Suppose we have four (4) scrapers, each with an average load of 25 bcy. If the total cycle time for each scraper is 8 minutes, what would be the total production of these scrapers in bcy per hour if we assume a 50-minute hour efficiency?
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Suppose we have four (4) scrapers, each with an average load of 25 bcy. If the total cycle time for each scraper is 8 minutes, what would be the total production of these scrapers in bcy per hour if we assume a 50-minute hour efficiency?
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- A power shovel is fitted with an engine of 150 f.w.h.p. It operates on full load for 6 minutes followed by 8 minutes of idling at one-third power. Its hourly utilization is for 3 cycles. What is its utilization factor?I need the answer as soon as possibleA fleet of 16 scrapers is available for a job and the plan is to use tandem pushers and the shuttle loading method. If the expected production of a single scraper is 300 LCY/h and the expected cycle time for a wheeled scraper is 5.9 minute: a. Calculate the number of pushers required to serve the fleet b. Calculate the production of the fleet in (BCY/h) if only 2 pushers are available. The soil has 15% Swell.
- Determine the cycle time for a single-engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900ft away under severe conditions. The average haul speed will be 14 mph. the average return speed will be 20 mph. Assume at an average speed of 5 mph, that 200ft is required to both accelerate and decelerate. The operating efficiency will be equal to a 50-min hour. It will take 0.80 min to load this scraper.A 5.55 mtpa LNG plant is being built in Pennsylvania in 2026. A similar plant built in Louisiana in 2014, with a 7.75 mtpa at a cost of $4.35 billion. Use an e factor of 0.80 Adjustments are as follows: The Pennsylvania plant requires $1.2 billion in rock blasting not required in Louisiana. The Louisiana plant will have an extra LNG tank that won’t be at the Pennsylvania plant that costs $688 millon. The project expects an escalation of 3.30 from 2014 to 2026. Do the CFE calculation after the adjustment.7. A hydraulic shovel will be used to excavate sandy clay and load it into a 12 BCY dump truck. The shovel production at 100% efficiency is estimated to be 300 BCY/hour and job efficiency is 0.80. Truck travel time is estimated to be 8.0 minutes and truck fixed cycle time (excluding loading) is estimated to be 2.0 minutes. Equipment costs for the shovel and trucks are $40/h (shovel) and $20/h (truck). A. How many trucks are theoretically required to obtain maximum production? B. What is the expected production of the system in banked measure using this number of trucks? C. What is the expected unit loading and hauling costs in $/BCY?
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- A concrete pour of 1080 cum is planned with a 120 cum/hr capacity. If the efficiency of the plant is assumed to 75%, what will be approximate time taken for completing pour? theI need answer within 20 minutes please please with my best wishesIt is determined that a 5-m width-of-cut combine is traveling 1.5-m/s. In one minute’s time 50 kg of grain are collected in the grain tank and 60kg of material are discharged out of the rear of the machine. Find the machine capacities: field capacity, (ha/hr) material capacity (kg/hr), throughput capacity, (ton/hr)
