MM-L-736D
Type II lumber, excluding "A" and "B" finish grades. Unless otherwise specified (see 6.2), lumber
3.3.2
shall conform to the following average moisture content requirements, with no piece to exceed the average
moisture content by more than 3 percent.
THICKNESS
AVERAGE MOISTURE CONTENT
4/4" and thinner
19 percent or less
5/4"
22 percent or less
6/4"
24 percent or less
7/4" and 8/4"
27 percent or less
Over 8/4"
As specified (see 6.2)
When lumber intended for use as framing members is specified (see 6.2) the moisture content shall not exceed 19
percent.
Type III. The moisture content of hardwood flooring shall be not more than 9 percent, except that 5
3.3.3
percent of any quantity submitted for delivery may have a moisture content of not more than 12 percent.
End coating. When green or unseasoned lumber is specified, lumber 4 inches and thicker shall be end
3.4
coated with two coats of ready-mixed paint conforming to SSPC-Paint 25 or with any suitable commercial end
coating equally effective when compared with approved coating in reducing end checking and splitting.
3.5
Surfacing. Lumber shall be rough, dressed or run to pattern, as specified (see 6.2 and 6.4).
3.6
Treatment.
Preservative treatment. When specified (see 6.2), lumber shall be preservative treated and the
3.6.1
preservative to be used shall conform to the following specifications: AWPA P1/P13, AWPA P2, AWPA P3,
AWPA P5, AWPA P8, or AWPA P9.
3.6.2
Fire retardant treatment. When specified (see 6.2), lumber shall be fire retardant treated in accordance
with MIL-L-19140.
3.6.3
Anti-strain treatment. When specified (see 6.2), all hard-wood lumber which is subject to staining
(see 6.5) shall be anti-stain treated. The treating solution shall be waterbased with the composition,
concentration and application as specified by the chemical supplier.
3.7
Grade certification. Hardwood lumber of like grade, size and species shall be certified for grade by a
certificate of inspection. Unless otherwise specified (see 6.2), certificates for type I and II lumber shall be issued
by a National Inspector of the National Hardwood Lumber Association and certificates for type III lumber shall
be issued by the supplier.
3.8
Marking. Unless otherwise specified (see 6.2), each piece of type I and II lumber, graded and certified
as specified in 3.7, shall be hammer branded by a National Inspector of the National Hardwood Lumber
Association.
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