You are a Project Engineer on a large earth dam project that has a volume of 5xl10° yd' of select fill, compacted such that the final voids ratio in the dam is 0.80. Your boss, the Project Manager delegates to you the important decision of buying the earth fill from one of three suppliers. Which one of the three suppliers is the most economical, and how much will you save? Sells fill at $ 5.28/ yd' with e= 0.90 Sells fill at $ 3.91/ yd' with e= 2.00 Supplier A Supplier B Supplier C Sells fill at $ 5.19/ vd with e=1.60
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- You have been hired as a project Engineer for a development company in Namugongo to build 610 housing units. Since the original ground is low, you need fill material to raise the ground level. Your estimated fill requirements are 700,000m3 with a void ratio of 0.46. the insitu material at the borrow pit has a void ratio of 0.39 where as the material dumped in trucks has a void ration of 0.71. How many trucks will you need, if each truck carries 10m3? i will need all the work outs in full and well explained1. for a project your company is a Haul away 350 bank cubic yards of sand. If the sand has a swell of 12% how many loose cubic yards of sand will need to be hard how many truckloads are required a Holden sent off so that each truck and haul 12 loose cubic yards? 2. if 750 compacted cubic yards of in-place oil is required for a project how many loads of import will be required. The important material has a swell of 30% in a 15% shrinkage factor the trucks can haul 10 loose cubic yards.A project to move packed earth requires you to decide whether to usea dozer/scraper operation or excavator/truck operation. Determinethe most economical operation based on the dozer/scraper operationestimated at $1.25/cy. All equipment carries a rated heaped capacity, hasa fill factor of 100%, and works 45-min hours. Excavator costs $95/hr(including operator), cycle time is 0.28 min, and bucket heaped capacityis 5.0 cy. Truck costs $150/hr.(including operator), dump time is 0.5 min(maneuver, dump, turn), heaped capacity is 31.7 cy, and 12 trucks areavailable for the project.Hauling equipment operates in one directionfrom A to B to C and finally to D. Section Load Length (ft) Speed (mph) A full 3000 9B full 2500 17C empty 3000 36D empty 3000 16
- What should be the volume of the pit that remains in theborrow area after all the material required for the fill hasbeen removed?Describe about the Alternative Methods of Transporting Earth Fill.The in-situ moisture content of a soil is 18% and its moist unit weight is 105pcf. The specific gravity of the solids is 2.75. The soil is to be excavated and transported to a construction site and then compacted to a minimum dry weight of 103.5pcf at a moisture content of 20% How many cubic yards are needed to produce 10000 cubic yard? How many truckloads are needed to transport the excavated soil if each truck can carry 20tons? Assume that the excavated soil has a swelling factor of 15%.
- A contractor is to excavate an area of 350′ × 150′ to a depth of 9′ and haul it by dump truck to a site where it is to be used for fill. The soil will then be fully compacted. If the swell factor is 25 percent and the shrinkage factor is 18 percent. Estimate the total bare cost for the job (excavation only) using a 2½ CY front-end loader, track mounted. Consider average nation price. Use the crew below.P = 313 kN show your solutionA limestone mine has the following equipment at its primary production face: Excavator: a 15 yd3 (11.5 m3) front-end loader with 40 sec cycle time Trucks: five 100 ton (90 tonne) trucks Material: average blasted rock with medium-hard digging conditions Working conditions: average Haulage cycle time: 20.0 min (a) What is the sustained production rate of the system in tons/hr, assuming 60 min of production per hour'? (b) Which equipment (loader or trucks) governs? (c) What improvements would you recommend to increase mine production without changing equipment?
- The owner of the quarry signs a contract to sell his stone on the following basis The purchaser is to remove the stone from a certain portion of the pit according to a fixed schedule a volume, price , and time. The contract is run 18 years as follows. Eight years excavating a total of 20, 000 m per year at 10 P per meter, the remaining ten years, excavating a total of 59, 000 m per year at 15 per meter. On the basis of equal year end payments during each period by the purchaser, what is the present worth of the pit to the owner on the basis of 15% interest?A simple platform having a stair will be constructed, as an estimator, your boss gave you an assignment to estimate the concrete works needed for the stairs only. The width of the stair is exactly 1 meter. Using Class "A" mixture, how many cu.m. of sand is needed for the project? Note: The values are not rounded to the nearest 50ths; use the exact value instead. 0.825 cu.m. 0.875 cu.m. 1.075 cu.m. 0.975 cu.m.underwhat condition would you preferborrowing new materials from a borrow pit for highwayembankment