In RCC Structure which is best build brick wall before columns or after it

[Venkatshanthi]

Good evening all
I have 1 doubt in construction
We are build a building
Here 2 type following
1. First column concrete then roof concreting then doing brick work
2. First brick work and column concreting then roof concreting (look like wall bearing)
This 2 type witch type will be best and it's uses please explain

 

[Gnyoganarasimhan]

In a framed Structure of columns,beams and slabs first Structure should be done then only brick work

 

[amd007]

When you are doing any RCC structure, always note that first, you have to go for the RCC frame which includes RCC columns, beams and slab and only when the frame is completed and the desired strength is gained by the structure then only you should go for the masonry work.

The second option which you are talking about is best to go for complete load-bearing walls in masonry over which you can cast an RCC slab with inbuilt beams wherever required as per design.

 

[Venkatshanthi]

In a framed Structure of columns,beams and slabs first Structure should be done then only brick work

Thank you sir..but 2 second type any disadvantage occurre in buildings sir please explain

 

[Venkatshanthi]

When you are doing any RCC structure, always note that first, you have to go for the RCC frame which includes RCC columns, beams and slab and only when the frame is completed and the desired strength is gained by the structure then only you should go for the masonry work.

The second option which you are talking about is best to go for complete load-bearing walls in masonry over which you can cast an RCC slab with inbuilt beams wherever required as per design.

Thank you sir. But we are doing framed work then doing brick work but beam and column not bonding with bricks.at the same time beam and column between craks will be form this craks no issue ha sir ??

 

[amd007]

Thank you sir. But we are doing framed work then doing brick work but beam and column not bonding with bricks.at the same time beam and column between craks will be form this craks no issue ha sir ??

If we follow proper methodology of construction, seperation cracks will not occur at masonry and rcc intersection joints.

For that we need to do the following process:

1. Use a grinder to remove the laitence, shuttering oil residue on RCC member where the masonry is going to touch with RCC.
2. Clean with water and then apply NITOBOND from Fosroc or similar bond coat over which a dash coat prepared from (1:4 cement mortar and nitobond 10% by wt of cement mix thoroughly with adequate water) leave it for 24 hrs.
3. Start masonry work after doing point no.1 & 2.
4. Use patli or runner beams at every 1.00m height of masonry, this also will reduce the cracking occuring at beam and masonry joint.
5. Remember that point no 1 and 2 should be done for all interfaces where RCC meets the masonry walls.
6. At beam bottom joint drive cement pegs which will ensure no further settlement. After this all intersection joints need to be grouted with non shrink cement grout which will fill up the cracks and gaps in the masonry joints, this activity to be carried out after the minimum curing period of 7-10 days.
7. Apply G.I chicken mesh on all joints of RCC and masonry before carrying out plaster activities.
8. All the above activities will ensure no cracks will develop at masonry to rcc joints.

The second methodology which you are talking I would suggest you cast the columns first, followed by masonry upto beam bottom and then you can cast beam and slab at one go so this will ensure good bonding of beam bottom with masonry.