Tenn. Comp. R. & Regs. 0080-07-07-.08

Current through December 26, 2024

Section 0080-07-07-.08 - SELLING AND USING CERTIFIED LUMBER

(1) The sawmill providing graded lumber shall provide a written summary that includes the following information:

(a) A declaration that the lumber has been graded by a certified grader.

(b) The name of the wood species, and its design value group as shown on Table 5.

Table 5 Design Values of Species Groups for #2 and Better Grade

Species Group Name	Design Values (psi)
	Bending	Tension Parallel to Grain	Shear Parallel to Grain	Compression Perpendicular to Grain	Compression Parallel to Grain	Modulus of Elasticity		Specific Gravity
	F_b	F_t	F_v	F_{c[PERPENDICULAR]}	F_c[PARALLEL]	E	E_min	G (od m/v)
Bald Cypress	825	450	160	615	900	1,300,000	470,000	0.47
Beech- Birch- Hickory	1,000	600	195	715	750	1,500,000	550,000	0.71
Cottonwood	625	350	125	320	475	1,100,000	400,000	0.41
Eastern Softwoods	575	275	140	335	825	1,100,000	400,000	0.36
Mixed Maple	700	425	195	620	550	1,100,000	400,000	0.55
Mixed Oak	800	475	170	800	625	900,000	330,000	0.68
Mixed Southern Pine	750	450	175	565	1,250	1,400,000	510,000	0.51
Yellow Poplar	700	400	145	420	575	1,300,000	470,000	0.43

(c) The quantity of lumber, the date it was cut and graded, and the name of the grader and the sawmill.

(d) The size (nominal or actual), whether it is rough-sawn or surface/planed, and the moisture content of the lumber when graded.

(2) Upon request, the end user shall provide a copy of the summary, and information about the design values of the lumber shown on Table 5 based on its designated species group shown on Table 6.

Table 6 Species Groups and Component Species, including Species not in the National Design Supplement (*TN Species)

Species Group	Common Name	Scientific Name	Grading Agency***
Baldcypress	Baldcypress	Taxodium distichum	SPIB
Beech - Birch - Hickory	American Beech	Fagus grandifolia	NELMA
	Bitternut Hickory	Carya cordiformis
	Mockernut Hickory	Carya tomentosa
	Nutmeg Hickory	Carya myristiciformis
	Pecan Hickory	Carya illinoinensis
	Pignut Hickory	Carya glabra
	Shagbark Hickory	Carya ovata
	Shellbark Hickory	Carya laciniosa
	Sweet Birch	Betula lenta
	Water Hickory	Carya aquatica
	Yellow Birch	Betula alleghaniensis
	Black Walnut	Juglans nigra	*TN Species
	Black Locust	Robinia pseudoacacia
	Honeylocust	Gleditsia triacanthos

Cottonwood	Cottonwood	Populus deltoides	NSLB
	Basswood	Tilia americana	*TN Species

Eastern Softwoods	Balsam Fir	Abies balsamea	NELMA, NSLB
	Black Spruce	Picea mariana
	Eastern Hemlock	Tsuga canadensis
	Eastern White Pine	Pinus strobus
	Jack Pine	Pinus banksiana
	Red Pine	Pinus resinosa
	Pitch Pine	Pinus rigida
	Red Spruce	Picea rubens
	Tamarack	Larix laricina
	White Spruce	Picea glauca

Mixed Maple	Black Maple	Acer nigrum	NELMA
	Red Maple	Acer rubrum
	Silver Maple	Acer saccharinum
	Sugar Maple	Acer saccharum

	Sycamore	Platanus occidentalis	*TN Species
	Black Tupelo	Nyssa sylvatica
	Water Tupelo	Nyssa aquatica
	Southern Magnolia	Magnolia grandiflora
	Cucumbertree	Magnolia acuminata
	Hackberry	Celtis occidentalis
	American Elm	Ulmus americana
	Rock Elm	Ulmus thomasii
	Slippery Elm	Ulmus rubra
	Black Cherry	Prunus serotina

Mixed Oak	Black Oak	Quercus velutina	NELMA
	Cherrybark Oak	Quercus falcata var. pagodaefolia
	Northern Red Oak	Quercus rubra
	Southern Red Oak	Quercus falcata
	Laurel Oak	Quercus laurifolia
	Pin Oak	Quercus palustris
	Scarlet Oak	Quercus coccinea
	Water Oak	Quercus nigra
	Chestnut Oak	Quercus prinus
	Live Oak	Quercus virginiana
	Post Oak	Quercus stellata
	Swamp Chestnut Oak	Quercus michauxii
	White Oak	Quercus alba
	Bur Oak	Quercus macrocarpa
	Overcup Oak	Quercus lyrata
	Swamp White Oak	Quercus bicolor

Mixed Southern Pine	Longleaf Pine	Pinus palustris	SPIB
	Slash Pine	Pinus elliotti
	Shortleaf Pine	Pinus echinata
	Loblolly Pine	Pinus taeda
	Pond Pine	Pinus serotina
	Virginia Pine	Pinus virginiana

Yellow Poplar	Yellow Poplar	Liriodendron tulipifera	NSLB

	Sweetgum	Liquidambar styraciflua	*TN Species
	Honeylocust	Gleditsia triacanthos
	Blue Ash	Fraxinus quadrangulata
	Black Ash	Fraxinus nigra
	Green Ash	Fraxinus pennsylvanica
	White Ash	Fraxinus americana

Tenn. Comp. R. & Regs. 0080-07-07-.08

New rules filed May 24, 2022; effective 8/22/2022.

Authority: T.C.A. §§ 4-3-203 and 43-28-313.