7×3″ C24 Timber Rough Sawn Whitewood (175×75 mm) – 5.4 m
€53.62
In stock
| Quantity | Discount (%) | Price |
|---|---|---|
| 1 - 39 | — | €53.62 |
| 40 - 80 | 4% | €51.48 |
| 81+ | 8% | €49.33 |
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Product specification
- Length
- 5400 mm
- Width
- 175 mm
- Thickness
- 75 mm
- Weight
- 33.31 kg
- Material
- Timber
- Wood Type
- Softwood
Whitewood Timber
7×3 whitewood, 175 by 75 mm, is a heavy beam section for longer purlins, deep trimmers, main bearers and openings where a 6×3 will not reach. Strength-graded to C24 and kiln-dried below 22% moisture content, every length carries the specifications needed for sign-off. It comes in 4.8 m and 5.4 m lengths. Stocked in our warehouse for delivery across Ireland.
Why Whitewood?
Adding 25 mm of depth to a 6×3 buys a surprising amount, because bending capacity rises with the square of the depth rather than in step with it. In practice that means a 7×3 will often carry the same load over a noticeably longer span, which can remove a prop or an intermediate support from the design.
Installation guidance
Long beams need lateral restraint at the top edge, from the rafters, joists or decking that bear on them, otherwise they can buckle sideways under load well below their bending capacity. Bolt any built-up connection through with washers both sides. Where a beam is supported on a post, use a proper seat or bracket rather than end-bearing on the post top alone, which relies on the fixings to hold everything in line.
Finishing & maintenance
Untreated whitewood belongs in a dry roof space or an enclosed structure. An exposed purlin, a beam in a carport or a bearer near ground level needs the treated equivalent from our C24 treated timber range. Handle with care in storage: at over 50 kg for the longest lengths, dropping one end is enough to shake out a shake along the grain. Browse all C24 timber beams and joists, from 4×3 up to 9×3. To compare sawn and treated sizes side by side, see our construction timber page.