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What are the Tolerance Limits on Construction Site?

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Accuracy of measuring equipment in batching plant.
Cement : + – 2%
Aggregate : + – 3%
Admixture : + – 3%
Water : + – 3%
Mixing time : 2 minutes for one mixing. (Mixing which is being done on site)

Tolerance in Form work
In C/S for columns & Beams deviation is = + 12mm more (or) – 6mm less in size
In footing plan = + 50 mm more (or) – 12 mm less size
In depth = + – 0.05 D (specified thickness).

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Tolerance in Reinforcement
For effective depth D < = 200mm = +- 10mm For effective depth D > 200mm = +- 15mm
For Cover to reinforcement = + 10mm
Maximum freefall of concrete = 1.50 m height.

Tolerance on diameter in length
0-25mm = +- 0.5 %
25-35mm = +- 0.6 %
35-50mm = +- 0.8 %

Tolerance on weight per metre
0-10mm = +- 7%
10-16mm = +- 5%
16 and above = +- 3%

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Tolerance for cutting Length
A) When the specified length is not given = + 75mm (or) – 25 mm
B) When the minimum length is specified = + 50 mm (or) – 0 mm

We are thankful to Er. Vikrant for submitting this to us.

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Comments
  • sriram January 7, 2012 at 8:55 am

    I would like to know whether these limits are applicable to Indian Construction works or others.

  • MSP January 19, 2012 at 7:17 am

    As per IS 4925-2003 tolerance limits for measurements in batching plants are:
    Cementitious material & water + – 1%; agr + – 2%; Admixtures + – 3%.

  • Satyen kUmar De July 7, 2012 at 8:43 am

    I am thankful to this web site, because it is very helpful to the Civil Engineers. I expect more tolerance to be included in this page.

  • Fardin Abbassi March 6, 2013 at 4:50 am

    I d like to know what to do with unacceptable tolerance in concrete buildings

  • Mukesh kumar December 27, 2014 at 7:03 am

    Thanks to grow knowledge about construction.

  • M.Manikandan January 31, 2015 at 10:48 am

    VERY KIND OF YOU…………….I LOVE CIVIL

  • sharad naik November 29, 2015 at 11:01 am

    What is the standard of core test for rigid pavement? on what distance take core for testing for compressive strength?

  • R.Murali August 9, 2016 at 2:50 am

    Please send plastering tolerance details

  • madanagopal September 29, 2016 at 1:55 am

    when we buy tmt rods how much weight tolerance per ton

  • Arnab pal May 19, 2017 at 4:32 am

    Please send plastering tolerance details…………

  • Purvangkumar M Patel June 5, 2017 at 6:18 am

    Can anyone please tell us, which IS Code we need to refer for Construction Tolerance ? Example: ACI 117 is good for tolerance, but that is based on America. Can anyone tell me IS Code for Tolerances?

  • satish June 7, 2017 at 6:46 am

    anyone suggest r guide for referral IS codes for plastering, painting, blockwork, and room dimensions

  • Santhosh Marcher August 1, 2017 at 2:11 am

    Thank you very much sir really tolerance very use in constructions..

  • m.kumar October 15, 2017 at 1:38 am

    I need BBS format in excel and how to prepare

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