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Blunting Effect
Boring
Carving
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Distribution Overview
Drying Defects
Ease of Drying
Environmental Profile
Family Name
Gluing
Grain
Heartwood Color
Kiln Schedules
Luster
Mortising
Moulding
Nailing
Natural Durability
Numerical Data
Odor
Planing
Polishing
References
Regions of Distribution
Resistance to Impregnation
Resistance to Splitting
Response to Hand Tools
Routing & Recessing
Sanding
Sapwood Color
Scientific Name
Strength Properties
Texture
Trade Name
Tree Identification
Tree Size
Turning

Scientific Name
Fagraea gracilipes

Trade Name
Buabua

Family Name
Potaliaceae

Wood Image 1

Common Names
Buabua

Regions of Distribution
Oceania and S.E. Asia

Countries of Distribution  [VIEW MAP]
Fiji [Polynesia], Fiji

Common Uses
Agricultural implements, Beams, Boat building (general), Boat building, Boat building: framing, Building materials, Canoes, Decks, Domestic flooring, Factory construction, Factory flooring, Flooring, Flooring: industrial heavy traffic, Heavy construction, Interior construction, Interior trim, Joinery (external): ground contact, Joists, Lifeboats, Light construction, Marine construction, Mathematical instruments, Millwork, Mine timbers, Moldings, Paneling, Parquet flooring, Piling, Poles, Porch columns, Posts, Precision instruments, Railroad ties, Rough construction, Shipbuilding, Sporting Goods, Structural work, Studs, Sub-flooring, Trimming, Truck bodies, Vehicle parts, Wainscotting

Environmental Profile
Status has not been officially assessed


Distribution Overview
Widely scattered throughout the Indo-Malayan region and the Pacific Islands.

Heartwood Color
Brown
Red
Pink
Yellow to golden-yellow to orange
Brown


Sapwood Color
Green/Grey
White
Paler than heartwood
Sapwood is considered narrow


Grain
Interlocked
Straight
Even

Interlocked
Generally straight, but not always


Texture
Medium
Fine to medium
Medium
Fine

Greasy feel

Luster
High
Lustrous


Natural Durability
Perishable
Non-durable
Very durable
Very durable
Resistant to attack from powder post (Lyctid & Bostrychid) beetles
Resistant to attack from termites (Isoptera)
Pinworms (ambrosia beetles) may be present in the felled log
Good weathering properties
Durable
Durable


Heartwood is resistant to termites but logs are vulnerable to attack by pinhole borers.
The material has good weathering properties.

Odor
Has an odor
No specific smell or taste


Kiln Schedules
Dry at a slow speed


Drying Defects
Distortion
Collapse
Moderate surface checking


Ease of Drying
Fairly Easy
Medium to High Shrinkage
Radial and tangential shrinkage from 1-2%
Moderate


Tree Identification
Bole/stem form is misshapen
Bole/stem form is buttressed


Tree Size
Tree height is 30-40 m


Blunting Effect
Blunting effect on machining is fairly severe
Blunting effect on machining is moderate


Boring
Fair to good results
Fairly easy to very easy
Easy

Surfaces of straight-grained material are generally clean if cutters are kept very sharp.

Carving
Fair to Good Results
Fairly Easy to Very Easy


Arving qualities are generally good, especially in straight-grained material.

Cutting Resistance
Easy to saw
Reported to be hard and dense
Described as heavy
Cutting Resistance with dry wood is difficult


Gluing
Fair to Good Results
Moderate gluing properties
Fairly difficult to glue


Mortising
Fair to Good Results
Fairly Easy to Very Easy
Straight-Grain wood responds best


Moulding
Fair to Good Results
Fairly Easy to Very Easy
Yields clean surfaces
Timber is reported as hard and heavy
Requires very sharp cutting edges


Nailing
Fair to Good Results
Fairly Easy to Very Easy
Holds nails well


Planing
Fairly Easy to Very Easy
Fair to Good Results


The timber is hard and heavy, but it is reported to plane to yield relatively clean surfaces, except when interlocked grain is present.

Resistance to Impregnation
Heartwood is extremely resistant


Resistance to Splitting
Poor


Response to Hand Tools
Responds Readily
Easy to Work
Moderate working qualities

Utting edges may dull rather rapidly since the wood is hard and heavy.

Routing & Recessing
Fairly Easy to Very Easy
Material with interlocked grain requires sharp cutting edges
Hard and heavy wood
Good in both routing and recessing.


Sanding
Fair to Good Results
Contains alkaloids giving it good acid resistance

Green wood sands rather well

Turning
Fair to Good Results
Very Good to Excellent Results
Yields clean surfaces
Requires sharp cutters
Easy to turn


Polishing
Fair to Good Results


The wood has good polishing properties.

Strength Properties
Max. crushing strength = high
Bending strength (MOR) = high
Shearing strength (parallel to grain) = high
Density (dry weight) = 61<
Shrinkage, Tangential = very small
Shrinkage, Radial = very small
Shrinkage, Tangential = small
Density (dry weight) = 53-60
Bending strength (MOR) = medium


Numerical Data
ItemGreenDryEnglish
Bending Strength1432819771psi
Crushing Strength21222445psi
Density61lbs/ft3
Hardness2032lbs
Maximum Crushing Strength775510244psi
Shearing Strength2670psi
Static Bending947710702psi
Stiffness212024321000 psi
Toughness132inch-lbs
Weight6049lbs/ft3
Radial Shrinkage2%
Tangential Shrinkage4%
ItemGreenDryMetric
Bending Strength10071390kg/cm2
Crushing Strength149171kg/cm2
Density977kg/m3
Hardness921kg
Maximum Crushing Strength545720kg/cm2
Shearing Strength187kg/cm2
Static Bending666752kg/cm2
Stiffness1491701000 kg/cm2
Toughness152cm-kg
Weight961785kg/m3
Radial Shrinkage2%

References
Alston, A.S.,1966,Natural Heartwood Durability,Fiji Forestry Department, Suva. Fiji timbers and their uses No. 2

Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6

Bolza, E., Kloot, N.H.,1972,The Mechanical Properties of 56 Fijian Timbers,Australia C.S.I.R.O. Division of Forest Products Technological Paper,No.,62

Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.

Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38

Fiji Department of Forestry,1972,Guide to the use of local timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.55

Fiji Forestry Department,1967,The Properties and Potential Uses of Buabua (Fagraea gracilipes) A Summary,of C.S.I.R.O. Investigations,Fiji Timbers and their Uses No. 14, Department of Forestry, Suva, Fiji

Fiji Forestry Department,1969,Timbers for Flooring A Note on Current & Potential Species,Fiji Timbers and their Uses No.36, Department of Forestry, Suva, Fiji

Fiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71

Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1