Name: 
 

Forestry - Timber Cruising Test


True/False
Indicate whether the statement is true or false.
 

 1. 
By measuring DBH and height for two or more consecutive years , the average % increase in production can be measured.     
 

 2. 
Selling timber by weight is becoming common in the pulp and paper industry, and is fast replacing dimensional measurements.
 

 3. 
The Tree Caliper is the most accurate instrument for measuring DBH.
 

 4. 
Trees with heart rot ( rotting of the center of the trunk ) should be cruised and counted in the tree tally.
 

 5. 
If a tree to be used for sawtimber has a DBH of 7” , should it be cruised and added to the tally?
 

 6. 
When measuring DBH on tree that is growing on a steep slope, measure from the ____ side of the tree.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 7. 
A survey of forest land to locate timber and estimate its quantity by species, quality, size, or other characteristics is called ____.
a.
estimating
c.
cruising
e.
site indexing
b.
grading
d.
guessing
 

 8. 
When cruising timber to be used for lumber, the number of ____ is estimated.
a.
board feet
c.
cords
e.
logs
b.
pulpwood sticks
d.
cubic feet
 

 9. 
When cruising a timber stand for pulpwood, the number of ____ is estimated.
a.
board feet
c.
cords
e.
logs
b.
pulpwood
d.
cubic feet
 

 10. 
A board foot is the volume of wood equal to _____.
a.
1” X  12” X 1”
c.
12” X  12” X 1”
e.
12” X 12” X 1’
b.
1” X  12” X 12”
d.
1’ X 12” X 1’
 

 11. 
The formula for calculating the number of board feet in a board or stack of lumber is ____.
a.
No. of boards X thickness ( in “ ) X width ( in “ ) X length ( in “ ) divided by 12
b.
No. of boards X thickness ( in “ ) X width  ( in “ ) X length ( in “ ) X 12
c.
No. of boards X thickness ( in “ ) X width ( in “ ) X length ( in ‘ ) divided by 12
d.
No. of boards X thickness ( in “ ) X width ( in “ ) X length ( in ‘ ) X 12
e.
No. of boards X thickness ( in “ ) X width ( in “ ) X length ( in ‘ ) divided by 144
 

 12. 
A cord, including the air space between the logs, contains ____ cubic feet.
a.
27
b.
144
c.
 128
d.
169
e.
85
 

 13. 
Timber cruising skills are not important to which of the following?
a.
Loggers and sawmill operators
b.
Farmers and landowners
c.
Foresters and timber buyers
d.
Conservationists
e.
All of these need timber cruising skills
 

 14. 
Which of the following would least justify a 100% cruise?
a.
A large stand of low value trees
d.
A small stand of high value trees
b.
A large stand of high value trees
e.
A small stand of low value trees
c.
A small woodlot of low value trees
 

 15. 
Trees included in a timber cruise are usually not measured to determine the trees’ _____.
a.
height
b.
age
c.
diameter
d.
volume
 

 16. 
A tree with a DBH of 13.2 would be included in which DBH group?
a.
12”
b.
13”
c.
13.2”
d.
14”
e.
15”
 

 17. 
A tree with a DBH of 16.9” would be included in which DBH group?
a.
15”
b.
16”
c.
16.9”
d.
17”
e.
18”
 

 18. 
Which of the following tools does not measure DBH?
a.
Biltmore stick
c.
Steel tape
b.
Diameter tape
d.
Tree caliper
 

 19. 
The basal area of the tree is measured ____ above the ground.
a.
1 foot or whatever the stump height is to be
b.
DBH or 4-1/2 feet
c.
the narrow end of the log
d.
8” for sawtimber and 4” for pulpwood sticks
e.
according to its use, in a variety of places
 

 20. 
Basal area is often used for all of the following applications except _____.
a.
the degree of stocking a stand of trees
b.
the amount of the timber to remove in thinning an overstocked stand
c.
timber volume calculations
d.
determining tree height
 

 21. 
Basal area is the ___ of the tree at DBH.
a.
cross sectional number of square inches
c.
cross sectional number of square feet
b.
volume of an 8 foot log in cubic inches
d.
volume of a 16 foot log in square feet
 

 22. 
The formula for calculating basal area is ____.
a.
3.14 ( PI ) X DBH in inches
c.
3.14 ( PI ) X radius squared
b.
3.14 ( PI ) X DBH squared
d.
DBH squared X height
 

 23. 
which tool does not measure tree height?
a.
Clinometer
c.
Abney level
e.
Haga altimeter
b.
Scale stick
d.
Stadia rod
 

 24. 
DBH of a standing tree is measured ____.
a.
inside the bark
d.
then 1” is subtracted for the bark
b.
outside the bark
e.
then 2” is subtracted for the bark
c.
inside sapwood
 

 25. 
The tool called the Cruiser’s Stick in the north is called the ____ in the south.
a.
Biltmore Stick
c.
Lumber Scale Stick
b.
Tree Scale Stick
d.
Log Scale stick
 

 26. 
When determining DBH, you should ____.
a.
measure the smallest possible diameter
b.
measure the widest possible diameter
c.
measure the narrowest and widest diameters and then average the two measurements
d.
measure anywhere, DBH is only an approximate measurement anyway
 

 27. 
A 1/5 acre plot has a radius of ____ feet.
a.
16.65
b.
37.24
c.
52.66
d.
66.66
e.
72.25
 

 28. 
After determining the amount of limber or pulpwood in a 1/5 acre plot, you need to multiply by ___ to convert to a per acre basis.
a.
.2
b.
.5
c.
5
d.
10
e.
50
 

 29. 
The minimum DBH pulpwood is ____ inches.
a.
4
b.
5
c.
6
d.
8
e.
10
 

 30. 
The minimum top diameter for pulpwood is _____ inches.
a.
4
b.
5
c.
6
d.
8
e.
10
 

 31. 
The minimum DBH for sawtimber is ____ inches.
a.
6
b.
8
c.
10
d.
12
e.
16
 

 32. 
The minimum top diameter for sawtimber is _____ inches.
a.
6
b.
8
c.
10
d.
12
e.
16
 

 33. 
____ cubic feet of actual wood, not including air space, is equal to one cord of pulpwood.
a.
128
b.
133
c.
90
d.
75
e.
64
 

 34. 
Timber and large stacks of lumber are usually sold on the basis of MBF or MBM, which stands for ____.
a.
million board feet
c.
thousand board feet
e.
many board feet
b.
mega board feet
d.
hundred board feet
 

 35. 
Which of the following log rules is considered to be most accurate?
a.
Scribner
c.
International
b.
Doyle
d.
All 3 are equally accurate
 

 36. 
The Tree Scale Stick, also called the Cruiser’s Stick or Biltmore Tree Scale Stick contains which two measuring devices?
a.
Biltmore stick to measure DBH and clinometer to measure tree height
b.
Diameter tape to measure DBH and Abney level to measure tree height
c.
Diameter tape to measure DBH and Merit hypsometer to measure tree height
d.
Biltmore stick to measure DBH and Merit hypsometer to measure tree height
e.
Tree caliper to measure DBH and clinometer to measure tree height
 

 37. 
In timber cruising, some trees must have deductions made because of certain defects. Which of the following is not a cause for this type of deduction?
a.
Excessive knots, taper, and crook
b.
Fire and lighting scars and catfaces
c.
Stem and butt rots
d.
Beetle holes, blue stain, heart shake, pitch seam or split
e.
Wilting or defoliation of leaves
 

 38. 
When cruising large stands or if available time is short, a ____ cruise may be made.
a.
partial
c.
total
e.
whole tract
b.
variable
d.
percentage
 

 39. 
A common partial cruise for a 100 acre stand would be a ____ % cruise.
a.
10
b.
20
c.
33
d.
50
e.
80
 

 40. 
Timber stands over 100 acres are usually given a ____% to _____% partial cruise.
a.
5 to 10
b.
20 to 25
c.
30 to 40
d.
50 to 60
e.
60 to 70
 

 41. 
Timber stands of less than ____ acres usually receive a 100% cruise.
a.
2
b.
5
c.
10
d.
20
e.
40
 

 42. 
If an 80 acre stand is to receive a 20% cruise, how many 1/5 acre plats must be cruised?
a.
20
b.
40
c.
80
d.
120
e.
60
 

 43. 
If a 20 acre stand is to receive a 50% cruise, how many 1/5 acre plots must be measured?
a.
10
b.
20
c.
30
d.
40
e.
50
 

 44. 
An average tree cruise is when you measure one tree and multiply the results by the number of trees in the stand, this method is most practical on _____.
a.
uniform tree stands
d.
mixed conifers and hardwoods
b.
uneven aged stands
e.
rainy days
c.
rough topography
 

 45. 
When cruising by the point sampling method, the tool used is the_____.
a.
jacob
c.
bark borer
e.
wedge prism
b.
target
d.
stereoscope
 

 46. 
If a tree to be harvested had an old barbed wire fence on it and the wire is in the wood up to 4 feet high, you should measure the DBH at _____.
a.
4 1/2 feet from the ground
d.
6 inches above the highest wire
b.
8 1/2 feet from the ground
e.
None, this tree should not be harvested
c.
As high as you can reach
 

 47. 
Which method of cruise is usually considered the least accurate?
a.
100% total cruise
d.
Eyeball (ocular ) cruise
b.
Partial cruise
e.
All are equally accurate
c.
Average tree cruise
 

 48. 
If you have 2000 board feet of timber and the value is $300/M, what is the total value of the timber.
a.
$300
b.
$600
c.
$2,000
d.
$3,000
e.
$6,000
 

 49. 
In the south, pulpwood sticks are ____ long.
a.
8 feet
c.
6 feet 6 inches
e.
8 feet 4 inches
b.
10 feet
d.
5 feet 3 inches
 

 50. 
When measuring tree height with an Abney level, the user usually stands ____ feet from the tree being measured.
a.
66
b.
33
c.
100
d.
128
e.
132
 



 
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