A small hydraulic crawler excavator will be used to dig a trench in common earth. The...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A small hydraulic crawler excavator will be used to dig a trench in common earth. The minimum trench size is 28 inches wide by 4.5 ft deep. The available excavator bucket is 30 inches wide with heaped capacity of 0.75 LCY. The maximum digging depth of excavator is 15 ft. The average swing angle is expected to be 75°. Estimate the hourly trench production in volumetric (Box 1) and linear measure (Box 2) if the job efficiency is 80% and soil swell is 23%. Type of Material Soft (sand, gravel, loam) Average (common earth, soft clay) Hard (tough clay, rock) Depth of Cut (% of Maximum) 30 50 70 90 45 Wheel Tractor 170 135 110 Small Excavator: 1 yd (0.76 m³) or Less 60 250 200 160 Machine Size Medium Excavator: 11-21 yd (0.94-1.72 m²) Angle of Swing (deg) 75 90 200 160 130 120 180 1.33 1.26 1.21 1.15 1.08 0.95 1.28 1.21 1.16 1.10 1.03 0.91 1.16 1.10 1.05 1.00 0.94 0.83 1.04 1.00 0.95 0.90 0.85 0.75 Large Excavator Over 2 yd (1.72 m²) 150 120 100 Material Common earth, loam Sand and gravel Hard clay Wet clay Rock, well-blasted Rock, poorly blasted Type of Material Loose (sand, gravel, loam) Average (common earth) Firm (firm plastic soils) A A Bucket Fill Factor 0.80-1.10 0.90-1.00 0.65-0.95 0.50-0.90 0.70-0.90 0.40-0.70 Adjustment Factor 0.60-0.70 0.90-0.95 0.95-1.00 A small hydraulic crawler excavator will be used to dig a trench in common earth. The minimum trench size is 28 inches wide by 4.5 ft deep. The available excavator bucket is 30 inches wide with heaped capacity of 0.75 LCY. The maximum digging depth of excavator is 15 ft. The average swing angle is expected to be 75°. Estimate the hourly trench production in volumetric (Box 1) and linear measure (Box 2) if the job efficiency is 80% and soil swell is 23%. Type of Material Soft (sand, gravel, loam) Average (common earth, soft clay) Hard (tough clay, rock) Depth of Cut (% of Maximum) 30 50 70 90 45 Wheel Tractor 170 135 110 Small Excavator: 1 yd (0.76 m³) or Less 60 250 200 160 Machine Size Medium Excavator: 11-21 yd (0.94-1.72 m²) Angle of Swing (deg) 75 90 200 160 130 120 180 1.33 1.26 1.21 1.15 1.08 0.95 1.28 1.21 1.16 1.10 1.03 0.91 1.16 1.10 1.05 1.00 0.94 0.83 1.04 1.00 0.95 0.90 0.85 0.75 Large Excavator Over 2 yd (1.72 m²) 150 120 100 Material Common earth, loam Sand and gravel Hard clay Wet clay Rock, well-blasted Rock, poorly blasted Type of Material Loose (sand, gravel, loam) Average (common earth) Firm (firm plastic soils) A A Bucket Fill Factor 0.80-1.10 0.90-1.00 0.65-0.95 0.50-0.90 0.70-0.90 0.40-0.70 Adjustment Factor 0.60-0.70 0.90-0.95 0.95-1.00
Expert Answer:
Answer rating: 100% (QA)
Answer The minimum trench size is 28 inches wide 45 ft deep excavator bucket 30 inches wide heaped c... View the full answer
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
Posted Date:
Students also viewed these civil engineering questions
-
A certain type of machine will be used to produce three products: A, B, and C. Sales forecasts for these products are: 52,000, 65,000, and 70,000 units per year, respectively. Production rates for...
-
A single-pass, shell-and-tube heat exchanger will be used to generate saturated steam by cooling a hot CO 2 gas stream. In the present process, boiler feed water at 100C (373 K) and 1 atm (saturation...
-
A counter-current packed tower will be used to remove H 2 S vapor from a N 2 -rich gas stream. In the present process, the inlet gas stream entering the bottom of the tower contains 5.0 mole% H 2 S...
-
Morse test is applicable only for SI engines: True/False andJustify
-
Some people believe database technology may eliminate the need for double-entry accounting. This creates three possibilities: (1) the double-entry model will be abandoned; (2) the double-entry model...
-
Consider the model of a voluntary environmental agreement, in which there is a firm, a regulator, and a legislature. Benefits of abatement (in terms of reduced damage from pollution) are given by...
-
Heritage, a general contractor, had filed a breach of contract action against an electrical subcontracting firm that had withdrawn its bid right before the contract was to be performed. A jury had...
-
Evan Schwartz has six jobs waiting to be processed through his machine. Processing time (in days) and due date information for each job are as follows: Sequence the jobs by FCFS, SPT, SLACK, and...
-
What output will be produced by the following code segment? int divide (double a, double b}{ } return (a/b); int main(){ double x=1.0, y = 4.0; cout < < divide(x, y); return 0; }
-
1. Prepare a payroll register for Mary's Luxury Travel for the week ended March 22, 20--. (In the Taxable Earnings/Unemployment Compensation column, enter the same amounts as in the Social Security...
-
Suppose Julia and Zach are the only consumers of milk. Julia's demand for milk is defined as Q Julia 12-3P at prices below $4 and zero for prices above $4. Zach's demand for milk is defined as QdZach...
-
For each of the service business transactions of a dentist listed below, you are to enter in the Workbook: a the account name, with the debit account first b whether the account entry is a debit or...
-
For each of the business transactions listed below, you are to enter in the Workbook: a the account name, with the debit account first b whether the account entry is a debit or credit c the chart of...
-
Is Jill Johnson correct when she states the following: I am currently producing 20,000 pizzas per month at a total cost of $75,000. If I produce 20,001 pizzas, my total cost will rise to $75,002....
-
For each of the business transactions listed below, you are to enter in the Workbook: a the account name, with the debit account first b whether the account entry is a debit or credit c the chart of...
-
Show the following transactions for Cheryls Cyclist Courier Service, referenced by date as well as a and b, in the general journal format in the Workbook. a On 1 September 2022 Cheryl starts her...
-
Suppose Firm A has a value of $350m, and Firm B has a value of 80m, and the estimated value for the merged company AB would be around $450m. Suppose the shareholders in the target firm are offered...
-
As indicated by mutual fund flows, investors tend to beat the market seek safety invest in last year's winner invest in last years loser
-
Sherry Hopson owns a retail family clothing store. Her store is located at 4321 Circle Drive, Houston, TX 77001. Her employer identification number is 95- 1234321 and her Social Security number is...
-
Deborah purchases a new $30,000 car in 2012 to use exclusively in her business. If Deborah does not elect to expense or take bonus depreciation in 2012 and holds the car until it is fully...
-
During 2012, Palo Fiero purchases the following property for use in his manufacturing business: Palo uses the accelerated depreciation method under MACRS, if available, and does not make the election...
-
Which ONE of the following statements about how the required sample size for a study changes is INCORRECT? A. Goes up with a smaller Type I error. B. Goes up with smaller Type II error. C. Goes up...
-
When calculating the required sample size for a twogroup superiority RCT with a continuous outcome which of ONE of the following pieces of information is NOT required? A. The probability of a Type I...
-
Which ONE of the following statements about the SES Plan used in the sample size formula for continuous data is INCORRECT? A. Plan is calculated as the difference in means divided by the standard...
Study smarter with the SolutionInn App