Workers are to enter an excavation to repair a damaged pipeline on a construction site. The soil in the excavation appears to be a cohesive soil installed during the initial pipeline installation. Ground water is noted to be entering the bottom of the excavation. If the proposed excavation protective system is sloping, what is the maximum side slope of the excavation, per OSHA requirements?

Workers are to enter an excavation to repair a damaged pipeline on a construction site. The soil in the excavation appears to be a cohesive soil installed during the initial pipeline installation. Ground water is noted to be entering the bottom of the excavation. If the proposed excavation protective system is sloping, what is the maximum side slope of the excavation, per OSHA requirements?

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 5.13P

See similar textbooks

Similar questions

A road section is 600 m long (20 Stations). The cut and fill volumes are to be computed between each station. The table below lists the station numbers, the end area values (m:) between each station that are in cut (column 2) and that are in fill (column 3). Material in a fill section will consolidate (known shrinkage), and for this road section, is 10 as percent. Determine the accumulated volumes? End Area (m?) 1 Station 3 Cut Fill 3 18 2 50 2 97 4 130 8 51 40 45 45 20 80 122 2 6. 130 10 140 11 100 12 80 30 13 75 20 14 50 50 15 20 80 16 10 100 17 120 18 120 19 40 50 20 30 30 012345678
The answer is 3830.43 LCM 6. As part of a road construction project, an excavation that is 2km long by 3m wide and 0.5m deep must be backfilled and compacted. The excavation will be backfilled with sand and gravel. What volume of (in LCM) of sand and gravel must be brought to site to complete this job?
During excavation processes as a civil engineer what types of precautions should be taken and what are its types .
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).
True or false Enly) A. The cast of soil investigations ranges from 5% to 15% of the total cost of implementing the project. B- The soil exploration program for any project is one of the Common factors that must be agreed upon between the owner, the implementing contractor, and the consultant, and the Consultant. c- The stage of collecting available information may require obtaining different information, such as geological map to delermine the layers of Soil deposits and the depth of the •Yock layer. D-The initial investigation stage begins with making anumber of probes and test pits that are distributed over the area of the project site.
Indicate the general advantages and disadvantages associated with hydraulic fill placement methods.
A borrow site south of Harrisburg will be used to provide the material needed to construct 432,600 cy of embankment for the Harrisburg Expressway project. Soil testing has indicated the following unit weights: Bank - 102 pcf Loose - 85 pcf • Compacted - 118 pcf The contractor plans to use 14 cy on-highway dump trucks and has agreed with the owner of the borrow site property to a price of $1.25 per excavated cubic yard. 1. What is the cost of purchasing the borrow material? 2. How many truck loads must be hauled from the borrow site to the embankment site?
Question 11 Name the 2 most typical types of pits: a. bordered pit O b. semi-bordered pit c. simple pit d. cross-field pit Oe. unilateral pit
Please round to the nearest One (i.e., 1). PLEASE DO NOT USE COMMA(S) ON YOUR ANSWER!!! A proposed embankment fill requires 6900 ft³ of compacted soil. The void ratio of the compacted fill is specified as 0.5. Four borrow pits are available as below, which list the respective void ratios of the soil and the cost per cubic feet for moving the soil to the proposed construction site. Make the necessary calculations to determine the total cost for each pit. Assume the specific gravity of soil solids, Gs to be the same at all pits. 1. Calculate the volume of solid (Vs) = ft³ Borrow Pit A: void ratio= 0.91 and the unit cost = $9 /ft³ 2. Calculate the total cost to pay to Pit A = Borrow Pit B: void ratio = 0.95 and the unit cost = $ 11 /ft³ 3. Calculate the total cost to pay to Pit B = Borrow Pit C: void ratio = 1.05 and the unit cost = $8 /ft³ 4. Calculate the total cost to pay to Pit C = Borrow Pit D: void ratio = 0.65 and the unit cost = $ 10/ft³ 5. Calculate the total cost to pay to Pit…
You are a civil engineer who has been given the task to monitor the excavation of a road construction. It is deemed viable that it typically takes half-an-hour to excavate a cubic meter of soil using a typical backhoe which applies to soils within a two-meter depth from its NGL. This parameter includes hauling, piling, and other small movements within the area bound for excavation. Given that the volume to be excavated is 40m³ in your specified road station using only one backhoe, determine the exact total cost for this setup if the backhoe rent costs Php1800 per hour which includes its gasoline and other daily maintenance costs. The hourly-wage paid to these two workers at every end of their daily shift is taken as Php111 for the backhoe operator and Php42 for the backhoe spotter. For work-life balance, you always make sure that there's only eight-working-hours per day with no overtimes and no work during Sundays for all your workers. Note that the total cost does not include your…
Please round to the nearest One (i.e., 1). PLEASE DO NOT USE COMMA(S) ON YOUR ANSWER!!! A proposed embankment fill requires 7500 ft3 of compacted soil. The void ratio of the compacted fill is specified as 0,6. Four borrow pits are available as below, which list the respective void ratios of the soil and the cost per cubic feet for moving the soil to the proposed construction site. Make the necessary calculations to determine the total cost for each pit. Assume the specific gravity of soil solids, Gs to be the same at all pits. 1. Calculate the volume of solid (Vs) = ft3 Borrow Pit A: void ratio = 1.11 and the unit cost = $ 6 /ft3 2. Calculate the total cost to pay to Pit A = Borrow Pit B: void ratio = 0.93 and the unit cost = $7 /ft3 3. Calculate the total cost to pay to Pit B = Borrow Pit C: void ratio = 0.75 and the unit cost = $ 11 /ft3 4. Calculate the total cost to pay to Pit C = Borrow Pit D: void ratio = 0.73 and the unit cost = $8 /ft3 5. Calculate the total cost to pay to Pit…
An approach road for a bridge needs 60000 m3 of soil compacted to a void ratio of 0.7. There are two borrow pits A and B from where the required soil can be taken and transported to the site. The borrow pit A has void ratio 0.85 and borrow pit B has void ratio 0.95. If the cost of excavation of soiland transportation is Rs. 20/10 m3for area A and Rs. 22/10 m3for area B, which of the borrow area is more economical? G=2.67