To use in park Board Length directions
Measuring
Board Feet
•Wood is
measured in terms of board feet
•A board foot
is a board that is one foot wide, one foot long and one inch thick
•How many
board feet are in a board that is 6 inches wide, 10 feet long and one inch
thick?
•How many
board feet are in a stack of 20 oak boards each of which are 8 feet long, 9
inches wide and 2 inches thick?
1.
wrap a tape around the tree at 4.5 feet (chest
High) from the ground and measure the circumference in inches
_____________________________
2.
Find the diameter
(diameter=
circumference/3.14)
______________________________
3.
Stand 66’ from the base of a tree. Use rope to
measure. Make sure the spot where you
stand has the same elevation as the base of the tree.
Look through the viewer until the top of the useable tree is
in sight. The clinometer will give a reading in percent (%) at the index line.
This number is called the A (+) reading.
4.
Look through the viewer until the bottom of the
trunk is in sight and read the percent at the index line. This is called the B
(-) reading.
5.
Subtract A(+)- B(-)
6.
Subtract the bottom reading from the top reading
and multiply this by your horizontal distance from the base of the tree.
For example:
A(+) = 63%
B(-) = -7%
Distance from Tree Base = 66’
63% - (-7%) = 70%
A.70 x 66’ = 46.2’ tree
height.
7.
Convert the tree diameter from inches to feet.
(Divide by 12)
8.
Half of the diameter is the radius (r) (divide by 2)
9.
The area of a circle is determined with the
formula, A = πr2
10.
The cubic
feet of lumber is calculated with:
2.
Diameter____________________________________________
3.
A(+)
reading __________________________________________
4.
B(-)
reading___________________________________________
5.
A(+)-
B(-)______________________________________________
6.
Tree
height (Answer of line 5) X 66=________________________
7.
Diameter/12___________________________________________
8.
Radius
(diameter/2)_____________________________________
9.
Area
of circle
___________________________________
10. Cubic ft of lumber Area (ft) X height(ft)__________________
WATER QUALITY FIELD TRIP FORM
Field Data Collection Sheet for Water Quality
1. Use probe 1 to measure the temperature of the water
sample. Record the value (in ºC) on line below.
_______________________________________ ºC
2. Collect DO data. (probe 2)
a. Remove the probe 2 out of the distilled water bottle (remember
you must loosen the top before pulling it out of the bottle. Place the tip of
the probe into the water sample being tested. Submerge the probe tip to a depth
of 4–6 cm.
b. Gently stir the probe in the water sample. Note: It is
important to keep stirring until you have finished collecting data.
c. Continue stirring and data collection until the readings
have been relatively stable (stable to the nearest 0.2 mg/L) for about 30 seconds,
then record DO Reading on line.
_____________________________________ mg/L
4. Determine the percent saturation of DO for the water
sample using your DO value and the formula and record on line below
% saturation = (actual DO reading / Saturated DO reading
from Table 4 supplied by teacher) X 100
______________________________________%
5. Collect turbidity data .
a. Turbidity Sensor (probe 3) Allow the powered Turbidity
Sensor to warm
up for five minutes.
b. Calibrate the sensor – tap turbidity sensor click on
calibrate
Wipe off milky looking container and put in sensor lining up
triangles
Click calibrate now
Enter 100 then click keep
Remove milky looking container
Put distilled water in empty glass to line container wipe
off and put in sensor lining up triangles
Enter 0 in second box then click keep. Then click ok
c. Empty distilled water from container then fill your container
with your water sample is exactly at the top of the line on the container.
d. Wipe off container and put in sensor lining up triangles
e. Measure the turbidity of the water sample. Record the
value (in NTU) on line below.
____________________________NTU
6. Use a pH Sensor (probe 4) to measure the pH of the water
sample. Record the value on line below.
______________________________________
7. Take PH probe (probe 4) out and replace it with the
conductivity probe. Use a Conductivity Probe to obtain the total dissolved
solid (TDS) value for the water sample. Have the switch on the Conductivity
Probe box set to 0–2000 μS/cm(the bottom setting) record the value on line
____________________________________ μS/cm
8. Divide answer for #5 by 2 to convert to mg/L (this number
will be used to find the TDS q-value
_______________________________________ mg/L (do step in classroom)
CHARTS TO FIGURE OUT WATER QUALTY IN CLASS
Made copies of charts 6-12 in experiment 4
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