The total estimated duration of the mass excavation activities in an office building project is 40 days. After 18 days, the project manager receives the following information: Activity Earth Clay Rock 2,976.19 3,571.43 -3571.43 Total Volume to be excavated (cubic yard) What is the forecasted cost variance of Earth excavation? Select the correct response: -2976.19 20,000 8,000 11,000 Unit Price 2.50 5.50 7.50 Actual volume excavated (cubic yard) 8,400 3,100 6,200 Ac C 19 20 53

Please round to the nearest One (i.e., 1). PLEASE DO NOT USE COMMA(S) ON YOUR ANSWER!!! A proposed embankment fill requires 6900 ft³ of compacted soil. The void ratio of the compacted fill is specified as 0.5. Four borrow pits are available as below, which list the respective void ratios of the soil and the cost per cubic feet for moving the soil to the proposed construction site. Make the necessary calculations to determine the total cost for each pit. Assume the specific gravity of soil solids, Gs to be the same at all pits. 1. Calculate the volume of solid (Vs) = ft³ Borrow Pit A: void ratio= 0.91 and the unit cost = $9 /ft³ 2. Calculate the total cost to pay to Pit A = Borrow Pit B: void ratio = 0.95 and the unit cost = $ 11 /ft³ 3. Calculate the total cost to pay to Pit B = Borrow Pit C: void ratio = 1.05 and the unit cost = $8 /ft³ 4. Calculate the total cost to pay to Pit C = Borrow Pit D: void ratio = 0.65 and the unit cost = $ 10/ft³ 5. Calculate the total cost to pay to Pit…

If a trenching machine with an average digging speed of 3.6 ft/min is used to make a 1500 feet-long trench, what is the total hours required to finish the job considering 45-min efficiency of the machine?

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