Questions
You are conducting a geotechnical analysis on a 3-layer soil system. Layer 1 is a 5-ft...

You are conducting a geotechnical analysis on a 3-layer soil system. Layer 1 is a 5-ft sand with dry unit weight of 100 pcf. Layer 2 is a 6-ft silty sand with a saturated unit weight of 115 pcf. Layer 3 is a 15-ft low plasticity clay with a saturated unit weight of 117 pcf. There is an unknown granular soil below the clay layer. The ground water table is at a depth of 5 ft. A structural footing with dimension 5ft x 5ft is placed on top of the top sand layer. The footing must carry a load of 50,000 lbs. i. Draw a schematic diagram of the layered soil system. Show all details (6) ii. Draw the distribution of effective stresses in the soil (15) iii. Determine the effective stress in the middle of the clay layer (5) iv. At time T ≈0 (i.e. immediately after the structural load is applied), what would be the changes in total stress, pore water pressure and effective stress in the middle of the clay? Assume entire stress due to the footing is transmitted to the clay. (12) v. At time T ≈α, (i.e. long time after construction), what would be the changes in total stress, pore water pressure and effective stress in the middle of the clay? (12) vi. Laboratory consolidation test on the clay soil produced the following graph for the soil. Calculate the consolidation settlement of the clay layer when a foundation is placed on top of layer 1. Make any other necessary assumption. (50) 0.1 1 10 100

In: Civil Engineering

According to conventional wisdom - the primary recurrent salient issues in most states tend to concern...

According to conventional wisdom - the primary recurrent salient issues in most states tend to concern jobs, crime, education and taxes.

To what extent do public opinion poll data in Texas support or challenge the conventional wisdom?

In: Civil Engineering

Identify an example of a water resource engineering application. Then use that example to illustrate the...

Identify an example of a water resource engineering application. Then use that example to illustrate the differences in the concepts of water quantity and water quality. Be as specific as you can.

In: Civil Engineering

6. A certain contaminant was studied in the laboratory by measuring over time the concentration in...

6. A certain contaminant was studied in the laboratory by measuring over time the concentration in a sample placed in a closed container. The values of the observed concentrations are given below. Determine the reaction order and the decay rate for this contaminant.

Time (hrs)

0

1

3.5

6.5

10

Conc (mg/L)

100

80

50

26

10

In: Civil Engineering

Suggest an innovate treatment technology on either (environmental, energy production, optimization of process) ?

Suggest an innovate treatment technology on either (environmental, energy production, optimization of process) ?

In: Civil Engineering

Write the parameters affecting on generation of more energy? Write the main steps to obtain more...

Write the parameters affecting on generation of more energy? Write the main steps to obtain more energy using waterfall simulator.

In: Civil Engineering

Dynamic tests on structures. Task of dynamic testing. Methodology and result assessment of dynamic test

Dynamic tests on structures. Task of dynamic testing. Methodology and result assessment of dynamic test

In: Civil Engineering

Identify three structural concepts to provide a stiff load path for lateral load resistance

Identify three structural concepts to provide a stiff load path for lateral load resistance

In: Civil Engineering

5. If you were sitting at Time Square handing out flyers and after an hour found...

5. If you were sitting at Time Square handing out flyers and after an hour found where all the people with flyers were and connected their points of location, you have created a...

a) streamline

b) pathline

c) streakline

In: Civil Engineering

Use FARS to identify the following and submit in blackboard Pedestrian and Bicyclist fatal crashes in...

Use FARS to identify the following and submit in blackboard
Pedestrian and Bicyclist fatal crashes in Indiana for: Indianapolis and Terre Haute for 2015 to 2017
Factors to Investigate:
•   Age
•   Alcohol Test Results
•   Crash Location
•   First Harmful Event (i.e. cause of crash)
•   Day of Week
•   Time of Day
Map results of Indianapolis and Terre Haute separately
Produce tables of the data query
Write-up:
Describe what you found to be the leading causes of fatalities.

In: Civil Engineering

. A proctor test has been conducted and it was verified that the relative field compaction...

. A proctor test has been conducted and it was verified that the relative field compaction is 96.2%. Can we conclude that the in-situ conditions meet the compaction specifications?

In: Civil Engineering

Briefly discuss the significance of two main factors (list those 2 factors) in strength limit state...

Briefly discuss the significance of two main factors (list those 2 factors) in strength limit state design method used for safety in the context of a real-world structural steel design example.

In: Civil Engineering

List five types of common errors in taping. Select all that apply. Select all that apply....

List five types of common errors in taping. Select all that apply. Select all that apply.

Temperature

Remeasuring

Using hand signals

Tape length

Marking

Plumbing

Tape not level

Recording the results

please do not copy and paste the wrong answer .

In: Civil Engineering

. Write short notes on the following classifications of law: a. Case law b. Civil law...

. Write short notes on the following classifications of law: a. Case law b. Civil law c. Criminal law d. Public law.

In: Civil Engineering

explain step by step, how do you design a mat or raft foundation? when do you...

explain step by step, how do you design a mat or raft foundation? when do you opt for raft foundation?

In: Civil Engineering