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Plywood Calculator — Sheets, Waste & Project Cost

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Section 1 length (ft) Section 1 width (ft) Section 2 length (ft) Section 2 width (ft) Section 3 length (ft) Section 3 width (ft) Sheet length (ft) Sheet width (ft) Waste allowance (%) Price per sheet (optional)

Calculated result

14 sheets

Project area: 400 sq ft

Area with 10% allowance: 440 sq ft

Sheet coverage: 32 sq ft

Show the working

1. Sheet area = 8 × 4 = 32 sq ft.
2. Base sheets = 400 ÷ 32 = 12.5.
3. Apply 10% allowance and round up = 14.

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