Wood inspector

Item	Green	Dry	Metric
Specific Gravity	0,34	0,37
Density		400	kg/m3
Bending Strength	365	587	kg/cm2
Crushing Strength	17	37	kg/cm2
Hardness		184	kg
Impact Strength	45	58	cm
Shearing Strength		76	kg/cm2
Stiffness	89	106	1000 kg/cm2
Tangential Shrinkage	8		%
Radial Shrinkage	4		%
Weight	416	416	kg/m3
Maximum Load	0,35	0,49	cm-kg/cm3
Toughness			cm-kg
Static Bending	206	378	kg/cm2

Density (dry weight) = 23-30 lbs/cu. ft.
Work to Maximum Load = very low
Toughness-Hammer drop (Impact Strength) = very low
Shearing strength (parallel to grain) = very low
Mor/Bending strength = very low
Modulus of Elasticity (stiffness) = very low
Max. crushing strength = very low
Low
Low
Low
Low
Hardness (side grain) = very soft
Trength properties are moderate, but stiffness is rated as above average. Bending strength is similar to that of Teak, which is considered to be strong. Compression strength parallel to grain, or maximum crushing strength, is medium. It is lower in this property than Teak. The wood is soft, and surfaces may dent easily. It also does not wear well, and mars easily. Weight is medium. Resin from both Red and Black spruce is the source of spruce gum, predecessor of modern chewing gum. The young leafy twigs of the tree were a source of spruce beer after boiling and adding flavoring and sugar.

Boone, R.S., C.J. Kozlik, P.J. Bois and E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Woods: Temperate and Tropical. United States Department of Agriculture, Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-57, Madison, Wisconsin.Brown, W.H.,1978,Timbers of the World: - No.7 North America,TRADACanadian Forestry Service. 1981.Canadian Woods - Their Properties and Uses. Third Edition. E.J. Mullins and T.S. McKnight, Editors. Published by University of Toronto Press, Toronto, Canada.Dallimore, W. and Jackson, A. Bruce,1966,A Handbook of Coniferae and Ginkgoaceae Fourth Ed. Revised by S.G.,Harrison,Edward Arnold (Publishers) Ltd. LondonForest Products Research Laboratory U.K.,1957,A Handbook of Softwoods,Department of Scientific and Industrial Research Forest Products Research,HMSOI.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingLittle, E.L.1980.The Audubon Society Field Guide to North American Trees - Eastern Region.Published by Arthur A. Knopf, New York.Mullins, E.J. and McKnight, T.S.,1981,Canadian Woods Their Properties and Uses,University of Toronto Press 3rd EditionOstrander, M.D.,1974,American Woods Eastern Spruce,USDA, Forest Service American Woods FS-263Panshin, A.J. and C. deZeeuw. 1980. Textbook of Wood Technology, 4th Edition. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.Sarawak Forestry Department,1953,Trees and Timbers of Sarawak and Brunei - Leaflet No. 9 Family,Dipterocarpaceae,Forest Department of SarawakU.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72USDA. 1987. Wood Handbook - Wood as an Engineering Material, Forest Service, Agriculture Handbook No. 72, Forest Products Laboratory, Madison, Wisconsin.USDA. 1988. Dry Kiln Operators Manual, Preliminary Copy. Forest Service, Forest Products Laboratory, Madison, Wisconsin.