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Myapao
Myapao (Alphitonia zizyphoides)

Family: Rhamnaceae

Common names: Doi, Myapao, Uakatan

Distributed in: Fiji [Polynesia], Fiji (Oceania and S.E. Asia)

Distribution overview: Fiji

Common uses: Balusters, Bedroom suites, Blockboard, Boxes and crates, Building construction, Building materials, Cabinetmaking, Carvings, Casks, Construction, Cutting surfaces, Decorative plywood, Domestic flooring, Drawer sides, Excelsior, Flooring, Furniture , Furniture, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Light construction, Living-room suites, Millwork, Moldings, Novelties, Office furniture, Packing cases, Paneling, Parquet flooring, Plywood, Pulp/Paper products, Pulpwood, Radio - stereo - TV cabinets, Stairworks, Stringers, Sub-flooring, Toys, Trimming, Turnery, Veneer, Wainscotting, Walking sticks, Woodwork

Product sources: Red alder is the most common and important of the hardwoods in the Pacific Northwest.Red alder is rather scarce in the veneer form, but is abundant as lumber. Supplies of the inexpensive lumber are rather plentiful, particularly along the west coast of the United States.

Environment profile: Status unknown in many of its growth areas

Tree size: Tree height is 20-30 m

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodPink, Pinkish.The grain isStraight, the textureMediumand the lusterMedium

Natural durability: Susceptible to marine borer attack, Susceptible to wood staining fungal attack

Odor: No specific smell or taste

LightInduced Color Change: Darker

Drying Defects: No surface checking, Slight twist/warp

Ease of Drying: Thinner boards (<1") dry easily

Comments: General finishing qualities are rated as good

Boring: Moderately easy

Carving: Fairly Easy to Very Easy

Cutting Resistance: Low resistance to sawing

Gluing: Surface Preparation

Mortising: Support material during mortising to prevent break out.

Moulding: Good moulding properties

Movement in Service: Good moulding properties

Nailing: Pre-boring recommended, Tends to split during nailing

Planing: Planes well, to a good finish

Resistance to Splitting: Poor

Response to hand tools: Responds well to hand tools

Veneering qualities: Veneers easily, Veneers moderately easy

Screwing: Pre-boring recommended, Recommend pre-boring; Turning: Good results

Polishing: Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,43
Density 608 kg/m3
Bending Strength 652 974 kg/cm2
Crushing Strength 37 67 kg/cm2
Hardness 523 kg
Impact Strength cm
Shearing Strength 140 kg/cm2
Stiffness 113 127 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 4 %
Weight 592 496 kg/m3
Maximum Load cm-kg/cm3
Toughness 148 cm-kg
Static Bending 373 516 kg/cm2
Item Green Dry English
Bending Strength 9284 13867 psi
Crushing Strength 529 960 psi
Density 38 lbs/ft3
Hardness 1154 lbs
Maximum Crushing Strength 4123 7239 psi
Shearing Strength 2003 psi
Static Bending 5312 7340 psi
Stiffness 1608 1810 1000 psi
Toughness 129 inch-lbs
Specific Gravity 0.43
Weight 37 31 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 8 %

Max. crushing strength = medium 1
Bending strength (MOR) = medium 0
Modulus of Elasticity = moderate
Density (dry weight) = 38-45 lbs/cu. ft.
Shrinkage, Tangential = fairly large
Shrinkage, Radial = moderate
Shearing strength (parallel to grain) = medium
Shearing strength (parallel to grain) = low
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = low
Shrinkage, Tangential = small
Shrinkage, Tangential = moderate
Density (dry weight) = 31-37 lbs/cu. ft.
Bending strength (MOR) = low

Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6Bolza, 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.,62Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38Fiji Forestry Department,1970,The Properties and Potential Uses of Doi (Alphitonia zizyphoides) A,Summary of C.S.I.R.O. Investigations,Fiji Timbers and their Uses No.45, Department of Forestry, Suva, FijiFiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Keating, 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
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