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tensa zangetsu [6.8K]
3 years ago
15

As a project manager of Very Good Construction you want to plan renting a fleet of 25 cu yd tractor-scrapers and have them hauli

ng between the pit and a road construction job. The haul road is a rutted dirt road that deflects slightly under the load of the scraper. There is a slight grade of 2.5% from the pit to the fill location. Rolling resistance factor is assumed as 100 lbs/ton. The return road is effectively level. The haul distance to the dump location is 0.50 miles and the return distance is 1.50 miles. The scrapers are push loaded in the pit. The cycle time for the pusher is 1.50 minutes and the cycle time for the scrapers is 8 minutes. Assume that the weight on the wheels is 75 tons (full) and 50 tons (empty).
a. What are the rolling resistances and grade resistance?
b. What are the effective grades?
c. How many scrapers you recommend to be rented? Explain.
d. What is the production of the system in case 4 scrapers would be rented?
Business
1 answer:
zzz [600]3 years ago
7 0

Answer:

Explanation:

a. Rolling resistance factor = 100 lb/ton for hauling as well return path Grade for haul route = 5%. Grade for return route = 0 From Table 14.2 – rutted dirt road – rolling resistance factor = 100 lb/ton, Rolling resistance on haul route = 100(75) = 7,500 lbs Rolling resistance on return route = 100(50) = 5,000 lbs Grade resistance, GR = % grade 20lb/ton/%grade weight on wheels (tons) Grade resistance on haul route = 5 × 20 × 75= 7,500 lbs

b. Effective (Equivalent) Grade = RR% + GR% To convert rolling resistance, RR into rolling resistance factor, RR%, divide rolling resistance by 20 (see section 14.5 in the text book) and therefore; Effective grade = + grade Effective grade while hauling = + 5 = 10% Effective Grade while returning = + 0 = 5%.

c) Considering the cycle time of the pusher and the scrapers, Scrapers to be used = = 6.4 The motivation is to keep the pusher busy all the time instead of waiting for the scraper to return If 6 scrapers are used, the pusher will be idle and the cost will be lower (since we will have 6 scrapers and 1 pusher). So is the productivity. If 7 scrapers are used, the scrapers will be idle and the productivity will be higher. So is the cost.

d)The productivity will depend on the scrapers (the pusher with idle time) which will be:

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sashaice [31]

Answer:

Land, Building and equipment

Explanation:

As we know that

Total assets include current assets, fixed assets and intangible assets Current assets involve cash, stock, account receivables, etc. Fixed assets comprise plant & machinery, property, equipment, furniture & fittings, etc.

So according to the given situation, the land, building and the equipment is considered generally as a long term asset

4 0
3 years ago
The December 31, 2018, adjusted trial balance for Fightin' Blue Hens Corporation is presented below.
Mama L [17]

Answer:

Please see answers below

Explanation:

1. Prepare an income statement for the year ended, December 31, 2021

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2. Prepare a statement of stockholder's equity for the year ended, 31, December, 2021

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3. Prepare a classified balance sheet as at 31, December

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3 years ago
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Keith_Richards [23]

Answer:

Explanation:

A career is a type of occupation that is done during a specific period of time. Careers offer a chance for progress. When choosing a career, one should consider the following factors;

1. Job requirements

One should consider the job requirements of that particular career since these requirements always determine how well one will perform in his/her career. The job requirements to be considered are; education level, level of expertise needed, and the experience.

2. Short-term goals

A short term goal is a set of predetermined achievements that one needs to attain usually in a short time frame. A career is an undertaking that is always long-term and therefor needs long-term goals rather than short-term goals.

3. Skills and interests

A skill is a particular set of capabilities that enables one to perform better at a certain job. Some careers need a specific set of skills that if one cannot develop or acquire, then the career undertaking might prove very difficult. An interest is something that you like. It is always advisable to choose a career that you are interested in, since this gives one the passion to pursue it.

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The career that you want to pursue should be one that is marketable. Getting a job for a marketable career is much easier than one that is not as marketable. This helps in avoidance of frustrations of failed job searches.

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<h3>What is a Cover Letter?</h3>

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