The American practice of gas piping and gas lighting in buildings by William Paul GerhardThe American practice of gas piping and gas lighting in buildings by William Paul Gerhard

The American practice of gas piping and gas lighting in buildings

byWilliam Paul Gerhard

Paperback | January 31, 2012

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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: ... CHAPTER VII. RULES, TABLES AND REGULATIONS OF GAS COMPANIES AND OF BUILDING DEPARTMENTS. One of the chief faults of gas piping, as commonly done by gas-fitters, is that too much small pipe is put into the work. To determine by calculation the sizes of pipe required, at least for the main risers and distributing lines, appears to the ordinary gas-fitter to be an ultra-refinement not worthy of a serious thought; but, worse than that, even the handy tables, gotten up for the purpose of rendering tedious calculations unnecessary, are neither consulted nor followed by him. Before giving a number of rules and regulations of gas companies, I should, perhaps, discuss briefly the flow of gas through pipes, and the formula used to determine the theoretical discharge. Many of the tables, embodied in some of the rules given later on, should be used cautiously, because the sizes and gas discharges therein given apply to large and smooth pipes. For this reason the advice will be found in some of the tables to increase the sizes, in case rough or old iron pipes are used. The English tables generally are based upon the assumption that the gas pipes are of smooth lead, a material which is not used in the American practice of gas-fitting. But even some of the American tables recently published (for instance those of the United Gas Improvement Co., of Philadelphia) have increased the required pipe sizes materially to make proper allowance for partial stoppages, due to gradual accumulations of rust and condensed naphthaline in the pipes. The formula almost universally used for the flow of gas through pipes is that by Dr. William Pole, and reads as follows: in which formula s = specific gravity of gas, air being taken as 1.00, I = length of pipe in yards, d = diameter of pipe...
Title:The American practice of gas piping and gas lighting in buildingsFormat:PaperbackDimensions:114 pages, 9.69 × 7.44 × 0.24 inPublished:January 31, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217567045

ISBN - 13:9780217567046