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How to avoid crack in the new construction

Sun May 09, 2010Total posts : 4
vrnavukarasu
vrnavukarasu
Join date: May 2010
Topic: How to avoid crack in the new construction

I am construct new building, how is avoid the crack in the building
Mon May 10, 2010Post  #1
S L Gupta (Civil Engg)
S L Gupta (Civil Engg)

Join date: Mar 2008
Post subject: Reply- How to avoid

Dear vrnavukarasu,

Cracks in building are a common occurrence and these occur due to carelessness of contractor, mason, and ignorance of house owner and using of inferior materials in construction. It is important to understand the causes and the measures to be taken for their prevention. Materials such as bricks, mortar and concrete, which contain considerable quantity of water at the time of construction, dry out subsequently and under go major contraction.

for further details you can read articles available at links below:


http://www.gharexpert.com/home/new_categorylist.aspx?PL=2&CATID=1371

http://www.gharexpert.com/home/HOW_TO_PREVENT_CRACKS_IN_BUILDING.aspx


Regards
S.L.Gupta




 
Mon May 10, 2010Post  #2
juhi
juhi

Join date: Apr 2010
Post subject: yes

hello vrnavukarasu,
You can ignore those but you have take some of the precautions. That are
1.    Minimize the mix water content by maximizing the size and amount of coarse aggregate and by using low-shrinkage aggregate.
2.    Use the lowest amount of mix water required for workability and placement; do not permit overly wet consistencies.
3.    Use calcium chloride admixtures only when necessary.
4.    Provide contraction joints at reasonable intervals, 30 times the wall thickness is a good “rule-of-thumb”.
5.    Prevent rapid loss of surface moisture while the concrete is still plastic through use of spray-applied finishing aids or plastic sheets to avoid plastic-shrinkage cracks (more important in slabs)
6.    Prevent extreme changes in temperature after placement and initial cure.
7.    Properly place and consolidate the concrete.
 and i also agree with s. l. gupta gharexpert have many good articles which can help you..
bye take care..

 
Thu May 13, 2010Post  #3
N C Pathan
N C Pathan

Join date: Apr 2010
Cracks generally occur at the junction of brickwork and bottom of beams. This is the source of leakage in future. To avoid this put chicken mesh at the junctions before plastering. To avoid honey combing use proper grade of concrete and control water cement ratio. Ensure during concreting the cement slurry does not come out from the concrete. This can be overcome by putting plastic paper below the reinforcement. Always hire services of a competent civil engineer when the work is in progress. There are a number of other measures that can not be covered in just one or two pages.
 
Sat May 21, 2011Post  #4
bhattkalpit
bhattkalpit

Join date: Mar 2010

hi everybody,

for my new home structure is ready and now builder is going to start internal and external plaster and then flooring.

i have seen some macro cracks in some house in my new society, so to avoid the same i am looking for goods tips and proportion of material is required.

thanks & regards,
Kalpit 

 

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