Soil

Versmannkai East, site clearance BF 102-110

Project details

Period:2016 - 2018
Field of activity:Explosive ordnance clearance
Scope of services:Consultancy services, planning services, tendering, participation in award of contract, construction supervision
Short description:Versmannkai Ost is located in the Elbbrücken neighbourhood of HafenCity. The construction sites 102, 105, 108 and 110 were located in an as yet uninvestigated area of a former waterfront. The aim of the work was to check the as yet unprobed construction sites with suspected unexploded bombs down to a depth of -9.5 m above sea level (-15 m below ground level) by means of borehole probing and to achieve clearance. The sheet piling was only partially removed. The soundings were carried out using a three-axis magnetometer, supplemented by an active method (in this case 4R-EM) and borehole georadar in order to minimise the civil engineering work required for the salvage. Salvage at greater depths was carried out using large borehole drilling and divers, and the terrain was adjusted by filling in the excavation pits and modelling to contractually agreed transfer heights.

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