Properties And Uses of Indonesian Commercial Wood Indonesia | 11/04/2023
Properties And Uses of Indonesian Commercial Wood
Download the attachment for the name of the 120 commercial species are presented in table form which is supplemented with some data regarding their specific gravity, durability, strength, distribution and uses. The specific gravity presented here is the weight-volume ratio of the wood in air-dry condition at approximately 15% moisture content. The durability is grouped into five classes based on the estimated service life of the wood under different conditions and its resistance to insect attack as follows:
Durability Class | I | II | III | IV |
V |
In continuous contact with moist ground | 8 years | 5 years | 3 years |
very short |
very short |
Exposed only to weather but kept fromgetting soaked in water and properly ventilated |
20 years |
15 years |
10 years |
several years |
very short |
Under the roof, not in contact with moist ground and properly ventilated |
Indefinitely long | Indefinitely long | very long |
several years |
very short |
As above but properly maintained and regularly painted |
Indefinitely long | Indefinitely long | Indefinitely long | 20 years |
20 years |
Attack of subterranean termites | none | rare |
rapid |
very rapid |
very rapid |
Attack of powder post beetles | none | none |
not serious |
rapid |
very rapid |
Source:Oey (1951)
The strength is grouped into five classes based on the specific gravity, absolute bending and compression strength as follows:
Strength Class | Spesific Gravity |
Absolute Bending Strength Kg/cm2 | Absolute Compression Strength Kg/cm2 |
I | > 0.90 | >1,100 | > 650 |
II | 0.60 - 0.90 |
725 - 1,100 |
425 - 650 |
III | 0.40 - 0.60 |
500 - 725 |
300 - 425 |
IV | 0.30 - 0.40 |
300 - 500 |
215 - 300 |
V | < 0.30 |
< 300 |
< 215 |
Source: Den Berger (1932)
Distribution key:
The geographical distribution of the species is indicated by the following key:
1. Sumatera
2. Java
3. Borneo
4. Sulawesi
5. Moluccas
6. Lesser Sunda Islands
7. West Irian/Papua
Uses key:
The key to indicate the possible uses of the wood is as follows:
1. Construction
2. Plywood
3. Furniture
4. Flooring
5. Panelling
6. Sleepers
7. Door and window frames
8. Packing material
9. Sporting goods and musical instruments
10. Power and telephone poles
11. Shipbuilding
12. Carvings and handicrafts
13. Fancy veneer
14. Matches
15. Pulp
16. Drafting instruments
17. Pencils
18. Charcoal
19. Medicine
20. Moulding
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Source: Kartasujana, I.& Martawijaya, A. 1973. Commercial woods of
Indonesia, their propertiesand uses Pengumuman no.3 thn 1973. Lembaga
Penelitian Hasil Hutan, Bogor.
NO | FILE NAME | DOWNLOAD |
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1 | Properties_and_uses_of_Indonesian_commercial_wood1.pdf | Download |