lfm1001

Excavation and primary lining: Replica Chanel Watches precast concrete segments originally proposed for the primary lining of the shafts were substituted by steel liner plates supplied by American Commercial. Each Replica Rolex Watches deep ring was comprised of 13 no. 8mm thick steel segments that proved to be versatile, small, light and easy to handle during shaft sinking. The headroom in the basement was not sufficient Replica Ulysse Nardin Watches use standard hydraulic jacks nor manoeuvre heavy kentledge to sink the shaft as a caisson; so conventional underpinning was chosen. Prior to commencement, theDiscount Richard Mille underlying the basement slabs were consolidated by injection of polyurethane grouts via lances driven into the ground. Although it was later found that penetration of the polyurethane resin into the dense sandy gravels was limited, both shafts were carefully and successfully sunk in single ring increments using a degree of timber support where necessary to minimise overbreak.