Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.)
Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.)
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In our eReader you can find the full English version of the book. Read Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.) 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 Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.)
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It was under such conditions that the use of wood to form the whole, or the lower part, of the sewer was resorted to.
Wood was no cheaper in itself than masonry ; but a wooden sewer could be built very much more rapidly than a brick one, and could be built by unskilled laborers. Also, a wooden invert could be fastened in place, if necessary, under a foot or two of water. Moreover, a wooden sewer, fastened by spikes Digitized by Google 94 MAIN DRAINAGE WORKS.
and oak treenails, possessed conside...rable elasticity, and could settle slightly in places, or assume an undulating form, without breaking.
Therefore, under conditions such as those just mentioned, the use of wood to form the shell of a sewer was often resorted to. There were disadvantages attending this mode of con- struction. The elasticity which permitted the sewer to bend longitudinally without breaking, also made it tend to yield trans- versely, sinking at the crown and bulging at the sides, when- ef er the earth outside was at all compressible.
What to read after Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.)?
You can find similar books in the "Read Also" column, or choose other free books by Boston (Mass.). Engineering Dept to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It was under such conditions that the use of wood to form the whole, or the lower part, of the sewer was resorted to.
Wood was no cheaper in itself than masonry ; but a wooden sewer could be built very much more rapidly than a brick one, and could be built by unskilled laborers. Also, a wooden invert could be fastened in place, if necessary, under a foot or two of water. Moreover, a wooden sewer, fastened by spikes Digitized by Google 94 MAIN DRAINAGE WORKS.
and oak treenails, possessed conside...rable elasticity, and could settle slightly in places, or assume an undulating form, without breaking.
Therefore, under conditions such as those just mentioned, the use of wood to form the shell of a sewer was often resorted to. There were disadvantages attending this mode of con- struction. The elasticity which permitted the sewer to bend longitudinally without breaking, also made it tend to yield trans- versely, sinking at the crown and bulging at the sides, when- ef er the earth outside was at all compressible.
What to read after Main Drainage Works of the City of Boston (Mssachusetts, U. S. A.)?
You can find similar books in the "Read Also" column, or choose other free books by Boston (Mass.). Engineering Dept to read onlineMoreLess
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