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some some

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Veneer Veneer

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26 26

some some

clude: clude:

specifications; specifications;

segregate segregate

log log

their their

or or

ject ject

medium, medium,

for for

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construction construction version version

classes. classes. Veneer Veneer

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major major

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low-quality low-quality

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Birch Birch

scheduled scheduled

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charcoal charcoal

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plywood plywood

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programs. programs.

use, use,

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or or

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yield yield

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1949. 1949.

work work

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data data

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to to l l I TOTAL CUBIC VOLUME J

CONVERSION TO PRODUCTS CONVERSION TO PRODUCTS PRACTICAL IMPRACTICAL Stem, top, or limbwood reasonably Pieces of wood over 4 inches top diameter straight and practically available, inside bark, with crooks, elbows, knotty sec­ with smallest piece 4 feet lon!l ~nd tions, short pieces, etc., that cannot be handled 4 inches in diameter at top, Inside or piled readily; or any section of a tree that bark. is not practically available, or is too rotten to be used for any product.

SUITABLE FOR SA WING & VENEER SUITABLE FOR OTHER TYPES CONVERSION OF CONVERSION Reasonably straight pieces over 4 feet long and 4 inches top diameter inside bark that do not meet sawing specifications. Includes pulp­ wood, charcoal wood, metallurgical wood, fuelwood, and piece products.

LOGS Pieces over 8 inches in diameter at BOLTS top inside bark and over 8 feet long, with other characteristics as Pieces over 6 inches in diameter at top in· specified below. side bark and 4 to 8 feet long, with other specifications for holtwood as given in figure 6.

Veneer logs : see figure 2.

I I

FACTORY TIE OR HEAVY TIMBER LOGS LOCAL·USE OF MISCELLANEOUS LUMBER LOGS Not suitable for factory lumber, but PRODUCT LOGS Suitable for manufacture suitable for manufacture into prod­ Not suitable for manufacture into fac­ into lumber to be graded ucts named, as graded by the Na. tory lumber, ties or timbers, but suit­ under N ationa! Hard· tiona! Hardwood Lumber Associa· able for a variety of uses with low wood Lumber Association tion Rules for Construction lumber, strength, durability, or appearance re· Rules for Standard Lum­ or the Association of American quirements such as secondary farm ber. Detailed specifica­ Railroads Cross Tie Specifications, buildings, box boards, mine ties, indus-. tions for these logs are or American Society fo: Testing trial blocking, and miscellaneous local. given in figure 3. Materials standard specifications for construction. Detailed specifications are structural wood joists and planks, given in figure 5. beams· and stringers, and posts and timbers. Detailed specifications are given in figure 4.

Figure 1.-The products obtainable from the total cubic volume in a birch tree.

27 9.

8.

28 6.

4.

7.

5.

3. 2.

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walnut.

inches

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