C-7 Minimum Product Specifications.pdf

WMNF Supplement Effective 07/28/08

Timber Specifications Listed below are the utilization standards to be used on the White Mountain National Forest. This document will supersede / replace WMNF Supp. 2409.15 – 91-1 dated 09/13/91.

TREE MINIMUM PRODUCT SPECIFICATIONS

Product DBH Length DIB Minimum Net Scale Type (Inches) (Feet) (Inches) in % of Gross Small End (Percent Sound)

Sawtimber:

Aspen 1/ 11.0 8.5 9.6 70% Other Hardwoods 1/ 11.0 8.5 9.6 50%

Spruce & Fir 2/, 3/ 8.0 8.5 6.0 50% White Pine 2/, 3/, 4/ 9.0 8.5 7.6 50% Other Softwoods 2/, 3/ 9.0 8.5 7.6 50%

Non-Sawtimber

Hardwoods 5.0 8.0 4.0 50% Sound 5/ Reasonable Straight 6/

Softwoods 5.0 8.0 4.0 50% Sound 5/

Reasonable Straight 6/

1/ Minimum product will include - One clear face, meet minimum length, diameter, and minimum net scale in % of gross specifications. One clear face will apply to the entire product length.

2/ Minimum product will – meet minimum length, diameter, & minimum net scale in % of gross specifications.

3/ Open grown softwoods (Pine, Spruce, Hemlock or Balsam Fir) should be considered non sawtimber unless otherwise defined within the cruise plan. Open grown is defined as a softwood tree exhibiting excessive limbs, emerging at the base of the tree continuing upwards.

4/ Limb Rule – 1) When the sum of limbs 4” (four inch) or larger in DOB, within a one foot span, exceeds DOB of the main stem at that point; this will be considered a sawtimber stopper; 2) minimum industry standards are (1”x 4” x 6’), so if you have 6' of contiguous wood you have a minimum product length, and a product will be cut from it. If not, then no sawtimber product will be cut and it should be considered non-sawtimber.

5/ Sound applies to rot, voids, and char. Mechanical type defects such as sweep, crook, spider heart, and ring shake shall not be considered.

6/ Reasonably Straight: 1) product between 4.0” – 16.0” will need to fit through a 26-inch diameter cylinder; 2) product from 16.1” – 99.9” will not exceed 16.0”- inches of sweep/crook per minimum length.

Revision 07/17/08