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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 definition of structure in civil engineering?

Draycott and BullmenA define structure as:

"an organised combination of connected parts designed to carry loads and provide adequate rigidity."

HuntB in his text book defines structure as:

"the load-carrying part of all natural and man-made forms. It is the part which enables them to stand under their own weight and under the worst conditions of externally applied force."

Bibliography:
A Draycott, T. and Bullmen, P. (2009). Structural Elements Design Manual - Working with Eurocodes. Second Edition, Elsevier Ltd, Oxford.
B Hunt, T. (2003). Tony Hunt's Structures Notebook. Second Edition, Architectural Press, Oxford.

How old is Catherine in a view from the bridge?

17 she is 81 now. I know beause i went to elementay school with her. P S 226 Alfred Mason School ( he was principal) WE started in 1933 and graduated in 1941.

When is civil engineers day?

engineers day is celebrated on 15th of september of year in remembrance of our great indian civil engineer "MOKSHAGUNDAM VISVESWARAYYA"...

proud to be an CIVIL ENGINEER.....

How much slope per foot is needed for a sink drain pipe?

1/4 " per Foot minimum. At least this is what I get out of "Code Check", ISBN # 1-56158-409-6. There is a lot to plumbing on how pipes are sized, vented and connected. This book is worth getting-I found it on E-bay for less than $10.00.

What is a piling mat?

A Piling mat is the base or road way which the piling rig will travel on. the design of the piling mat is required to resist the forces from the piling rig during travelling and piling. A piling matt should be constructed of suitable inert material (i.e. not tennis balls).

Purpose of hip bracing in steel towers please answer it in detail as much as you can?

1. for support of bracing

2. reduce the torsion effect.

3.reduce the slenderness ration

Regard

Ravi

What would offer the best protection against a water shortage?

An underground aquifer would provide the best protection against a water shortage caused by drought.

How does point loading affect beam sizing versus uniform loading with point load in center of beam?

The moment of a beam is twice that for central load vs uniform load for a simple support beam; hence it needs twice the section modulus for sizing; for fixed ends the moment is 50% higher for central load vs uniform load

What is horton sphere?

Hortonsphere is a spherical pressure vessel used to storage compressed gases in liquid+gas stage (Hydrocarbons, Fuel gases etc.). The name "Hortonsphere" is a trademark registered by Chicago Bridge & Iron Company (CBI). "Horton" is in honor to Horace Ebenezer Horton who has funded the CBI company. The first hortonsphere was built in Port Arthur, Texas, in 1923.

You can find more history info in CBI.com

How are accuracy and precision alike?

"Precision" is high when you get the SAME answer every time. Accuracy is high, when you get the CORRECT answer. You can hit a target in the same place everytime which is very HIGH precision; however, if that place is not the "Bulls Eye", your accuracy is lousy.

How much coarse aggregate is in one cubic meter of concrete?

It depends on the required grade of concrete, you need to know the particular grade.

The three grades specify the ratios of Cement : Stone : Sand.

M15 = M150 = 1 : 2 : 4

M20 = M200 = 1 : 1.5 : 3

M25 = M250 = 1 : 1 : 2

As you can see there is always two parts sand to one part stone. Higher grades have more cement. So the ratio of stone to the whole is 2:7, 3:11, and 1:4. The percentages are 28.6%, 27.3%, and 25.0%.

Effective length of a beam?

the efffective length of a beam is the length along the beam at which the beam will fail when a load is acting upon it. This effective length is usually near the centre of the beam as that is where the stresses are the greatest. For example a fat chick jumping up and down on the beam would reduce the effective length dramatically as the loads are semi-constant but ginormous.

How do you install a precast concrete wheel stop?

Concrete wheel stops are typically pinned into the paving using 18" long 3/4" diameter rebar.

What is building drawing?

Most construction workers create a "blueprint" in order to plan how to construct the building using mathematics and precise sketching. However, many sketch artists also use math to draw buildings by measuring each side perfectly and using perspective to make the drawing in 3-D format.

Can I have a picture of the famous bridge in Istanbul?

just go to wikipedia.com and look for "Bosphorus Bridge" (that's what its realy called)

What is QST rebar?

QST rebars:The acronym 'QST' stands for 'Quenched & Self Tempered' reinforcement steel bars.

In hot rolling mills the steel bar is passed through a high pressure water quenching system whereby only the peripheral temperature is drastically reduced while the core remains largely unaffected. On leaving the specially designed quenching system, the core heat tempers the peripheral martensite that was formed during quenching. This results in a rebar with a soft core and a uniform hardened tempered martensite periphery - a rebar with high yield strength but with extremely good ductility. Such rebars are ideal for use in high hazard seismic areas.

These bars are produced in bar rolling mills by use of the globally proven and accepted THERMEX Quenching System and Technology of M/s HSE Germany.

In the Indian Region comprising India, Nepal, Bhutan, Bangladesh, Myanmar, Pakistan and Sri Lanka, M/s H&K Rolling Mill Engineers Pvt. Ltd., Mumbai (H&K India) have been given perpetual exclusive rights by HSE Germany to Licence, sell, market, install and commission the unique THERMEX Quenching Systems. As on 1 April 2013, H&K India has received orders for nearly 200 Thermex Systems to be set up in rolling mills - of which about 29 were under excecution. The installed capacity of Thermex QST rebars in India alone is over 14 million tonnes (65% market share). Each Thermex Licensee in Indian Region is subject to strict quarterly audit. Qualified QST engineers visit each Licensee to ensure that the rebar properties are as per the strict standards laid down by HSE Germany and H&K India besides meeting the Standrards of the country.

The Thermex 500 QST rebar meets most global standards and codes and is widely accepted by leading users of rebars because of the uniform properties obtained from the various Thermex Licensees.

In India, the registered trade mark/name THERMEX is owned by H&K India as per permission given by HSE Germany.

Unfortunately, in India, these QST rebars are incorrectly referred to as 'TMT' bars. 'TMT' is an acronym for Thermo-Mechanically Treatment even though no mechanical treatment is involved in the process. This has lead to a number of improper 'TMT' rebars being sold in India with non-uniform tempered martensite periphery at the rebar cross-section - encouraged by this non-uniformity "not being a ground for rejection" as per latest rebar code IS:1786-2008!

For further information you may contact R. K. Markan at handk.india@gmail.com

What is the meaning of a blue land surveyors flag?

If the flag was placed by Utiility personnel responding to a "One-call" locate request, the blue flag indicates a buried water line. You see these marked when a contractor calls the "Call before you dig number" a couple of days prior to excavating. This is required by law in each state to reduce the likelihood of damaging underground utilities when excavating. The standard color code used by almost all utility companies for painting & flags is: White - "Here is the area I plan on excavating!" Blue - water line Red -electicity Yellow -natural gas Green -sewer Orange -telephone and/or fiberoptic line If the blue flagging was a fuzzy blue marker nailed to the top of a wood surveyor's stake, then it probably serves to indicate the top of the grade at which the engineer wants the earthmoving equipment to place fill dirt. These are called "blue-top" stakes. edit: I was always taught that a "blue-top" was a stake that the surveyor did not want disturbed (as opposed to other temporary stakes that might be moved, taken out, destroyed by site activities). In fact, my surveying instructor joked that he always carried a blue-top with him when hiking. If he got lost, he'd pound it in to the ground and then wait a few minutes and follow out the heavy equipment that came in to knock down the blue-top stake.

How has technology been used to address issues related to sewage?

The Roman Empire built large systems of waterworks to both supply water and remove sewage from their cities, unfortunately Roman sewers usually just emptied into the nearest river polluting it.

It was not until the middle to late 1800s that Europe again created similar systems for handling sewage and not until the early 1900s that the addition of sewage treatment plants became common to minimize the pollution of the rivers the sewage was being dumped into.