. Cassier's magazine . THE GREAT REINFORCED CONCRETE OIL TANK NEAR SAN LUIS OBISPO, BEFORE THE ROOF WAS PUT ON, CAPACITY, 1,000,000 BARRELS CASSIERS MAGAZINE. OIL FLOWING THROUGH AN OPEN DITCH IN TEXAS wells were opened. Two concretecircular reservoirs were constructednear San Luis Obispo, which are thelargest petroleum holders in Amer-ica. They are uniform in size, andeach covers no less than 6y2 acres ofground, having a capacity of 1,000,-ooo barrels. In the construction of this TankFarm, as the group of reservoirs istermed, some very interesting engi-neering plans have been carried outto in
. Cassier's magazine . THE GREAT REINFORCED CONCRETE OIL TANK NEAR SAN LUIS OBISPO, BEFORE THE ROOF WAS PUT ON, CAPACITY, 1,000,000 BARRELS CASSIERS MAGAZINE. OIL FLOWING THROUGH AN OPEN DITCH IN TEXAS wells were opened. Two concretecircular reservoirs were constructednear San Luis Obispo, which are thelargest petroleum holders in Amer-ica. They are uniform in size, andeach covers no less than 6y2 acres ofground, having a capacity of 1,000,-ooo barrels. In the construction of this TankFarm, as the group of reservoirs istermed, some very interesting engi-neering plans have been carried outto insure the necessary strength towithstand the great lateral pressureand to give durability of construc-tion in each reservoir. The wall isa cantilever type of retaining barrier,built circular, with radius of 300feet 3 inches. The wall stands free,without buttresses, is 20 feet high and17 feet at base, covered by a woodenroof supported by posts which rest onconcrete footings. The floor is 2^inches thick, and slopes to the cen-tre, where a sump is built with anoutlet pipe for purposes of sump is three feet lower thanthe base of the wall. The r
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