1. What is Sharp Sand?

Sharp sand, also known as grit sand or concrete sand, is a coarse sand used in construction projects across the UK. It's commonly used for paving, mortar, and concrete applications due to its excellent drainage properties and strength.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Area \) — The surface area to be covered (in square meters)
• \( Depth \) — The depth of sand required (in meters)
• \( 1600 \) — Standard density of sharp sand (in kg/m³)

Explanation: The calculation multiplies the volume (area × depth) by the density to get the weight in kilograms.

3. Importance of Accurate Calculation

Details: Accurate sand calculation ensures you purchase the right amount of material, avoiding both wastage and project delays from insufficient supplies.

4. Using the Calculator

Tips: Enter the area in square meters and depth in meters. For typical paving projects, a depth of 0.05m (50mm) is common for bedding layers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between sharp sand and building sand?
A: Sharp sand has larger, angular grains making it better for drainage and strength, while building sand is finer and better for bricklaying.

Q2: How do I convert kg to bulk bags?
A: Standard bulk bags hold about 850kg. Divide your total kg by 850 to estimate the number of bags needed.

Q3: Does moisture affect the weight?
A: Yes, wet sand weighs more. The 1600 kg/m³ density is for dry sand - account for 5-10% more if very wet.

Q4: What depth should I use for patio laying?
A: Typically 50-100mm (0.05-0.1m) for the sharp sand bedding layer beneath paving slabs.

Q5: Can I use this for concrete mixes?
A: Yes, sharp sand is suitable for concrete, but remember you'll need to add cement and aggregate in the correct ratios.