The Surveyor and municipal engineer . taigs an obstinatedisbelief in the statement that the Barking filtersdealt with sewage at the rate of 1,000,000 gjillonsper acre in twenty-four hours, lint in view of theexpress, and naturally .somewhat indijinant, declara-tion by Mr. Thudichum on Monday, we thinkthe figures may safely bo accepted and the matterallowed forest. Now that bacteriological methodsaiv meeting with ap|irovnl from engineers generally,the time may possibly not be fai- distant when eventhe Local Government Boaitl will i-elax verdict of the Royal Commission now sit
The Surveyor and municipal engineer . taigs an obstinatedisbelief in the statement that the Barking filtersdealt with sewage at the rate of 1,000,000 gjillonsper acre in twenty-four hours, lint in view of theexpress, and naturally .somewhat indijinant, declara-tion by Mr. Thudichum on Monday, we thinkthe figures may safely bo accepted and the matterallowed forest. Now that bacteriological methodsaiv meeting with ap|irovnl from engineers generally,the time may possibly not be fai- distant when eventhe Local Government Boaitl will i-elax verdict of the Royal Commission now sittingwill be awaited with no small interest, hut one ofthe speakers on .Monday no doulit expressed a verygeneral feeling whei\ he iemarked that it was notconceivable that the commission could fix upon oneparticular system as aj>plic4»ble alike to the needs ofeverv district apiiit from special local conditions. 728 THE SURVEYOR AND MUNICIPAL [orcKMRER 9, i89s. Tlie Blrmliigfiaiii Water Soheme, li. By JAiiES IstAXSERCiH. m, SuBMERGKD Dam Culvkrt inCourse OF CONSTRUCTION (December, 1896). CONSTRUCTION OF THE DAMS. In this country hundreds of impounding reservoirs havebeen constructed for the storage of water for canal purposesand for town supply, and a very large majority of these havebanks of earth supporting an internal wall of puddled clay,which forms the watertight part of the barrier. Undergroundwatertightness is secured by a tongue of concrete G ft. thickfounded on impervious shale; above, a pnddle wall resting ina concrete shoe is carried up to nearly top bank with support-ing earth on each side. In this case we had to go down 70 ft.,in the middle of the valley and over 150 ft. at the sides toobtain a watertight foundation. There are still only very fewstone dams of any great size in England, althongh many areto be found on the continent of Europe. The Elan andClaerwen valleys were, however, practically adapted for snchstructures, the dam sites being all on roc
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgreatbritain, bookyea
