BOQ Estimation Guide
Complete Guide to Construction Cost Estimation in Pakistan
Planning a construction project requires precise calculations and up-to-date market rates. Intextify Construction Suite is designed to help homeowners, contractors, and civil engineers generate accurate Bill of Quantities (BOQ) and cost estimates instantly.
Understanding the BOQ Estimator
A reliable BOQ ensures that your project stays within budget. Our tool uses live market rates for Bricks, Cement, Sand, Crush, and Labor, and calculates required quantities from your plot size and covered area — including foundational Earthfill, critical before masonry begins.
How the Steel Calculator Works
Our integrated Steel Calculator uses the D²/162 formula for metric (meters) and D²/533 for Imperial (feet), ensuring accurate structural cost estimates for any bar diameter.
Why Use Live Material Rates?
Construction material costs fluctuate daily. By leveraging automated daily rate scraping, Intextify ensures your estimates reflect true current market conditions in Pakistan.
Worked Example
5 Marla plot in Lahore (1,125 sqft, using 225 sqft/Marla), single-story, standard construction grade. Based on the 1,125 sqft covered area and a standard 11 ft roof height (multiplier 1.0), the calculator estimates the following high-level material breakdown:
Bricks
14,794
pieces
Cement
439
bags
Sand
2,070
cft
Crush
1,474
cft
Steel
2,959
kg
Labor
1,125
sqft
What is PCC (Plain Cement Concrete)?
PCC stands for Plain Cement Concrete — a mixture of cement, sand, and aggregate without steel reinforcement. Primarily used for firm, level bases for footings and floors.
What is RCC (Reinforced Cement Concrete)?
RCC includes steel bars embedded in concrete, providing high tensile strength for structural elements like beams, columns, and slabs.
Concrete Grades
| Grade | Mix Ratio (C:S:A) | Compressive Strength (28 days) |
|---|---|---|
| M10 | 1:3:6 | 10 MPa (1450 psi) |
| M15 | 1:2:4 | 15 MPa (2175 psi) |
| M20 | 1:1.5:3 | 20 MPa (2900 psi) |
| M25 | 1:1:2 | 25 MPa (3625 psi) |
Worked Example
10ft × 10ft slab, 6 inches thick:
• Wet volume = 10 × 10 × 0.5 = 50 cft
• Dry volume = 50 × 1.54 = 77 cft
• Using M15 (1:2:4): total parts = 7, cement volume = 77/7 = 11 cft ≈ 11 bags
• Sand = 77 × (2/7) = 22 cft ≈ 0.96 tons
• Aggregate (Crush) = 77 × (4/7) = 44 cft ≈ 1.83 tons
Frequently Asked Questions (FAQ)
How does this calculator account for dry volume?
Dry materials take up 54% more volume than wet concrete. Multiply wet volume × 1.54 to get required dry material volume before purchase.
What is the difference between M15 and M20 concrete?
M15 (1:2:4) is for regular slabs and non-load-bearing elements. M20 (1:1.5:3) has higher cement content and is required for load-bearing columns and heavy structural beams.
How many cement bags for a 10×10 ft slab?
A 10×10 ft slab at 6 inches thick (50 cft wet volume) requires approximately 11 bags of cement using M15 mix. Use the calculator above for your exact dimensions.
Why is the dry volume factor 1.54?
When water is added, fine aggregates fill voids between coarse aggregates, shrinking the overall volume by ~35%. The 1.54 factor compensates to ensure correct dry material quantities are purchased.
Steel Reinforcement Cost & Weight Estimation
Accurate estimation of steel (rebar) is critical for structural stability and cost control. Our integrated Steel Calculator automatically computes weight using standard engineering formulas.
Metric Formula (kg/m)
When measuring steel bar lengths in meters, the weight per meter is calculated as: Weight = D² / 162 (Where D is the diameter in mm).
Imperial Formula (kg/ft)
In Pakistan, lengths are often measured in feet. The weight per foot is calculated as: Weight = D² / 533 (Where D is the diameter in mm).
Worked Example
12mm bar, 100 ft total length:
• Weight = (12² / 533) × 100 = 27.02 kg
• At the current default rate of Rs. 282/kg, the estimated cost is 27.02 × 282 = Rs. 7,620.
Plastering Mortar Requirements
Calculating mortar for plastering requires converting surface area and thickness into wet volume, then adjusting for dry material shrinkage.
Worked Example
500 sqft wall area, 0.5 inch thickness, 1:6 mix:
• Wet volume = 500 × (0.5/12) = 20.83 cft
• Dry volume = 20.83 × 1.33 = 27.7 cft
• Total parts = 7, cement = 27.7 / 7 ≈ 3.96 cft ≈ 3.16 bags
• Sand = 27.7 × (6/7) = 23.74 cft ≈ 1.04 tons
Flooring & Bedding Calculation
Tile calculations must account for wastage and mortar bedding volume.
Worked Example
12ft × 10ft room, 12"×12" tiles, 5% waste, 1:6 bedding mix, 1 inch bedding thickness:
• Area = 120 sqft, tiles needed = 120 (at 1 sqft/tile) × 1.05 ≈ 126 tiles
• Bedding wet volume = 120 × (1/12) = 10 cft
• Bedding dry volume = 10 × 1.33 = 13.3 cft
Paint Coverage & Cost
Estimating paint involves deducting area for doors/windows and distributing the required liters into standard containers (Gallons and Buckets).
Worked Example
800 sqft surface, 2 coats, Emulsion (110 sqft/L):
• Net paintable area = 800 × 0.85 = 680 sqft (15% deduction)
• Liters needed = (680 × 2) / 110 ≈ 12.36 L
• Containers (16L bucket, 3.64L gallon) = 0 B, 4 G
Civil Engineering Glossary
Bill of Quantities (BOQ)
A detailed document used in tendering in the construction industry in which materials, parts, and labor (and their costs) are itemized.
Plain Cement Concrete (PCC)
A mixture of cement, sand, and aggregate without any steel reinforcement, typically used as a foundational leveling course.
Reinforced Cement Concrete (RCC)
Concrete that contains embedded steel bars (rebar) to provide high tensile strength, used in slabs, beams, and columns.
Marla to Square Feet Conversion in Pakistan
A Marla is a traditional unit of land area. In Lahore, 1 Marla is generally equal to 225 square feet, while in other regions it may be 272 square feet.
Steel Grade 60 vs Grade 40
Grade 60 steel has a minimum yield strength of 60,000 psi and is standard for commercial and major residential load-bearing structures. Grade 40 (40,000 psi) is typically used for minor, non-load-bearing elements.