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LandakLandak
Landak (Vatica stapfiana)

Family: Dipterocarpaceae

Common names: Landak, Oak resak, Resak, Resak laru, Resak mempening, Resak menapening, Resak oak, Sak

Distributed in: Cambodia, Malaysia, Thailand (Oceania and S.E. Asia)

Common uses: Heavy construction, Light construction, Marine construction, Poles

Tree size: Tree height is 20-30 m

Colors: the heart isReddish brown, Yellow to golden-yellow to orangeand the sapwoodRed, Well defined.The grain isStraight, the textureFineand the lusterLow

Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Very durable

Kiln Schedules: Dry at a slow speed

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Distortion, Moderate surface checking

Ease of Drying: Slowly

Blunting Effect: Blunting effect on machining is fairly severe

Boring: Fairly easy to very easy

Cutting Resistance: Easy to saw

Gluing: Fairly Difficult to Very Difficult

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Planing: Poor to Very Poor

Response to hand tools: Easy to machine

Sanding: Fair to Good Results

Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 721 kg/m3
Bending Strength 804 1248 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 752 kg
Impact Strength 71 cm
Shearing Strength 155 kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 5 %
Weight 705 560 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 11442 17761 psi
Density 45 lbs/ft3
Hardness 1658 lbs
Impact Strength 28 inches
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 2205 psi
Stiffness 2167 2494 1000 psi
Weight 44 35 lbs/ft3
Radial Shrinkage 5 %
Tangential Shrinkage 10 %

Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 38-45 lbs/cu. ft.
Modulus of Elasticity (stiffness) = high
Density (dry weight) = 53-60 lbs/cu. ft
Density (dry weight) = 31-37 lbs/cu. ft.
Crushing strength = high
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Tangential = large
Shrinkage, Radial = fairly large
Hardness (side grain) = medium
Bending strength (MOR) = medium
Bending strength (MOR) = high

Brehme, K., et al,1964,Timbers of Ethiopia No.3 White Pear,Forestry Research Inst. Haile Sellassie Univ. Addis AbabaBrown, W.H.,1978,Timbers of the World, No. 4 South East Asia,TRADA, Red Booklet SeriesChowdhury, K.A., Ghosh, S.S.,1958,Indian Woods: Their identification, properties and uses Vol. I,Dilleruaceae to Elaeocarpaceae,Manager of Publications, Delhi, IndiaChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15Foxworthy, F.W., Woolley, H.W.,1930,Durability of Malayan Timbers,Malayan Forest Record,No.8Fundter, J.M.,1982,Names for Dipterocarp timbers and trees from Asia,Pudoc, Wageningen, NetherlandsI. Soerianegara and R.H.M.J. Lemmens (Editors,1993,Plant Resources of South-East Asia 5,(PROSEA, 1,Timber trees: Major commercial timbers,Pudoc Scientific Publishers, Wageningen 1993Lee, Y.H., et al,1974,Commercial Timbers of Peninsular Malaysia,Kuala Lumpur Malaysia Department of Forestry Peninsular Malaysia and,Malaysian Timber Industry BoardLee, Y.H., Lopez, D.T.,1968,The Machining Properties of some Malayan Timbers,Malayan Forester,3,pp194-210Smitinand, T., Et al,1980,A Manual of Diplerocarpaceae of Mainland South-East Asia,Forest Department, ThailandSymington, C.F.,1943,Foresters manual of Dipterocarps,Malaysia Forest Record,No.16Walker, F.S.,1941,Resak Daun Runching (Vatica cuspidata [Ridl] Sym) and Resak Mempening,(Vatica stapfiana [King] V Sl,Malayan Forester 10(4) pp150-4
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