1. What is a Sand and Cement Calculator for Screed?

Definition: This calculator estimates the volume of mortar needed for floor screed based on area, depth, cement-sand ratio, and bag yield.

Purpose: It helps construction professionals and DIYers determine how much sand and cement is required for screeding projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M \) — Mortar volume (cubic feet)
• \( A \) — Area to be covered (square feet)
• \( D \) — Depth of screed (inches)
• \( R \) — Cement to sand ratio (unitless)
• \( Y \) — Yield per bag of cement (cubic feet per bag)

Explanation: The area and depth determine volume, adjusted by the mix ratio and divided by bag yield to get total mortar needed.

3. Importance of Screed Calculation

Details: Accurate screed calculations ensure proper floor leveling, material efficiency, and cost control for flooring projects.

4. Using the Calculator

Tips: Enter the area in square feet, depth in inches, ratio (e.g., 1:4 mix = 0.25), and yield per bag (typically 1.25 ft³/bag). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine the cement-sand ratio?
A: Common ratios are 1:3 to 1:5 cement:sand. Enter as decimal (1:4 = 0.25).

Q2: What's a typical yield per cement bag?
A: Standard is 1.25 ft³ per 50kg bag, but check your specific product.

Q3: How do I convert depth from inches to feet?
A: The calculator automatically converts inches to feet in the formula.

Q4: Does this include wastage?
A: No, add 5-10% extra to account for spillage and uneven surfaces.

Q5: Can I use this for different mix designs?
A: Yes, just adjust the ratio value accordingly for your specific mix.