An HSS 16x16x1/2 (A = 28.3 in2, twall = 0.465 in, rx = ry = 6.31 in) with Fy =46 ksi is used for an 18 ft long column with simple end supports (K = 1.0)
a) calculate b/t and classify this element (nonslender element or slender element)
b) calculate KL/r
c) calculate Fcr
d) determine Φc Pn and Pn/Ωc with the AISC equation.
In: Civil Engineering
Topic: Construction
Let us assume that there is a large high school to be built on the East Coast of Florida near the beach. What type of block would be recommended i.e., compressive, fire rating, architecturally pleasing to the public eye? Remember to factor in cost, permanence, maintenance and safety.
In: Civil Engineering
In: Civil Engineering
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 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 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 technology
In: Civil Engineering
In: Civil Engineering
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 explanation
In: Civil Engineering
In: Civil Engineering
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
14.16 DesignthechannelofProblem14.15asamost-hydraulic-efficientchannel(ofsemicircu- lar section).
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. 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 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 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