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Abbas Khan Civil Engineer
Abbas Khan Civil Engineer

Abbas Khan Civil Engineer

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What is the difference between gray water and black water in sewage? How can we differentiate between them in a sewer?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    This answer was edited.
    What is the difference between Gray Water and Black Water in Sewers?

    Difference between Black Water and greywater: Black Water: Blackwater is the best water from bathrooms and toilets that contains faecal matter and urine. Waterproof kitchens and dishwashers are also considered Black Water due to the contamination of pathogens. It is also referred to as she waits forRead more

    Difference between Black Water and greywater:

    Black Water:

    • Blackwater is the best water from bathrooms and toilets that contains faecal matter and urine.
    • Waterproof kitchens and dishwashers are also considered Black Water due to the contamination of pathogens.
    • It is also referred to as she waits for groundwater and can carry diseases and bacteria both of which could be harmful.

    Treatment of blackwater:

    • The biological or chemical treatment and infection are required for treating Black Water.

    Greywater:

    • Greywater is the best water that comes from sinks, washing machines, bathtubs and showers.
    • Greywater contains a very low level of contamination and making it easier to treat and process.
    • Recycled greywater is commonly used in irrigation and constructed wetlands as long as no harmful chemicals are present.

    Treatment of Greywater

    • Greywater can be reused in cartoons with little or no treatment subsurface irrigation system to evenly spread water around in the garden.
    • This method is very safe for treated greywater.

    Thank you.

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What are the different structural shapes used in steel structures? Kindly named it and explain the importance and function of these structural shapes?

  1. [Deleted User]
    This answer was edited.
    What are different structural shapes used in steel structures amd its Importance and Function?

    ANGLE SECTION - use for both compression and tension member. it is also used for a build-up beam. equal angle unequal angle bulb angle - mostly use for ship and storage tank construction CHANNEL SECTION - mostly used for the build-up column. also, use for tension members. I-SECTION - this kind of seRead more

    • ANGLE SECTION – use for both compression and tension member. it is also used for a build-up beam.
    1. equal angle
    2. unequal angle
    3. bulb angle – mostly use for ship and storage tank construction
    • CHANNEL SECTION – mostly used for the build-up column. also, use for tension members.
    • I-SECTION – this kind of section widely use for beam construction due to its better stiffness.
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What are digital elevation models in a GIS software? Why we used it in a GIS software? Explain it benefits for the civil engieering  and how we used it for survey of sites?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare

    Digital elevation models are digital representations of x, y, and z locations of points on the surface area of a terrain. These locations are acquired either from a GPS receiver, survey instruments, or aerial or satellite stereo photography depending on the spatial accuracy needed. These digital filRead more

    Digital elevation models are digital representations of x, y, and z locations of points on the surface area of a terrain. These locations are acquired either from a GPS receiver, survey instruments, or aerial or satellite stereo photography depending on the spatial accuracy needed.

    These digital files of x, y, and z locations are used by the algorithms in a GIS software to transform into either three-dimensional surfaces or elevation contours. It is the GIS software that makes use of this “spatial data.” The output of these algorithms are used for further analyses and calculations.

    These could be; calculating cut and fill off of the land under study, 3D visualization of a terrain, watershed and viewshed analyses, and many other civil engineering, infrastructure, architectural and even video games, defense and intelligence-related applications and uses.

    Hope this helps.

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