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Rate Analysis of Concrete

Rate Analysis of Concrete

  • 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:

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.

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.

PORTION SHOWING SMALL VOIDS

Shead Portion Showing Small Voids.

  • 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: Rate Analysis of Brick Masonry

Work to be Measured Separately

Rate analysis of concrete 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 Concrete

Example: for Rate Analysis for Concrete

Sr No. Description Qty Unit Rate Cost
Providing and laying in foundations and plinth cement concrete 1: 5: 10 (1 cement: 5 coarse sand: 10 graded stone aggregate 40 mm nominal size) excluding the cost of centering and shuttering.
Details of cost for 10.00 Cu.m.
A Labour Charges
1 Bhisti 2.70 Days 350.00 945.00
2 Coolie 6.00 Days 350.00 2100.00
3 Belder 9.00 Days 350.00 3150.00
4 Mason 0.5 Days 700.00 350.00
5 Helper 0.5 Days 400.00 200.00
6 Mate 0.4 Days 500.00 200.00
B Material
Cement 27.40 Bag 320.00 8768.00
Wastage Extra 2% 175.36
Sand 4.75 Cu.m. 1325.00 6293.75
Wastage Extra 7% 440.56
Aggregate 9.50 Cu.m. 1100.00 10450.00
Wastage Extra 5% 522.50
C Hire and Running Charges of Mech Mixer 5% 1679.76
D Transportation Cost 1% 1% 352.75
E Other Charges 2 % Extra 2% 705.50
F Add for Water Charge @ 1% on Items Marked 1% 352.75
G Add for Contractor’s Profit @15% on Items Marked 15% 5502.89
Cost of 10.00 Cu.m. 42188.82
Cost of Cu.m. 4218.88
Round off Cu.m. 4220.00

Calculation of Concrete for Rate Analysis of Concrete

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

Also, read: Rate Analysis of Excavation in Earthwork

Material Calculation for Rate Analysis of Concrete

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

Cement calculation

Dry Cement mortar 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 22 % (1.25) extra

So, Cement calculation requirement of cement = 1 x 1.25 x 1.22 = 1.52 cu.m,

Herer calculation concrete ratio 1:5:10

The required amount of Cement quantity at concrete = 1.52 Cu.m. x (1/(1+5+10))

  • = 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

Required amount of Sand = 1.52 Cu.m. x (5/(1+5+10))

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

So,

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

Aggregate calculation

The required amount of Aggregate
= 1.52 Cu.m. x (10/(1+5+10))

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

So,

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

Also, read: Mortar Vs Grout | What Is Motor and Grout | Type of Motor and Grout | Difference Between Mortar and Grout

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. 0.9-day belder, per cu.m. 0.05-day mason, per cu.m. 0.05-day helper, per cu.m. 0.04-day mate  for water curing

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
FAQ

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%)

Rate Analysis for Cement Mortar

Labours for 1m³ No’s Amount
Mazdoor 0.75 Rs. 375
Bhisti 0.07 Rs. 28
Rs. 403

Concrete Rate Analysis

For concrete rate analysis, we need first to organize the data we need for calculations. This includes materials, steel, craft, shuttering charge, and water charge.

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About Matthew L. Deloney

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