. Electric railway review . Pacific Electric Bridges—Cross Section of Concrete Floor ofthe Alhambra Avenue Overhead Crossing. loading equivalent to Coopers E-oO, the usual impact allow-ance being made in addition. This loading, while appearingheavy for the purposes of an electric road, is simply an indi-cation of what is looked for in future developments, and anexample of the care employed in construction by westernroads. The design of all other concrete structures on the roademployed the same loading. One of the accompanying en-. Pacific Electric Bridges—Typical Reinforced ConcreteOverhead Cr
. Electric railway review . Pacific Electric Bridges—Cross Section of Concrete Floor ofthe Alhambra Avenue Overhead Crossing. loading equivalent to Coopers E-oO, the usual impact allow-ance being made in addition. This loading, while appearingheavy for the purposes of an electric road, is simply an indi-cation of what is looked for in future developments, and anexample of the care employed in construction by westernroads. The design of all other concrete structures on the roademployed the same loading. One of the accompanying en-. Pacific Electric Bridges—Typical Reinforced ConcreteOverhead Crossing. gravings shows a plan and sections of the spans and indi-cates the methods of reinforcing employed in this structure. Alhambra Avenue Overhead Crossing. At Alhambra avenue, on the new shore line cut-off, be-tween Los Angeles and Pasadena, a 4-span plate girder via-duct was built to afford an overhead crossing of Alhambraavenue and the Southern Pacific Railroad tracks. Thegirders support a reinforced concrete floor with side wallsand ballast strips for keeping the ballast in place. The con-crete floor rests directly upon the track girders and is dappedabout two inches over the girders to prevent lateral motion. Culverts and Under Crossings for Highways. Several slightly different types of simple under crossingsfor highways were used. All were built of reinforced con-crete of proportions corresponding to those used in the San Ciabriei river bridge. Plans of three distinct types are shown in the engravings, which al
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
