What are the purposes for building dams in semi-arid regions?
Discy Latest Questions
What is the difference between Water Content and Lod?
What are the best economical pavement design method for road construction?
What is an Outcrop in the Rocks? What is its significance in civil engineering?
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Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulderRead more
Rock outcrops are defined as visible exposures of bedrock or other geologic formations at the surface of the Earth. Rock outcrops take many different forms within the Park, ranging from the massive granite boulders of Old Rag Mountain, to the sheer cliffs of Little Stony Man, and the jumbled boulder fields of Blackrock.
Most civil engineering projects involve some excavation of soils and rocks, or involve loading the Earth by building on it. In some cases, the excavated rocks may be used as constructional material, and in others, rocks may form a major part of the finished product, such as a motorway cutting or the site f or a reservoir. The feasibility, the planning and design, the construction and costing, and the safety of a project may depend critically on the geological conditions where the construction will take place. This is especially the case in extended ‘greenfield’ sites, where the area affected by the project stretches for kilometres, across comparatively undeveloped ground. Examples include the Channel Tunnel project and the construction of motorways. In a section of the M9 motorway linking Edinburgh and Stirling that crosses abandoned oil-shale workings, realignment of the road, on the advice of government geologists, led to a substantial saving. In modest projects, or in those involving the redevelopment of a limited site, the demands on the geological knowledge of the engineer or the need for geological advice will be less, but are never negligible. Site investigation by boring and by testing samples may be an adequate preliminary to construction in such cases.
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Can a random rubble masonry retaining wall withstand the high impact of water during floods, if the walls are built on both sides of a canal. And how can we check if the design of the wall was sufficient?
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You start asking about ‘High Impact’ from flood waters. Generally flood waters is not High Impact unless a dam collapses or you have an extreme flash flood. Usually if you are at a canal you will have fast water eroding the base of the wall or pushing the rubble masonry wall as the water goes througRead more
You start asking about ‘High Impact’ from flood waters. Generally flood waters is not High Impact unless a dam collapses or you have an extreme flash flood. Usually if you are at a canal you will have fast water eroding the base of the wall or pushing the rubble masonry wall as the water goes through the canals.
To check if the design of the wall is sufficient see if any design calculations were filed with the local municipality or water agency. The calcs should identify the design water speed and height. If no calcs then you need an engineer to review the construction of the wall.
If you can’t afford an engineer first look at the base of the wall. Is there exposed dirt, is erosion already occurring? Look for photos from a few years ago to see if the wall has changed. Check the upstream ends of the walls on both sides. Are they flared out and do they extend below grade into the earth. If the rubble is just on the surface at the upstream then as the fast water rises it will undermine the wall and it will fail one piece at a time.
A random rubble masonry wall can survive a flood if correctly designed but the only way to know for sure is to have another engineer review the wall.
Usually a RR retaining wall is constructed in embankments (above the linings) of canal when the lateral force from the soil behind is considerably high due to various factors. During the floods, this force will exert more pressure. If the slope and base width of the wall is not designed properly, it will fail. Hence the design parameters should include this eventuality. (Max. Lateral pressure with a minimum factor of safety 1.50). Sometimes there is no need for cement mortar and the tiny gaps will be help full to act as weep holes.
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How do I remove a load bearing wall and extend (extension only on one side) the ground floor on a g+1 structure, and what will be the costing of this procedure?
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A floor plan should be provided with sections showing column and beam layout. But it will be better if you hire a contractor.
A floor plan should be provided with sections showing column and beam layout. But it will be better if you hire a contractor.
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How is the career growth of civil engineers?
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would be graduating this year,in May. And like you,I have things like private jobs or PSUs,or MBA or IAS/IES,etc... Presuming that you do not want to opt for higher studies (otherwise you must have been sure by now),I would suggest you to give time to yourself,actually introspect and find out if theRead more
would be graduating this year,in May. And like you,I have things like private jobs or PSUs,or MBA or IAS/IES,etc…
Presuming that you do not want to opt for higher studies (otherwise you must have been sure by now),I would suggest you to give time to yourself,actually introspect and find out if there is something that interests you in the field,if you want a job in the core field?…These are the basic ideas I have-
1. If you money is what you want and you don’t care whether your career grows up or is stalled, PSU is what you are looking for!
Prepare for GATE because PSUs barely do campus recruitment now.(for Civil Engineers)
2. If you want your technical knowledge to be put to test,you want to earn by toiling and learning,go for the private sector.If you don’t know yet,
- Mediocre CTC (about 3.5-5lpa,for trainees)
- Heavy Workload,about 12hrs,6days a week
BUT
- You can expect something really big after 5-6 years of meaningful experience.You can go on a promotion spree or switch jobs with better packages!
- You can also take up MBA/M.Tech during your course as an employee,depending whether you want to manage stuff or toil harder on the technicalities section.
If you doubt it,here’s this for inspiratio
The man behind L&T
(I am sure you must be knowing it!)
how to calculate the rate of spray of prime coat in road construction.
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Tray Test is used to calculate the rate of spread of prime or tack coat. The test uses a 20cm X 20 cm X 3 cm tray placed on the surface to be primed at some intervals in the path of the sprayer/emulsion distributor. They are placed between the wheel's path/tracks. 5 samples are collected for a testRead more
Tray Test is used to calculate the rate of spread of prime or tack coat. The test uses a 20cm X 20 cm X 3 cm tray placed on the surface to be primed at some intervals in the path of the sprayer/emulsion distributor. They are placed between the wheel’s path/tracks.
5 samples are collected for a test and a minimum of 3 tests are conducted for a day of work.
Weight of the emulsion on the tray is calculated by finding the difference in the final and the initial weight of the tray. Weight per unit sq.m or weight per 10 sq.m is obtained and checked with specified limits mentioned in MORT&H Table 500–3 (prime coat) and 500–5 (Tack coat) or other relevant IRC specifications.
Initially before the start of the priming work, a demonstration trial is done based on the following parameters:
- Equipment type for spraying operation
- Size of nozzle
- Pressure at spray bar
- Speed of forward movement of sprayer equipment.
Above values are ascertained and calibrated for a required rate of spray as per the specification by using tray test prior to the start of actual work.
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sanjaypakad
Water content is determined by the Karl Fischer titration method and it consists of only water i.e moisture content. ... Loss on drying (LOD) is determined by heating the sample below its melting point in an oven and it includes all volatile matter including water content and solvents.
Water content is determined by the Karl Fischer titration method and it consists of only water i.e moisture content. … Loss on drying (LOD) is determined by heating the sample below its melting point in an oven and it includes all volatile matter including water content and solvents.
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