. Railroad structures and estimates . - to keep ice and drippings away from walls. The ceiling is of the beam and slab type, reinforced concrete4-in. thick. On top of ceiling slab 2 X 6 timbers are placed3-ft. centers and the space between is filled with fine regranu-lated cork giving 6-in. of insulation. |-in. boards are nailed tothe 2 X 6 and covered with two layers of oil paper, on topof which is placed 1^ in. cement mortar reinforced with wirenetting. The roof is of reinforced concrete supported on Warren rooftrusses and covered with tar and gravel. The cupolas built along the center of th
. Railroad structures and estimates . - to keep ice and drippings away from walls. The ceiling is of the beam and slab type, reinforced concrete4-in. thick. On top of ceiling slab 2 X 6 timbers are placed3-ft. centers and the space between is filled with fine regranu-lated cork giving 6-in. of insulation. |-in. boards are nailed tothe 2 X 6 and covered with two layers of oil paper, on topof which is placed 1^ in. cement mortar reinforced with wirenetting. The roof is of reinforced concrete supported on Warren rooftrusses and covered with tar and gravel. The cupolas built along the center of the building are pro-vided for ice chutes and elevator machinery. The frame is ofsteel and the walls of hard burned tile in cement mortar, except-ing the parts carrying the elevator machinery which is of hardburned brick. The roof is of reinforced concrete similar to themain roof. Each bay is provided with an elevator, 2000 lb. capacity, II CONCRETE ICE HOUSE. 405 T^.io^ r,->in[nnTtj3ojjs. u W Oh 3 bO 406 COST OF ICE HOUSES. operated by an electric hoist and is constructed of steel and de-signed to unload ice automatically into the chute at the top ofthe building. One door is provided for each bay for fillingpurposes; each division wall has a door 3 ft. wide by 20 ft. highlocated about the center. The outside doors are double- andare made of four thicknesses of |-in. boards — two on the in-side and two on the outside, with 2^ in. air space layers of waterproof paper are laid between the doors are hung on heavy strap iron combination hasps andhinges, and all edges covered with rubber canvas yV in. thick ona cushion of hair. The outside of the doors is covered withgalvanized steel. Estimating 10 cents a cubic foot as the cost of a house ofthis character and size, the price would be in the neighborhoodof 8193,000 or about per ton of ice storage capacity. Cost of Ice Storage Houses and Ice. Manufacturing Blantsfor Railway Purposes. It is a for
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