1. What is This Calculator For?

This calculator determines the quantities of cement and sand needed for brick wall mortar based on the volume of mortar required and the desired cement:sand ratio.

2. How Does the Calculator Work?

The calculator uses these formulas:

Where:

• 1.33 — Standard factor for dry volume to wet volume conversion
• 1440 — Density of cement (kg/m³)
• 1600 — Density of sand (kg/m³)
• ratio — Cement:sand ratio (e.g., 1:3 ratio means enter 3)

Explanation: The formulas account for the proportion of materials in the mix and convert volume to weight using standard densities.

3. Importance of Proper Mortar Mix

Details: Using the correct cement-sand ratio ensures proper strength, workability, and durability of the brickwork. Different ratios are used for different applications (e.g., 1:3 for load-bearing walls, 1:6 for non-load-bearing walls).

4. Using the Calculator

Tips: Enter the total mortar volume needed in cubic meters and the desired cement:sand ratio (enter only the sand part - for 1:4 ratio, enter 4). The calculator will output the required cement and sand in kilograms.

5. Frequently Asked Questions (FAQ)

Q1: How do I estimate mortar volume for a brick wall?
A: Typically, mortar volume is about 25-30% of brick volume. For precise calculation, subtract brick volume from wall volume.

Q2: What are common cement:sand ratios?
A: Common ratios are 1:3 (strong), 1:4 (general purpose), and 1:6 (non-load bearing). The ratio depends on structural requirements.

Q3: Why 1.33 multiplication factor?
A: This accounts for the increase in volume when dry materials are mixed with water (bulking of sand).

Q4: Can I use this for other types of mortar?
A: This is specifically for cement-sand mortar. Lime mortar or other additives would require different calculations.

Q5: How accurate are these calculations?
A: They provide good estimates but actual requirements may vary slightly based on material quality, moisture content, and workmanship.