. Electric railway journal . <?-/ m ancfyW- ^? /Packing ■5 Sg xckg Orvufed with Pifch. ■—^Jftg->\ Pitch and Gran,Vi? Chipp/ngs SLEEPER OR CROSS-TIE CONSTRUCTION OCCASIONALLY USED FOR PAVEDSTREETS IN CLAYEY SOIL AND ON HIGH SPEED LINES mixture pounded in. The 4-in. paving bed for the gran-ite block paving is also of this moist cement. Once thishas set it will tend to prevent water from surging underloosened rails or paving. In this connection, Mr. Holtpoints out in his book that: It is a mistake to supposethata sand paving bed affords any advantage in the na-ture of a cushion beneath the
. Electric railway journal . <?-/ m ancfyW- ^? /Packing ■5 Sg xckg Orvufed with Pifch. ■—^Jftg->\ Pitch and Gran,Vi? Chipp/ngs SLEEPER OR CROSS-TIE CONSTRUCTION OCCASIONALLY USED FOR PAVEDSTREETS IN CLAYEY SOIL AND ON HIGH SPEED LINES mixture pounded in. The 4-in. paving bed for the gran-ite block paving is also of this moist cement. Once thishas set it will tend to prevent water from surging underloosened rails or paving. In this connection, Mr. Holtpoints out in his book that: It is a mistake to supposethata sand paving bed affords any advantage in the na-ture of a cushion beneath the paving, after the setts STANDARD TRACK CONSTRUCTION IN LEEDS tire sections. In this form of the tread, Mr. Holt antici-pated the design ordered by the Brooklyn Rapid TransitCompany in 1915, although his reason for wanting aconed tread is not the same. It will be recalled that theBrooklyn section was changed in order to reduce suchcorrugation as seemed due to over-stressing the metal inthe rail tread because of insufficient areas of contactbetween wheel and rail. In Leeds, the chan
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
