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Preet Chovatiya
Preet Chovatiya

Preet Chovatiya

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On-site generally, I heard these two terms capping beam and ground beam, so What is the difference between these two?

  1. Nimesh Gajera

    Nimesh Gajera

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    Nimesh Gajera Learner

    There is a minor difference between ground beams and capping beams Ground Beams are provided between the pile caps, it provides structural stability and provide strength to a foundation While Capping Beams ties all piles together and helps to distribute load of superstructure to the substructure. ItRead more

    There is a minor difference between ground beams and capping beams Ground Beams are provided between the pile caps, it provides structural stability and provide strength to a foundation While Capping Beams ties all piles together and helps to distribute load of superstructure to the substructure. It has the same function as pile caps, in addition to distribute the load of the superstructure.

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vivek gami
vivek gami

vivek gami

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What is surface excavation?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    Surface excavation involves the removal of the exposed layer of the earth surface, including any vegetation or decaying matter which could make the soil compressible and therefore unsuitable for bearing structural loads. Hence the depth will be vary from site to site, usually range of 150-300 mm.

    Surface excavation involves the removal of the exposed layer of the earth surface, including any vegetation or decaying matter which could make the soil compressible and therefore unsuitable for bearing structural loads. Hence the depth will be vary from site to site, usually range of 150-300 mm.

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Sarthak Aswal
Sarthak Aswal

Sarthak Aswal

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can we consider drum mixing of concrete same as batch mix or nominal mix?

  1. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner

    Yes. Of course. The method of mixing is not relevant to batching. So long as the quantities and proportions remain what they need to be, drum mixing or hand mixing, both are batch mixing. In fact, in the industry, mostly drums are used for mixing concrete because they save time and labour.

    Yes. Of course. The method of mixing is not relevant to batching. So long as the quantities and proportions remain what they need to be, drum mixing or hand mixing, both are batch mixing.

    In fact, in the industry, mostly drums are used for mixing concrete because they save time and labour.

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Abhishek Kirave
Abhishek Kirave

Abhishek Kirave

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For the reinforcement work we required the best quality of Rebar. How we can test the quality of steel reinforcement on the work site? What type of simple site test for finding steel quality?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare

    Eight major pts: Manufacturer Certificate Grade of steel Ultimate & bearing strength of steel Length of Bar Std length = 12m. Wt of bar Using formula, W = (DxD)/162 kg/m For 10mm dia, W = (10x10)/162 = 0.617 kg/m Dia of Bar Randomly check the dia of bar using "Vernier Caliper" from each lots ofRead more

    Eight major pts:

    • Manufacturer Certificate
    1. Grade of steel
    2. Ultimate & bearing strength of steel
    • Length of Bar
    1. Std length = 12m.
    • Wt of bar
    1. Using formula, W = (DxD)/162 kg/m
    2. For 10mm dia, W = (10×10)/162 = 0.617 kg/m
    • Dia of Bar
    1. Randomly check the dia of bar using “Vernier Caliper” from each lots of diff dia.
    • Tag on Bar
    1. ISI Mark
    2. Grade of Steel
    3. Company logo/Name
    • Color of Bar
    1. Should be grey & not any rusted color.
    • Bend Test
    1. Bend the bar at 180° & observe the behavior of the rebar.
    • Re-Bend Test
    1. Bend the bar at 135° & observe the behavior of the rebar.
    2. Place it in 100°C hot water for 30 mins. Then bend at 157.5° & observe the behavior of the rebar.

    Most imp’ly, the bars should have grips on it.

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Vivek Patel
Vivek Patel

Vivek Patel

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What is deadmen or tell-tales in excavation?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    Basically in construction, deadmen refers to a heavy weight, typically a mass concrete block used to provide support or resistance to a load. These blocks are usually embedded firmly in soil, however some blocks may simply rest on the ground surface. A deadmen also referred to as a jacking lug.

    Basically in construction, deadmen refers to a heavy weight, typically a mass concrete block used to provide support or resistance to a load. These blocks are usually embedded firmly in soil, however some blocks may simply rest on the ground surface.

    A deadmen also referred to as a jacking lug.

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Velisiwe Purity
Velisiwe Purity

Velisiwe Purity

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How to pour Concrete in Narrow/Sleak Columns?

  1. Preet Chovatiya

    Preet Chovatiya

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    Preet Chovatiya Learner

    You can use Self Compacted Concrete to use for narrow columns. It also used where the reinforcement is heavy and process of compaction is not available/difficult to compact.

    You can use Self Compacted Concrete to use for narrow columns. It also used where the reinforcement is heavy and process of compaction is not available/difficult to compact.

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fathima
fathima

fathima

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Beginner

What is the CBR value for sub grade in rigid pavement road construction?

  1. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner

    Rigid pavements because of their nature, allow for a larger variation in subgrade material (in terms of strength), unlike flexible pavements. That is why rigid pavements can be built over almost any kind of soils with appropriate ground improvement. The general range for CBR is 2% to 14% or 15%. IfRead more

    Rigid pavements because of their nature, allow for a larger variation in subgrade material (in terms of strength), unlike flexible pavements. That is why rigid pavements can be built over almost any kind of soils with appropriate ground improvement.

    The general range for CBR is 2% to 14% or 15%. If it is found below 6%, then the code specifies some necessary subgrade improvement before laying the concrete slab directly over it.

    Also, the CBR could be increased up to say 40% or 50% by ground improvement, and still, the subgrade may be fit for rigid pavements.

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Gopal Mishra
Gopal Mishra

Gopal Mishra

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What are the different advantages and disadvantages of artificial and natural sand for flooring of tiles? Which one is suitable ?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare

    River sand M sand Shape is round & smooth Shape is cubical, angular & rough texture Less cement paste is reqd to make concrete Req’s more water & cement Sand has high cost but using it makes work economical Sand is cheaper but using it will make it increased cost Contains less microfineRead more

    River sand M sand
    Shape is round & smooth Shape is cubical, angular & rough texture
    Less cement paste is reqd to make concrete Req’s more water & cement
    Sand has high cost but using it makes work economical Sand is cheaper but using it will make it increased cost
    Contains less microfine particles Contains more microfine particles
    Doesn’t affect any property, best choice Affects strength & workability of cocrete
    Moisture content present Less or no moisture content
    Strength is less High comp strength & flexural strength but should be well graded.
    Slit & over-sized materials& marine products present should be removed by washing & screening. No slit & over-sized materials & marine products
    Used for RCC, plastering & Brick or block laying work Diff grades is used for diff works.

     

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