Specifications for RCC Construction | Building Estimating and Costing





In my earlier articles, I have discussed types of specifications and various purposes for which specifications are to be given. Most of the constructions of various types of buildings are RCC constructions. In this article, we are going to discuss in detail about the specifications that are to be necessarily given for carrying out RCC (reinforced Cement Concrete) constructions.

RCC specifications

RCC specifications

RCC Specifications

  • Shuttering shall be done using seasoned wooden boards of thickness not less than 30mm.
  • Surface contact with concrete shall be free from adhering grout, nails, splits and other defects.
  • All the joints are perfectly closed and lined up.
  • The shuttering and framing is sufficiently braced.
  • Nowadays timber shuttering is replaced by steel plates.
  • All the props of approved sizes are supported on double wedges and when taken out, these wedges are eased and not knocked out.
  • All the framework is removed after 21 days of curing without any shocks or vibrations.
  • All reinforcement bars conform IS specifications and are free from rust, grease oil etc.
  • The steel grills are perfectly as per detailed specifications.
  • The covers to concrete are perfectly maintained as per code.
  • Bars of diameter beyond 25mm diameter are bent when red hot.
  • The materials proportion should be as per the specifications of the concrete.

Number of Cement bags required for a specific cement concrete ratios

  • For cement concrete of ratio 1:1:2(1 cement:1sand/coarse sand:2graded stone aggregate) require 11no bags of 50kg.
  • For cement concrete of ratio 1:1.5:3 require 7.8no bags of 50kg.
  • For cement concrete of ratio 1:2:4 require 6 no bags of 50kg.
  • For cement concrete of ratio 1:3:6 require 4.25no bags of 50kg.
  • For cement concrete of ratio 1:4:8 require 3.2 no bags of 50kg.
  • For cement concrete of ratio 1:5:10 require 2.50 no bags of 50kg.
  • For cement concrete of ratio 1:6:12 require 2.25 no bags of 50kg.


, , , ,






You can leave a response, or trackback from your own site.


  1. #1 by Vijay on September 10, 2010 - 10:18 pm

    RCC Specification:
    -The specification of RCC band follows:

    #The RCC (Reinforced Cement Concrete) band is as wide as the thickness of wall and 75 mm to 100 mm thick and constructed using M 15(1:2:4) cement concrete.

    #Provide two bars 10 mm in diameter at its mid thickness along with 6mm diameter link @ the rate of 150 mm c/c throughout of the length of walls.

    #Use 12 mm diameter bars in seismic zone. In wall length more than 6m between cross wall.

    #Use 4 bars in 150 thick band.

  2. #6 by AMIT on February 4, 2011 - 5:27 pm

    I want to know that the Best Lenter of the House is RCC or Bricks.

    I can confuse, and I want to know that basically what cost of these lenter is 1000 sq. ft.

    Please tell me.

  3. #7 by Y.Lavanya on February 23, 2011 - 10:05 pm

    1 cu.m concrete = who much cement quantity.

    • #8 by BenzuJK on February 25, 2011 - 5:35 am

      Hello,
      M20 grade of concrete is generally used. The cement content is different for different grades of concrete.
      Cement content in M20 grade concrete = 270 kg/m3

  4. #9 by Abhishek Newatia on May 25, 2011 - 6:05 am

    I wish to know the steps to be taken to erect a concrete roof from ground.
    can someone help?

  5. #11 by thiru on June 17, 2011 - 12:11 am

    footing size : 1.2m x1.2m
    column size :0.23m x 0.23 m
    depth of column : 1.5m
    soil density :18 kn/m
    please reinforcement steel detail & design.

    • #12 by BenzuJK on June 17, 2011 - 12:21 am

      Hello Thiru,
      I don’t design. I help people clear their doubts in design. Foundation design guide is available on my site. Go through it and design the steel reinforcement for the structure. If you have any doubts or something you don’t understand feel free to ask a question.

  6. #13 by shiv on June 28, 2011 - 10:48 pm

    hi
    in a 1 cu.m who much concrete and the ans:- is 2400 kgs with steel 2500

  7. #14 by Jeff WInn on June 30, 2011 - 8:13 am

    Are these specifications universal? Or can individual counties or regional building departs have more/less specific requirements?

    • #15 by BenzuJK on July 3, 2011 - 12:12 am

      Hello Jeff Winn,
      These specifications are more or less the same in every country.

  8. #16 by name on July 8, 2011 - 2:18 am

    i am sunil sharma and i ask you some question regarding civil

    please give me mail on above mail id

    • #17 by BenzuJK on July 10, 2011 - 3:14 am

      Hello,
      You are welcome to ask any questions related to Civil engineering on the blog and I will make sure that I am able to answer all your questions.

      Benzujk

  9. #18 by saranya on July 17, 2011 - 11:06 am

    it’s very useful for me.. then i want to desing for plan of apartment of 2000sqf,can u help me?

    • #19 by BenzuJK on July 18, 2011 - 7:05 am

      Hello Saranya,
      You can always ask any doubts or questions you have regarding designing… We will always try our best to help you.

  10. #20 by Jonan Kandwanaho on August 22, 2011 - 9:16 am

    Hello,

    I hereby request for a price quotation for barriers so that i can know the price and how to press an order.

    Hoping for your quick reply.
    Thanks and best regards.
    Why dont you publish you email address on your website!!!!
    Kandwanaho Jonan

  11. #21 by INDRAJEET on August 30, 2011 - 12:44 am

    I WANT TO KNOW THAT HOW MUCH DUST AND AGGREATE STONE REQUIRED IN 1CU.M

  12. #22 by thamizhselvan on September 5, 2011 - 5:53 am

    i need good brand of elecyric material like wire, tube light, fan , switch &switchbox for my new house whose constrution is going on now

  13. #23 by sivaprasad on December 22, 2011 - 11:13 pm

    what is the perfect shuttering in industrial like 6 to 9m high slabs. how it will be build?

  14. #24 by shameem on January 1, 2012 - 6:01 am

    hello,
    In slab and walls of RCC we used joints at 45 degree but nowadays designer has given us to leave joints vertical either ln slab and walls, Pls. you make me it clear which type of joint is good.

  15. #25 by Anand Shah on January 18, 2012 - 10:12 am

    Hi, Do you have a std sheet where in estimation and RATE ANALYSIS is readily available. If yes, do send on my email ID..

  16. #26 by Amit Mahajan on January 19, 2012 - 10:54 pm

    how to make a material estimation for project of 12000 sqft G+3 building

  17. #27 by gaurav giri on January 22, 2012 - 3:07 am

    INDRAJEET :
    I WANT TO KNOW THAT HOW MUCH DUST AND AGGREATE STONE REQUIRED IN 1CU.M

  18. #28 by A RAMESH on February 29, 2012 - 7:17 am

    it require as per grade of concrete like 1:2:4 it requires one part of cement and 2parts of fine aggregate and 4parts of coarse aggregate

  19. #29 by Rotex on March 9, 2012 - 4:16 am

    Pls i want to know hw to calculate for reinforcement on decking

  20. #30 by chaxul darji on March 22, 2012 - 1:05 am

    which cement use in slab.
    PPC-43/53
    OPC-43/53
    How many strength gate in after 7 day and 28day

  21. #31 by bhargavpatel on April 24, 2012 - 5:23 am

    i want to know that how much of length increase when i am bending steel bar.

    bending of steel in 45 degree, 90 degree and hook (180 degree)

    dia of bar :- 8mm; 10 mm; 12mm ; 16 mm ; 20mm; 25mm ; 32 mm

  22. #32 by rishu raj on April 25, 2012 - 3:10 am

    hi i just wanted to know about estimating of arch and culverts

  23. #33 by sharad mahadik on May 6, 2012 - 9:29 am

    allconstruction activity norms,i.e. rcc,plastering, b/w,and others like painting ,pop norms(how much sand ,cement,metal1,2 etc.)

  24. #34 by saranya on May 12, 2012 - 4:09 am

    i want to know the steps of detailed estimation of rcc column of size 9″x1’6″with trapezoidal footing of size 7’6″x7’6″. give a detailed estimation and specifications

  25. #35 by Vishnu on May 29, 2012 - 10:07 am

    I want to the procedure for preparing an estimation for a building
    pls help

  26. #36 by Shams on June 7, 2012 - 11:47 am

    I just want to know some thing about estimation. I want to construct a rcc slab from main road to my house. It will be sloped. It’s length is 41ft and width is 7ft. So, how I estimate. That means what amount of steel, sand and stone or brick chips do I required. Slab thickness is 4 inch.

  27. #37 by JEGADEESHKUMAR M on June 22, 2012 - 8:20 am

    Hello.. i want recent estimation cost for following this ;
    excavation cost Per cu.m
    construction cost Per cu.m
    Plastering per sq.m

  28. #38 by jnana on June 30, 2012 - 9:59 pm

    please do answer these questions.
    1. What is max shear stress in concrete?
    2. What is the minimum and maximum cement content for RCC?
    3. What is cube strength and cylinder strength?
    4. Why we need torsional reinforcement in two way slab?
    5. What is meant by ductile detailing?
    6. What is high strength concrete?
    7. What is tensile strength of concrete?
    8. What is modulus of elasticity of concrete?
    9. What is the nominal concrete cover for mild/moderate and severe exposure?
    10. What is the formula for maximum shear reinforcement in beams?
    11. Min and max steel in slabs and beams and columns
    12. Expansion joints spacing?
    13. Slenderness ratio in columns
    14. Max spacing of steel in slabs, min and max dia
    15. Why distribution steel is provided?
    16. What is uniaxial, biaxial bending in columns
    17. Minimum concrete strength for various components of a building
    18. Minimum width of columns as per IS 13920
    19. Densities of concrete, bricks, hollow block, steel, etc.,
    20. Define over reinforced, under reinforced and balanced section and what is preferred in failure situatiions

    thank you!

  29. #39 by chip on July 13, 2012 - 7:38 am

    can one do away with the extra top and bottom bars in rcc beams leaving only the 4 main bars (16mm dia. 2 @ top, 2 @ bottom, no extra bars, 3meters supported length, supporting a 4″ slab on steel decking)? what could happen? sitll safe?

  30. #40 by Divya on July 16, 2012 - 10:22 am

    plz i want to know about the plan of duplex house.how can we draw?

  31. #41 by VANAPALLI SRIDHAR on July 28, 2012 - 4:53 am

    I want list of grade -M5 to M50 grades ratios

  32. #42 by Rashmin on August 21, 2012 - 10:39 pm

    I want to know that how much cement bag would required for rcc for 100 sq fit of beam or piller ?
    size can be 9″ by 9″

  33. #43 by kannan on August 23, 2012 - 3:38 am

    i want more information of indian standerd specification metal sand

  34. #44 by hemant on August 29, 2012 - 8:24 am

    i want cost of material & labour for commercial complex,say percentage distribution,that means steel=20 % etc

  35. #45 by Uttam Kumar on September 8, 2012 - 4:07 am

    Vishnu :
    I want to the procedure for preparing an estimation for a building
    pls help

  36. #46 by MAHsooD on November 26, 2012 - 7:31 pm

    Hello!
    pls help me. R.C.c roof slab steel main bar & distribution bar design & calculation of steel method

  37. #47 by Yasin on December 8, 2012 - 9:27 pm

    We are looking for few RCC water tanks builders or our new project in Abudhabi.

  38. #48 by azizurrehman on January 18, 2013 - 10:03 pm

    Pls i want to know hw to calculate for reinforcement on decking

  39. #49 by sachin raut on May 6, 2013 - 4:13 am

    what is purpose of providing shear in RCC column

    • #50 by BenzuJK on June 9, 2013 - 6:22 am

      Shear reinforcement prevents the structure from development cracks in the structural components.

  40. #51 by Biplab Kisan on December 25, 2013 - 9:14 pm

    After demarcation of construction site how the positioning of central coordinate(0,0,0) is done as per grid plan so that proper laying out of column and other points of column are determined.pls help me by giving detail explanation in the mentioned email id.Thank u hope i will be clarified as like others do.

(will not be published)