Questions
Compare the role of aggregates in concrete and bituminuous materials

Compare the role of aggregates in concrete and bituminuous materials

In: Civil Engineering

Please explain these questions in details 1) Describe the technologies used today to measure ocean currents...

Please explain these questions in details

1) Describe the technologies used today to measure ocean currents and salinity/depth? How is in situ, and remotely sensed technologies combined to further the understanding of circulation patterns in the ocean basins?

2) What is coastal armament, and is it a viable and cost-effective method to "protect" coastlines?

In: Civil Engineering

Discuss generally the potential ability for the project to become LEED certified? Also, discuss one specific...

Discuss generally the potential ability for the project to become LEED certified? Also, discuss one specific way to address each of the categories of LEED to allow a warehouse project to improve its LEED standing?

In: Civil Engineering

A trapezoidal channel that has a 15 foot bottom width, Manning’s roughness coefficient of 0.033, bed...

A trapezoidal channel that has a 15 foot bottom width, Manning’s roughness coefficient of 0.033, bed slope of 0.0021 ft/ft, symmetrical side slopes of 4H:1V (s = 4), and conveys 250 cfs. It is dammed up to a depth of 4 feet. How far back upstream will it take for the M1 curve to reach normal depth?


    a.   1,430 ft.


    b.   1,894 ft.


    c.   2,302 ft.


    d.   2,934 ft.


    e.   3,486 ft.


In: Civil Engineering

how Extended Aeration, Oxidation Ditch, Rotating biological contractor can effect environmental -explain 2 reasons for each...

how Extended Aeration, Oxidation Ditch, Rotating biological contractor can effect environmental

-explain 2 reasons for each technology

In: Civil Engineering

I need term paper in optimization of water resources

I need term paper in optimization of water resources

In: Civil Engineering

Write a 2 to 3 page literature review on how is hazardous waste controlled in developing...

Write a 2 to 3 page literature review on how is hazardous waste controlled in developing countries like India , China, Mexico, Uganda?

In: Civil Engineering

Potentially, which models would be used for traffic flow ? provide one example with an mathematical...

Potentially, which models would be used for traffic flow ? provide one example with an mathematical explanation

In: Civil Engineering

Problem 1: Assume the mix is made with Type I cement, with no pozzolans or admixtures,...

Problem 1:
Assume the mix is made with Type I cement, with no pozzolans or admixtures, and that the temperature of concrete at placing is 75°F. The unit weight of concrete is 150 pcf with a slump of 3.75 inches.
Design forms for 13’-8” high wall to be concreted at the rate of 6 ft per hour, internally vibrated.
The forms will be used only once, so short-term loading stresses will apply.
Use form grade plywood sheathing 7/8 in. thick in 5×10-ft sheets, and 5,250-lb coil ties are on hand.
Framing lumber of No. 2 Douglas Fir-Larch is to be purchased as required
Problem 2:
Draw the pressure diagram for a wall form 15 feet tall in which concrete will be placed at a rate R = 10 feet per hour when the temperature is 60oF. Draw the diagram if the wall were only 6 feet tall.

In: Civil Engineering

14.15 Aconcrete-linedtrapezoidalchannelhastobeconstructedtocarryadischargeof500cfs. Design the channel. Assume that the following values were fixed based on the site...

  1. 14.15 Aconcrete-linedtrapezoidalchannelhastobeconstructedtocarryadischargeof500cfs. Design the channel. Assume that the following values were fixed based on the site conditions:

    1. Bed slope = 0.002
    2. n=0.015
    3. Side slope, z = 1 (vertical):1.5 (horizontal) 4. b/y ratio = 2.0

  2. 14.16 DesignthechannelofProblem14.15asamost-hydraulic-efficientchannel(ofsemicircu- lar section).

  3. 14.17 DesignthechannelofProblem14.15asabest-hydraulicrectangularsection.

In: Civil Engineering

A two-lane rural highway, four-leg intersection will have its stop control replaced by a signal control....

A two-lane rural highway, four-leg intersection will have its stop control replaced by a signal control. Compute the expected average total crash frequency (all types, all severities) after the change for the following conditions: 


Expected average crash frequency before change: 23 total crashes/yr
AADT on minor road: 1500 veh/day

AADT on major road: 5000 veh/day 


Please show all work and formulas used. Thanks! Submitting this again this the last person didn't even answer the question at all. Not sure what they were reading.

In: Civil Engineering

The composition of "ordinary" Portland cement is 63.82% CaO, 20.56% SiO 2, 5.50%Al 2O 3, 0.76%K...

The composition of "ordinary" Portland cement is 63.82% CaO, 20.56% SiO 2, 5.50%Al 2O 3, 0.76%K 2O, 0.32% Na 2O, 0.95% other, and 0.52% insoluble. When mixed with water the resulting cement slurry is basic. Identify three bases of Portland cement and the compounds they form when mixed with water.

In: Civil Engineering

What new technologies were important in the history of bridges? Why did the Romans use elevated...

What new technologies were important in the history of bridges?

Why did the Romans use elevated aqueducts instead of pipes to convey their water?

Which of the Grand Challenges for the 21st century do you believe is most important? why? which challenge do you believe to be the least important? why? what challenges do you believe should be added to the list why?

In: Civil Engineering

For the project with the five activities given below, you are required to crash the project...

For the project with the five activities given below, you are required to crash the project duration from its original duration to a final duration of 14 days. Assuming a daily indirect cost of $100, what is the total cost of the project with a duration of 14 days.

For the project with the five activities given below, you are required to crash the project

duration from its original duration to a final duration of 14 days. Assuming a daily

indirect cost of $100,

what is the total cost of the project with a duration of 14 days

.

Duration (days)

Cost ($)

Cost slope

Activity

IPA

Normal

Crash

Normal

Crash

A

-

3

1

2,000

5,000

B

A

5

2

3,000

6,000

C

A

3

2

3,000

5,000

D

A

8

3

3,000

8,000

E

B,C,D

5

3

1,000

2,000

Total Direct Cost before Crashing

Draw a Network Diagram (with the Crashing shown) below:

Compression

Cycle

Activity

Compression

days

Amount

Project

Duration

Direct

Cost

Indirect

Cost

Total

Cost

0

-

-

-

1

In: Civil Engineering

I need case studies for case Asbestos encapsulation please

I need case studies for case Asbestos encapsulation please

In: Civil Engineering