unit 6 test Q3

A) What are the methods used to dry the excavation?

Determine the approximate quantity and types of equipment by specific tasks that you will use on this project, and brief schedule to meet the given deadline. You are asked to build an earth dam 200 ft high above ground level, and has a 20ft wide width and 2:1 (H:V) side slopes. Using 22,000,000 cubic yards of clay and 4,000,000 cubic yards of clean sand all compacted to 95% of maximum density based on ASTM D698. (The sand functions as a drain to control water flow through the dam.) 30ft of wet sand below ground level needs to be removed and replaced with compacted clay depth of 30 ft and excavation width avg 100 ft. Clay is brought from 3 miles distance from the project at elevation of 100 ft below project level. Sand is from 17 miles away 300ft below project level. Project needs to be completed in 750 days

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What is Compaction grouting? Describe its procedure.

Complete the spreadsheat, by calculating the amount of cut, fill, and either excess or shortage of material with totals shown at the bottom.

Match the excavator to the job: 1. Excavation for a 1” water line to your home. Length of trench= 50 feet, depth of trench 5 feet 2. Excavating the vertical face of a gravel pit from a location in the bottom of the pit 3. Excavating with a long reach in a pond filled with water removing gravel from bottom of pond. 4. Excavating in a deep vertical pit for a pump station foundation pit walls have steel sheet piling to protect from cave-ins.   A. Clamshell bucket on crane B. Dragline bucket on crane C. Hydraulic excavator D. Hydraulic shovel

Why is it sometimes resorted to digging more than one well at the work site when the groundwater level is to be reduced?

Q#2 During excavation processes as a civil engineer what types of precautions should be taken and what are its types .

Q1: How a properly designed, installed, and operated dewatering and pressure relief system will facilitate construction in a shallow water table site? Subject: Ground improvement techniques Program:Civil transportation engineering

Give two examples of situations in which hand excavation may be required.

5. A contractor is getting soil fill from a 300 ft x 200 ft borrow pit. The soil will be excavated to a depth of 3 ft. The swell factor of the soil is 20% and the specific weight of the soil after excavation will be 115 lb/ft3. A single truck will be used to transport all the soil volume to a dump site. The truck's maximum capacity per load is the lesser of 12 yd3 or 15 tons. How many loads will be required to transport the soil fill to the dump?

Describe how the process of segmentation works on the most fundamental level. What makes it distinct from the conventional method of paging? What exactly is meant by the term "compaction"?

What are wet ESPs (WESPs)? What are their advantages?

Define the term Compensation grouting.

Calculate the cost per cubic yard to move earth for a project that plans to use a back-hoe and system of trucks. All equipment carries a rated heaped capacity, has a fill factor of 100%, and works 55-min hours. Back-hoe excavator costs are $105/hr (including operator), cycle time is 0.25 min, and bucket heaped capacity is 5.5 cy. Truck costs are $150/hr (including operator), dump time is 0.70 min (maneuver, dump, turn), heaped capacity is 32.5 cy, and 10 trucks are available for the project. Hauling equipment operates in one direction from A to B to C and finally to D according to the following table. Find the following values (note: carry out your calculations to at least 4 decimal points to obtain the best results): Section Load Length (ft) Speed (mph) full full A 2,800 2,400 2,900 2,800 в 18 empty empty 37 17

A contractor is to excavate an area of 350′ × 150′ to a depth of 9′ and haul it by dump truck to a site where it is to be used for fill. The soil will then be fully compacted. If the swell factor is 25 percent and the shrinkage factor is 18 percent. Estimate the total bare cost for the job (excavation only) using a 2½ CY front-end loader, track mounted. Consider average nation price. Use the crew below.

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Given the mass diagram points and information shown below, what is the total cost of earthwork for this project? Fill the table below: Free haul distance = 0.30 miles, Cost of Excavation = $10/yd3 Max. Overhaul distance = 1 mile, Borrow/Waste = $5/yd3 Overhaul = $1.50/sta.-yd. 3000 1800 2000 1200 1000 1200 1000 1000 1000 50 50 200 -100 O+00 2+00 4+00 6+00 8+00 10+00 12+00 14+00 16+00 18+00 20+00 22+00 24+00 26+00 28+00 30+00 -1200 -1200 1000 -2000 -2500 -2500 -3000 -3000 4000 Distance (stations) Cumulative Volume (yd")

Explain  a hydraulic trap in landfill design? What is the difference between a natural hydraulic trap and an engineered hydraulic trap landfill

You're the project manager/engineer designing an Agitated Cement Slurry Storage Basin to be built on a mine site. 11. Specify arrangement and assembly requirements. 12. Advise stakeholders of selection and make any required adjustments

What is the percentage removal rate for 2.5 log removal (LR)? A. 99.51% B. 99.75% C. 99.68% D. 99.15

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A 4-yard dragline is being used to excavate a canal in wet. sticky clay. The average swing angle is 75 degrees, the average depth of cut is 11 ft. and job efficiency is 44 minutes per hour. If the dragline, must excavate 1.578 BCY of material, how long will it take to complete the job HRS)?

Kindly solve this question under Measurement and Specifications for Civil Engineers.

Explain how vertical drains can be used to speed up consolidation of soils in situ.

4. A crawler hoe having a 2 ½ -cy bucket and whose cost per hour, including the wages to an operator, is $67, will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 20 ft. Determine the cost per bank cubic yard for each condition. (Condition 1. 300 bcy/hr, $0.223/bcy; Condition 2.319 bcy/hr, $0.210/bcy; Condition 3. 128 bcy/hr, $0.523/bcy) Condition (1) (2) (3) Material Moist loam, earth Sand and gravel Rock, well blasted Depth of excavation (ft) 12 16 14 Angle of swing (degrees) 60 80 120 Percent swell 14 Efficiency factor (min-hr) 45 50 45

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Why would a sand and gravel pit be located in a residential neighborhood?

Determine: Use 3 Decimals a) Overhaul volume b) Volume of Borrow c) Volume of waste

A crawler hoe having a 3 -cy bucket and whose cost per hour, including the wages to an operator, is $150, will excavate and load trucks under each of the stated conditions. The maximum digging height of the machine is 26 ft.  Determine the cost per cubic yard for each condition.

The company that you are working for is currently in the planning stage of road construction in an area. As the engineer in the company, you have been tasked to plan the earthwork for the project. Based on the site investigation activity, you found that the main road for the transportation of the earth is a public road that is heavily used by the residents in the area, especially during peak hours. Apart from that, the fastest access to the site also involved a small culvert with a height clearance of 4 meters. Through further ground exploration, you found that the earth in the area is mainly common earth (loam). A) Discuss the possible constraint(s) that the company may face during the earthwork and the possible solution(s) to minimize the constraint(s).