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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 is pre-stressed concrete made?
Pre-stressed concrete is made by using,
- high strength steel bars(tendons).
- normal concrete(>M25)
- sheaths for cable duct.
- anchors.
- jacks.
== == I really wonder how concrete pumps work, liquid (fluid) concrete has a big viscosity, how the pump overcome this big viscosity. I witnessed many times every couple seconds maybe 4-5 seconds the machine emits a loud thump. I think that sound come from pnomatic part of the machine. If anyone know how is it working, I will be glad to hear it, I wish Merry Christmas to all.
What personlality characteristics should a person have for civil engineering?
Civil engineers need to have knowledge of:
- civil engineering and surveying methods
- relevant legislation such as the Resource Management Act, the New Zealand Building Code, by-laws and town planning regulations
- building materials, and how they work.
- skilled at analysing and interpreting information
- practical and logical, with good problem-solving skills
- safety-conscious
- good at planning and organising
- creative and innovative, with good design skills
- able to work well under pressure
- able to work independently and in a team
How you find number of cement bag in one cubic meter?
quantity of cement for M20 in one cubic meter
cement=1440 kg/m3
sand=1700 kg/m3
aggregate= 1600 kg/m3
Lets solve for M20 i.e, 1:1.5:3
1 bag of cement = 50 kg =34.7 litres
=35 litres
i.e, 0.035 m3
(item) (w/c ratio)(water) (cement)(sand)(aggregate)
volume(0.42)(21ltr)(0.035)(0.0525)(0.105)
voids - (0) (0) (0 60%) (40%) (45%)
solidvolume (-) (0.021) (0.014) (0.0315) (0.05775) *sum=0.124
Thus 50 kg of cement gives 0.124 m3 of concrete for M20 at 0.42 w/c ratio.
Hence,
cement required =0.035/0.124 =0.28 m3 i.e, 0.28*1440=403kg
sand required= 0.0525/0.124 =0.42 m3 i.e, 0.42*1700 = 714 kg
similarly aggregate required = 1360 kg
water required = 169 litre
Check: 403+714+1360 = 2477 i.e, density of concrete =2477kg/m3
*NOTE: The quantity of cement, sand, aggregate & water varies with the w/c ratio and the density of materials.
How do you describe professional strength?
You can describe your strengths by talking about areas in which you excel. Your strengths and abilities are the areas in which you are able to beat other people in.
what will be hapened if soundness and fineness more or less percentage presence in cement.
What type of bridge is the peace bridge?
The Peace Bridge is an arch bridge consisting of five arched spans under the road and one hill over it at the end near Fort Erie, Ontario. The "hill" is a curve on the side of the roadway that has bars evenly on it. The bridge was originally made for one roadway and a trolley passage way.
OTHER FACTS:
connects Fort Erie, Ontario to Buffalo, New York
(DO NOT use information on the Bridge of Peace. It is different.)
crosses the Niagra River
Now is like a freeway of the Niagra River.(NEAR LAKE ONTARIO)
For more information, look up Where is the Peace Bridge here and search results. There should be one with a lot of writing.
Also go to ThePeaceBridge.com and search facts. Click on the third thing, Peace Bridge Facts. It will give you plenty of information
Thank you for using this info!
What are the concrete mix additives for fast curing?
You could add lime putty. But the best solution would be to get a cement that sets in the amount of time you need, a 'slow setting cement'.
What alloy is a penny covered in?
Current pennies (since 1982) are copper-plated zinc, so the answer is it's covered in copper. The penny is 2.5% copper, and 97.5% zinc. See the related links for a history of penny composition over the years.
What are the strengths and weaknesses of a cantilever bridge?
Advantages of cantilevers -Building out from each end enables construction to be done with little disruption to navigation below. The span can be greater than that of a simple beam, because a beam can be added to the cantilever arms. Cantilever bridges are very common over roads. Because the beam is resting simply on the arms, thermal expansion and ground movement are fairly simple to sustain. Cantilever arms are very rigid, because of their depth.
Disadvantages of cantilevers - Like beams, they maintain their shape by the opposition of large tensile and compressive forces, as well as shear, and are therefore relatively massive. Truss construction is used in the larger examples to reduce the weight.How much does a bag of cement cost in Africa?
In Ethiopia it costs around 15USD due to the soaring inflation(2nd to Zimbabwe) and the monopoly of the market by the government.
How do you estimate rcc roof slab?
In order to estimate rcc roof slab you must measure the roof and calculate its area. Then you must contact a professional to see how much slab will be needed.
What is the difference between ultimate tensile stress and ultimate shear stress?
Tensile Strength for a Bolt is determined by applying a Force along it long axis. Shear Strength for a Bolt is determined by applying a Force across its diameter, as it would be loaded in a lug joint. Tensile strength is strength in tension when pulling force is applied. And shear strength is strength against cutting force which is known as shear force.
