...F E CAMPION © Thomas Telford and ICE 1951 BRITISH RAILWAYS SOUTHERN REGION RECONSTRUCTION TUNNELS LININGS REPLACEMENT CAST IRON INVERTS FAULTS GEOLOGY CLAYS SILT SAND WADHURST CLAY FAILURES BRICKS PERCOLATION SOFTENING WALLS ERECTION GROUTING BRICKWORK RAILWAYS...

...) Some very large fissures are found, but fissures are generally infrequentexceptnear the mainfaults. In the absence of fissures or cracks water cannot move or percolate. (b) The water in a well becomes perched as soon as its surface sinks below the lowest fissures or cracks with which it communicates...

.... Past experience has provided knowledge of many of the factors necessary for efficiency in a percolating filter and of the various effects of these factors, but even now the reasons for such effects are notalways known. The method of sewage-purification should provide an orderly sequence of balanced...

...R G HETHERINGTON; H T CALVERT; G WATSON; D M WATSON; H JACKSON; L F MOUNTFORT; A PARKER; S H JENKINS; E HALLIWELL © Thomas Telford and ICE 1941 WATER POLLUTION RESEARCH BOARD DESIGN SEWAGE PURIFICATION WORKS PERCOLATION FILTERS ACTIVATED SLUDGE SCREENING DETRITUS TANKS...

...R A BAGNOLD © Thomas Telford and ICE 1940 BEACHES FORMATION WAVES MODELS EXPERIMENTS TANKS WATER MOVEMENT PROFILES BEHAVIOUR EFFECT IMPERVIOUS MATERIALS CREST LATERAL INSTABILITY ENERGY LOSS PERCOLATION SAND SIZE GRADING PARTICLES PEBBLES VARIATIONS TIDES...

... formed proved to offer the path of least resistance for water percolating below the cut-offwall, this water discharging into the galleries in the thrust-block where it was collected and measured over a V-notch just before passing intothe rock-fill through the drainage pipe (Fig. 3, Plate 1). The amount...

...H J F GOURLEY; C HINDLEY; W PEEL; W T HALCROW; H T CREASY; J S WILSON; G M BINNIE; J M B STUART; F C TEMPLE; J R DAVIDSON; J K HUNTER; BD RICHARDS; R C S WALTERS © Thomas Telford and ICE 1939 WATER DAMS PERCOLATION CONCRETE WALLS DIAPHRAGM CURTAIN MALARIA DISEASES EARTHWORKS...

... PLANT GRIDS INTERCONNECTION CONSTRUCTION EXPLOSIVES GELIGNITE EXCAVATING DAMS FOUNDATIONS GROUTING BONDS COMPENSATION RIVERS WATER POWER STEEL PIPELINES POWER STATIONS GENERATING PEAK LOADS ELECTRICITY CONCRETE PRODUCTION GRADATION AGGREGATES CONTROL TURBINES PERCOLATION...