Pre-loading of building sites over compressible strata

Abstract

A method and associated apparatus are given for a better approach to the pre-loading technique currently used to improving otherwise unsatisfactory ground conditions so that a site may be used to support an engineered structure or building. The method allows for pre-loading of a site to proceed where there are preexisting buildings on adjoining properties without causing damage to, or interference with, those properties while at the same time allowing full utilization of the building area. This involves using sections of sheet piling to isolate and contain ground movements in the subject site from having any influence on adjacent land, thus preventing damage to neighboring property. Apparatus to effectively support minimal lengths of sheet piling by means of a novel adjustable anchoring system is given. Apparatus for a novel monitoring system to provide comprehensive data on the progress of ground improvement is also given. Both pieces of apparatus are fully recoverable upon completion of pre-loading and are then reusable for similar future work.

1 . A method involving the use of sheet piling whereby the existing pre-loading technique of ground improvement or treatment can be improved so as to prevent damage to adjacent property and maximize the area of a building site which can be built on without adversely affecting adjacent property. 
   
   
       2 . Apparatus called an anchor assembly which when used in conjunction with sheet piling erected for the temporary containment of fill material can make lateral constraint of the piling more effective by its being adaptable to ground deformations. 
   
   
       3 . An apparatus called a monitoring post which incorporates within itself the means of acquiring all geotechnical information necessary to fully assess the progress of pre-loading, and which can inform the design engineer on demand and without the need for personnel to visit the site.