Question

يجب اخذ ثلاث مراتب بعد الفارزة في النواتج. The installation cost of a 20 m3 (cubic meter) stainless-steel tank in 1975 was $5000. The tank is cylindrical with flat top and bottom, and the diameter is 6 m. If the entire outer surface of the tank is to be covered with 2-in. thickness of Magnesia block, estimated the present total cost for the insulated tank at 1980. The cost for the 2-in. magnesia block was $1.40 per m2 (square meter) while the labor for installing the insulation was $3.00 per m2 (square meter) ?(1980) Cost Index TABLES Cost indexes as annual averages Marshall so Swift Chemical Installed equipment Nelson-Farrar engineering Eng. Record Indexes, 1926 - 100 refinery construction Index plant cost construction index All Process 1913 1949 1967 index, 1957-1959 Year industry industry-100 - 100 - 100 1946 - 100 = loo 1975 444 452 2412 464 2017 576 182 1976 472 479 2401 503 224 616 192 1977 505 514 2576 540 241 653 2014 1978 545 552 2776 582 259 701 219 1979 599 607 3003 630 281 757 239 1950 560 675 3237 679 303 823 261 1981 721 745 3535 741 330 904 297 1952 746 774 3825 802 357 977 314 1983 761 786 4066 852 380 1026 317 1954 780 806 4146 869 387 1061 323 1955 790 813 4195 879 392 1074 325 1986 798 817 4295 900 401 1090 1957 814 830 4406 924 412 1122 324 1955 852 870 4519 947 422 1165 343 1959 895 914 4606 965 1194 355 1990 Can.) 9047 924 /4673 979 1203 318 356 All costs presented in this text are based on this value of the Marshall and Swift index unless otherwise indicated

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Answer 1

Solution 7 V= 20m² d =6m In 1975 Cost = $5 5000 In 1975 Cost Andex= 444 # In 1980 Cost Index = 560 # V = I d²h as A d² h 20m* = 4x 6%x* h 4 Th= 20 ท 97 = 2 in = 2* 0.0254 m = 0.0508 Thickness of Magnesta block Total area should be covered = Ex I dtach (A) A = 2 * 8² m² t -*x6m x 20 42 m IN # |A=69.8820011m² Total cost for Magnesia m² = A* 661-40 + $3-00) C = 69-8820041 m** $4.4em # C=8307-5 Potal Cost in 1975 (1975 $5000 + $307-5 # C1975 = $5307.5

# Total cost in 1975 Cost Index in 1975 Total cost in 1980 1975 (1980 Cost Index în 1980 $53075 444 560 C1980 Answer C1980 = $6694.14 Affron

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