BoardCalc is a Palm® OS or
that contains three calculators specifically for working with wood: a
purpose calculator, a log weight/yield calculator, and a board
shrinkage calculator. BoardCalc ‘thinks’ in fractions, feet and inches,
yards, board feet, or metric. It does conversions between metric and
imperial units, decimal and fractions, board feet and areas/volumes,
and makes it a little more comfortable to subtract 5
5/8” from 1’ 3 3/32” or add 5mm to 7/8”.
More info is available on the web at: www.boardcalc.com
- Recent calculations list stores complete
calculations in a sensible format
- User’s saved list - keeps a list of
editable text lines that the user can save from general purpose
calculator, the log weight/yield calculator, or from recent calculations. Each line is
editable, and up to 99 lines can be saved.
- The User's List in a handheld device can be
HotSync'ed and imported into the PC User's List.
- The Palm version works with color or
monochrome devices, on
Palm OS versions 3.0 and above
- The Windows version is compatible with
Windows 98 and above
- Species lists can be sorted alphabetically,
by shrinkage (tangential or radial), by stability (tangential vs
radial shrinkage) or by green weight
- A custom species list can contain new
species, the short list of species you regularly use, or species
edited with your data
General Purpose Calculator -
- Palm version: Two ways to
calculator - one page with buttons
enough to press with a finger, another with everything on one page
(which requires a stylus)
- Works with fractions or decimal
values, converts back and forth with one button press
- Calculates board feet from 2 or 3
dimensions, an area, or a volume
- Easy conversions between: inches /
feet / yards / board
feet / mm / cm / meters for length, area or volume
- Values can be entered as whole/fraction,
decimal or feet/inches/fraction
- Display of fractions can be rounded to
nearest 1/2, 4th, 8th, 16th, 32nd or 64th without changing the accuracy
of the stored value
- A memory register stores, sums and recalls
values. Also has a memory clear button
- Display of feet/inches/fraction can show
inches/fraction below a user-selectable number of feet ( 23 ½”
vs. 1’11 ½”)@
- Percent key add, subtract, multiply or
divide by a percentage.
- Backspace button (a goof doesn’t mean
- Display shows the entire current
calculation (as opposed to a single number as most calculators do)
- Palm version: Graffiti or keypad button input
- Windows version: keyboard or mouse/button
Log Weight/Yield Calculator -
- Estimates the weight of a log, using the small diameter, length
- Calculates the lumber yield of the log in board feet, using the
Doyle, Scribner Decimal C or International 1/4 inch log rule
- Two flavors of the Scribner Decimal C log rule are available:
calculated via formula, or from the Scribner table
- The result of each calculation (weight and yield) is put in the
recent calculations list
- Log Weight and Yield can be put directly into the User's Saved
- Memory buttons can be used to save weight and yield, or keep a
- Density data for over 100 North American species is included in
the Master Species List
Shrinkage Calculator -
- Calculates the change in dimension according to relative humidty
and wood species
- Calculates for either radial or tangential change
- Three dimensions are shown, each at its own relative humidity
- When any dimension or relative humidity is changed, the effect on
all three dimensions is calculated
- Shrinkage data for over 200 species of domestic and imported
species is included in the Master Species List
1) General Purpose
What is it?
The General Purpose
calculator is like most of the other calculators you have used to do
simple math. It is an algebraic input calculator (as opposed to RPN,
Reverse Polish Notation). You enter the first number, then the math
operation (such as '+'), the second number, and then '='. The strength
of this calculator is that it works in fractions or decimal with equal
ease, works with dimensions in inches/feet/yards/metric, converts
metric/inches/feet/yards or fraction/decimal, can round bizarre
sensible values, and calculates board feet from two dimensions, three
dimensions, surface area or volume.
In the Palm version of Boardcalc, there
are two different faces of the
general calculator - the Large-Buttons calculator or the All-In-One
calculator. These both use the same underlying calculator code. The
Large-Buttons calculator is provided so you don't have to drag out a
stylus to do a calculation. This can be especially handy if you use
your PDA in an environment with dust or chemicals. A PDA is much safer
inside a sealed plastic bag, but the stylus isn't accessible then. So
has three lines together which form an area large enough to tap with a
finger. Tapping this will call up the
large-button calculator, and from there all the buttons are large
enough to operate with a finger-tip. The downside of the large buttons
is that there isn't room to put units buttons on the same page, so
extra button presses are required to flip to the units page and select
units. The All-In-One page is more convenient when using a stylus.
How does it work?
Many are the ways to enter values in
- Fractions 3/4
- Decimal -
- Metric - 3.4mm
.75cm 3 3/4m
- Inches/feet - 3.4" .75'
3' 3 3/4"
- Area - 2 sq
ft 3 1/2 sq
m 45.7 sq in
- Volume - 2 cu ft 3 1/2
cu m 45.7 cu in
Fractions use the <sp> (space)
and / (fraction) buttons. For example, to enter two and a half, the
<sp> 1 / 2 are pressed. If using Graffiti® on a Palm
OS device or a keyboard on the Windows version, an 'f'
character represents the fraction symbol, so you would enter 2
<sp> 1 f 2. There are Graffiti equivalents for all the buttons.
Dimensions can be entered in
feet/inches/fraction. If a value includes two whole numbers, it isn't
necessary to include the units - number <sp> number can only be
feet and inches. A fraction on the end of two whole numbers works the
same way (no units required). The following are all legal, and all
represent the same value:
2' 2 1/2"
2 2 1/2"
2 2 1/2 2'
2 1/2 26 1/2"
Multiple dimensions can be entered
for a single calculation using the 'by' button. This can be useful to
calculate area, volume or board feet.
3" by 8' BdFt
2.00 bd ft
3" by 8' by 2
BdFt ] gives 4.00 bd
1 by 2 by 3
= gives 6
1 by 2 by 3 BdFt
gives 0.04 bd
1' by 2" by 3cm
= gives 21
44/127 cu in
Converting a value to a different set
of units is just a matter of entering the number, the original units,
and the new units. If you already have a result of a calculation that
has units, just press the new units. To convert from fraction to
decimal or vice versa, either press the / (fraction) button, or press
the same units again (pressing the 'in' button will flip between
decimal inches and fractional inches, for example):
5 cm in
1.97" (converted 5 cm to
123/127" (converted decimal
inches to fractional inches)
11' 7 3/4" '
feet/inches/fraction to decimal feet)
139.75" (converted decimal
feet to decimal inches)
An area in any units can also be
converted to BdFt, even though BdFt is a volume. The third dimension is
assumed to be 1" (4/4).
If one value in an addition or subtraction has units and the other does
are assumed to have the same units: 5 + 5cm = 10cm. For multiplication
or division, what you see is what you get, in order to correctly keep
track of whether the result is an area, length or volume. 5 x 5cm is
25cm, while 5cm x 5cm is 25 sq cm.
iii) Calculating Board Feet
A board foot is a measure of volume.
The majority of lumber is from 4/4 stock. If only two dimensions
are entered, the third is assumed to be 4/4 when the BdFt button is
pressed. A surface area is converted to board feet the same way, by
assuming a thickness of 4/4. Either the by button or the x (multiply)
button can be used between values when calculating board feet. Any
number entered without units is assumed to be inches.
12" by 8' BdFt
gives 8.00 bd
12 by 8' by 1
BdFt gives 8.00 bd
12 x 8' BdFt
gives 8.00 bd
3cm by 1m BdFt
gives 0.32 bd
8" by 8' by 1"
= gives 768 cu
gives 5.33 bd
gives 5 1/3
A value like 1 123/127" is a bit
difficult to find on a ruler. You can round this value to something
more sensible using a selector on the all-in-one calculator page, to
1/2, 1/4th, 1/8th, 1/16th, 1/32nd or 1/64th. This selector only affects
the value that is shown (the next calculation will not be
rounded). If the displayed value is
rounded, a '~' will show up in front of it to warn you. There will be
no '~' if the value shown is exact, even if rounding is turned on.
The numerical value is not changed when it is rounded, only the display
of the value is affected. If rounding is turned off again, the original
value will be displayed again. All math will come out correctly,
regardless of rounding, but results can look odd. For example, if you
enter 3/16, round to the nearest half, press Min, '+' and MR, the
display will show ~0 + ~0. The
value 3/16 rounded to the nearest half is 0, which is shown twice in
the display. Now
pressing '=' will add 3/16 to 3/16 to give ~1/2. In
calculations, the last calculation shows ~0 + ~0 = ~1/2,
which is a
nice trick if you can work it financially. Any time you see the '~',
remember that the value is rounded.
Note that rounding does not force the value into the fraction chosen -
fractions are always reduced as far as possible. If 1/2 is rounded to
the nearest 1/64th, it will still show up as 1/2 (not
32/64, and no
'~' is shown because the value is exact). And if 123/127 is rounded to
the nearest 1/64th, it will show
v) The Memory buttons
Results can be saved to memory for
use later or added to memory to keep a running total. When a value is
saved in the memory, an 'M' will show up in the calculator display
(above the memory buttons in the All-In-One page, or in the upper left
corner below the result display in the Large-Button page). A value in
memory can be recalled by pressing MR, and used in any part of a
If a calculation is not yet complete, pressing Min or M+ will
it and save/add the result to memory. For example, pressing 2 + 3 Min
will show 5 in the calculator display and store 5 in memory. The
rounding and units of the calculator value will be saved in the memory
value. Again, the accuracy of the value is not affected, only how it is
The memory keeps track of units just as the calculator does. If you use
M+ to add 5" to a value of 3 (no units) already in memory, the memory
result becomes 8". Any math operation that won't work in the calculator
will also fail for M+: trying to add a length to a volume will beep and
M+ adds the
calculator result to the value in memory
Min copies the
calculator result into memory, losing any old value
MR recalls the
memory value into the calculator
MC clears the
value in memory
If the calculator beeps when M+ is
pressed, the operation is illegal and nothing was done. This is
probably because the values are a mix of length, volume or area. Adding
an area to a volume or length does not make sense. M+ with different
units (mm/cm/m/in/ft) will always work as long as both values are
length, both are area or both are volume. A value with no units can be
added to anything. It will be given the units of the other value.
vi) The List Add button
When this button is pressed, the text
showing in the calculator display is copied into the User's Saved List.
No calculation is done, and the calculator itself is not affected. An
'L' is drawn on the screen along with the count of lines in the User's
Saved List. For the All-In-One page, the list count appears in the
lower left below the List Add button. In the Large-Button page, it is
drawn in the upper left corner, below the calculator result display and
the memory indicator.
Things to know.
i) Chain calculations
You can do a chain of operations
without pressing the '=' button. Each time a new operation is pressed,
the previous operation is calculated and the result is used as the
first number for the new operation. For example, if you press 1 + 2 x 3
=, the result is 9. 1 + 2 becomes 3 when the 'x' is pressed.
Then 3 x 3
ii) Board Feet and the NHLA method
BoardCalc figures board feet by
treating board feet as a volume: 144 cubic inches equals 1 board foot.
It does not make corrections for thickness less than an inch or round
thickness to the nearest 1/4. In fact, it does not do any rounding at
all in the calculations. The answer calculated is therefore not
necessarily what you would get using the NHLA method to calculate board
feet, especially for multiple boards where you tally a surface measure
first, rounding up one time and down the next. It was done this way so
that you can always see what you get, with no hidden rounding to
surprise you. If you need to use the NHLA method to calculate board
feet, it is up to you to do the rounding. There are many discussions
(and arguments) available about this topic on the web and elsewhere.
iii) Graffiti and Graffiti 2
Inputs from Graffiti can substitute
for most of the buttons and menu selections in the program:
- square (units)
feet (units) (not available in
y - yards (units)
" or i - inches (units)
millimeters (units) (not available in Graffiti2)
% - percent
<sp> - space
= or ret - equals, completes the
b - by
+ - add
x or * -
multiply ('*' in Windows only)
$ - add
select length field (Log Weight Calculator)
d or w - select diameter (Log
Palm OS version: Graffiti2 creates
some problems with
this list. A few crucial characters are entered by two strokes, the
first of which is also a legal letter. For example, to enter a double
quote for inches, you first enter a single quote, and then another
single quote. When the second quote is entered, the operating system
sends a backspace to eliminate the first single quote, and then sends a
double quote. This works for text, but if the calculator is showing a
result and you tried to change the units to inches, the calculator
would 'see' a single quote (converting the result to feet), a backspace
(clearing the result) and a double quote. There is now nothing to
convert to inches. For this reason, on any machine using Graffiti2, the
single quote and the lowercase L are ignored, so that most of the
Graffiti equivalents work.
iv) It BEEPS at me!
Sad to say, sometimes the machine is
smarter than we are. If BoardCalc beeps, it couldn't do what you asked
it to. This usually means that the dimension of the result is
impossible. Multiplying an area by an area, or adding a volume to a
length, for example, will get you a beep, because these don't make
If converting units for an area or volume, you don't need to press sq
or cu, and you will be beeped if you do. All that is required is
inches, feet, etc. BoardCalc already 'knows' that it is an area or
If numbers become too large
internally, they can cause an overflow, which means that BoardCalc
doens't have enough room in a single number to hold the value or
complete a calculation. If this happens, OVERFLOW is
displayed. Too see this, enter 8888888888 (ten '8's) and press
Internal to the calculator, all values are stored in inches. Because of
this, it is possible for a large value to be valid in inches, but too
large to convert to cm or mm. If this happens, the display will show
The value is still valid, but can't be shown in these
BoardCalc stores all values as
fractions. This means that values entered as a fraction will always be
exact, as opposed to most calculators that store values as decimal
mantissa with a power. 1/3 is really 1/3 in BoardCalc, rather than
.333333333.... with some vanishingly small error. In practical terms,
this just means that if rounding is not turned on, the fraction
displayed is the exact value and not an approximation.
Decimal values and math are accurate to about 8 significant digits.
This is much less than most scientific calculators, and was done to
avoid having to load a math library along with BoardCalc. This level of
accuracy would not be adequate if calculating orbital parameters for a
satellite shot to Jupiter. But for an 8-foot board, an error of 1 in
the 8th significant digit amounts to .0244 microns. For comparison, a
bacterium is about 100 times larger (2 microns), and the thickness of a
sheet of paper is roughly 5000 times larger (100 microns). So .0244
microns should be accurate enough for most woodworking.
2) Log Weight
What is it?
The Log Weight Calculator gives an estimate of the weight and board
yield of a log, given the tree species, the length, and the diameter
(inside the bark, at
the small end). Estimates can be added into a memory to keep a running
does it work?
There are two fields where values are
entered - Length (L:) and Diameter (D:). Since logs seldom end up as
exactly round cylinders with perfectly square ends, you will usually
have to average the length and diameter values before you enter them.
Diameter is taken at the small end of the log, inside the bark. One of
the outputs on the screen is D2:, which is the diameter used for the
large end, calculated from the length of the log and a general estimate
of tree taper. This will probably not match the large diameter of your
particular log exactly. D2 is meant to give you a rough idea how close
the estimate will be. D2 is rounded to the nearest 1/8" (or 0 decimal
places, if decimal) before being displayed.
While new values are being entered,
the weight and board feet fields go blank. When your length or diameter
is entered, press '=' to calculate the new weight and board feet.
Selecting a new species from the list
will recalculate the weight for the new species. Selecting a different
log rule will recalculate the board feet yield of the log using the new
ii) How the weight is calculated
Weight is estimated by calculating
the volume of a tapered cylinder with the small diameter and length
given. The diameter of the large end is estimated by assuming that a
log tapers 15% of its diameter over eight feet. The volume is
multiplied by the average density of green (newly-cut) lumber of a
particular species. The result is rounded to a reasonable number of
significant digits. See the discussion of accuracy under "Things to
iii) How the Log Yield in board feet
The three most common log rules are
available in BoardCalc: Doyle, Scribner Decimal C, and International
1/4 inch. Log yield is calculated from small diameter and length using
the standard formula for each of these methods, and results are rounded
to the nearest five or ten board feet, as each method dictates.
There is also a flavor of the
Scribner log rule, based directly on the Scribner table. Scribner
created his log rule by drawing circles, plotting how many rectangles
(board-ends) could fit within each circle, and then creating a table of
these values. The values in the table are not linear, and can not ALL
be calculated correctly by any reasonable formula. On the other hand,
the table only gives values for lengths that are even multiples of feet
between 4' and 20', and diameters in whole inches between 3" and 40".
In most cases, the table value will match the formula value. Both are
provided, for completeness. If a length or diameter is outside the
table limits, the result will be 0 or blank board feet.
Log weight and board feet are both
stored in the memory for the Log Weight Calculator. They can be used to
keep a running total of log weight and yield - an 'M' just above the
memory buttons shows that there is something stored in memory, and the
count behind the 'M' shows how many values have been added in. If in
doubt, recent calculations shows additions to the memory. When memory
recall (MR) is pressed, the saved log weight and board feet yield are
shown in the display, and the length and diameter fields are blanked
out. This memory is completely separate from the memory in the general
calculator - they do not affect each other.
v) The List Add button
When this button is pressed, a line
of text is assembled and stored in the User's Saved List. The text line
shows the length, diameter, weight, yield and species currently
displayed. No matter what units are shown in the log calculator, the
values in the User List are in inches. This is done so that the lines
will always be the same when exported to a spreadsheet. An
'L' is drawn in the lower left below the List Add button, along with
the count of lines in the User's Saved List.
Things to know - Log Weight Calculator
The weight given by the log weight
calculator is a rough
estimate. The density of green wood can vary
wildly from one tree to the next within the same species, or even
within the same tree. The density values in the Master Species List are
average for North America. Rot, disease, growing conditions, bark
thickness, height of the wood above ground in the tree, time of year,
geography and a host of other factors all change the density of the
For this reason, the result is rounded to make it clear that this is
not an exact value:
- under 100 lbs: nearest 5 lbs
- under 500 lbs: nearest 10 lbs
- under 1000 lbs: nearest 25 lbs
- under 2000 lbs: nearest 50 lbs
- above 2000 lbs: nearest 100 lbs
This rounding will drive some people
crazy, so it is possible to turn log-weight rounding off in
preferences. But the non-rounded answer will not be more accurate or
better in any way, even though it feels as though it is.
The Custom Species List gives you a
place to keep values for your specific situation, which may be more
useful to you than the average values for all of North America. It can
also be used to avoid sorting through 300 species to find one or two
that are used often. Copy common species for your area into the Custom
List, and they all show up on one page for easy selection.
ii) Default input and units
It isn't necessary to tap the
Diameter field every time you want to enter a new value. Since you will
probably be working with a fairly standard length most of the time, the
calculator assumes that if you haven't selected a field, you want to
calculate for a new diameter. Units are not required either. A number
entered in the diameter field will be taken as inches if no units are
selected. A number in the length field will be taken as feet unless
units are selected.
The log weight calculator does not do
unit or fraction/decimal conversions. Inputs remain in the form
entered, outputs are always lbs and board feet.
iv) Input Range
The Log Weight calculator will reject a
diameter or length that is under 1" or over 100', which means it will
beep without doing anything and wait for you to correct what is
obviously a mistake.
3) Board Shrinkage Calculator
What is it?
Wood changes size significantly across
the tangential and radial faces as its moisture content changes and its
cells swell or shrink. The moisture content of the wood depends on the
relative humidity. The Board Shrinkage calculator is set up to show a
range of shrinkage or swelling based on a board's width at the current
How does it work?
below are going to sound very complicated. But the shrinkage calculator
isn't hard to use. The three dimensions show three different widths of
a board at three different relative humidities. If you change one of
the dimensions, then the other two also have to change (be
recalculated) so that all three are correct at each rh. The central rh
is the relative humidity right now.
If you change that, then the two dimensions at the other rh's will
change. And if you change the left or right rh, that doesn't change the
rh right now, or the width of the board right now, it only changes the
left or right dimension at the new rh.
There are three fields at the top of
the screen for dimensions. Below each dimension is a field for its
Any of these can be changed - tapping a field clears it to take a new
value. If no field is selected, button
presses go into the central dimension field.
ii) How the shrinkage is calculated
Shrinkage for a board is found by
calculating the board's Equilibrium Moisture Content from the Relative
Humidity, finding the change in EMC by subtracting the EMC of the
original dimension/rh pair, taking the change in EMC divided by the
Fiber Saturation Point and multiplying it by the total change in board
size from saturation down to bone dry, and then multiplying this
percent change by the original dimension of the board.
If a dimension is changed, that
dimension/rh pair is used as the reference, and the other two
dimensions are recalculated according to what their size would be if
the reference board reached EMC at the other two relative humidities.
For example, if the relative humidities are 10, 50 and 90, and you
change the central dimension to 12, the reference size is 12" at 50%
relative humidity. The board's EMC is calculated for 50%RH.
Then the left dimension is recalculated: the EMC for 10%RH is found,
this is multiplied by the total tangential or radial shrinkage for the
species, then multiplied by the central dimension to find the change in
width. Likewise, the right dimension is recalculated for an EMC at
If the central RH is changed, the
central dimension/rh pair is used as the reference size, and the left
and right dimensions are recalculated.
If the left or right RH is changed,
the central dimension/rh is used as a reference to recalulate the left
or right dimension at the new RH.
Things to know.
i) Fiber Saturation Point
The Fiber Saturation Point is the
point at which water starts to leave cells in the wood, and it begins
to shrink. Moisture change above this level does not change the size of
the wood. The FSP is slightly different for different species - an
average value of 28% is used for all calculations here.
ii) Output resolution
The dimensions shown in the Shrinkage
Calculator are rounded to the nearest 32nd of an inch, just to keep the
display to a reasonable size. If higher accuracy is desired, use
decimal input (which will show the number of decimal points chosen in
preferences or on the calculator page). Be aware that shrinkage values
vary within a species and that an FSP of 28% is used for all species,
and boards are never exactly
radial or tangential, so beyond a certain point, more digits in the
answer don't mean anything. The nearest 32nd of an inch should be
The shrinkage calculator will change
units on the dimensions to any of inches, feet, mm, cm or meters.
Display can be flipped between decimal and fractional display by
pressing the fraction button or the same units button again. (For
example, if the display is in decimal inches, pressing the 'in' button
again will switch to fractional inches).
4) Species Lists
The Master Species List
This list holds data for domestic
hardwoods, domestic softwoods, and imported woods (softwoods and
hardwoods lumped together). All the species have shrinkage data, but
green density is more limited. This list can not be edited - it serves
as a reference that you can always go back to. Any item in the master
list can be copied to the custom list with the Add> button.
The Custom Species List
This list starts out empty. Items can
be copied to it from the master list or added from scratch. Any item in
the list can be edited. The Custom Species List serves three purposes -
first, a place to put a shorter list of the woods you most often use,
so you don't have to wade through 200 species on a small display to
find one that you use almost every day. The second purpose of the
is to provide a place to add new species. And finally, the custom list
entries can be edited with values more accurate for the specific
materials you use. If the White Oak that you cut on your woodlot
averages 62 lbs / cu ft instead of the Master List's 65, you can put an
entry in the custom List that says so.
The lists will always appear in
alphabetical order when BoardCalc is restarted, with all types
(hardwoods, softwoods and imports) visible. The order of items in the
database never changes, only the order in which they are displayed.
When sorted, the lists show the value
that was used to sort. As an example, if the Tangential Shrinkage was
used to sort the list, the percentage for tangential shrinkage will be
displayed on the end of the line for each species. If sorting
alphabetically and the list was called up from the Log Weight
Calculator, the density of each species will be shown, and only species
that have a density value will be visible.
Checkboxes on the sort page can remove
hardwoods, softwoods and/or imports from view when the list is sorted.
This can speed up a sort and shorten the displayed list considerably,
especially when sorting on the
Tan/Rad shrinkage ratio (stability).
Entering a letter using Graffiti or
the keyboard will
skip within the list to show the next species that starts with that
letter. An 'o' will skip to the next Oak species, for
Any line in the Custom list can be
edited, or new entries created. How this is done differs between the
Palm and Windows versions of BoardCalc:
Palm version: Tap on a species in the Custom list to highlight it, and
then press the Edit button. A new entry in the custom list can be
created by pressing the Edit button when no species is selected. The
edit form will come up with default values which can be changed.
Density is optional - a species with no density will not be visible
when the list is called up from the Log Weight Calculator. Note - if
you select a species and then wish to create a new entry in the custom
list, there is no way to unselect the species. Press cancel, and then
enter the list again.
Windows version: any time a species in the Master or Custom list is
selected, its data also goes into the Edit page. (This is one way to
see all the data for a species.) In the Edit page, data can be
changed and then saved or added to the Custom list. A new entry can be
created by pressing the New button, which will clear out all fields.
The Green Density field is optional, all others are required.
5) Recent Calculations
Every time the general-purpose
calculator completes a
calculation, it stores a line of text to the Recent Calculations List.
The text contains the parts of the calculation and the result, as they
in the calculator display. The entire calculation appears in the same
line, as in:
11" by 11" by 11" =
1331 cu in
2 + 3 = 5
A line is also saved to the list every
time a new weight/yield is calculated in the Log Weight calculator.
Each line gives the length (inches), diameter (inches), and resulting
96 by 15 = 525 lbs 61
BdFt Alder, Red
The list is saved when BoardCalc is
exited (which did not happen in BoardCalc 1.0). The list length is
fixed at 13 lines(Palm) or 15 lines(Windows), which is one page. The
most recent calculation is added
below the other lines in the list. If the list is full, all the other
lines are bumped up one line and the top line is thrown off. Any line
in the list can be copied to the User's Saved List by selecting
and pressing the "->L" button.
After a few sessions, the recent
calculations list will fill up and stay full, putting new calculations
at the bottom. If you would like to see only what you have done lately,
the entire list can be deleted. Press the "Delete All" button and press
OK when the alert pops up to ask you if you want to delete the entire
(In the Palm version, Recent Calculations can only be reached
the options menu. )
6) The User's Saved List
This list holds lines added using a
"list add" button (->L) from the Recent Calculations page or one of
the calculator pages. In the user's list, these lines are just text,
and are editable. They will be saved until explicitly deleted. The list
will hold up to 99 lines.
Any single line can be deleted by
selecting it (tapping on it) and pressing the delete key. The single
line will be deleted immediately (no alert to ask Are-You-Sure) and
lines below it
will be moved up to fill the empty space.
The PC version allows selection of multiple lines, using the mouse. No
matter where the cursor is at the beginning or end of the selection
block, when the mouse button is released the selection will switch to
whole lines. This makes it easier to copy lines to the clipboard to
export, but means that a nothing smaller than a whole line can be
selected. Once a block is selected (highlighted), it can be copied or
deleted with a button press.
The entire list can be deleted at
once, by pressing the "Delete All" button and pressing OK when the
alert pops up to ask you if you really want to delete the entire list.
Anywhere the list count is shown
(L:nn) the User's Saved List can be reached by tapping on the count.
The list count is shown in a button that has no border.
fetch: the Windows version has an extra button on the User's
List screen, labeled "Fetch". Pressing this button will import the
entire User's List from a selected Palm OS database that has been
HotSync'ed to the PC, and append it to the current User's List. You
might use BoardCalc on a Palm device in the field, to estimate weights
and board yields of logs, put the estimates into the User's List, and
then fetch them into the PC version, where they could be copied to the
clipboard and pasted into another document. Keep in mind that you must
HotSync your handheld before pressing the Fetch button to get the
up-to-date User's List from the handheld.
BoardCalcWin has to 'know' where to find your Palm OS database. The
first time that the Fetch button is pressed, it will bring up a window
to find the database. (This can also be reached from Preferences.)
BoardCalcWin will list all the users that it can find in the left half
of the screen. If your HotSync name appears there, you can select it
and you are done. Otherwise, you will need to find your database file,
"BdCalcDB.PDB", using the browse button/ file finder. The database
probably is kept in the Program Files folder, under a manufacturer's
name. For example, a Sony CLIE keeps users under "C:\Program Files\Sony
Handheld\". Within each user folder is a file called "Backup" where
HotSync'ed databases are kept, and BdCalcDB.PDB will be in that folder.
My HotSync name is JoeD, so the path to my database on a Sony CLIE is
"C:\Program Files\Sony Handheld\JoeD\Backup\BdCalcDB.PDB".
Preferences can only be reached from
Applies only to the
feet/inches/fraction display of a length. Choices are: Always, 1 - 10,
or Never. The number chosen is a number of feet. A value at or above
this number of feet will show feet and inches, but a value below this
will show up as inches, even though greater than a foot. At the default
setting of 10, a value of 9' 11" will show as 119" after pressing '=',
but 10' will show as 10'. If Show Feet is reduced to 8, then entering
119" or 9' 11" will show up as 9' 11", because they are at or above 8'.
Applies only to the display of
fractions. The roundoff chosen in the preferences page is the initial
rounding used for all new fractions as they are entered in the
calculator. A value displayed in the calculator can still have its
rounding changed to any value including none. As an example, if you
find yourself converting from decimal values to fractions frequently,
you might find it useful to set the roundoff to 32nds in the
preferences so that .12" comes up as ~1/8" rather than 3/25" when it is
Applies only to the display of decimal
values. Choices: 0 - 4. This is the number of decimal places displayed
for any decimal value in any of the calculators. This has exactly the
same effect as the popup on the All-In-One calculator page.
Log Weights Rounded
Only affects the display of weights in
the Log Weight Calculator. If set (which is the default) then all
weights calculated in the Log Weight Calculator are rounded. This can
be cleared to see the exact result of the weight calculation, but be
aware that this is NOT more accurate than the rounded value. See the
discussion about Accuracy, at Things to know - Log Weight
metric to inches: fraction
Only affects the display of a length
that has been converted from a metric, decimal value to inches. When
doing this conversion, you might usually want the inches value to show
as a fraction. Setting this checkbox will force the inches value to be
displayed as a fraction.
Log line columns fixed
This affects text put into the Recent
Calcs and User's List from the Log Weight/Yield Calculator. It is
provided to make import into some spreadsheets easier on the PC.
Setting this checkbox tells the Log Weight/Yield Calculator to add
spaces to any line that goes into the Recent or User's List, so that
the numbers always start in the same columns. If unchecked, a single
space is inserted between each word or value in the line.
8) Trial period
You can try this software out for 30
days. During the trial, all BoardCalc screens will be visible and fully
functional except that selection of a species in the Master or Custom
Species Lists will not be carried back into the Log Weight Calculator
or the Shrinkage Calculator.
If the software is not yet activated,
the time remaining in the trial period is shown in the upper right
corner of the About page. If the trial period expires and the
activation key has not been entered, BoardCalc will only show the About
You can enter the activation key at
any time, in the field at the bottom of the About page. Once the
software is activated, the activation key field will disappear, and
full use of the wood species databases will be allowed.
9) System Requirements for
- Palm OS 3.0 or above
- ~135K Bytes for the application BoardCalc.prc
- ~7K Bytes for the database bcalc_db.prc (required)
- Windows 98 or above
- ~3.8M Bytes of hard drive space
- 640 x 400 or larger display