater samples collected.

Soil and water samples were taken to FES' laboratories in Consett and Basingstoke where they underwent a variety of tests including undrained triaxial compression, CBR, compaction and shear box, ring shear, resistivity, compressive strength and point load. Samples were also tested for a range of contaminants.

Gas monitoring standpipes were installed in five of the boreholes and concentrations of H 2S, CO 2and O 2were monitored at regular intervals.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.