Questions
1. What is the difference betw een direct and indirect site characterization methods? 2. Give an...

1. What is the difference betw een direct and indirect site characterization methods? 2. Give an example of direct measurement method? 3. Give an example of indirect measurement method?

In: Civil Engineering

I DOWNVOTE for incorrect answers. Explain the helicoidal flow theory required.

I DOWNVOTE for incorrect answers.
Explain the helicoidal flow theory required.

In: Civil Engineering

1.Explain when you can use hydraulic fracking process in groundwater hydrology? 2.Describe two advantages mud has...

1.Explain when you can use hydraulic fracking process in groundwater hydrology?
2.Describe two advantages mud has over water as a drilling fluid.
3. What are the main benefits of well development?

In: Civil Engineering

1.Describe the four stages to Project Life Cycle. Discuss in your own words the key documents...

1.Describe the four stages to Project Life Cycle. Discuss in your own words the key documents likely to be utilized by the PM for each stage. Provide a template as an example for each one.

In: Civil Engineering

As an Geotechnical Engineer for a company you have been instructed to handle a project to...

  1. As an Geotechnical Engineer for a company you have been instructed to handle a project to develop a new Mall. The project currently in construction stage. During process of pile installation, the contractor notices few problems with the site condition:
  1. Limited area for work space which might have problem to use conversional method for pile installation.
  2. Project site is near with Hospital (contractor must control the sound pollution).

As a consultant you are need to solve these problems and need to suggest (with explanation) suitable method to install the pile.

  1. After complete installation of pile, you are need to suggest method/s to conduct pile test (with explanation).

In: Civil Engineering

bridge components description and painting with some details

bridge components description and painting with some details

In: Civil Engineering

A natural soil slope failed overnight after experiencing several days of rainfall.  The rain continued even after...

A natural soil slope failed overnight after experiencing several days of rainfall.  The rain continued even after the slope failure.  The shape of the failure resembled a spoon (i.e., circular failure).  You are the consulting engineer hired, please answer the following questions:

i.  In order to confirm the stability of the slope prior to the rainfall induced failure (when it was stable), what Shear Strength parameters you will likely use in this calculation? Why?

ii.  In order to explain the slope failure, i.e., for your slope stability model of the slope at failure, what Shear strength parameters will you likely use in this calculation? Why?

In: Civil Engineering

Why zero air void line curve will not intersect the compaction line?

Why zero air void line curve will not intersect the compaction line?

In: Civil Engineering

The image of a point whose elevation is 1,475 ft above datum appears 53.87 mm from...

  1. The image of a point whose elevation is 1,475 ft above datum appears 53.87 mm from the principal point of a vertical photograph taken from a flying height of 6,000 ft above datum. What would this distance from the principal point be if the point were at datum?

  1. Images a, b, and of ground points A, B, and C appear on a vertical photograph taken from a flying height of 8,350 ft above datum. A 6-in-focal length camera was used. Points A. B. and C have elevations of 1.725 ft, 1.640 ft, and 095 ft above datum, respectively. Measured photocoordinates of the images are xa= -371 in, ya= 1.864 in, xb=062 in. yb = 3.183 in, xc=3.704 in, and yc=-3.138 in. Calculate the lengths of the lines AB, BC, and AC and the area within the triangle ABC.

  1. The images of the top and bottom of a utility pole are 5.11 in and 4.93 in, respectively, from the principal point of a vertical photograph. What is the height of the pole if flying height above the base of the pole is 2,850 ft?

  1. An area has an average terrain elevation of 1,200 ft above datum. The highest points in the area are 1,850 ft above datum. If the camera focal plane opening is 9 in square, what flying height above datum is required to limit relief displacement with respect to average terrain elevation to 0.20 in? If the camera focal length is 8in, what is the resulting average scale of the photography?

  1. The datum scale of a vertical photograph taken from 3,000 ft above datum is 1:6,000. The diameter of a cylindrical oil storage tank measures 6.87 mm at the base and 7.01 mm at the top. What is the height of the tank if its base lies at 590 ft above datum?

  1. Assuming that the smallest discernable and measurable relief displacement that is possible on a vertical photo taken from 3,000 ft above ground is 0.5 mm, would it be possible to determine the height of a telephone utility box imaged in the comer of a 9-in-square photo which stands 4 ft high above the ground?

  1. If the answer to Prob.6 is yes, what is the maximum flying height at which it would be possible to discern the relief displacement of the utility box? If the answer is no, at what flying height would the relief displacement of the box be discernable?

PLEASE SOLVE ALL

In: Civil Engineering

Provide cost analysis and decide on the cheapest design concept of a bridge.

Provide cost analysis and decide on the cheapest design concept of a bridge.

In: Civil Engineering

Offer and Acceptance), 7 (Consideration), 10 (Writing) and 13 (Breach of Contract and Remedies). Your written...

  1. Offer and Acceptance), 7 (Consideration), 10 (Writing) and 13 (Breach of Contract and Remedies). Your written answer should be between 1000 and 1200 words. 20 marks

In: Civil Engineering

a) What is the primary difference between the dependent variable of an OLS regression model and...

a) What is the primary difference between the dependent variable of an OLS regression model and a logit model?

b) What is the primary difference between the model results of an OLS regression model and a logit model?

In: Civil Engineering

part 1) A deep excavation (choose all that apply): Needs to consider Lateral Pressures Are possible...

part 1) A deep excavation (choose all that apply):

Needs to consider Lateral Pressures

Are possible only if the soil is cohesive

Must consider the need for dewatering

Can use braces if needed

Requires Engineering Design

part 2)

Some of the important steps/information necessary while planning excavations are (choose all that apply):

Proper monitoring equipment during construction

Soil exploration

Survey of surroundings

Dimension of the Excavation

In: Civil Engineering

A grouted riprap, trapezodial channel (n = 0.025) with a bottom width of 4 meters and...

A grouted riprap, trapezodial channel (n = 0.025) with a bottom width of 4 meters and side slope of m= 1 carries a discharge of 12m3/s on a 0.001 slope. Compute the backwater curve created by a low dam that backs water up to a depth of 2m immediately behind the dam specifically, water depths are required at a critical diversion points that are located at a distance of 188m,423m,748m,1675m, upstream of the dam ( Take normal depth Yn and Yc as 1.66m and 0.92m respectively)

A rectangular concrete (n= 0.020)canal has a slope of 0.0015,is 7m wide,and is carrying 15m3/s. At the upstream end of a broad crested weird, the depth is 3.3m

In: Civil Engineering

A truck will haul an average load of 15 cy, heaped capacity, and loose measure per...

A truck will haul an average load of 15 cy, heaped capacity, and loose measure per load. Use average values of swell factors in Table 7.3 on p. 131 of your textbook to determine the volume of the truck in bank measure when the material is sand, ordinary earth, dense clay, and well-blasted rock.

Then, using an Excel spreadsheet, determine the number of trucks required to move material in the following scenario:

A project requires 40,000 cy of compacted fill that must be completed in 32 working days. The fill material will be hauled to the site in 21 cy loose measure trucks. The cycle time for a truck is 40 min. per trip. The swell factor for the earth is 25% and the shrinkage factor is 10%. Assume 8 hours per day and a 45-min. effective hour. Determine the number of required trucks to complete the project in 32 days.

Deliverable:
Upon completion of this project, you will deliver an excel spreadsheet to include:

  • Tables of all information (data) given in the problem
  • Formulas that reference cells thus creating dynamic formulas that will change if information in the tables changes
  • The final answer highlighted in yellow.

In: Civil Engineering