A load trucks is using a hoe equipped with a special 3½ cy light weight bucket....

A load trucks is using a hoe equipped with a special 3½ cy light weight bucket. Working efficiency is a 45 min-hr efficiency. The material is a sandy clay, 2,600 lb./lcy. The digging face will have an average height of 60% of max. digging depth and the angle of swing will always be less than 60º. The round-trip time of either truck, exclusive of load time, is 5 minutes Consider 2 truck sizes • 18 lcy and 26 lcy. • Operated the 18 LCY truck costs $55.62/hr • Operated the 26 LCY truck costs $73.18/hr • Operated the hoe costs $65.50/hr a. 10 pts.

a.Which haul fleet is cheaper?

b. 20 pts. You can increase your productivity with a better hoe operator, this new operation is reflecting an improvement of 5% of the loading cycle time. However, the Operated cost will increase from $65.50/hr to $68.05/hr. Does it make sense to improve the operation? (from a cost estimation point of view). What would you decide to do and why?

Solutions

Expert Solution

Hie.

The question is vastly related to practical scenarios and is insightful as well. However, let us concentrate on the solution first.

Note(extra comment) - I think the solution is a bit on the conservative side since I have assumed 100% filling capacity of trucks but since we have to consider the same parameters for both fleets, the effect will be countered. I hope this suffices but for any query of yours, I am available @ comment section to assist and support. Please upvote the answer if you liked it. Thank you and take very good care of yourself. Happy Learning.

Ally Wells answered 7 months ago

Next > < Previous

Related Solutions

A shovel with a 3.75-cy wheel loader will be used to load trucks from a quarry...

A shovel with a 3.75-cy wheel loader will be used to load trucks from a quarry stockpile of processed aggregates having a maximum size of 3/8 inch. The haul distance will be negligible. The aggregate has a loose unit weight of 2950 lb/cy. Estimate the loader production in tons based on a 50-min hour efficiency factor. Use an aggressive cycle time and fill factor.

A 4-cy wheel loader will be used to load trucks from a quarry stockpile of uniform...

A 4-cy wheel loader will be used to load trucks from a quarry stockpile of uniform aggregates (1" and over in size). The haul distance will be negligible. The aggregate has a loose unite weight of 2,750 lb/cy. Estimate the loader production in tons based on a 50 min-hour efficiency factor. Use a conservative cycle time and fill factor.

A shovel with a 3-cy heaped capacity bucket is loading well blasted rock on a highway...

A shovel with a 3-cy heaped capacity bucket is loading well blasted rock on a highway project. The average face height is 22 ft. The shovel has a maximum rated digging height of 30 ft. Most of the cut will require a 140-degree swing of the shovel to load the haul units. Use efficiency factor 45-minues per hour. What is an aggressive production estimate in bank cubic yards? Show all the calculations

Special Order Decision Robin Company produces a light-weight travel raincoat with the following unit cost: Direct...

Special Order Decision Robin Company produces a light-weight travel raincoat with the following unit cost: Direct materials P4.00 Direct labor P1.00 Variable overhead P1.75 Fixed overhead P2.00 Unit cost P8.75 While production capacity is 200,000 units per year, Robin expects to produce only 170,000 raincoats for the coming year. The fixed selling costs total P85,000 per year, and variable selling costs are P0.50 per unit sold. The raincoats normally sell for P12 each. At the...

3. Nacho Company is a retailer of durable, light-weight backpack bag and consistently known for their...

3. Nacho Company is a retailer of durable, light-weight backpack bag and consistently known for their high-quality and innovation. The firm is considering dropping the Pink backpack product and only to sell the traveler backpack. Nacho Company allocates fixed costs (both corporate and selling/administrative) to products based on sales revenue. When the president of the company saw the product-line income statements (presented below), he agreed that the Pink product should be dropped. If this is done, sales of traveller are...

Compute Mathematical Analysis of 3 Phase Half wave uncontrolled AC DC rectifire using RL Load using...

Compute Mathematical Analysis of 3 Phase Half wave uncontrolled AC DC rectifire using RL Load using Fourier Series of Output Voltage and filters to remove Harmonics

3. Nelson's Foods wishes to compare the weight gain of infants using its brand versus their...

3. Nelson's Foods wishes to compare the weight gain of infants using its brand versus their competitor's. A sample of 90 babies using Nelson's product revealed a mean weight gain of 7.6 pounds in the first three months. The population standard deviation for Nelson's brand was 2.3 pounds. A random sample of 105 babies using the competitor's brand revealed a mean weight gain of 8.2 pounds with a population standard deviation of 2.9 pounds. At the 6% significance level, can...

3. Create a portfolio using the four stocks and information below: Expected Return Standard Deviation Weight...

3. Create a portfolio using the four stocks and information below: Expected Return Standard Deviation Weight in Portfolio Stock A 26.00% 39.00% 18.00% Stock B 19.00% 20.00% 23.00% Stock C 32.00% 31.00% 14.00% Stock D 29.00% 40.00% 45.00% ---------------------- ---------------------- ---------------------- ---------------------- Correlation (A,B) 0.6100 ---------------------- ---------------------- Correlation (A,C) 0.2500 ---------------------- ---------------------- Correlation (A,D) 0.9000 ---------------------- ---------------------- Correlation (B,C) 0.4500 ---------------------- ---------------------- Correlation (B,D) 0.7300 ---------------------- ---------------------- Correlation (C,D) 1.0000 ---------------------- ---------------------- (Do not round intermediate calculations. Record your answers...

Subjects