2013, ISBN: 9781236474315

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 26 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purc… Plus…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 26 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: . . . the power-house will have eleven units of 10, 250 horsepower each (Fig. 183), on 133 feeteffective fall. The adoption of these large units has resulted in a material reduction in the size of the wheel-pit, canal, and power-house, for a given power development, as compared with the American plant. In 1906, five turbines of the double inward-flow type with drafttubes, had been installed. The tail-race tunnel is 2, 200 feet long, 21 feet high by 19 feet wide, and the water in it will flow with a velocity of 27 feet per second. The wheel-pit is 570 feet long, 165 feet deep, and 18 feet wide. The weight of turbine-wheel, shaft, and field-ring is 120 tons, and this weight is carried by a balancing piston, on which water acts at the pressure due to the fall. 205. Electrical Development Company of Ontario. The success of the Niagara Falls Power Company has stimulated other enterprises of similar magnitude. The Electrical Development Company of Ontario obtained rights, and is erecting an installation of 125, 000 horse-power on the Canadian side (see general plan, Fig. 162). In order to construct a masonry intake dam in the river, a cribwork cofferdam 600 feet long was built in some of the worst of the upper rapids, laying bare eleven acres of the river-bed. This temporary dam was, at the worst part, in water 24 feet deep, and flowing at probably 30 miles an hour. Its construction was an engineering feat of the greatest boldness. Within it, is now (1908) being erected a concrete gathering dam with granite coping, to direct water into the intake, while floating ice will pass over the dam and back into the river. The water, before entering the power-house, must pass through submerged arches and screens. The tail-race tunnel, 26 feet high, 23 feet wide, and 1, 900 feet lo. . . This item ships from La Vergne,TN., RareBooksClub, GRIN Verlag. Paperback. New. Paperback. 20 pages. Dimensions: 10.0in. x 7.0in. x 0.1in.Scholarly Essay from the year 2013 in the subject Environmental Sciences, grade: 3, - (UNESCO-IHE), course: Environmental Monitoring and Modelling, language: English, abstract: Protection against flooding and creating deep access to maritime sea routes was the basic requirement for creating prosperity. In the course of many centuries, hydraulic engineering, dredging technology and land reclamation have emerged as means for creating water-bound prosperity and economic development (DEME, 2013). Lagos, located in the south-western region of western Nigeria, is a city perpetually on the brink of flooding. Bounded in the South by the Atlantic Ocean, the city is situated on the mainland, home to 70 of the citys population with series of islands and a peninsula that holds the remaining 30 (Ogunlesi, 2012). The pressures of overpopulation, the growth of industry and the need for protection of the environment were the driving forces behind the project to conquer land from the sea. Although Lagos state is the smallest state in Nigeria, with an area of 356, 861 hectares of which 75, 755 hectares are wetlands, yet it has the highest population. The rate of population growth is about 600, 000 per annum with a population density of about 4, 193 persons per sq. km (Lagos State Government, 2013). In 2008, the Nigerian government commissioned the Shoreline Protection Project, which involved the construction of a 7km long mass of rocks, topped by 5 ton concrete blocks that will rise 9m above sea level. The dam will protect Eko Atlantic City, the massive new 6 billion infrastructure and real estate development (Ogunlesi, 2012). Still 2008 Lagos State Government and South Energyx launched the plan to build a 21st-century city on reclaimed land from the Atlantic Ocean. The main goal for this EIA report is to conduct and provide a detailed document on the Environmental Impact Assessment (EIA) of land reclamation from Atlantic Ocean for decision making and impacts identification on the env This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN., GRIN Verlag, RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 38 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: . . . into the intake or to get a higher fall of water than the stream naturally affords. To raise the water only a few inches or perhaps a foot or so in some small power developments temporary dams are used, consisting of sand bags placed across the stream, or of bundles of brush weighted or staked down, or of stones and a few boards; These, dams, of course, leak copiously and are washed out with every freshet, yet where only a tiny quantity of water is needed to be diverted to the water wheel they are sometimes practical because renewing them costs next to nothing. These temporary dams may be tossed across a stream with half a thought. The permanent dam must be gone at in a workmanlike manner. It may be of earth, wood, stone, concrete or steel, or of some combination of two or more of these materials. If the dam is of earth, always it must be remembered that the water never can be allowed to flow over an earth dam. If it does flow over an earth dam, just as surely as water runs down hill that dam will wash out. Earth dams always must be provided with a spillway or channel of sufficient size to carry off all excess water. The spillway is placed near the top or crest of the dam, in the center or at either side. The spillway should be lined tightly with boards or concrete so that at no point does the running water come in contact with the earth of the dam as the water flows from the upstream side of the dam, through the spillway and down to the extreme downstream side of the dam. Earth will hold still water satisfactorily, but moving water will wear it away. The picture on page 70 shows an earth dam and spillway. It will be noticed that this dam is very wide at the base and that both upstream and downstream the sides of the dam slope gradually to the. . . This item ships from La Vergne,TN., RareBooksClub<