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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 thick is the glass on high-rise buildings?
Depends on several factors.
Location of building (what building code it falls under)
wind patterns
size of the window opening
for large glass openings in a cold/hot climate, 6mm triple glazed is common. overall the unit is about 38mm thick with the glass and air interlayers
RCC that is reinforced cement concrete which is composed of cement(mainly),sand(fine aggregate),metal(coarse aggregate)and water.Which is further more supported by iron which makes it RCC from ordinary cement concrete.
How do you calculate the steel quantity for circular slab?
Assume area of circle= area of square
πd2/4=L2
L=0.88263 x d
Deduct the cover from L from both sides. This will be length of bar
How do you calculate fixed end moment for cantilever beam with uniformly distributed load?
I'm not sure if you're asking for just the equation for the reactions, or how to calculate the FEM of a cantilever via the Moment Distribution method (aka Hardy Cross method), so I'll anser both.
If you assume clockwise moments are negative...
If your cantilevered span has a length "L", and a uniform load "W" acting downward along the entirelength of the span, then the fixed end moment is (W*L2)/8
If the fixed end is to the left, the equation is positive (the load is acting clockwise, so the reacting FEM is counter-clockwise, therefore positive.) If the fixed end is on the right, the equation becomes -(W*L2)/8
If your uniform load W is acting downward, and is acting along length "d" (which is NOT the entire span), its easiest to convert the uniform load W to a point load "P", where P = W*d
Then your FEM = [P*a*b*(2*L-a)]/(2*L2)
where:
L = entire length of span
a = distance P is acting from the fixed end,
b = distance P is acting from the cantilevered end (also, b = L - a)
OR, if W is centered along the span (therefore Pis also centered), then the equation becomes (3*P*L)/16
When going through the distributive process, the cantilevered end will ALWAYS have a final moment of zero. At the fixed point, the cantilevered side has a distribution factor of zero, while the other side has a D.F. of one. So, if you have length ABCD, where A is a cantelever, and B, C and D are assumed fixed, FEMAB = 0, D.F.BA = 0, D.F.BC = 1, and D.F.CB = D.F.CD = D.F.DC = 0.5
So what ends up happening is that the final FEM for the cantilever ("AB") is zero, and the opposite end of the span ("BA") remains as its initial value. The reason for this is when you sum up the reactions at the point (in this case B) supporting the cantilever and flip the sign, the distribution factors tell you to distribute everything to the side of the support opposite the cantilever ( -(FEMBA + FEMBC) is added to FEMBC). So you can go through the Cross Method as normal, but you don't touch AB or BA, and BC is adjusted only the once that I just mentioned (you don't carry over the 1/2 reactions from CB).
What and where is the neutral layer in a beam that supports a load?
The neutral layer is a beam that supports a load is in the region where there is neither stretching nor compression.
Is it tension or compression that strengthens an arch that supports the load?
compression: the keystone in particular is under rather high compression forces.
What is MC-30 cutback asphalt?
Out of three types of cutback asphalt, MC is medium curing type.
Other than MC, there are RC (Rapid Curing) and SC (Slow Curing).
Hume pipe Culvert is a cross drainage work or small bridge used to pass flood water through one or number of Precast RCC Hume pipes laid soil.
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
A looped domain is a series of chromatin fibres that are arranged into a loop. These are arranged into chromosomes. For more help view the related link.
What is reduced level excavation?
The ground which lies between the topsoil and earth's crust is known as the subsoil and comprises particles of weathered rock of various shapes and sizes. It is usually necessary to provide a level surface from which construction may take place, and this level may be lower than the top of the subsoil. In such cases, excavation into the subsoil is required to reduce the level of the ground. The volume of subsoil to be excavated, together with the nature of the material, will determine the type of machine and methods to be used.
What does 5.0 kn per m2 mean in relation to point loads on a floor?
It basically means that the floor can carry a weight of 500 kilos(or about 1000 pounds) for each square meter.
- This is an incorrect approach. The current method is the reason for the steel wastage. The steel saving is left to the hands of Bar Benders and site engineers.
- A scientifically proven system, to save steel in the construction projects is the need of the hour.
- Steel saving starts with the Rebar Detailed engineering. This is also called as Rebar Detailing. A professional Rebar Placing drawing and an optimized Bar Bending schedule (BBS) are the targeted output of the Rebar detailing.
What is mean by Rebar detailing?
Rebar detailing is the arrangement of the reinforcing steel in the the concrete structure.
it shows the details of the shape, size, number or spacing of bars in any rcc structre.
different sections of the structure is taken and the arrangement of the reinforcement is shown in it. the picture below is the detailing of rcc structre
J. C. Bamford, a British manufacturer of heavy industrial and agricultural vehicles; hence JCB can also mean a backhoe digger/excavator in Britain and Europe
See http://en.wikipedia.org/wiki/J._C._Bamford_(person)
What is the meaning of the solid slab?
A solid slab is a reinforced concrete slab which is supported by beams or walls..
What are the importance of pressure bulb?
The Zone in a loaded soil mass bounded by any arbitrary isobar is known as a pressure bulb. The vertical pressure at any point on the surface of the pressure bulb is the same.
