By D Burford. This paper was first published in GE’s September 1991 issue.
Summary
A 10ha area of restored opencast fill has been preloaded prior to the construction of a housing estate. The 24m deep backfill was temporarily preloaded with a 50m square by 7m high surcharge of earthfill to improve its load carrying characteristics. Some 300mm of surface settlement occurred, the amount of settlement decreasing with depth of 611; at 10m below ground level only 10mm of settlement was recorded. Most of the settlement occurred during placement of the surcharge. Because creep settlement was very small, it became unnecessary to leave the surcharge in place for more than one month. The surcharge was moved progressively around the site, and, as it was removed, a small amount of heave of the surface of the surcharged backfill took place. Plate loading tests after surcharging showed immediate settlements of no greater than 7mm at loads of 80kN/m .
You might also like...
Survey launched for 2018 Geotechnical Services File
Data gathering for the 2018 Geotechnical Services File (GSF) will start this week and GE is calling on industry-wide participation in this free survey to ensure results are representative.
Rankine Lecture reveals the power of 3D modelling
Arup director Nick O’Riordan demonstrated the power of finite element modelling to understand and explain complex geotechnical challenges during delivery of his Rankine Lecture last night.
Mott MacDonald’s Joe Newhouse wins the 2018 Cooling Prize
Presentation of a paper on Ground Movement due to Shaft Construction helped Mott MacDonald geotechnical engineer Joe Newhouse win the coveted 49 th Cooling Prize at an event in Manchester last night.
Soil-structure focus for Rankine events
Delivery of the British Geotechnical Association’s 58 th Rankine Lecture by Arup’s Nick O’Riordan in March will be preceded by a free half day seminar
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. Links may be included in your comments but HTML is not permitted.