Grade Rules

Question 1

When can a log be given grade Z

Answer 1

Where the heart rot or the hole runs the entire length of the log and the residual wood is less than 50%
When the rot deductions cause the log to be less than 1.2m
Also when sap rot or charred wood is visible and the top diameter is less than 10 cm.

Question 2

1. Lumber HemBal grade code D

Answer 2

A minimum 5 m log with 33cm or more radius
Where at least 75% of the gross scale can be manufactured into merchantable lumber
And 50% or that lumber is clear

Question 3

1. Lumber fir/pine grade code D

Answer 3

A log must be 5m or more in length and have a radius of 38cm or more
Where at least 75% can be manufactured into merchantable lumber
And at least 50% of that lumber will be clear.

Question 4

1. Lumber cypress grade code D

Answer 4

The log must be 4m or more and have a radius of 30cm or more
Where at least 75% can be manufactured into merchantable lumber
And at least 50% of that lumber will be clear.

Question 5

1. Lumber spruce grade code F

Answer 5

A log must be 4m or more in length and 38cm or more in radius
Where at least 75% can be manufactured into merchantable lumber
And at least 50% of that lumber will be clear.

Question 6

1. Lumber cedar grade code D

Answer 6

A log 5m or more in length and 30cm or more in radius
Or a slab 5m or more in length and 25cm in radius and 38cm or more in thickness
Where at least 75% can be manufactured into merchantable lumber
And at least 50% of that lumber will be clear.

A log must be 5m or more in length and 60cm or more in radius where at least 66% can be manufactured into merchantable lumber.
And at least 50% of that lumber will be clear.

Question 7

2. Lumber HemBal grade code F

Answer 7

A log must be 5m or more in length and 25cm or more in radius
Where at least 75% can be manufactured into merchantable lumber
And at least 25% of that lumber will be clear.

Question 8

2. Lumber cedar grade code F

Answer 8

A log must be 5m or more in length and 25cm or more in radius, or a slab 5m in length, 25 cm in radius and 38 cm or more in thickness
Where at least 75% can be manufactured into merchantable lumber
And at least 25% of that lumber will be clear.

Question 9

2. Lumber fir pine grade code F

Answer 9

A log must be 5m or more in length and 30cm or more in radius
Where at least 75% can be manufactured into merchantable lumber
And at least 25% of that lumber will be clear.

Question 10

5. Chipper HemBal, grade code U

Answer 10

5m log or more in length,
5-7cm in radius where at least 75% of the gross scale can be manufactured into lumber
8-18cm in radius where at least 66.66% of the gross scale can be manufactured into lumber

3. 8m in length and 19cm or more in radius where at least 50% of the gross scale can be manufactured into lumber
   - 35% of the lumber is merchantable

Question 11

6. Chipper All coniferous, grade code X

Answer 11

A log 3 m or more in length and 5 cm or more in radius
Where at least 33.33% of the gross scale can be manufactured into lumber
And at least 35% of the lumber is merchantable

Logs 25cm radius and over can have 2 knots every 3m

Question 12

7. Chipper all coniferous, Y grade

Answer 12

Logs lower that utility and higher in grade than firmwood reject