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Civil Engineering
Civil Engineering is a profession of designing and executing structural works that serve the general public, like houses, buildings, roads, etc. A Civil Engineer is an engineer trained in the design and construction of public works, such as bridges or dams, and other large facilities.
4,921 Questions
What is the max length of RC cantilever beams?
1.50 meter from the support is the max. safe length cantilever beam
method-related charges
What is the ideal drop per foot on an 8 inch diameter city sewer line?
Same as any other .25 per foot
Each metal when placed into an electrolyte, water, seawater, soil or any other good electrolyte, has an electric potential. This potential is different for every metal.
The galvanic series is a list of this potential arranged from the most "active",lower potential to the most "noble", higher potential.
The terms "noble" and "active" means that when two metal are connected the most "active", with the lower potential will corrode, while the metal with the higher potential, the "noble" material will not corrode.
The galvanic series, the potentials, are different in different electrolyte.
What is Variation order in construction project?
A "variation order" is most often when some extra work gets added to a project after the contract has been signed.
For instance, I contract to paint your house, and we agree on a price. Then you ask me to paint the shed too.
That's extra work and materials that weren't in the original agreement, so it will be added to the contract and the final cost.
It could also be additional work needed for hidden problems that weren't apparent at the time of the contract.
Like maybe I contracted to replace your windows and when I get the old window out, it turns out that the framework is rotted and has to be replaced. That work wasn't part of the original agreement and price, so I'll ask you to sign a variation order that states you're going to pay me for the additional work.
What distances do modern arch bridges typically span?
Modern arch bridges are held up by trusses. Typically these bridges span from two hundred feet up to eight hundred feet, or 4 meters. Arch bridges are smaller and span more narrow bodies of water.
Who is building the Berbice Bridge?
The Berbice River Bridge is being built by a consortium of Guyanese private businesses and Guyana's National Insurance Scheme. It is believed that a significant component of the investment funds is sourced both directly and indirectly from the National Insurance Scheme. The consortium is named Berbice Bridge Company Incorporated (BBCI) with head offices in the Capital, Georgetown. BBCI's operation is under a concession arrangement with the Government of Guyana; BBCI would fund the 1.57km long pontoon floating bridge across the Berbice River between the D'Edward Village on the west side and Crab Island on the east side of the river. The Government of Guyana is funding the approach roads, almost 4km long, to each end of the bridge. In addition, BBCI is funding all anciliary investments including toll stations, an office and maintenance facility.
Under th concession agrement, BBCI would operate the bridge as a toll service and recover financial returns over a 21 year period, when the investment would be handed over to the Government.
What are the dimensions of the Eitai Bridge?
Completed in 1926 - length 185m - height 22m - Tôkyô City
interfacing
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Its the process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
How much does 10mm toughened glass weigh in kilo newton per square meter?
25 kg/m2 is a density of a toughened glass with 10 mm thick. If you want convert that measure into kN, then multiply by the factor "g" that is gravity (9.81 m/s2) and you get 25 x 9.81 = 245.25 kN/m2.
What is a overhead bridge crane?
Gantry cranes are a type of crane built atop a gantry, which is a structure used to straddle an object or workspace. They are also called portal cranes, the "portal" being the empty space straddled by the gantry.
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The terms gantry crane and overhead crane are often used interchangeably, as both types of crane straddle their workload. The usual distinction drawn between the two is that with gantry cranes, the entire structure is usually wheeled. By contrast, the supporting structure of an overhead crane is fixed in location, often in the form of the walls or ceiling of a building, to which is attached a movable hoist running overhead along a rail or beam. Further confusing the issue is that gantry cranes may also incorporate a movable beam-mounted hoist in addition to the entire structure being wheeled, and some overhead cranes are suspended from a freestanding gantry.
The Tilleman bridge (Mason St) was completed in 1973, The Nitschke bridge ( Main St / Dousman st ) was completed in 1998 , and the Walnut St bridge was completed in 1987.
Definition of Charles river bridge vs Warren Bridge?
Dispute between, two Massachusetts companies over the right to build a bridge across the Charles river between Boston and Cambridge. The first company would have a charter from the state to operate a toll bridge and be a monopoly . While the other company applied to legislature for authorization to construct another bridge that would be toll free, and reduce the value of the first company's charter. Andrew Jackson opposed and so did Roger Taney since it would restrict classes to improve their economic well being and be unfair
Is there such a word as referencing?
referencing (′ref·rən·siŋ)
(engineering) The process of measuring the horizontal (or slope) distances and directions from a survey station to nearby landmarks, reference marks, and other permanent objects which can be used in the recovery or relocation of the station.
What are the advantages of wien bridge oscillator?
RC phase shift oscillator is used to generate frequency in audio range and it is a fixed audio frequency oscillator where as wien bridge oscillator is a variable audio frequency oscillator for high frequency oscillations it is better to design wide band amplifier with LC network
You must be referring to a "truss bridge". A truss bridge is a bridge that has straight connectors. These connectors are stressed from 2 kinds of stressors; tension and compression. It is one of the oldest and simplest bridges.
Amount of cement used in the Hoover Dam?
5,000,000 barrels of cement were used to make the 4,300,000 cubic yards of concrete required.
What is the advantages of using plum concrete?
Also known as Cyclopean Concrete, this is a variety of concrete consisting of large sized stones(Plums) with interstices filled with concrete. Used mostly in mass concrete works like concrete gravity dams
What is the formula used to determine the minimum wall thickness after bending a boiler pipe?
See ASME B31.3 for low pressure boilers. For power boilers use ASME B31.1
Specifically Paragraph 304 where the following formula is found: t= PD/ 2[(SEW/I)+PY] Where: I= [4(R/D)+1]/[4(R/D)+2] for the extrados of the bend and
I= [4(R/D)-1]/[4(R/D)-2] for the intrados of the bend
t= minimum wall thickness required at design pressure
P= design pressure required
D= Pipe diameter (outer diameter)
S= allowable stress at temperature (20,000 psi for A269 TP304 SS at 300 degrees Fahrenheit)
E= quality factor (0.85 for fusion welded ). See B31.3 for other values.
W= Weld joint strength reduction factor (1.00 for non welded) see B31.3 for specific values - if you do not have welds in your bend then use 1.00
Y= 0.4 for Ferritic Steels at 900 degrees Fahrenheit or lower. See B31.3 for other values.
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