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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
How can you apply displacement controlled load with eccentricity on RC columns working inside ansys?
Use a enforced displacement boundary condition. Use a lot of substeps and force/moment reaction probes to know when you're at the load(s) you want. A free body diagram should tell you that.
What is real formula to find out weight of steel bars when dia and length is given?
Use the formula for a cylinder to find out the volume. Then multiply the volume by the density of steel (about 7900 kg/m3 - but it may vary slightly depending on the type of steel).
i want IS codes 13382:1992 and 9523:2000
What is the tensile strength of a can?
conductor that can withstand tension force before failing i.e., zebra conductor can withstand 13290 kg.
You can quote tensile strength only as [force / unit of cross-sectional area]. The above example is useful only if it a specific material (it looks like a trade-name for something) made in only one size.
A tubular truss is a truss that has struts and chords that are composed of cylindrical tubes or pipes. They are used for large constructions including factories, shopping malls, and industry worksheds.
What is the formula for calculating how much concrete you need in a column?
You need the dimensions of the column to calculate the volume. The formula would need to include the three dimensions in some form.
What is the mix proportion of cold mix asphalt?
Mix equal amount of CSS-1 emulsified asphalt with water at 30 degrees Celsius and after 15 minutes spray at 0.2 l/m2 at the surface prepared.
Why was the Fourth Road Bridge built?
The forth road was built so that people and goods could cross the forth faster than waiting on the trains which run at set times as the only fast route across the forth at the time was kinkarden bridge which takes a longer journey to get from Edinburgh to fife and viceversa, there is a new bridge due to be built but I don't know when.
Calculate the length of steel you are going to use the building and muliply the length with unit weight of the steel.
ex: 12 m 25mm steel weight is
12 x 3.85 =46.2 kg
3.85 kg/m is the unit weight of 25mm bar
How many methods can enable construction of pile foundations and how?
You can use hammer, press or vibrationdrivers. The most common are hammer and vibrationdrivers, which pound on or vibrate the pile to sink it into the ground. Where noise or vibration would be a no-no, pressdrivers can be employed.
Hammer drivers can be operated mechanically, hydraulically or pneumatically. In all types of hammer driver, the ram is raised in a slide and allowed to drop on the head of the pile. Repeat until the pile is at the required depth. Make sure you are wearing your ear protectors if you're nearby. Hammer driving can also have a detrimental effect on nearby buildings, as the seismic waves generated are powerful. Typically the ground around the driver will jump a few inches with each blow.
(There is a method in which the ram is constructed to form a single cylinder diesel engine but I'm unfamiliar with this technique. Most of the pile drivers I've seen were hydraulically raised hammer or mechanical vibration types.)
Vibration drivers operate on a different principle. Usually there is a hydraulic arm and a motor driving an eccentric cam or a shaft which is weighted to put it out of balance; the vibration causes the earth to assume liquid-like properties and the pile slowly glides in under the pressure of the pile driver arm. This is nowhere near as noisy as hammer driving. Unfortunately the powerful seismic vibration can have a bad effect on nearby buildings and can be quite unpleasant for nearby humans.
Press drivers use (usually) hydraulic brute force to push the pile in; doing it like this requires Big Science but has the advantage of being relatively quiet and kind to nearby foundations and people.
For driving smaller pilings or for shoring trenches, the bucket of a digger can be used to good effect. Just raise it up and bring it down hard.
It depends on the moisture content of the soil, the acidity of the soil as well as other factors. "But practically, the answer is forever."
A micro pile is a pile with a small diameter (Approx. 100-400mm) and therefore cannot be installed to as great a depth as larger diameter piles.
Crushed marble stone fine aggregate in concrete?
Crushed marble stone has a low absorption rate hence less water is required which means better strength. Also the marble typically has a denser specific gravity.
What is the steam on the streets of New York City?
New York's famous steam seen billowing out of various manholes and sewer grates is the excess from an elaborate underground steam system that buildings - both residential and commercial - can make use of for heating. And since it's Manhattan, of course, it isn't free, but is a paid utility. This steam system is part New York's infrastructure that is continuously being up-dated, though sometimes not quickly enough.
From Wikipedia:
"On July 18, 2007, a steam explosion sent a geyser of hot steam up in a 40-story-high shower of mud and flying debris that rained down on the crowded streets of Midtown Manhattan. It was caused by the failure of a 24-inch underground steam pipe nstalled in 1924 near Grand Central Station. The towering cloud of billowing steam rose higher than the nearby 1,047-foot (319 m)-tall Chrysler Building and left a crater about 35 feet (10 m) wide and 15 feet (4 m) deep. The escaping steam shook nearby office buildings, causing many occupants to immediately evacuate. A 51-year-old New Jersey woman, who worked a block from the site, died of a heart attack suffered while fleeing the disaster area. 45 people were injured,with two injured critically. The most seriously injured victims were a 23-year-old man from Brooklyn who was scalded over 80 percent of his body by the 400 °F (204 °C) steam and had to be put in a medically-induced coma, and his passenger, a 30-year-old mother of two, who was being driven back to Brooklyn after her car broke down. A witness reported that the tow truck was lifted 12 feet (4 m) by the escaping steam, higher than a nearby city bus."
How was the Millau Bridge deck moved into position?
The deck sections were constructed at one end of the bridge, then rolled across the completed decks to each new pylon, sometimes requiring temporary support towers. Given the height of the viaduct (up to 890 feet above ground), it would have been impractical to lift them into place.
What is Variation order in construction?
A variation order is a 'change' which the Architect may be issued to make to the drawings, such as putting in a new window. The Architect will then inform the builders of the variation.
Can you pour concrete to a steel column?
Yes, you can pour concrete around a steel column, typically as part of a foundation or structural support system. It's important to ensure proper bonding and integration between the steel and the concrete, often achieved by cleaning the steel surface and using a bonding agent if necessary. Reinforcement, such as steel rebar, may also be used to enhance the strength and stability of the concrete around the column. Proper curing of the concrete is essential for achieving optimal strength and durability.
What does permeability depend on?
Permeability depends on membrane solubility and the presence of specific integral transport proteins.
Other factors such as pressure, concentration, and temperature of the molecules or solutes on either side, as well as the size of the molecules can also affect permeability.
The degassing temperature of cement during BET analysis typically ranges from 150°C to 300°C. This temperature is essential for removing moisture and adsorbed gases from the sample, ensuring accurate measurement of the specific surface area. Proper degassing helps to achieve a stable baseline in the nitrogen adsorption isotherm, which is critical for reliable BET calculations.
