Rate Analysis of RCC (Reinforcement Cement Concrete)

• Rate analysis of RCC (Reinforcement Cement Concrete) used for reference book IS Code 1200 part 2 (IS Code 1200 part 2 used for measurement), IS Code 2212, and CPWD Part 1.
• All calculations of Reinforcement Cement Concrete for rate analysis. This calculation calculates of cement, sand, Aggregate, and Reinforcement (RCC = Cement + Sand + Aggregate + Reinforcement mixture this call RCC) for materials.
• RCC is used a sum different proportions 1:0.5:1, 1:1:2, 1:1.5:3, 1:2:4, 1:3:6 etc.(1 cement: 1.5 Sand: 3 Aggregate). This quantity estimation of RCC is required for the rate analysis.

Also, read: Rate Analysis of Plaster

Important Point in Rate Analysis of RCC (Reinforcement Cement Concrete)

Measurement of RCC (Reinforcement Cement Concrete):

• • Unless otherwise stated, all work shall be measured net in the decimal system as fixed in its place as given in below point no 1. to below point no 3. Any work is done extra over the specified dimensions shall be ignored.
    1. Dimensions shall be measured to nearest 0·01 m except for the thickness of slab which shall be measured to nearest 0·005 m,
    2. Areas may be worked out to the nearest 0·01 square meter.
    3. Cubic contents shall be worked out to the nearest 0·01 cubic meter.
  • Dimensions– In booking dimensions, the order shall be consistent and generally in a sequence of length, width, and height or depth or thickness.

Also, read: Rate Analysis of Excavation in Earthwork

Dednctioan of RCC (ReinforcementFr Cement Concrete):

• • Ends of dissimilar materials, for example, beam, ports, girders, purlins, trusses, corbels, and steps up to 500 cm² in cross-section.
  • Opening up to 0.1 m² or as specified.
  • The volume occupied by reinforcement.
  • The volume occupied by pipes, conduits, sheathing, etc., not exceeding 100 cm² each in cross-sectional area or as specified.
  • Small voids, such as the shaded portions in as per below fig., when these do not exceed 40 cm² each in cross-section.
  • Stops, miters, returns, rounded ends, junctions, dishing, etc., in connection with linear or super labors,
    • Note: In calculating the area of an opening. The thickness of any separate lintel or sill shall be included in the height. No extra labour for forming such an opening or voids shall be measured.

Also, read:  What is Rate Analysis | Rate Analysis of Earth Work, Brick, Concrete and Plaster

Work to be Measured Separately

• • • Rate analysis of RCC of the different area and location rate analysis different executed in the following conditions shall be measured separately:
      • Work in or underwater,
      • Work in liquid mud,
      • Work in or under foul situations,
      • Work under tides and
      • Work in snow.

Rate Analysis of RCC (Reinforcement Cement Concrete)

Example for Rate Analysis of RCC

Calculation of Concrete for Rate Analysis of RCC (Reinforcement Cement Concrete)

• • In this Rate Analysis of RCC calculation of material, labor, wastage, and other charges in rate analysis.

Also, read: Rate Analysis of Brick Masonry

Material calculation in Rate Analysis like Cement, sand, aggregate, and reinforcement

Cement calculation

• • • Dry Cement volume = 1.25 convert Wet cement.(The concrete mortar dry volume of concrete decrease volume of dry cement mortar, so 1.25 time of dry mortar)
    • Wastage of cement mortar 30 % (1.25) extra
    • So, Cement calculation requirement of cement = 1 x 1.25 x 1.30 = 1.625 cu.m,
    • Herer calculation concrete ratio 1:1.5:3
    • The required amount of Cement quantity at concrete = 1.625 Cu.m. x (1/(1+1.5+3))
      • = 1.625 x 0.1819
      • = 0.2956 cu.m. cement requirement
      • Cement in k.g. = volume x density cement
      • Cement in k.g. = 0.2956 cu.m. x 1440 (1440 kg/m Density of cement for 50 k.g)
        • = 0.2956 x 1440 = 425.646 kg of cement of bag requied ment of cement in k.g.
        • = 425.646 / 50 (one cemnent bag weight 50 k.g. only) = 8.51 bag
      • So, 10 cu.m. concrete requirement of cement = 8.52 bag x 10 cu.m. = 85.20 bag

Sand calculation

• • • Required amount of Sand = 1.625 Cu.m. x (1.5/(1+1.5+3))
      • =0.443 Cu.m. requierd of sand for 1 Cu.m.
    • So,
      • 10 cu.m. concrete requirement of sand = 0.443 Cu.m x 10 cu.m. = 4.43 cu.m.

Also, rate: Instrumental Errors in Leveling | Type of Errors in Leveling

Aggregate calculation

• • • The required amount of Aggregate
      • = 1.625 Cu.m. x (3/(1+1.5+3))
      • =0.90 Cu.m. required of sand for 1 Cu.m.
    • So,
      • So, 10 cu.m. concrete requirement of sand = 0.90 Cu.m x 10 cu.m. = 9.0 cu.m.
      • Two types of aggregate like 20 mm & 10 mm size. this ratio 60 % of total aggregate 20mm size, 40 % of total aggregate 20mm size
      •  20 mm aggregate = 9.0 cu.m. x 60% = 5.4 cu.m. 20 mm size aggregate
      • 10 mm aggregate = 9.0 cu.m. x 40% = 3.6 cu.m. 20 mm size aggregate

Reinforcement calculation

• • • Assume of reinforcement 2% of the total volume of concrete.
    • so,
      • 1 cu.m. concrete for reinforcement = 1.0 x 2% = 0.02 ton of steel (this 2% only assumse as per exprience)
      •   Her, 10 Cu.m concrete requirement = 0.02 ton x 10 co.m. =0.20 ton = 200 kg for 10 cu.m.

Also, read: What is Bitumen And Bitumens Types

Labour for Rate Analysis of Concrete

• • • As per calculation of rate analysis in labor consumption per Cu.m. requirement as per our experience or CPWD book, this book public by Central Public Works Department, Government of India for easy calculation of the rate analysis, etc.
    • As CPWD Mate per cu.m. 0.27 of day bhisti, per cu.m.0.6-day coolie, per cu.m. 0.05-day Mason -2nd, per cu.m. 0.05-day mason 1st, per cu.m. 0.04-day mate

Extra Work Calculation in Rate Analysis of concrete

• • • Extra Changes in rate analysis as per below
    • Scaffolding 1% Extra
    • Transportation Cost 1%
    • Other Charges 2 % Extra (Electrical, and site extra expense)
    • Add for Water Charge @ 1% on Items Marked
    • Add for Contractor’s Profit @15% on Items Marked

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