. Design of the freight yard of the Delaware, Lackawanna & Western Railroad at Scranton, Pa. . the yard. The exi£ was done by contract. The prices were sixteencents per cubic yard for earth, and tv/enty-four cents per cubic yardfor rock. The railroad hauled all of the spoil which was to be re-moved from the site. This was done on flat cars; about twenty carsto a train each carrying five to seven cubic yards . The cars wereunloaded by a steam plow pulled by a locomotive. The excavation wasdone by blasting and by two steam shovels of two and a half an<ffthree cubic yards capacity. The
. Design of the freight yard of the Delaware, Lackawanna & Western Railroad at Scranton, Pa. . the yard. The exi£ was done by contract. The prices were sixteencents per cubic yard for earth, and tv/enty-four cents per cubic yardfor rock. The railroad hauled all of the spoil which was to be re-moved from the site. This was done on flat cars; about twenty carsto a train each carrying five to seven cubic yards . The cars wereunloaded by a steam plow pulled by a locomotive. The excavation wasdone by blasting and by two steam shovels of two and a half an<ffthree cubic yards capacity. The latter shovel moved about five tosix hundred cubic yards per day and the other a little less. Alarge amount of the excavation at the east end of the yard was through an old mine, so that a portion of the debris v;as stov/ed intothese old mine openings. The coal excavated was of considerablevalue, being used by the contractor and the railroad on the v/orks . The total excavation was a little over 400 000 cubic yards. Thedisintegrated condition of the rock caused it to be excavated at the. ?7 remarkably lov/ price that was paid. Fig. 7 shows the three yardsteam shovel at v/ork, also one of the mine openings into whichmaterial v/as stowed. The culvert over Keyser Creek is a concrete arch of about atwelve foot span. The concrete was of broken stone aggregate, a2:4:6 mixture. The unit cost as shown in Table III was higher thanon most of the work and is typical of contract construction. Thiswas chiefly due to tv/o reasons, viz., the better grade of concreteand the difficulty of placing it in the forms . It was mixed andthen hauled in wheelbarrows up a steep slope about twenty-five feetlong and then dumped into the forms. This latter process especiallyadded grettly to the cost of the concrete. The total cost of the yard improvements, exclusive of the newshops,is estimated at ^2 000 000. All of the retaining walls in theiaiast end of the yard were built by contract at six dollars per
Size: 1324px × 1887px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookiddesigno, booksubjecttheses
