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Last Update: 13-02-2018 [cached @05:45]
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RESAK

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STANDARD NAME

RESAK

(Heavy Hardwood)

FAMILY

Dipterocarpaceae

BOTANICAL NAME

Vatica spp. and Cotylelobium spp.

DISTRIBUTION

Generally distributed sporadically throughout

the well-drained lowland dipterocarp forests

near rivers and hills.

 

GENERAL DESCRIPTION

The sapwood is light coloured and sharply defined in Cotylelobium but not generally so in Vatica. The heartwood is pale yellow when fresh and turning to deep red-brown on exposure in Cotylelobium and brown with a green tinge in Vatica.

Grain is straight or only slightly interlocked.

Texture is fine and even.

Vessels are moderately small to medium-sized, mostly numerous, exclusively solitary, evenly distributed without any clear arrangement; tyloses are variable depending on species.

Wood parenchyma is of both the apotracheal and paratracheal types; apotracheal type as diffuse strands or short irregularly spaced lines; paratracheal type as narrow sheathes to the vessels.

Rays are of two distinct sizes, very fine and medium-sized, the latter distinct to the naked eye on the cross-section.

Intercellular canals are of the vertical type, in diffuse arrangement and occasionally a few canals arranged in short tangential series.

 

USES
Suitable for heavy construction, posts, beams, piling, bridges, mining timber, heavy-duty flooring, boat construction, transmission posts, door and window frames and railway sleepers. The lighter varieties are
suitable for turnery, cabinet works, high grade joinery,interior fittings and sliced veneer.  

  

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