Question: For a certain construction project the estimator has divided the operation of placing concrete into six phases. The activities' quantities are shown in the table

For a certain construction project the estimator

For a certain construction project the estimator has divided the operation of placing concrete into six phases. The activities' quantities are shown in the table below. The equipment used for the concreting activities consists of three cranes, nine dumpers, and twelve vibrators with a production rate of 120 m3 / day: Phase A B C Quantity (m3) 360 480 120 Phase D E F Quantity (m) 240 480 600 The all in rate of one crane = $ 1800 / day The all in rate of one dumper = $ 220 / day The all in rate of one vibrator = $ 70 / day The sequence of work will be done starting with phase (A) and ending with phase (F) sequentially. If these equipment will only work on this operation, and will be held on site until the operation of placing concrete is completed, estimate the unit equipment cost of placing concrete, knowing that: There will be an overlap of 2 days between phases (A) and (B) There will be an overlap of 1 day between phases (D) and (E) Phase (C) will start 7 days after the finish of phase (B) Phase (F) will start 2 days after the finish of phase (E)

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