Why we use Cover Block ? Type of Cover Block ? What is Nominal Cover vs clear Cover | By CivilGuruji
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- čas přidán 11. 02. 2021
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Why we use Cover Block ? Type of Cover Block ? What is Nominal Cover vs clear Cover
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About This Video
In This video Er. Sudeep Kumar Agrawal, Corporate Trainer Of Civil Guruji (Civil Engineer Training Institute) is explaining Why we use Cover Block ? Type of Cover Block ? What is Nominal Cover vs clear Cover
Concrete cover means the distance between the outer surface of the concrete and the outermost layer of reinforcement in the concrete. A Concrete cover block is basically a spacer that is used to lift the rebar matrix off the ground so that concrete may flow below the rebar.In order to prevent corrosion of the rebar,it has to be totally sheathed in concrete.It usually needs about 2 to 3 inches of coverage on all sides.
Concrete cover does not have a structural function its purpose is to prevent damage occurring to the building part. It ensures that the concrete encases the steel on all sides so that it is not exposed to the external air.If the cover is insufficient the concrete can flake off. The steel is then no longer covered and may corrode.
The building part is damaged fundamentally in the long term and this can lead to failure. Cover should not be less than 15 mm, and is generally between 20- and 25-mm. Cover Blocks are now becoming more common at constructions sites. As it strengthens the roof top and also beam.
CLEAR COVER TO MAIN REINFORCEMENT:
1.FOOTINGS: 50 mm
2.RAFT FOUNDATION.TOP: 50 mm
3.RAFT FOUNDATION.BOTTOM/SIDES: 75 mm
4.STRAP BEAM: 50 mm
5.GRADE SLAB: 20 mm
6.COLUMN: 40 mm
7.SHEAR WALL: 25 mm
8.BEAMS: 25 mm
9.SLABS: 15 mm
10.FLAT SLAB: 20 mm
11.STAIRCASE: 15 mm
12.RET. WALL: 20/ 25 mm on earth
13.WATER RETAINING STRUCTURES: 20/30 mm
The concrete cover also ensures fire safety, as the concrete keeps the heat away from the sensitive steel. As with the outside cover, a distance must be kept within the building part between the steel bars.
This distance must be at least 2 cm, and it should never be less than the diameter of the largest bar. Depending on the aggregate size, even greater distances may be necessary. If an internal vibrator is to be used to compact the concrete, sufficiently large gaps must be provided.
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Thank you sir ....bahut hi ache se btaye
Good morning sir, what is the minimum spacing according to IS Code for different building elements?
Thanks Sir. Nice info..
Sir pvc or plastic ka cover concrete cover ke jese load le payega kya or uska strength kitni honi chahiye kese pata chalega
Very good sir ji 👍👍👍👍
(B.Tech) civil engeenering mein admission lene keliye eligibility kya hona chahiye Sir
bhai video me aap thoda side me jake boliye
because information nahi dikha rahi
ham lok screenshot kese le
Thank you Sir
Most welcome Rajendra ji .CIVIL GURUJI is always there to help...keep learning and keep supporting us ..For further detail contact us in 9111001234
Sir je (diploma) site engineer ko kya Karna hota hai site per
Site py different kam
Hoty depend krta hai site py different project ko dakhna hota or kam ko dakhna hota hai k drwaing k
Mutabiq ho rha hai .
What is the meaning of "clear cover to main reinforcement''.If we talk about column then is it clear distance between concrete outer face to main bar or rings bar?
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Cover block me beech me hole kyo hota h
Steel adujust k leye
roj sap bahot nice video leke aate he. tq sir very nice video. cops 9847 me mileaga
bhai ourse acha hai?..kuch sikhne ko mila..practical knowledge?
Sir thora dhire padhate to or achha hota
Thanks a lot. Sir, I am Milton Hossain from Bangladesh.
Just i have completed a 3 story built foundation work. Here i have provided 50mm cover block. For grade beam how much cover block will i provide? The beam will be made above 3 feet from ground level.
Welcome Md.Milton Hossain
Hame bahut khusi hai ki aapko hamari mehnat pasand aai , Civilguruji isi tarah civil engineers ko aage badhane ke liye mehnat karte rahega aur aap bhi knowledge dusro ko share karte rahe.
KEEP LEARNING, KEEP SHARING.
@@Civil_Guruji for grade beam covering 25-30mm is it enough?
Sir completed information give in this channel not give uncompleted information.buy course not say
Sir how we can calculate qty of cover block
सर अपना मो नंबर दे दीजिये, वीडियो बहुत अच्छा लगता है
Hello Lbdubey St
Please call 9111001234, hamari team apko guide kar dengi.