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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
Who are the most famous bridge designers?
That's a very controversial question. -Everybody may have different answers.
My choices are Thomas Telford and John A. Roebling.
What is the effect of hydration on strength of a concrete?
Excess water (over hydration) causes weak concrete. The water in concrete is there to start a chemical process which results in the hardening process. The excess water is not used in the chemical process and results in a weakened concrete.
How do you calculate cement quantity in concrete in M20?
Usually for a design mix as per Indian Standards when the mix proportions are arrived for M25,the total cement consumption will be around 400 kg.From that the number of cement bags will be 8 numbers for 1 cum
What is the weight of 20mm diameter steel bar per meter?
=D^((D^2/162) L)
D^2 = Diameter of the rod
L = Length of the rod
How to make ultra high performance concrete?
silica fume and quartz powder is added to make the concrete more denser.
fine aggregates fill the voids between coarse aggegates, cement fill the voids between fine aggregate, silica fume fills the voids between cement and quartz powder fills the voids in between silica fumes
A drop beam is a structural beam that is placed underneath the structrual member or members it is supporting, as opposed to a flush beam, which is placed in-line with the members it is supporting.
For a visual explanation, see the image here:
http://www.benedictdesign.com/floorframing.jpg
The limit state method is advantageous because all the limit states are checked to ensure that they will survive future conditions such as structural stress. The limit state method ensures that the structures can withstand a lot of pressure and remain durable.
Does the investigation show about the shear strength of different types of paper?
There have been many different studies and investigations on the strength of different types of paper. The shear strength, or how hard it is to cut with scissors, is typically involved in these experiments and is well documented.
16 m m steel rod of 12 meters weight?
16 m m steel rod weight per meter = 1.58
16 m m steel rod of 12metres weights = 12 * 1.58 = 18.96 kg
What is the difference between flexible and rigid pavements?
Flexible pavement:
Are those pavements which reflect the deformation of subgrade and the subsequent layers to the surface.
Rigid pavement:
The rigid characteristic of the pavement are associated with rigidity or flexural strength or slab action so the load is distributed over a wide area of subgrade soil.
What is a draw bridge used for?
Many, but not all, castles are surrounded by a moat - a ditch filled with water. At the entrance to the castle there would be a bridge crossing the moat, and if this bridge was capable of being raised or otherwise "withdrawn", it was a draw bridge.
When will futminna conduct their screening exam for Direct Entry candidates?
when will 2007/2008 admission list will be out
How do you calculate the compression strength of paper corrugated box?
Corrugated Board - Ring Crush Test : Ring Crush is a traditional test of linerboard and corrugating medium strength. Ring crush measures compression resistance, and this compression strength is considered to relate to the eventual compression strength of combined board made from the component. Linerboard called high strength or high performance linerboard is board that is able to achieve a specified minimum ring crush at basis weights that are lower than traditional basis weights. Corrugated Board - Concora Crush Test : The Concora Crush Tester performs a series of tests to determine the rigidity and crush resistance of corrugated material. It is used in conjunction with the Concora Liner Tester. The first test measures the flat crushing resistance of a laboratory-fluted corrugated material. The second test determines the edgewise strength, parallel to the flutes, of a short column of single-, double-, or triple-wall corrugated board. The third test evaluates the ability of corrugated material to contribute to the compression strength of a corrugated box by measuring the edgewise compression strength of a laboratory-fluted strip of corrugated material in a direction parallel to the fluted tips. Corrugated Board - Flat Crush Strength : The flat crush test is a measure of the resistance of the flutes in corrugated board to a crushing force applied to the surface of the board under prescribed conditions. Flat crush is a measure of the flute rigidity of corrugated board. A high flat crush value indicates a combination of good flute formation and at least adequate strength medium. Low flat crush may indicate a number of conditions including low strength medium, leaning flutes and crushed flutes.
From: http://www.thaicorrugated.com/knowledge.php?cid=30
What is the standard size of concrete cube taken for compressive strength test?
It depends on the intended use, ranging from 25N/mm2 for concrete in a dry internal environment say an office floor slab. Up to 50N/mm2 for a large reinforced concrete arch dam.
When was the Sydney Harbour Bridge built?
The Sydney Harbour Bridge is significant for being the largest steel arch bridge in the world, though not the longest, with the top of the bridge standing 134 metres above the harbour. At 48.8 m wide, it is the widest bridge in the world (as of 2004). Construction of the bridge began in 1924, and took 1400 men eight years to build at a cost of £4.2 million. Sixteen lives were lost during its construction, while up to 800 families living in the path of the proposed Bridge path were relocated and their homes demolished when construction started.
It is also significant for how it was constructed. The arch of the Sydney Harbour Bridge was built in two halves cantilevering from each shore and tying each half back by steel cables that were anchored into U-shaped tunnels excavated into the sandstone rock. Construction of the two halves of the arch began late in 1928, and the two halves were properly joined around 10pm on 19 August 1930.
The Sydney Harbour Bridge provided a vital link for the city of Sydney across the harbour. Before it was built, the only way to travel between the southern side of the harbour, where the city centre is, and the residential north, was by ferry, or by taking a circuitous, 20 kilometre road route involving five bridge crossings. The Sydney Harbour Bridge is also significant because it is where the 28 May 2000 People's Walk for Reconciliation took place. The walk began at North Sydney station and finished at Darling Harbour, and involved some 250,000 people walking across Sydney's Harbour Bridge to show their support of the process of Reconciliation between Aboriginal Australians and white Australians.
Why is water moving through a hose a wave?
What is 1 metric ton of granite in cubic meter?
Its heavy as hell old boy, trust me ive shovelled it meself
Why is fracture stress less than ultimate tensile strength?
Fracture stress is only less than ultimate tensile strength in an engineering stress-strain diagram. This is because the material will experience a maximum stress before it undergoes necking. After necking, stress will decrease again until the material snaps.
1 bar equals how many psi and Pa?
1 bar = 100000 Pa
1psi = 6890 Pa
approx 14.5psi to the bar
Precisely,
1 bar =14.5037738 psi
psi = pounds per square inch
Will asphalt bond to concrete?
They have different modulus of elasticity. This would cause ces in thermal expansion and therefore fracturing of both materials.
What bridge can hold the most weight?
Tires with a 'Load Index' rating of 119 can carry 3,000 pounds each. This is the last set of numbers in your tire designation
