Home & Construction5 min read
How Much Paint Do I Need? A Room-by-Room Method
Paint litres = wall area ÷ coverage per litre × coats. 120 m² at 10 m²/L over 2 coats needs 24 L. Includes openings, waste and tin sizing.
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26 articles
- Home & Construction4 min read
How Many Pavers Do You Need for a Patio?
A 36 m² patio laid with 0.18 m² pavers needs 200 pieces before cuts; adding 10% wastage lifts the order to 220. Learn the area-based method.
- Home & Construction4 min read
Pipe Internal Volume in Litres per Metre
A 50 mm bore pipe holds about 1.96 litres per metre, so a 20 m run contains 39.27 L. Use the inside diameter, convert to metres, then multiply by length.
- Home & Construction5 min read
Pool Water Volume: Litres in a Pool by Size
Pool volume in litres = length × width × average depth (all in metres) × 1,000. An 8 m × 4 m pool averaging 1.5 m deep holds about 48,000 litres.
- Home & Construction4 min read
Pump Head to Pressure: 10 m Equals 98.1 kPa
Ten metres of water column exerts 98.1 kPa, about 0.98 bar, from ρ × g × h. Convert head to pressure, and pressure back to head, for any pump.
- Home & Construction4 min read
Rebar Weight: How to Work It Out From Diameter
A 12 mm rebar weighs about 0.89 kg per metre, so a 6 m length is roughly 5.33 kg. See the d²/162 shortcut, a weight chart and how to convert to bars.
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