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Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
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Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 3
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 2
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 0
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Gogbi
Gogbi (Calpocalyx brevibracteatus)

Family: Leguminosae

Common names: Gogbi, Jugbe, Kolei, Kondo, Kotopapa, Kotoprepre, Kpu-eh, Mano, Okpagheze, Otuen, Petepre, Samanta, Teli, Tili, Tre-tre, Yinni

Distributed in: Benin, Cameroon, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, Togo (Africa)

Common uses: Boat building (general), Heavy construction, Poles, Posts, Railroad ties, Tool handles

Tree size: Tree height is 10-20 m

Colors: the heart isRed, Reddish brownand the sapwoodDifferent than heartwood, White to yellow.The grain isStripe (figure), the textureFineand the lusterDull

Natural durability: Resistant to powder post beetles, Susceptible to insect attack

LightInduced Color Change: None

Kiln Drying Rate: Naturally dries slowly

Ease of Drying: Slowly

Tree Identification: Bole/stem form is not buttressed

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Fairly Easy to Very Easy

Nailing: Fairly Difficult to Very Difficult

Planing: Fairly Easy to Very Easy

Response to hand tools: Difficult to machine


Polishing: Fair to Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 849 kg/m3
Bending Strength 954 1473 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1051 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 152 175 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 13576 20956 psi
Density 53 lbs/ft3
Hardness 2318 lbs
Maximum Crushing Strength 6899 9945 psi
Stiffness 2167 2494 1000 psi
Weight 52 42 lbs/ft3

Density (dry weight) = 53-60 lbs/cu. ft
Max. crushing strength = high
Density (dry weight) = 46-52 lbs/cu. ft.
Bending strength (MOR) = high
Modulus of Elasticity (stiffness) = high
Hardness (side grain) = hard

Cooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153Dalziel, J.M.,1937,The Useful Plants of West Tropical Africa,Crown Agents for the ColoniesDudek, S.,1981,Lesser Known Liberian Timber Species,German Agency for Technical Cooperation GermanyIrvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonKeay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, IbadanKryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159Savill, P.S., Fox, J.E.D.,1967,Trees of Sierra LeoneTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Voorhoeve, A.G.,1965,Liberian High Forest Trees,Centre for Agric. Publishing and Documentation, Wageningen
*Come interpretare i dati (manleva su eventuali imprecisioni)