✨ Report of trials on New Zealand woods
Dimensions in Inches.
| Number of Experiment | Name of Wood | Length | Brdth. | Depth | Specific Gravity | Weight which destroyed | Deflection by this weight. | Breaking Weight. | Ultimate Deflection. | (\frac{lw}{4 ad^2}) | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. 11. | Mapau (Sutonia Australis) | 60 | 1·9 | 1·9 | .923 | 6 cwt. | 6\sfrac{1}{2} in. | 18 cwt. | 3 in. | 1960 | The second specimen was not a good one; the first was warped, but otherwise good. |
| 60 | 1·9 | 1·9 | 0 | 4\sfrac{1}{2} | 2\sfrac{1}{2} | 13 | 3 | 1347 | |||
| 1654 mean. | |||||||||||
| No. 12. | Tawa (Nesodaphne Tawa) | 60 | 1·9 | 1·9 | .685 | 7 cwt. 4 qrs | 2·5 in. | 12 cwt. 5 st | 3·4 | 2021 | The second piece was worm-eaten; the first was a fair one. |
| 60 | 1·9 | 1·9 | 0 | 4\sfrac{1}{2} | 1·1 | 12·25 | 1·3 | 1225 | |||
| 1623 mean. | |||||||||||
| No. 13. | Tawiri | 60 | 1·9 | 1·9 | .888 | 3 cwt. 2 qrs | 0·5 in. | 12 cwt. 2·5 qrs | 0 | 1225 | In the first trial wood broke suddenly at a knot; second specimen cross-grained. |
| 60 | 1·9 | 1·9 | 0 | 5 | 1·6 | 14·7 | 2·2 | 1470 | |||
| 1347 mean. | |||||||||||
| No. 14. | Kahika (Podocarpus Excelsa) | 60 | 1·9 | 3·0 | .562 | 7 | 1·1 | 9 cwt. | 0 | 930 | Broke very short without warning. |
| No. 15. | Towhai (Leiospermum) | 60 | 1·9 | 3·0 | .869 | 14 | 9 | 15 | 3·2 | 1470 | |
| No. 16. | Matai (Dacrydium) | 60 | 1·9 | 3·0 | .653 | 16 | 1·6 | 17 | 1·7 | 1666 | Specimen and fibre both good. |
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Wellington Provincial Gazette 1857, No 4
✨ LLM interpretation of page content
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Report of trials on New Zealand woods
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🌾 Primary Industries & Resources20 December 1856
Woods, Experiments, Strength, Mapau, Tawa, Tawiri, Kahika, Towhai, Matai, Specific Gravity, Deflection, Elasticity, Breaking, Ultimate Deflection