Journal . Fig. 13. Reinforced Concrete Facing to Earth Dam. In the first place, the groynes on the east coast were built750 ft. long, and 1,500 ft. apart ; but it has been found necessaryin some cases to build intermediate groynes. As was to be expected in a scheme of this magnitude, somemodifications have been found necessary from time to time. Inthe first place, the author considered it advisable to build trainingwalls on each side of the drainage outlet; but experience hasshown that in some places one wall built on the leeward side issufficient to prevent the drainage water flowing diagonal
Journal . Fig. 13. Reinforced Concrete Facing to Earth Dam. In the first place, the groynes on the east coast were built750 ft. long, and 1,500 ft. apart ; but it has been found necessaryin some cases to build intermediate groynes. As was to be expected in a scheme of this magnitude, somemodifications have been found necessary from time to time. Inthe first place, the author considered it advisable to build trainingwalls on each side of the drainage outlet; but experience hasshown that in some places one wall built on the leeward side issufficient to prevent the drainage water flowing diagonallv a<and damaging the foreshore. 192 WINNING OF TIDAL LANDS IN BRITISH O WINNING OF TIDAL LANDS IN BRITISH GUIANA. 193 On the Clonbrook, Lusignan and other sections of the coast,the groynes have built up the foreshore at a rapid rate. In frontof the new Lusignan sea-wall the foreshore has built up anaverage of 3 ft. 6 in., and to a vertical height of 5 to 6 ft., inwhat were formerly the most eroded portions ; while in someparts of the Clonbrook section, where in the spring of 1917 rapiderosion was taking place, and where part of the public road waswashed away, and the balance threatened with entire destruction,we now find the foreshore built up to a height of 2 to 3 ft. above
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Keywords: ., bookcentury1800, bookdecade186, bookpublisherlondon, bookyear1861
