- Measure the faces: 26 × 2.4 × 0.82 × 2 = 102.336 m².
- Apply the coats: 102.336 × 2 = 204.672 m² of coat area.
- Use the coverage rate: 204.672 ÷ 10 = 20.4672 L before allowance.
- Add the allowance once: 20.4672 × (1 + 10 ÷ 100) = 22.5139 L.
- Round containers up: 22.5139 ÷ 4 → 6 containers = 24 L purchased. The 1.4861 L difference is pack rounding, separate from the allowance.
| Item | Quantity | Basis / what to confirm |
|---|---|---|
| Door-face finish, product not selected | 6 × 4 L 24 L total | Illustrative estimate: 22.5139 L including 10% allowance. Assumes 2 coats at 10 m²/L per coat. Confirm product, substrate and finish first. |
| Primer / undercoat | System, coat count and product coverage are unconfirmed. | |
| Door edges | Leaf thickness and edge treatment are unconfirmed. | |
| Frames and architraves | Profiles, measured faces and extent are unconfirmed; excluded from door-face area. | |
| Preparation materials | Surface condition, preparation method and product choice are unconfirmed. | |
| External door finishes | D.05 / D.05A and D.10 / D.10A are excluded; require a separate finish specification. |
Blank quantities are unresolved, not zero. This is an estimating exercise based on a not-for-construction drawing, not an approved purchase order.
Included references: D.01, D.06, D.07, D.08, D.09, D.11, D.12, D.13, D.14, D.15, D.16, D.17, D.18, D.01A, D.06A, D.07A, D.08A, D.09A, D.11A, D.12A, D.13A, D.14A, D.15A, D.16A, D.17A, D.18A.
Source: A401 · revision D · 15 August 2024 · PDF page 16. Each listed leaf is scheduled at 2,400 × 820 mm. The register classifies these as internal; it does not establish the selected leaf finish.
Two broad rectangular faces only. No edges, frames, primer, hardware or external doors. Scheduled nominal dimensions have not been adjusted for undercuts, site manufacture or leaf detailing. Confirm the issued drawings and actual finish before ordering.
Product / finish: __________________________
Checked by / date: _________________________