answersLogoWhite

0

🌎

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 importance of setting time of cement?

because when we know the setting time of cement we easily identified that where can we use the cement according to there setting time.

How railway track capacity can be enhanced?

There are numerous ways to enhance track capacity. The simplest being to run longer train consists. Next, more tracks could be built within the existing Right of Way. Alternative, curves and elevation chances can be flattened out to provide higher operating speeds.

What is the difference between bending moment and deflection?

monment is force by distance however the deflection is a displacement of point measured by distance

How do you determine how large the utility supply will need to be in order to support the demands of the service?

When designing applications, you rely on standards. The National Electric Code dictates the size of electrical components, States usually regulate the required sizes for water supplies and wastewater treatment.

If you are trying to determine what the standards should be, then you typically make some assumptions and do some testing to determine what would create a resonably reliable system using standard engineering practices and available technology.

How many tons of fly ash are equal to one cubic meter of fly ash?

1.2 metric tons equals 1 cubic meter of Fly ash (one of the residues of coal combustion).

Definition of mass in engineering mechanics?

Mass is the measurement of inertia, or resistance to change in motion. It is not to be confused with weight, a measurement of the force due to gravity exerted on an object.

For many practical purposes, mass and weight vary numerically by a constant, namely gravitational acceleration. Due to the common misconception of mass and weight being the same thing, units can often get confusing. For example, the English unit for mass is the slug, rather than the pound (a unit of weight). Some unit systems, such as the American Engineering System, take up the convention of making mass and weight numerically equal. In such a case, the units specify whether mass or weight is intended, so you would have pound mass (lbm) and pound weight (lbw). The SI unit for mass is the kilogram (kg), which, like the pound, is commonly and erroneously used as a unit of both mass and weight.

How much does welded wire mesh weight?

That would depend on the wire thickness, and size of mesh.

Briefly explain the difference between the end bearing piles and the friction piles?

4. End-bearing piles. Typical end-bearing piles aredriven through very soft soil, such as a loose silt-bearingstratum underlain by compressible strata. Rememberthis factor when determining the load the piles cansupport safely.5. Friction piles. When a pile is driven into soil offairly uniform consistency and the tip is not seated in ahard layer, the load-carrying capacity of the pile isdeveloped by skin friction. The load is transferred to theadjoining soil by friction between the pile and thesurrounding soil. The load is transferred downward andlaterally to the soil

What is better circular column or rectangular column?

Columns are structural compression members which transmit loads from the upper floors to the lower levels and then to the soil through the foundations. Since columns are compression elements, failure of one column in a critical location can cause the progressive collapse of adjoining floors, and in turn, even the collapse of the entire structure.

Although tied columns are most commonly used because of the lower construction costs, spirally bound circular columns are also used where increased ductility is needed, such as in earthquake zones. The ability of a spirally reinforced column to sustain the maximum load at excessive deformation prevents the complete collapse of the structure before total redistribution of moments and stresses is complete.

Failure in columns could occur as a result of material failure or by loss of lateral structural stability. If a column fails due to material failure, it is classified as a short column, as opposed to the slender column whose failure is by buckling.

The program generates the axial load vs. bending moment interaction diagram of an unconfined circular concrete column, with uniform arrangement of non-prestressed reinforcing bars. The program takes into account the slenderness effects.

How do you describe how surveyors use both absolute and relative locations as part of their jobs?

An absolute reference, usually called a benchmark, is a fixed location on the ground. Frequently, it is confirmed by GPS and other more accurate instruments. A relative location is derived from a benchmark. Many survey document contain only one reference to a benchmark; all other locations are relative to the location of the controlling benchmark.

What is difference between MS rods and TMT bars?

TMT Bars - High strength deformed steel bars used for concrete reinforcement. The surface has many short ribs to allow the concrete to adhere better than if the bars had a smooth surface.

MS Rods - Mild Steel rods are used to construct many things (such as scaffold construction), but are not the best choice for concrete. The surface of the rod is smooth, so it does not allow the concrete to adhere as well as if the surface had a texture.

What are the advantages and disadvantages of compacting concrete using a vibrator?

The main disadvantage of compacting concrete using a cement vibrator is the noise. The advantages of compacting concrete using a cement vibrator is to remove trapped air and excess water which then allows the concrete settle firmly.

What is the shear strength of quartz?

The strength of quartz depends on the flaw size. Typically the strength of quartz is about 8000 psi (55MPa) in tension. If severely flawed it could be as slow as half that value, and if it is stressed in water it could be even lower. If perfect without flaws it will exceed 40,000 psi (275 MPa). I would use about 6000 psi in general and use a large safety factor. Most codes use a safety factor of 5 for glass to be certain in case there are hidden flaws.

In shear I would use the tension value

Why settlement calculations are important for foundation designs?

To prevent your building, roads or any structure from sink. From these calculations, you may get the suitable foundation for the structures base on your budget.

What is the yield strength of Q345B steel?

the yield strength of Q345B is 345MPa for thicknesses <= 16 mm.

325MPa for 16 mm < thickness <= 35 mm.

295MPa for 35 mm < thickness <= 50 mm.

275MPa for 50 mm < thickness <= 100 mm.

Differences between dumpy and tilting level?

in dumpy level the line of sight is perpendicular to vertical axis.But in tilting level the line of sight need not be perpendicular to vertical axis .the instrument is roughly leveled in a tripod stand with respect to bubble tube & thus making the instrument approximately vertical...then it is tilted with a finely pitched tilting screw which tilts the telescope wrt to vertical...it has advantage that due to tilting levelling can be done quickly and accurately!!

Function of trimmer resistor?

The trimmer resistor is a calibration device used to correct (trim) the resistance of some other resistor. An example might be the feedback loop of an op-amp in common mode. If you wanted a gain of two, you might use a resistor divider with a two to one ratio. Resistors have tolerance, however, so the stated value will not be exact. You place a trimmer resistor in series with one of the other resistors, picking the value so that, if the two other resitors were exact, the trimmer is set to midpoint, and that the trimmer's range covers the expected tolerance of the other resistors. Then you calibrate the circuit to the expected gain using the trimmer.