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It's an arch.

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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

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Slump check does not measure strength. It measures workability. Workability is the ease with which concrete can be placed in position.

Correct as far as it goes! Slump refers to workability however it is also, all telling as to the water content of the mix. The more water, the easier it will work! Problem becomes, too much water will increase the porosity making the concrete weak and susceptible to early degradation because contaminates are able to enter and commence corrosion of embedded steel.

A concrete that is easy to work that has a high water content [ more than .40 ] is known for shrinkage cracking due to rapid evaporation of the high water content. These cracks caused by rapid loss of water decrease compressive strength and invite early corrosion. This type of concrete also experiences, curling and ASR as well as efflorescence in a very short time period.

Strength is a function of correct hydration, slow internal curing and careful design of a mix for the intended service criteria and not a whole lot to do with slump!

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With trusses you can obtain high strength of the bridge using rather thin and simple (i.e. cheap) elements. A drawback is that the required height of the side of the bridge rises with the span of the bridge, so trusses become less effective for larger spans compared to the cable bridges. Railway bridges have to sustain higher load than road bridges (trains are heavier), so trusses are an efficient design to increase strength.

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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.

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The idea came up in 1802, construction began in 1988, and it was opened in 1994.

Does that answer your question?

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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.

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

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Well, as far as I know, the beam bridge is inefficient compared to other bridges. Single piece beam bridges made from wood or any other easily bent material deflects.

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Goren bridge counting system

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In this M refer to Maximum compressive strength and 20 refer that concrete that with stand upto 20KN compressive strength.

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If I under stand your question correctly, you are asking a technical question : What is CRS bar?

CRS is Corrosion Resistant Steel reinforcement bars used in Reinforced Cement Concrete. This is not as good as Stainless steel, but better than ordinary Reinforcement bars and is manufactured by some manufacturers like Tata Steel (in India) by giving some surface chemical treatment to the bars.

Trust this answers your question.

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a key stone

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Xerxes used and bridge called the "Pontoon" bridge which is a colum of boats tied together side by side to get across the Hellespont (Dardanelles).

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suspention

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A cable suspension bridge is a kind of bridge hung from cables.

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Type your answer here.. The outer columns of any bridge or culvert is called Abutment .There is two abutments in one bridge and inner columns of bridge is called piers.

Hence there is more piers in one bridges but there is just two Abutments in one columns .

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Manhattan is 13.4 miles (21.6 kilometers) long and 2.3 miles (3.7 kilometers) wide at its widest point.

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like it an awesome bridge

ANS 2 - It's called 'cantilever' because of the way it was built. Nothing to do with 'how it works' - It spans a gap just like any other bridge.

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There is a competition between the plants for light,water and soil nutrients and the harvesting of one crop component can damage the others.