Quantity Take-off Worksheet
Programmed by Rey Asuncion (Rox Isabela) (Copyright 2026)
This Concrete Material Estimator is done with reference from the book of Max Fajardo's Simplified Construction Estimate.
Footings, columns, beams, slabs — volume method. Fill in the sizes and click "Add Member" to add it to the take-off below.
Wall area, block count, and mortar for block laying (with optional plaster on 1 or 2 faces).
For plaster on concrete walls, ceilings or slabs — not part of a CHB wall entry above.
Rebar weight by diameter, cut length and piece count, using the standard deformed-bar formula (D²/162 kg per meter). Commercial bars are ordered in fixed stock lengths, so cut pieces are converted to standard bars needed.
Direct cost items priced right in the entry — scaffolding, labor lump sums, equipment rental, or anything not covered by the material tables above. Cost = Size × Quantity × Unit Price (e.g. 50 kg per bundle × 10 bundles × price/kg). Leave Size blank to skip it and price by Quantity × Unit Price alone.
Document the construction method and sequence of work — one step per entry, numbered in order. Edits update a step in place; new steps are added to the end.
Reference tables and mixture standards this worksheet calculates from, plus space for your own project notes.
| Class | Mixture Ratio | Cement (40kg bags) | Cement (50kg bags) | Sand (m³) | Gravel (m³) | Typical Use |
|---|---|---|---|---|---|---|
| AA | 1 : 1½ : 3 | 12.0 | 9.5 | 0.50 | 1.0 | Water-retaining structures, precast, heavy-duty slabs |
| A | 1 : 2 : 4 | 9.0 | 7.0 | 0.50 | 1.0 | Footings, columns, beams, slabs — general RC works |
| B | 1 : 2½ : 5 | 7.5 | 6.0 | 0.50 | 1.0 | Wall footings, sidewalks, low-stress slabs |
| C | 1 : 3 : 6 | 6.0 | 5.0 | 0.50 | 1.0 | Lean concrete, fill, non-structural works |
| CHB Size | Pcs / m² | Cement Class A (bags) | Class B (bags) | Class C (bags) | Class D (bags) | Sand (m³) |
|---|---|---|---|---|---|---|
| 10 x 20 x 40 cm (4 in) | 12.5 | 0.792 | 0.522 | 0.394 | 0.328 | 0.0435 |
| 15 x 20 x 40 cm (6 in) | 12.5 | 1.526 | 1.018 | 0.763 | 0.633 | 0.0844 |
| 20 x 20 x 40 cm (8 in) | 12.5 | 2.260 | 1.500 | 1.125 | 0.938 | 0.1250 |
| Thickness | Class A (bags) | Class B (bags) | Class C (bags) | Class D (bags) | Sand (m³) |
|---|---|---|---|---|---|
| 8 mm | 0.144 | 0.096 | 0.072 | 0.060 | 0.008 |
| 12 mm | 0.216 | 0.144 | 0.108 | 0.090 | 0.012 |
| 16 mm | 0.288 | 0.192 | 0.144 | 0.120 | 0.016 |
| 20 mm | 0.360 | 0.240 | 0.180 | 0.150 | 0.020 |
| 25 mm | 0.450 | 0.300 | 0.225 | 0.188 | 0.025 |
| Class | Ratio | Cement (40kg bags/m³) | Sand (m³/m³) |
|---|---|---|---|
| A | 1 : 2 | 18.0 | 1.0 |
| B | 1 : 3 | 12.0 | 1.0 |
| C | 1 : 4 | 9.0 | 1.0 |
| D | 1 : 5 | 7.5 | 1.0 |
Standard deformed round bar weight: W (kg/m) = D² ÷ 162, where D is the nominal bar diameter in millimeters. This is the industry-standard approximation derived from steel density (7,850 kg/m³) and is independent of bar grade.
Enter unit prices to cost out the material take-off computed in the other tabs.
| Material | Quantity | Unit Price | Extended Cost |
|---|
Combined totals and itemized take-off across all worksheet tabs.
| Source | Cement (bags) | Sand (m³) | Gravel (m³) |
|---|
| Reinforcing Steel — by Diameter | Weight (kg) | Total Length (m) | Stock Bars |
|---|