... necessitating much pumping from the interior of the cofferdam. Removal of Subaqueous Rock.-It was first necessary to prepare a temporary channel in which to divert vessels whilst the workwas being carried out, and to prepare berths to accommodate the monoliths. This was accomplished by a grab-dredger...

... for the pumping-chamber and roundhead wasgoing forward, protected by a temporary steel sheet-pile dam built on the edge of the navigation water. The temporary cofferdam, whichwas the first part of the work to be put in hand, was constructed of Universal steel sheet piling of 15-inch by 5-inch section, driven well...

...H A SIEVEKING © Thomas Telford and ICE 1931 HYDRAULIC ACCUMULATORS STATIONS CONDITIONS USE PUMPING WATER PUMPING STATIONS RESERVOIRS PLANT PUMPS MACHINERY FRICTION TURBINES EFFICIENCY PIPELINES COUPLINGS CONTROL STORAGE BASINS APPLICATIONS UK SELECTED...

...BULLMORE; A W E WATERWORKS SINKING BOREHOLES WELLS WATER SUPPLY TOWNS PUMPING PLANT PUMPS LETCHWORTH UK © Thomas Telford and ICE 1929 SELECTED ENGINEERING PAPERS, BEING ORIGINALCOMMUNICATIONORSDERED BY THE COUNCIL TO BE PUBLISHED WITHOUT DISCUSSION. No. 77...

... into this area, witould last through- outthe seasonT.heevaporation-recordhs,owever, wemreis- leading. Pumping the outer lakeacross takesabout 6 weeks, and evaporation is so rapid that the level in this main reservoir is little raised, rarelyexceedingR.L.1181on cessat,ion of pumping. That is immaterial so long...