1. What is Mortar Calculation?

Mortar calculation determines the quantities of cement and sand needed for a specific volume of mortar mix. It's essential for construction projects to ensure proper material ordering and mix proportions.

2. How Does the Calculator Work?

The calculator uses these formulas:

Where:

• 1.33 — Dry mortar factor (accounts for voids)
• 1440 — Cement density (kg/m³)
• 1600 — Sand density (kg/m³)
• ratio — Cement:sand ratio (e.g., 4 for 1:4 mix)

Explanation: The formulas calculate the proportional volumes of cement and sand based on the mix ratio, then convert to weight using material densities.

3. Importance of Accurate Calculation

Details: Proper mortar calculation ensures structural integrity, prevents material wastage, and helps maintain consistent mix quality throughout the project.

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 mix). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the 1.33 factor in the formula?
A: This accounts for the dry volume of mortar being about 33% more than the wet volume due to voids in the sand.

Q2: What are typical cement:sand ratios?
A: Common ratios are 1:3 (rich mix) to 1:6 (lean mix), with 1:4 being typical for general brickwork.

Q3: Why calculate by weight instead of volume?
A: Weight measurements are more accurate and consistent, especially for cement which can compact in storage.

Q4: How does moisture content affect sand quantity?
A: The calculation assumes dry sand. Wet sand weighs more due to water content, but the solid volume remains the same.

Q5: Can this be used for concrete calculations?
A: No, concrete requires additional calculations for aggregate and different mix design considerations.