. The Street railway journal . COVERING THE PIPES WITH CONCRETE. SHORING UP DURING EXCAVATION panying views show the method of laying the McRoy con- joints are broken. In laying the pipes the adjoining end:- duit, which has been adopted for approximately one-thirdthe work of the Metropolitan Street Railway Companyand for about half of the new work of the Third AvenueRailway Company. This conduit is made of vitrified clay in 6 ft. lengths, fit closely and the pipe is held in perfect alignment by ironor steel dowel pins. These pins are 4 ins. in length andhave a shoulder at their center to preve
. The Street railway journal . COVERING THE PIPES WITH CONCRETE. SHORING UP DURING EXCAVATION panying views show the method of laying the McRoy con- joints are broken. In laying the pipes the adjoining end:- duit, which has been adopted for approximately one-thirdthe work of the Metropolitan Street Railway Companyand for about half of the new work of the Third AvenueRailway Company. This conduit is made of vitrified clay in 6 ft. lengths, fit closely and the pipe is held in perfect alignment by ironor steel dowel pins. These pins are 4 ins. in length andhave a shoulder at their center to prevent them slippinginto the dowel holes further than intended. The pipes are lined up on mandrels, and after each
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
