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- Estimate the hourly production in LCY of a 3 CY articulated wheel loader excavating hard materials from a pit and moving it to a stockpile. The average haul distance is 350 ft and the grade is 10%. The bucket fill factor is 1 and the efficiency is 45 min/hr. Find hourly production in LCY/HR. Please help me with right solution... Urgenttttttttt... Thank youEvaluate cost and production using a 3-cy hoe to load wet gravel into 14-cy-size trucks. Assume a bucket fill factor of 105% and that the hoe bucket swing cycle time is 24 sec. Use the information in table below, a truck net empty weight of 36,860 lb, and a rated payload of 40,000 lb. Dump time will be 1.3 min. The haul distance is 2.5 miles from the pit to the plant up a 3% grade. The rolling resistance of the haul road will be maintained at 3%. The hoe and operator cost $97 per hour, and trucks cost $49 per hour. Assume the efficiency is 60min/hr. 1- What is the truck cycle time? 2- What is the loader cycle time? 3- What is the number of trucks? 4- What is the production of the truck, if you know that the loader will control that production? 5- What is the total cost in dollars $ and in ($/Įcy)? Total Speed(mph) resistance% 35 2 35 4 22.5 12.5 8 7Evaluate cost and production using a 3-cy hoe to load wet gravel into 14-cy-size trucks. Assume a bucket fill factor of 105% and that the hoe bucket swing cycle time is 24 sec. Use the information in table below, a truck net empty weight of 36,860 lb, and a rated payload of 40,000 lb. Dump time will be 1.3 min. The haul distance is 2.5 miles from the pit to the plant up a 3% grade. The rolling resistance of the haul road will be maintained at 3%. The hoe and operator cost $97 per hour, and trucks cost $49 per hour. Assume the efficiency is 60min/hr. What is the truck cycle time? What is the loader cycle time? What is the number of trucks? What is the production of the truck, if you know that the loader will control that production? What is the total cost in dollars $ and in ($/lcy)? Total resistance% Speed(mph) 0 35 2 35 4 22.5 6 12.5 8 7
- A concrete pump of 100 m3/hr maximum output (efficiency 54 min/hr) is used to place 270 m3 of concrete. The concrete is supplied by 9 m3 truck mixer arriving to the site every 12 min. How many hours the placing is required?A crawler dozer with (3.2 x 1 y) blade will be used in dozing operation. The martial is a dry Gravel and is to be moved a distance of (300 ft) with a pushing speed of (3 Km/h) and returning speed of (8 Km/h); the job efficiency is assumed to be 45 min/hr. Calculate the cost of moving bank cubic yard if the O&O cost of the dozer is (65 $/h) and the operator wage is (15 $/h). assume the maneuver time is equal to (0.35 min)?MITT 4. 110 A power shift tractor is excavating tough clay and pushing it a distance of 95 feet. Maximum reverse speeds are as follows; 3 mph in first range, 5mph in second range and 8 mph in third range. The rated blade capacity is 10 LCY. Estimate dozer production if job efficiency factor is 0.83. Ed. 8% B
- A loader operating at 107 cy/hr has 2.5-cy heaped capacity bucket and has a 1.2-min load cycle. The trucks have 11-cy capacity and a 30-minute dump + haul + return time. A 95% fill factor applies to the loader. The project works 50-minute hours. Determine the job production for 7 trucks. A 94.70 cy/hr B 95.55 cy/hr C 93.70 cy/hr D 96.70 cy/hr7. 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?Calculate number of transit mixers (TM) required for transporting concrete from central batching plant to site. The cycle time data of a 6 m³ typical transit mixers is given below: O Loading time of TM = 6.0 minutes. O Travel time of loaded TM to site= 30 minutes. Average waiting time at site = 5.0 minutes Discharge time of concrete at site through concrete pump = 15 minutes. Travel time for return trip = 24 minutes. If the central batching plant having average output of 60 m³/hr is to run continuously, work out the requirement of no. of concrete pumps and TM.
- A 3-cy wheel loader will be used to load trucks from a quarry stockpile of processed aggregates having a maximum size of _ in. The haul distance will be negligible. The aggregate has a loose unit weight of 2,950 lb per cu yd. Estimate the loader production in tons based on a 50-min hour efficiency factor. Use an aggressive cycle time and fill factor.It 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)3. A portable conveyor system is used to load wet sand from a stockpile to a concrete mix plant. The conveyor has a 30" wide belt that has a travel speed of 300 feet per minute. The angle of repose for the sand is 15°. Compute the average production rate of the conveyor in cubic yards per hour.