Earth-whose in situ weight is 112 lb/ef, whose loose weight is 95 lb/cf, and whose compacted weight is 120 lb/cf-is placed in a fill at the rate of 250 cy/hr, measured as compacted earth. The thickness of the compacted layers is 6 in. A compactor with a roller drum width of 84 in. is used to compact the material at a speed of 2.5 mph. Assume a 55-min hour operating efficiency. Determine the number of rollers required to provide the necessary compaction rate if eight drum passes are specified for each layer of earth.

Earth-whose in situ weight is 112 lb/ef, whose loose weight is 95 lb/cf, and whose compacted weight is 120 lb/cf-is placed in a fill at the rate of 250 cy/hr, measured as compacted earth. The thickness of the compacted layers is 6 in. A compactor with a roller drum width of 84 in. is used to compact the material at a speed of 2.5 mph. Assume a 55-min hour operating efficiency. Determine the number of rollers required to provide the necessary compaction rate if eight drum passes are specified for each layer of earth.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Weight-volume Relationships And Plasticity

Section: Chapter Questions

Problem 3.1P

See similar textbooks

Related questions

Q: The 4-mm-diameter cable BC is made of a steel with E = 200 GPa. Knowing that the maximum stress in…

A: tan θ=ACABtan θ=6.58.5θ=37.405°BC=AC2+AB2 =6.52+8.52 =10.700 mDiameter of cable, d=12…

Q: A reinforced concrete rectangular beam in cared to support an ultimate uniform load of Nu = 35.5 /m…

A: From question following data is observed ultimate load(wu)= 35.5kN/m span(l)=2.5m fc=24 Mpa b=d/2

Q: The composition of a certain brand of cement is given (C3S = 16.0%, C2S = 38.0%, C3A-11.0% and C4AF…

Q: Show that g(x) = 2x² + 3 − 3ª has a real zero using the Intermediate Value Theorem. -

A: First show that given function is continues then use the Intermediate Value Theorem to show a real…

Q: sketch the shear, moment, and qualitative curve diagram for each member of the structure.

A: Given: Required: Shear, moment and qualitative curve diagram

Q: Design a two way slab using the Coefficient Method considering an interior panel (Case 2). The slab…

Q: A foundry has a fixed daily cost of Rs. 50,000 whenever it operates and a variable cost of Rs. 800…

A: Given, Fixed daily cost= Rs. 50000 Variable cost = 800Q,

Q: What is the peak discharge from the grounds of the Miami Park during a 10-year storm? Assume that…

Q: The composition of a certain brand of cement is given (C3S = 53.0%, C2S = 18.0%, C3A=12.0% and C4AF…

A: Given data, C3S = 53% C2S = 18 % C3A = 12 % C4AF = 8 % To determine the type of the cement.

Q: The diameter of the shaft, shown below, is 60 mm and it is made of A-36 steel (E = 200 GPa and G =…

A: Given : E = 200 GPa and G = 75 GPa Dia of shaft = 60 mm Determine the absolute max. torsional…

Q: Question- A soil has liquid limit of 35, plastic limit of 20 and moisture content 25%. What will be…

A: Given- Liquid Limit LL=35. Plastic limit PL=20, Water content w=25%, It is needed to find the…

Q: Calculate the deflection at point B using virtual work method. W = 5.9 kN/m, P = 12.4 kN, a = 1.5m,…

Q: Show that g(x) = 2x² + 3-3 has a real zero using the Intermediate Value Theorem.

A: We have to solve given Questions.

Q: A soil has specific gravity of its solid equal to 3 Mass density of water is 1000 kg/m³. Considering…

A: Given data, Specific gravity of soil solid = 3 Mass density of water = 1000kg/m³ Moisture content =…

Q: Show all necessary solutions and box all final answers. 1. Given: f(x) = tan¹ (2x) x sin(3x4 + 8x³)'…

A: Removeable discontinuity means the two-sided limit exist and are equal but the value of the function…

Q: The slope correction for a length of 30 m along a gradient of 1 in 20, is A 3.75 cm

A: Given data: For 20 m the difference of elevation = 1 m so, for length, l =30 m The difference of…

Q: What is the cost

A: Given data, Daily cost of a foundary=Rs 50000Variable cost= Rs 800 QWhere,Q= daily production in…

Q: IDETIFY THE TENSION DEVELOPED IN 3 CABLES REQUIRED TO SUPPORT THE TRAFFIC LIGHT WITH THE MASS OF…

Q: Q-Water is flowing a critical depth at a section in a A shaped channe with side lopes of 0.5 H:1V.…

Q: The rate of flow of water through a pipe of length 2000 m and diameter 1 m is 2 m³/s. At the end of…

A: Given Length of pipe L=2000 m, Diameter of pipe D=1 m, Discharge Q=2 m3/s, Diameter of nozzle d=300…

Q: Draw the shear and moment diagrams for the shaft. + add vertical line off 300 N delete 100 N/m 1.5 m…

Q: Draw the moment diagram by part With respect to point E for segment CF and with respect to point A…

Q: he project FIM's history?

A: The purpose of FIM project subsidies is to advance motorcycle culture globally in line with the…

Q: A vertical curve is needed to join to tangents; G₁=0% and G₂=-5%. Assuming a level grade (0%) for…

A: Vertical curves are formed when two different gradients meet at a point. If convexity of curve is…

Q: The plan area of a reservoir is 1 km2. The water level in the reservoir is observed to decline by 20…

Q: 2] A 50 m. tape weighing 1.055kg has a standard pull of 8 kg. The tape's cross- sectional area and…

A: Normal tension can be defined as the pull when applied in a tape freely suspended in air eliminates…

Q: 8 kips B w = 2.4 kips/ft bolted joint C 62' + C D -16- 28

A: Note: Hi! Thank you for the question, As per the honour code, we are allowed to answer three…

Q: QUESTION 3 To measure the stopping sight distance, what is the height (ft) of the driver's eye?

Q: The water is flowing with a velocity of 1.5 m/s in a pipe of length 2500 m and of diameter 500 mm.…

A: Using formula

Q: are In a fixed beam two internal hinge are provided as shown in figure, the reactive moment A and B…

Q: 3 m 15 kN 20 kN/m 15 m

Q: Is there any simpler way to calculate this?

Q: Problem A valve is provided at the end of a cast iron pipe of diameter 150 mm and of thickness 10…

A: Using formula for sudden pressure rise in pipe

Q: The diameter of the shaft, shown below, is 60 mm and it is made of A-36 steel (E = 200 GPa and G =…

A: Using equilibrium equation and compatibility equation

Q: the value of strain

A: ###Find the Value of Strain ###

Q: Example 17.22. Find out the number of turns a hauling rope must be wound round a rotating capstan in…

A: T2=250N W=3MN To find number of turns

Q: Component Component Component Ax is Ay is By is Component By is Component Exis Component Ey is kN-…

A: Given Data: The load at point D is P=2480 N. To Determine: The components: Ax, Ay, Bx,ByEx, and…

Q: Calculate the deflection at C in terms of El. Express your answer in two decimal places and do not…

Q: coefficient of volume compressibility

A: Given. Determine the co-efficient of volume compressibility ?Where, Following data observed…

Q: 3. Using arithmetic mean and isohyetal methods, estimate the areal rainfall for the catchment shown…

Q: Find the distance between the points p1and P2. P1 =(-1, 0); P2 =(2, 4)

A: Given:- P1 =(-1, 0); P2 =(2, 4) To find:- distance between points P1 and P2

Q: Q-Water is flowing a critical depth at a section in a A shaped channel with side lopes of 0.5 H:1V.…

A: To find discharge and specific energy

Q: 15 kips 6' B- 12'

A: Given data : Determinate beam with EI = constant Find : Vertical deflection and rotation at C Using…

Q: 5.) A horizontal pipe gradually reduces from 250 mm to 150 mm diameter section, the pressures are 90…

Q: The overhang beam is subjected to the uniform distributed load having an intensity of t 41 kN/m.…

A: Given : w = 41 kn/m Determine max. shear stress developed in beam ?

Q: Sulfate- resisting Cement contains Lower percentage of ----------- and --- which considers as the…

Q: 2. do + 2 dt 10+ 21 Q=4.

A: Using integrating factor method

Q: 20 KN/m Rah A Rav 1. Solve for the reactions. 9m B 60 KN/m Rb

A: Using equilibrium equations

Q: During the transformation of C3A, the strength of the cement paste lead to decrease in at the late…

A: Tricalcium aluminate (C3A) is one of the main constituents of Portland cement. Even though it…

Q: A canal has a flow rate ranging between 0.1-0.2 m3/sec through a v-notch weir. Determine the max…

Concept explainers

Basic Concepts of Water Resource Sustainability

The majority of the earth's surface is composed of water. The water which is available for use by the living beings on earth comes from various water resources. Water resources are the naturally occurring water bodies that are intended to be used by the living beings on earth for drinking and other uses. Water resources provide 3% as freshwater, 97% as saltwater, two-thirds of which are frozen as glaciers and ices. The remaining water which generally doesn't remain frozen are the water resources found underground, precisely known as groundwater. The majority of these water sources act as non-convention sources of power generation, like in hydropower stations.

Question

Earth-whose in situ weight is 112 lb/cf, whose loose weight is 95 lb/cf,
and whose compacted weight is 120 lb/cf-is placed in a fill at the rate of
250 cy/hr, measured as compacted earth. The thickness of the compacted
layers is 6 in. A compactor with a roller drum width of 84 in. is used
to compact the material at a speed of 2.5 mph. Assume a 55-min hour
operating efficiency. Determine the number of rollers required to provide
the necessary compaction rate if eight drum passes are specified for each
layer of earth.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Step 10

Trending now

This is a popular solution!

Step by step

Solved in 10 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Basic concepts of water resources sustainability

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

The back fill material for a vibroflotation project has the following grain sizes. D10 D20 D50 D25 D75 0.11mm 0.20mm 1.3mm 0.60 1.60 35. Determine the suitability number. a. 19.3 b. 18.0 С. 17.8 d. 20.4 36. Calculate the sorting coefficient. а. 1.581 b. 2.798 C. 1.633 d. 3.546
Most of the compaction in the field is conducted with rollers. Which one of the followings rollers consider for light soil compacting O Vibro tampers O Pneumatic rubber-tired roller O Sheep foot roller O Smooth wheel roller
A measure of density of a compacted fills as part of the specification requirement was performed by digging a hole in the soil, weighing the extracted soil and measuring the volume of the hole. The soil (moist) weighed 770 grams. 420 g of the dried soil was poured into a vessel in a very loose state. Its volume was subsequently determined to be 280 cm. The same 410 grams of dried soil was then vibrated and tamped to a volume of 220 cm. If the specific gravity of the soil sample is 2.7, compute the void ratio in the densest state. Select one: a. 0.37 b. 0.45 C. 0.73 d. 0.54 The saturated unit weight of a soll is 19.49 KN/m°, and the specific gravity of the soil solids is 2.7. What is the void ratio of the soil? Select one: a. 0.91 b. 0.72 c. 0.57 d. 0.83
Given a compacted aggregates with a size of 2", given the mass of aggregate plus measure equivalent to 10500g, mass of the measure is 350g and the factor of the measure is equivalent to 290 /cu. m. Calculate the Bulk density of the Sample? a. 35000 kg/m^3 b. 2903.5 kg/m^3 c. 2943.5 kg/m^3 d. 3270.07 kg/m^3
A compaction mould has the empty mass of 5000 g and the volume of 945 ml. When the compaction mould is full of the completely dry sand in its loosest state, the total mass is 6500 g and when it is full of the completely dry sand in its densest state, the total mass is 7245 g. If the water content of the sand when it is fully saturated at its natural state is 23%, calculate the relative density of the sand. (Assume that G,-2.70.)
A sample o f soi l compacte d accordin g t o a standar d Proctor test ha s a unit weight of 130.9 lb/ft 3 at 100 % compaction and at optimum water content o f 14% . What is the dryunit weight? If the voids become fille d with water what would be the saturated unit weight?Assume Gs = 2.67.
A truck delivers 20,000 kg of HMA to the paver. The paver is placing a 4.3 m wide 40 mm thick mat that has a density of 2305 kg/m ³ Calculate the 1. distance the paver should travel. three trucks weighing 14,566kg, 15230kg, and 14021kg deliver HMA to the paver. The mat is 4.5m wide and 55mm thick with a density of 2250kg/m ³ If the starting station is 8+915, at which station (to the meter) should the paver be at after all 3 trucks have dumped? 2. 3. A paving job is nearing completion, and the foreman needs to let the plant know how much HMA is needed to complete. The calculations are based from station 1+330, and the finish station is 1+343. The mat is 3.7m wide x 55mm deep. The density at laydown is 2350kg/m ³ Calculate the mass required to finish the job in kg.
11. The lower the surface area, the lower the propensity for soil particles to stick together in a coherent mass, or as discrete aggregates. O True O False
Estimate particle size of ilmenite (sg 2x sand =5.4) and anthracite (s.g. 2/3 of sand = 1.8) which have settling velocity of silica sand 0.80 mm in diameter (s.g. 2.7).
Based on the compaction curve shown in Figure A (below), choose the appropriate combination for each parameter Av = (i) Av = (ii) Av = 10% (iii) Sr = (iv) O i = 5%; ii = 12%; iii = OMC; iv = 95% O i = 7%; ii = 12%; iii = MDD; iv = 100% %3D O i = 0%; ii = 6%; iii = MDD; iv = 100% %3D %3D O i = 0%; ii = 7%; iii = OMC; iv = 95% %3D
A sample from the field has an in-situ void ratio of 0.680 and were tested in the laboratory and found that the specific gravity is 2.550. The sample is compacted to a void ratio of 0.480 and the relative density is determined to be 58.120%. It was then oven-dried and compacted again, but this time to its densest possible state and the recorded mass and the volume are 425.870 grams and 205.370 cubic centimeters. Determine the following: maximum void ratio, relative density of the soil , volume of the soil after first compaction
In the construction of a highway, 10000 m3 of filling material with a void ratio of 0.75 is taken from the borrow pit. This material is laid in 20 cm thickness on the 10 m wide highway with a void ratio of 0.45. How many roads can be made with this material?