Questions
Combine the following aggregates in the right proportions to produce a blend with the given target...

Combine the following aggregates in the right proportions to produce a blend with the given target gradation.

Sieve size (mm)

CA7 % Passing

Washed Sand % Passing

Dry Sand & Passing

% Passing Target

19.00

100

100

100

100.0

12.50

98.8

100

100

100.0

9.50

62.1

100

100

93.0

4.75

2.1

98.1

100

62.0

2.36

0

81

99

45.0

1.18

0

69.9

80.7

35.0

0.60

0

50.6

59.9

25.0

0.30

0

20.7

40

15.0

0.150

0

5.1

24.2

9.0

0.075

0

1.9

17.2

4.0

In: Civil Engineering

A capped pile group consisting a rectangular grid of 7 by 3 spanning a total length...

A capped pile group consisting a rectangular grid of 7 by 3 spanning a total length of, 7.1 m in length. Piles are of size 400 mm diameter and spaced at 1.8 m interval. The soil profile at the site consists of 2.5 m of sand followed by clay soil below. Drive Method construction method would be used. Field and laboratory data on the soil profile indicates top layer shear strength of N = 25. Average and strength for bottom layer are Cu = 265 kPa and Cu = 290 kPa. Adhesion factor between soil and pile is 0.9. Would you recommend using the piles as a group or singles?

Part A: Show your working for the following

Pile Group Design

  1. Tip of base Area Ab (m2)=
  2. Base Perimeter P (m) =
  3. Ultimate bearing capacity qf =
  4. Tipt resistance (kN) =
  5. Layer 1 Shaft Resistance (kN) =
  6. Layer 2 Shaft Resistance (kN) =
  7. Ultimate Load Qf (kN) =

Part B: Show your working for the following

Single Pile Design

  1. Ultimate bearing capacity qf (kPa) =
  2. Tipt resistance (kN) =
  3. Layer 1 Shaft resistance (kN) =
  4. Layer 2 Shaft resistance (kN) =
  5. Ultimate Load Qf (kN) =
  6. Pile group efficiency (%) =
  7. Spacing criteria satisfied? (Yes/No)
  8. Use Piles as (Single/Group) =

In: Civil Engineering

what is the bed shear stress in hydrolics please explanation

what is the bed shear stress in hydrolics please explanation

In: Civil Engineering

A new waste treatment plant has been planned to replace an existing small aging plant for...

A new waste treatment plant has been planned to replace an existing small aging plant for your home town. Discuss the MOEs for (i)the overall system, (ii)each phase of the overall system development,and (iii)the operations phase of any of the plant’s processes.

In: Civil Engineering

foundation give me some information about pile resting on rock and pile in general

foundation
give me some information about pile resting on rock and pile in general

In: Civil Engineering

Bonus (10%) Explain your understanding of effective Stress concepts. Why effective stress is considered the most...

  1. Bonus (10%) Explain your understanding of effective Stress concepts. Why effective stress is considered the most important concept in geotechnical engineering including but not limited to slope engineering, design of earth structures and foundation engineering, etc.?  How did you make the best understanding and application of effective stress to soil engineering? (Note: You have calculated them in your homework jobs assignment and have been applying them in settlement analysis as in the tests).

In: Civil Engineering

QUESTION 18 What kind of curve is used in stream gauging to relate water surface to...

QUESTION 18

What kind of curve is used in stream gauging to relate water surface to discharge?

flood frequency curve

rating curve

depth-duration-frequency curve

intensity-duration-frequency curve

QUESTION 19

What kind of curve results from the statistical analysis of annual peak discharge date from a stream gauge?

flood frequency curve

rating curve

depth-duration-frequency curve

intensity-duration-frequency curve

QUESTION 20

What might the HEC-SSP computer program be used for?

Evaluating USGS Regional Regression Equations easily.

Performing statistical analysis of stream gauge data.

Estimating discharge by the Rational Method.

None of the above.

In: Civil Engineering

Select the lightest W-section for bending, Cb=1 MD = 60 k-ft ML = 40 k-ft Fy=...

Select the lightest W-section for bending,

Cb=1

MD = 60 k-ft

ML = 40 k-ft

Fy= 50 ksi

Lb=10ft

In: Civil Engineering

Q6: A cantilever beam having span ‘L’ m was subjected to a uniformly distributed load of...

Q6: A cantilever beam having span ‘L’ m was subjected to a uniformly distributed load of
magnitude 8 kN/m for a distance of ‘0.6 L’ from the free end and two concentrated loads one of
magnitude 15 kN at a distance ‘0.25 L’ m from the free end while the other of magnitude ‘22’ kN at
a distance ‘0.6 L’ m from the free end respectively. It was observed that the maximum bending
moment acting on the beam is equal to (-369 kNm). Suggest a suitable span for the beam based on
the loading condition. How it will change the reaction at the fixed support? What happens to the
shear force and bending moment values at the fixed support, free end and at the center of the
beam? By plotting bending moment and shear force diagram for the beam briefly conclude the
relationship between the values for shear force and bending moment

In: Civil Engineering

Analyze a response to an mishap or incident that involved critical infrastructure and discuss the coordination...

Analyze a response to an mishap or incident that involved critical infrastructure and discuss the coordination & cooperation between local/state/federal/ territorial/or tribal (as applicable)

In: Civil Engineering

Discuss and explain three negotiation techniques used in civil works design process, three client feedback techniques...

Discuss and explain three negotiation techniques used in civil works design process, three client feedback techniques used in civil works design process?

In: Civil Engineering

What are the practical applications of numerical methods. Give all and explain briefly each.

What are the practical applications of numerical methods. Give all and explain briefly each.

In: Civil Engineering

a simply supported beam with a uniform distrivuted load of W compute its deflection at midspan...

a simply supported beam with a uniform distrivuted load of W compute its deflection at midspan and L/4. Draw the deformed structure.

use L=8meters
W=8

In: Civil Engineering

Justify the reasons for saving the materials during the construction of vertical curves in highway ,with...

Justify the reasons for saving the materials during the construction of vertical curves in highway ,with the
component elements of vertical curves . Also Give the necsssity of providing the component parts of vertical
curve

In: Civil Engineering

Consider a typical settling tank of 10 m diameter and 10 m height. Inlet pipe is...

Consider a typical settling tank of 10 m diameter and 10 m height. Inlet pipe is approximately 2 m deep from the top of the tank. Perform following preliminary calculations. a. For a water-sand flowrate of 1500 m 3 /hr with 1000 ppm of sand, calculate sand particle size than can be settled in the tank. (Water: density = 1000 kg/m3 , viscosity = 1 cP; Sand: density = 2500 kg/m3 ) (6-marks) b. Consider settling of different sizes (50, 100, 200, 300 µm), calculate required tank size for settling of each particle size at a constant inlet flow rate of 1500 m3 /hr. (4-marks) c. Now consider settling of 50 µm size particles in the tank with diameter of 10 m and height of 10 m, calculate inlet flow rate required, (2-marks) d. For fine particles ( 50 µm), if tank size required to operate at 1500 m3 /hr is very large, suggest design modification to settle the fine particles. (4-marks)

In: Civil Engineering