1. What is This Calculator For?

This calculator determines the amount of cement and sand needed for 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:

• Volume — Total mortar volume needed in cubic meters
• Ratio — Cement to sand ratio (e.g., 4 for 1:4 ratio)
• 1.33 — Dry mortar factor accounting for voids
• 1440 — Density of cement in kg/m³
• 1600 — Density of sand in kg/m³

3. Importance of Accurate Mortar Calculation

Details: Proper mortar calculation ensures structural integrity, prevents material wastage, and helps in accurate cost estimation for construction projects.

4. Using the Calculator

Tips: Enter the total mortar volume needed in cubic meters and the desired cement-sand ratio (e.g., enter 4 for 1:4 ratio). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical cement-sand ratio for wall mortar?
A: Common ratios are 1:4 to 1:6 for general brickwork, with 1:4 providing higher strength and 1:6 being more economical.

Q2: Why multiply by 1.33 in the calculation?
A: This accounts for the dry volume of mortar being about 33% more than the wet volume due to voids and shrinkage.

Q3: How do I measure the volume needed?
A: Calculate wall area (length × height) and multiply by average joint thickness (typically 10mm).

Q4: Are these calculations exact?
A: They provide good estimates but actual needs may vary slightly based on workmanship, wastage, and material quality.

Q5: Can this be used for other types of mortar?
A: This is specifically for cement-sand wall mortar. Other mixes (like with lime) require different calculations.