1.A contractor is using a CAT 930K loader to remove a rock-dirt mixture from a demolition site.

The loader is equipped with a pin-on bucket that has a rated heaped capacity of 2.7 cubic yards.

The soil being used for the backfill is a rock-dirt mixture weighting 2,900 pounds per loose cubic yard.Consider the average fill factor for the material.

Assume that load time is 18 seconds and total maneuver time is 12 seconds.

Other times can be obtained from tables provided.

The average travel distance for the loader is 150 meters one way on level ground.

a)Perform a tipping load test (50% of full turn static tipping load for wheel loaders). Assume rigid tire.

b) What is the estimated production of the loader in tons per hour, if the contractor plans an operational efficiency of 45 minutes per hour?

924K 930K operational efficiency of 45 minutes per hour? Standard and Standard and High Lift High Lift MODEL Pin On/Hook On Pin On/Hook On 105 KW 141 hp 115 KW 154 hp Flywheel Power: Net Maximum 109 kW 146 hp 119 kW 160 hp Engine Model C6.6 ACERT C6.6 ACERT Rated Engine RPM 1800 1800 4.00" 4.00" Bore 105 mm 105 mm BUCKET FILL FACTORS Stroke 127 mm 5,00" 127 mm 5.00 The following indicates the approximate amounts of material as a percent of rated bucket capacity which will No. Cylinders 6.6L 402 in 6.6 L 402 in' actually be delivered per bucket per cycle. This is known Displacement mph Speeds Forward: km/h mph km/ as "Bucket Fill Factor." 7.0 4.4 7.0 4.4 1st Loose Material Fill factor 13.0 13.0 8.0 Mixed moist aggregates . .. . . . . . . . . . .. . 95-100% 2nd 8.0 Uniform aggregates up to 3 mm (1/8 in) . . 95-100 3rd 27.0 17.0 27.0 17.0 25.0 40.0 25.0 3 mm (1/8 in) to 9 mm (3/8 in) . . . . . . . 90-95 4th 40.0 12 mm (1/2 in) to 20 mm (3/4 in) . . . . . .. . 85-90 Speeds Reverse: km/h mph km/h mph . 85-90 1 st 7.0 4.4 4.4 24 mm (1.0 in) and over . . .. 7.0 13.0 8.0 13.0 8.0 Blasted Rock 2nd 27.0 17.0 27.0 17.0 Well blasted.. . 80-95% 3rd . 75-90 Ath 40.0 25.0 40.0 25.0 Average . . Poor. . . . . .. 60-75 Hydraulic Cycle Time, Rated Load in Bucket: Seconds Seconds Other . 100-120% 5.5 5.1 Rock dirt mixtures . . Raise . 100-110 1.5 1.5 Moist loam . . . . . . Dump Soil, boulders, roots . . . 80-100 Lower (Empty, Float Down) 2.6 2.7 Cemented materials . . . . . 85-95 Total 96 Tread Width 1.93 m 6'3" 1.93 m 6'3" Width Over Tires 2.49 m 8'2" 2.49 m B'2" 1'4 Ground Clearance 400 mm 400 mm Fuel Tank Capacity 195 L 51.5 U.S. gal 195 L 51.5 U.S. gal Hydraulic Tank Capacity 90 L 23.8 U.S. gal 90 L 23.8 U.S. gal Hydraulic System Capacity (includes tank) 160 L 42.3 U.S. gal 160 L 42.3 U.S. gal 930K TRAVEL TIME - LOADED 930K TRAVEL TIME - EMPTY 25 PERCENT GRADE TIME (MIN) PERCENT GRADE TIME (MIN) 200 350 Meter 106 150 206 250 Meters 150 DISTANCE ONE WAY DISTANCE ONE WAY