• Rate analysis of concrete used of 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 concrete for rate analysis. This calculation calculates of cement, sand, concrete (Concrete = Cement + Sand + aggregate mixture this call concrete) for materials.
• Concrete 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: 5 Sand: 10 Aggregate). This quantity estimation of concrete is required for the rate analysis.

Important Point in Rate Analysis of Concrete

Measurement of Concrete:

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.

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Dednctioan of Concrete:

• Ends of dissimilar materials include 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.

Work to 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 Concrete

Calculation of Concrete for Rate Analysis of Concrete

Material Calculation for Rate Analysis of Concrete

Cement calculation

• = 1.52 x 0.0625
• = 0.095 cu.m. cement requirement
• Cement in k.g. = volume x density cement
• Cement in k.g. = 0.095 cu.m. x 1440 (1440 kg/m Density of cement for 50 k.g)
  • = 0.095 x 1440 = 136.8 kg of cement of bag requied ment of cement in k.g.
  • = 2.736 / 50 (one cemnent bag weight 50 k.g. only) = 2.74 bag
• So, 10 cu.m. concrete requirement of cement = 2.74 bag x 10 cu.m. = 27.40 bag

Sand calculation

• =0.475 Cu.m. requierd of sand for 1 Cu.m.

• So, 10 cu.m. concrete requirement of sand = 0.475 Cu.m x 10 cu.m. = 4.75 cu.m.

Aggregate calculation

• =0.95 Cu.m. required of sand for 1 Cu.m.

• So, 10 cu.m. concrete requirement of sand = 0.95 Cu.m x 10 cu.m. = 9.5 cu.m.

Labour for Rate Analysis of Concrete

Extra Work Calculation in Rate Analysis of concrete

• 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

Rate Analysis for Concrete

• Quantity of material and Its cost.
• Labour cost.
• Cost of equipment or Tools and plants( 1.5%)
• Water charges (1.5%)
• Overhead expenses (2 to 5%)
• Contractor profit (10%)

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