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MOIVI (Cynometra insularis)
Trade Name
Moivi
Scientific Name
Cynometra insularis A.C.Smith
Family
Leguminosae
Common Names
Moivi (Fiji)
Description Of The Tree
Botanical Description
Boles average 12 m in length,but some trees may have poor form.Logs are sinkers.
Natural Habitat
Trees are found in hills and occasionally in semi-swanp forests.
Natural Distribution
Common in Fiji
Non Timber Uses
Moivi is a hard, heavy species considered suitable for constructional timber, where nailing is not involved, in low decay hazard situations. Could be used for permanent heavy construction after treatment.
Wood Identification
Anatomic Description Of Wood
Vessels per mm2 6 to 10 (medium). Occasionally vessels per mm2 less than 6. Tangential diameter of vessel lumina 100 to 150 micras (small). Vessels in radial multiples of 2 to 4. Occasionally axial parenchyma in thick bands. Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma confluent.
Availability
Cites Status
Unrestricted
General Wood Description
Color
Heartwood color ranges from brown to red with black streak common. Sap-wood is pale brown to pink.
COLOR INDEX (1=Black, 7=Light yellow,white)
3
Grain
The grain straight or moderately interlocked.
Texture
Texture is intermediate. Growth rings distinct. Tyloses sparse or absent, deposits common.
Natural Durability
Sapwood is susceptible to Lyctus attack. Heartwood is not durable rated adequate only for hazard 1 end uses. Timber out of ground contact, continuously protected from the weather. Sapwood permeable, heartwood extremely resistant to pressure treatment.
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Internal Growth Stresses
Tension wood may be a feature of some logs.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
7.60
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
9.55
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.5
Total shrinkage Radial (Saturated to 0%MC) (%)
3.0
Recommended Dry Kiln Schedule
Fiji-3
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.5
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1100
Stiffness (MOE) 12%MC (kgf/cm²)
160000
Compression parallel to fiber 12%MC (kgf/cm²)
610
Workability
Sawing
Moivi is harder than normal saw and may be below dressing quality because of black heart and dark fungal staining. Moderately difficult to saw.
Machining
Machining may show slight chipping as a result of interlocked grain. Generally, however, dressed surfaces are of average or better quality. Overall, working properties are reasonable for a hard, heavy timber.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, rails, PACKING, heavy packing, CONTAINERS, chemical storage
Rails
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Heavy Packing
- 47 - Arvores Brasileiras
Containers
- 50 - Properties of imported tropical woods
Chemical Storage
- 52 - Propiedades mecanicas y asociadas del pino insigne (Pinus radiata d.don)
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