Philadelphias Rapid Transit Being An Account of the Construction And Equipment
Philadelphias Rapid Transit Being An Account of the Construction And Equipment
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In our eReader you can find the full English version of the book. Read Philadelphias Rapid Transit Being An Account of the Construction And Equipment Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Philadelphias Rapid Transit Being An Account of the Construction And Equipment
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Despite the fact that the line is at all times under a pressure of 50 pounds per square inch, when not in service, and in time of fire under a pressure of from 250 to 300 pounds, the service was never interfered with. The new line and all the hydrant connections were tested at 400 pounds per square inch prior to putting into service. The line, as long as it was supported in the timbering, was patrolled night and day for the purpose of observing its condition.
Since there is no circulation in th...e line when not in actual fire service, it was thought expedient to protect it against freezing. The entire pipe line and all its connections were wrapped with two i inch layers of hair felt, wired on and covered on the outside with tar paper to protect the felt from the rain or melting snow. The edges of the tar paper were lapped at least 6 inches, and hot tar was applied to the joints to make the covering con- tinuous.
This same system of insulation was applied to all the water distribution pipes and house services, excepting the 20 inch distribution line, the circulation in which was sufficient to prevent freezing.
What to read after Philadelphias Rapid Transit Being An Account of the Construction And Equipment?
You can find similar books in the "Read Also" column, or choose other free books by Philadelphia Arnold Dyer to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Despite the fact that the line is at all times under a pressure of 50 pounds per square inch, when not in service, and in time of fire under a pressure of from 250 to 300 pounds, the service was never interfered with. The new line and all the hydrant connections were tested at 400 pounds per square inch prior to putting into service. The line, as long as it was supported in the timbering, was patrolled night and day for the purpose of observing its condition.
Since there is no circulation in th...e line when not in actual fire service, it was thought expedient to protect it against freezing. The entire pipe line and all its connections were wrapped with two i inch layers of hair felt, wired on and covered on the outside with tar paper to protect the felt from the rain or melting snow. The edges of the tar paper were lapped at least 6 inches, and hot tar was applied to the joints to make the covering con- tinuous.
This same system of insulation was applied to all the water distribution pipes and house services, excepting the 20 inch distribution line, the circulation in which was sufficient to prevent freezing.
What to read after Philadelphias Rapid Transit Being An Account of the Construction And Equipment?
You can find similar books in the "Read Also" column, or choose other free books by Philadelphia Arnold Dyer to read onlineMoreLess
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