File:Electric railway journal (1918) (14761137882).jpg

Identifier: electricrailway511918newy (find matches)
Title: Electric railway journal
Year: 1908 (1900s)
Authors:
Subjects: Electric railroads
Publisher: (New York) McGraw Hill Pub. Co
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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y. Some designsare quite elaborate, as for example the combined lightand trolley pole of the Municipal Railway of San Fran-cisco. On the other hand, nothing could be finer than concrete poles require good forms and skilled labor, andunless the number made is large the cost per poleis very apt to be high even for the very simple types.The poles are heavy at best, and require special careand extra labor for handling and erecting, which fur-ther adds to the cost, while if molded with holes orgains for attachments, later changes are not readilymade and are apt to be costly, and if such provisionis not made it is equally difficult to make any attach-ment at all. These facts, which are particularly evi-dent when a company first begins to make and useconcrete poles, are undoubtedly responsible for the dis-like by many companies and the consequent failure touse what is quite likely to be one of the important polematerials of the near future. The theory of the reinforced concrete poles is very
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SPAN WIRE CONSTRUCTION WITH CONCRETE POLES, NEW YORK STATE RAILWAYS, ROCHESTER LINES. COMPANY HAS MANY SUCH POLES IN USE Till S the severe simplicity of the square pole of the samecompany or that of the Pennsylvania Railroads Jerseymeadows telegraph line, unless it is the standardoctagonal pole of the New York State Railways, whichlatter is not only attractive and substantial but actuallycosts but little more than the corresponding size inwood. In several instances where wood poles had beenordered off ths streets of certain municipalities theauthorities have been so pleased with the appearanceof concrete poles that they have permitted their useinstead, at a cost much less than that of steel poles,and far less than that of underground construction. Some Reasons for the ComparativeUnpopularity of Concrete Poles As against these advantages of long life, support ofattachments in case of failure of the pole, resistance tofire and good appearance there are several disadvantagesinherent in t

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