. Electric railway journal . Cross Section of Tunnel at Milk Street Station ventilation employed. As in the original Boston subwayand in the East Boston tunnel, fresh air is admitted at. ■ Sr/,i AlK C<JtiKCH f/vTueHceor 5o<lco Aitt reo* Tmimc Tugc into-DuctslETTtifeo C - Ducts Shown thus —a Plan of Washington Street Tunnel, Boston, Showing Location of Fan Chambers and Direction of Air Flow before, the capital and property accounts do not need tobe changed. The open construction and equipment accountsmust be dealt with individually as local conditions maywarrant. The revenue accounts
. Electric railway journal . Cross Section of Tunnel at Milk Street Station ventilation employed. As in the original Boston subwayand in the East Boston tunnel, fresh air is admitted at. ■ Sr/,i AlK C<JtiKCH f/vTueHceor 5o<lco Aitt reo* Tmimc Tugc into-DuctslETTtifeo C - Ducts Shown thus —a Plan of Washington Street Tunnel, Boston, Showing Location of Fan Chambers and Direction of Air Flow before, the capital and property accounts do not need tobe changed. The open construction and equipment accountsmust be dealt with individually as local conditions maywarrant. The revenue accounts are practically the same as the oldstandard except under different names and can readily be the stations and portals and withdrawn from the tunnelat points about midway between. The map shows the location of the fan chambers andthe direction of air flow, which is indicated by each of the four points, A, B, C and D, the air in the April 24, ELECTRIC RAILWAY JOURNAL. tunnel enters a duct which leads to the nearest fan cham-ber. In some cases the ducts are beneath the tunnel, asat Eliot Street, or at the side, and in other places, suchas at Milk Street, they ar
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
