Civil Engineering

The abbreviation Fe stands for Ferrous material ie iron from which the reinforcement steel bars are manufactured. The reinforcement steel bars used in RCC (Reinforced Cement Concrete) are designated as Fe415 or Fe500 depending on their Yield Strength. (The numbers 415 and 500 tell about this Yield Strength in N/mm2 the bars are designed and manufactured to have.) As per IS : 1786 Yield Stress (also known as 0.2% proof stress) of Fe 500 is 500 N/mm2. So, Fe500 steel means the reinforcement steel rods...

Initially people lived in the open or under the canopies of trees or in caves or in any sheltering hole they could find comfort suiting to the prevailing weather conditions. As the population multiplied they felt the need for creating shelters using broad leaves, tree branches, stones, soil, etc. Gradually they developed building many varieties of structures as their needs increased. ...

1 bar is 14.50377 PSI, so 2.8 bars is 40.610 PSI.

It's an arch.

I am using a product called Stop Salt. I have been using this product for the last six months, I am amazed! It produces outstanding mortar, the pointing up is brilliant and it cuts out the efflorescence that we all hate as Bricklayers. I hope this can be of some help to you, try it. If the intent is to "Prevent" efflorescence a penetrating sealer that migrates into a concrete based material, either concrete or cement based mortars should be considered. You...

most are prevailing wage jobs and greatly varies from state to state,im in the union so its a big difference . anywhere from 30 to 50 dollars an hour,again depending on what part of the country you are working ...

Vibration is the harmonic reaction of a structure to a force load.

They have different modulus of elasticity. This would cause ces in thermal expansion and therefore fracturing of both materials. ...

Their both the same, really, just two different names for sand with clay in it, however one might have more clay in one (sandy clay) than the other (clayey sand), but only by miniscule amounts. ...

Sieve analysis allows the determination of the distribution of particles sizes in granular materials. Since many separation processes and reactions depend on the amount of surface area relative to mass and that ratio increases as particle size decreases, knowing the distribution of sizes can be very important. Particle size distribution can also be important when using slurries to move particulates from one place to another. ...

Nothing! Sociologists forcefully enforces it on engineers

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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...

You can add citric acid and sugar to stop hydration. But then the concrete is unusable and you need to throw it away. ...

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. ...

The swing bridge has very long spans, and behaves better in earthquakes then heavy rigid bridges. ANS 2 -Swing bridges can allow passage of very wide and high ships in a waterway. ...

Concrete reinforcer increases the strength of a concrete. It is designed to bond, strengthen, prime and seal concrete cement, plaster, stucco and masonry. It can be used to permanently bond new concrete to old concrete, or other surfaces such as wood, hardboard, brick, ceramic tile, concrete block and metal. It is used to prevent cement and group from cracking. Attach new concrete to old concrete and other surfaces. It can be used inside and outside of the houses Support for concrete to strong...

lap length in tension including anchorage value of hooks in flexural tension shall be greater of development length or 30 times dia of bar. In compression, its equal to development length. In general, 50 times dia is provided. ...

What is Polymer concrete? It is also known as resin concrete because synthetic resins are used instead of cement in its manufacturing. Density of cement concrete Density of normal concrete is in the order of about 2400 kg per cubic metre. The density of light-weight concrete will be less than 1900 kg per cubic metre. To call the concrete, as high density concrete, it must have unit weight ranging from about 3360 kg per cubic metre to 3840 kg per cubic metre, which is...

The Great Kersten Blunder. (Kersten was the programer that made the error). The Vigor space probe was sent towards Venus, but because of a computer programing error installed on it, a convertion from millimeters to inches was incorrect. It divided by 24.5 instead of 25.4. This error caused it to miss Venus completely and was sent hurling into space. Over 2 billion dollars of technology was lost because of one simple error. The Mars Climate Orbiter had a problem when trajectory programming teams...

Live load Both are the same Live load is all the live loads which can be consider as variable load. Roof live load This is limited to few categories. man who climbed on to the roof can be consider as roof live load. ...

Truss bridges are lighter than beam girder bridges. They take up more height but are strong and carry loadd in tension and compression rather than bending. ...

Unit Weights of TOR steel bars 8mm dia : 0.395 kg/m 10mm dia : 0.617 kg/m 12mm dia : 0.888 kg/m 16mm dia : 1.579 kg/m 20mm dia : 2.467 kg/m 25mm dia : 3.855 kg/m These are standard unit weights in India based on the density of steel @ 7850 kg/m3 ...

The mixes of grades M5 M10, M15, M20 and M25 correspond approximately to the mix proportions (1:4:8), (1:3:6), (1:2:4), (1:1.5:3) and (1:1:2) respectively. ...

the bridge having a deck from where truck n all vehicles pass by having a pratt which bridge is having... ...