Type of Sawn Timber (Keruing)
The Standard Malaysian Name for the timber of Dipterocarpus spp. (Dipterocarpaceae). Vernacular names applied include keruing (Peninsular Malaysia, Sabah and Sarawak) with various epithets, as well as other localised names which are too numerous to list here. The sapwood is lighter in colour than the heartwood and is invariably with a tinge of grey. The heartwood is red-brown to purple-red and darkens on exposure. The surface of the timber may be rather resinous and sticky when handled. Keruings that are believed to give the best yield of oleo-resin are D. cornutus, D. crinitus, D. grandiflorus, D. hasseltii and D. kerrii.
The Standard Malaysian Name for the timber of Dipterocarpus spp. (Dipterocarpaceae). Vernacular names applied include keruing (Peninsular Malaysia, Sabah and Sarawak) with various epithets, as well as other localised names which are too numerous to list here. The sapwood is lighter in colour than the heartwood and is invariably with a tinge of grey. The heartwood is red-brown to purple-red and darkens on exposure. The surface of the timber may be rather resinous and sticky when handled. Keruings that are believed to give the best yield of oleo-resin are D. cornutus, D. crinitus, D. grandiflorus, D. hasseltii and D. kerrii.
Charactieristic of sawn timber (Keruing)
- DENSITY : It is a Medium Hardwood with 690-945 kg/m3 density in air dry (Peninsular Malaysia) and 595-865 kg/m3 desntisty in air dry (Sabah)
- NATURAL DURABILITY : Depending on the species is moderately durable to non-durable under exposed conditions in the tropics.
- PRESERVATIVE TREATMENT : It is very easily treated with preservatives.
- TEXTURE : Texture is moderately coarse to coarse but even, with straight to deeply interlocked grain.
- AIR DRYING: The timber generally seasons well with some end-splitting and surface-checking as the main defects. The
Additional Info woods
- STRENGTH PROPERTIES : Strength Group B (Engku, 1988b) or SG 5 (MS 544:Part 2:2001).
- MACHINING PROPERTIES : The timber of some species is easy to work, while that of others is moderately easy and some species are classified as slightly difficult. Planing is easy to slightly difficult and the finish is generally smooth.
- USES : This timber is suitable for heavy construction, posts, beams, joists, rafters, ship and boat building (keels, keelsons and framework), vehicle bodies (framework, floor boards and planking), container flooring and when treated, suitable for railway sleepers, harbour works, bridges, power-line poles and telegraph poles.
Other type of sawn timber
Collaboration
