Blog
Calculation guides, methodology notes, and worked examples. Page 3 of 3.
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Concrete & Foundations
Cement bags calculator: concrete volume to bags
A cement bags calculator converts a concrete volume into a whole bag count and an estimated cost. This guide covers the method, a worked example, and common mistakes.
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Bathroom
What Size Shower Tray for My Alcove?
An alcove rarely takes a tray of the same number, because fit clearance shrinks the usable opening. This guide explains how shower tray (or shower base) sizing works, with a worked example and the standard sizes to match against.
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Bathroom
Bathroom Renovation Cost Guide & Calculator
How a bathroom renovation cost is built up from area, specification and contingency, with a fully worked example and the pricing mistakes that throw budgets off. Includes a free calculator.
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Bathroom
Bathroom Tile Calculator: How Many Tiles?
A bathroom tile calculator converts floor area, tile size, wastage and unit price into a tile count and a rough materials cost. This guide shows the formula, a fully worked example, and the estimating mistakes that lead to a second trip to the merchant.
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Bathroom
Bath Volume Calculator: How Many Litres Does a Bath Hold?
Working out how many litres a bath holds matters for hot water sizing, heating costs and waste pipe specification. A bath volume calculator turns three measurements into a usable figure in seconds, and this guide shows the maths behind it.
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