Association standard grades of hardwood lumber; by Hardwood manufacturers' association of the United States

Author:Hardwood manufacturers' association of the United States. [from old catalog]
Language: eng
Format: epub, pdf
Tags: Lumber, Hardwoods
Publisher: [Cincinnati]
Published: 1918-03-25T05:00:00+00:00

ASH

General Instructions and the following rules are to govern the inspection:

Bright sap is no defect in any grade.

Standard grades: Firsts and Seconds, Selects, No. 1 Common, No. 2 Common, No. 3 Common, No. 4 Common.

Thicknesses: Standard.

Firsts and Seconds (Fas).

Firsts and Seconds are combined as one grade.

Lengths: 8 feet and over, admitting 15 % of odd lengths; 20% may be 8, 9 and 10 feet, and not to exceed 5% under 10 feet.

Widths: 6 inches and over.

Thicknesses: Standard.

Firsts shall be 6 inches and over wide, 10 feet and over long, and will admit standard defects as follows:

6 and 7 inches wide, none.

8 inches and over wide, one.

Seconds are 6 inches and over wide, 8 feet and over long, and will admit standard defects as follows: 6 to 7 inches wide, one. 8 to 10 inches wide, two.

11 to 13 inches wide, three.

14 to 16 inches wide, four.

As widths increase, defects may increase in proportion.

Splits not to exceed one-sixth the length of the piece admitted and to be considered as one standard defect and not over 20 % of the whole in either quality may be so split.

Selects.

Lengths: 6 ft. and over, admitting 15% of odd lengths, not over 30% under 12 ft. and not to exceed 5% of 6 and 7 ft.

Widths: 5 inches and over.

Thicknessess: Standard.

Bright sap is not a defect.

Inspection to be made from the good side of the piece. Pieces 6 ft. and 7 ft. must be clear one face and sound on the reverse side.

Pieces 6 inches and over wide, 8 ft. and over long, must grade not below seconds on the best face. The reverse side of pieces 8 ft. and over long, must work at least 80% sound.

This grade may also include pieces other than those described above, below the grade of seconds, that will work at least 80% clear face, as follows: 12 ft. and shorter, 2 cuttings; 13 ft. and longer, 3 cuttings.

The smallest cutting allowed must contain 144 square inches. It must not be shorter than 18 inches, nor narrower than 5 inches.

No. 1 Common.

Lengths: 4 feet and over, admitting 15 % of odd lengths; 25% may be 4, 5, 6, 7 and 8 feet, and not to exceed 5% under 8 feet.

Widths: 4 inches and over.

Thicknesses: Standard.

4-6-foot lengths must be clear one face up to 8 inches wide; over 8 inches wide will admit one standard defect.

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