list and explain briefly five disposal technologies for hazardous waste
In: Civil Engineering
why, how and where project management can fit into the broadly defined area of environment sector. You may focus on specific environmental issues if you so wish. These may include but not be limited to, water quality, air quality, food protection, pollution abatement, remediation technologies, etc
In: Civil Engineering
A water tower supplies water to a city through a pipe with 1 ft
diameter. The pipe is 0.5 miles long and is made of commercial
steel pipe. Over the years, the supply line lost head and engineers
are considering the replacement of 94 percent of the pipe length
with a larger diameter pipe (same type). The peak water demand is
3.53 ft3/sec. How much pressure head could be gained by this
strategy?
In: Civil Engineering
In: Civil Engineering
From a 2-hr test on a confined aquifer at 400 gpm, the following drawdowns were measured on a number of wells. Determine the transmissivity and storage coefficient using the Theis approach.
Well number |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
Distance (ft) |
29 |
35 |
44 |
60 |
85 |
100 |
163 |
Drawdown (ft) |
14.9 |
13.8 |
12.7 |
11.7 |
10.1 |
9.6 |
7 |
In: Civil Engineering
In: Civil Engineering
After reading the definition of aleatory and epistemic uncertainties, make a list of four uncertainties that you had to deal with that you would classify as primarily aleatory. Then do the same thing for four that are epistemic. At least some of these should be related to professional issues:
Aleatory:
1.
2.
3.
4.
Epistemic
1.
2.
3.
4.
In: Civil Engineering
Describe the four major phases of the ISO LCA Standard:
Name and describe in a few sentences each of the four major phases found in the ISO LCA standard.
In: Civil Engineering
Your client has asked you to assist with a four storey steel frame building. Take ground floor as first floor. The frame is to be made of four columns line and three beam lines in the front elevation. Column height between floor to be 8m and the span of beam between columns is 9m. There are four bays of frames in the side elevation. Roof is made out of trusses. As part of your planning you are requested to prepare the following. a. Roughly Sketch the frame b. Indicate different loads you will consider and the combination of loads. c. Show the load path. Of the vertical and Horizontal load being carried from the roof to the soil d. Give examples of sub frames you will use to analyse elements to get values of B.M, S.F and Axial force. e. Discuss the method of analysis you will adapt and why? f. Kind of connections and bracing you will use and why? g. Discuss the steps you will take to meet the requirements as regard to Fire resistance, fatigue failure and corrosion protection. I need a better solution than the one in your site. Also please do not mention lacing and battern system. Can I please have clear answer with explanation ?
In: Civil Engineering
In: Civil Engineering
What are the pitfalls/problems of Tianjin Eco-City
In: Civil Engineering
The cross-section dimensions of the 6061-T6 aluminum bar are 0.512 in x 0.248 in.
Attach the lead wires of the gages to the strain indicator as a quarter bridge circuit. (Note: the black and white lead wires are the common leads.)
Enter the gage factor (GF=2.11) into the strain indicator.
Record the specimen number (1, 2, or 3).
Balance the strain indicator and note the zero readings. Load the specimen according to the table below and record the strain values in the table below.
IMPORTANT: DO NOT EXCEED A MAXIMUM PRESURE OF 2500 lbs.
Specimen |
Axial Gage |
Transverse Gage |
||
0 |
0 |
0 |
||
500 |
406 |
-133 |
||
1000 |
815 |
-267 |
||
1500 |
1216 |
-396 |
||
2000 |
1656 |
-538 |
||
2500 |
2040 |
-661 |
||
0 |
42 |
-22 |
IMPORTANT: DO NOT EXCEED AXIAL FORCE OF 2500 lbs.
For each strain gage, construct a graph with load on the y-axis and net gage readings on the x -axis. Indicate if the gage readings are linear with force.
At each load level:
Determine the average value of Poisson’s ratio and the modulus of elasticity. For 6061-T6, find accepted values of Poisson’s ratio, modulus of elasticity, and the yield stress.
Poisson’s ratio from Experiment |
Axial Stress from Force/Area |
Modulus of Elasticity from Experiment |
Material Properties (List Source for Accepted Values) |
||
Pounds |
avg= |
avg= |
|||
0 |
E= |
||||
500 |
ν= |
||||
1000 |
Yield Stress= |
||||
1500 |
|||||
2000 |
|||||
2500 |
|||||
0 |
In: Civil Engineering
Find the diameter required in this problem,show computations and conversions What diameter of pipe is required to carry 10 gpm of gasoline at a velocity of 7 ft/s? (1 gal = 7.48 ft3)
In: Civil Engineering
In: Civil Engineering
Briefly explain how America came to be an EMPIRE by 1900. Be sure to include the role the exportation of Manifest Destiny, technology, innovation, capital and risk played an important role in this pursuit.
In: Civil Engineering