Calculated Industries Construction Master III User manual
Calculated Industries
®
Construction
MasterIII ®
User’s Guide
TABLE OF CONTENTS
Introduction...................................................... 3
Key Definitions.................................................. 4
Entering Dimensions........................................13
Entering Square and Cubic Dimensions........... 14
Linear Conversions.......................................... 14
Square and Cubic Conversions........................ 15
Mathematical Operations................................16
Adding Dimensions.......................................... 16
Subtracting Dimensions................................... 17
Multiplying Dimensions...................................17
Dividing Dimensions........................................17
Percentage Calculations...................................18
Memory Functions........................................... 19
Fraction Setting............................................... 20
Linear Dimension Calculations........................ 21
Area Calculations.............................................23
Volume Calculations........................................ 27
Board Feet/Lumber Calculations......................32
Right-Angle Solutions...................................... 34
Hip/Valley Rafters............................................42
Hip/Valley Rafters (Irregular)..........................43
Jack Rafters...................................................... 44
Stair Problems..................................................46
Overflow Indication.........................................49
Accuracy........................................................... 49
Battery and Auto-Shut-Off.............................. 50
Full Reset, All-Clear.........................................50
Appendix A (Area Formulas)............................ 51
Appendix B (Area & Volume Formulas)............ 52
Limited Warranty............................................. 53
INTRODUCING:
The Construction Master III ®
Designed for today’s construction professional,
the all-new Construction Master III adds even
more power and ease of use to the already
powerful Construction Masterline-up. As with
earlier models, the format of this calculator is so
simple, even the novice user will find it easy to
solve hundreds of dimension-related problems
right in feet, inches and fractions!
■Add Strings of Dimensions
■Do Instant Dimensional Conversions
■Calculate Square & Rectangular Areas
■Determine Cubic Volumes
■Complete Metric Conversions
■Find Circumference and Area of Circles
■Solve Right-Triangles
■Find Regular & Irregular Hip/Valley Rafters
■Solve Jack Rafters Automatically
■Calculate Stair Risers and Treads
■Estimate Board Feet & Other Materials
■And much, much more!
It also works as a standard math calculator
with Memory, Percent, and battery-saving Auto
Shut-Off.
Calculated Industries, Inc.
4840 Hytech Drive • Carson City, NV 89706
1-800-854-8075 • 775-885-4900 • Fax: 775-885-4949
User’s Guide — 3
KEY DEFINITIONS
[+] [–] [x]
[÷] [=] Arithmetic operation keys.
[%] Four-function percent key.
0 – 9 Digits used for keying-in numbers.
[ . ] Decimal point.
[Off] Turns all power off. Clears the
display and all values previously
stored in Memory.
[On/C] Turns on power. Pressing once
clears the last entry and the display.
Pressing twice in succession clears
all non-permanent registers.
[M+] Stores any displayed number
(dimensioned or non-dimensioned)
in semi-permanent Memory. Also,
adds any displayed number to any
previously-stored number. Redis-
plays stored total in format of first-
entered dimension. For example,
you can add feet to yards to inches,
and when you press the [Rcl] [M+]
keys, the answer will be displayed
as total feet.
[Rcl] Recalls and displays the contents of
the semi-permanent Memory or
registers. Pressing [Rcl] twice in a
row displays and clears the Memory.
4— Construction Master III ®
[√] This key is used to find the square
root of a number. You must be
careful when entering dimensioned
values because by definition the
square root of a linear dimension
does not exist; therefore the calcu-
lator will correctly give you an er-
ror if you try to do this.
[Conv] This key, used in conjunction with a
dimension key, converts one dimen-
sioned number to another dimen-
sioned number. The one logistical
limitation is that you must maintain
convention. You cannot convert
from a linear dimension like feet,
for example, to a square or cubic di-
mension. This violates convention.
Additional [Conv] Key Functions:
When used in conjunction with the following
keys, the [Conv] keygives access to these
additional functions.
[Conv] [√] Finds the square (X2 or X-
Squared) of a number or
dimension. Again, you must
be careful when working with
dimensions because, for ex-
ample, if you try to square an
already square dimension,
you would bring it to the
fourth power, which does not
work on this calculator.
[Conv] [ ÷ ] Reciprocal, or 1/x function.
User’s Guide — 5
[Conv] [ x ] All-Clear, full-reset function
clears Memory and resets all
registers (Jack, Stair, & Frac-
tions) to their default values.
[Conv] [ + ] Pi (π) constant = 3.141593.
[Conv] [ – ] Change sign. Can also be
used to subtract a number
from the semi-permanent
Memory (replaces M-).
[Conv] [ M+ ] Replaces the value stored in
Memory with the value on
the display.
[Conv] [ * ] Fraction Set — This key is
used to semi-permanently set
up the default fractional for-
mat of all your answers.**
This preference setting is
cleared by (1) Performing an
All-Clear [Conv][x], or (2)
Replacing it with another
preferred fractional setting,
or (3) By entering a fraction
with a smaller denominator
than your preferred setting.***
*
Pressing [Conv], followed by any of the numbers 2, 4, 8, 1,
3, 6 will set the fraction. Entries other than these will not
change the fraction display.
** This will be the smallest denominator displayed. If,
however, the lowest common denominator is larger than
your preferred setting, the calculator will display this
instead.
*** Upon turning the unit "On," the "fs" symbol will appear
once to indicate a setting other than 1/64ths. If you are
unsure what base was last used, do an All-Clear.
6— Construction Master III ®
[Conv] [ 2 ] Fraction set to 1/2’s.
[Conv] [ 4 ] Fraction set to 1/4’s.
[Conv] [ 8 ] Fraction set to 1/8’s.
[Conv] [ 1 ] Fraction set to 1/16’s.
[Conv] [ 3 ] Fraction set to 1/32’s.
[Conv] [ 6 ] Fraction set to 1/64’s.
[Feet] This is an entry and conversion
key. The entry can be in whole or
decimal numbers. This key can also
be used in conjunction with the
[Inch] and [/] keys. Example: To
enter 6 feet 9-1/2 inches, the key se-
quence is: 6 [Feet] 9 [Inch] 1 [/] 2
This key can also be used with the
[Conv] key to convert any displayed
dimension to feet.*
[Inch] This key is an entry and conversion
key that works the same way as the
[Feet] key described above.** This
key can also be used with the [Conv]
key to convert any dimension value
to inches.
[Yds] Yards — This key is an entry and
conversion key. The entry can be a
whole number or a decimal number.
It will also convert any other dis-
playeddimensionednumber to yards
when used with the [Conv] key.
* Successive presses of the Feet key toggles the display
between feet-inch-fraction (if any) and decimal feet
(10ths, 100ths) formats.
** Successive presses of the Inch key toggles the display
between inch-fraction and decimal (10ths, 100ths) inch
formats.
User’s Guide — 7
[M] Meters — This is an entry and
conversion key that works in the
same way as the [Yds]key described
above.
[CM] Centimeters — This is an entry
and conversion key used to enter
decimal centimeters or to convert
decimal centimeters from some
other dimensional format when
used in conjunction with the [Conv]
key.
[MM] Millimeters — This is an entry
and conversion key that works in
the same way as the [CM] key de-
scribed above.
[Cu] Cubic— This definition key is used
in conjunction with a dimension key
(feet, yards, meters, etc.) to enter a
volume measurement. Example: 5
[Cu] [Yds]. Three linear dimensions
multiplied together also equal a
cubic dimension.
[Sq] Square — Similar to the [Cu] key,
this definition key is used in con-
junction with a dimension key (feet,
inches, yards, meters, etc.) to enter
an area measurement. Example: 10
[Sq] [Feet]. Also, two linear dimen-
sions multiplied together equal a
square dimension.
8— Construction Master III ®
[/] Fraction Bar— This definition key is
used to define and enter fractions.
Fractions can be both proper (1 or less
— 1/2, 1/8, 1/16) or improper (greater
than 1 — 3/2, 65/64). You enter a
fraction by first entering the
numerator (the part of the fraction
that is above the line) then the [/]
and the denominator (the part below
the line).
For example: To enter 1/2, the key se-
quence would be 1 [/] 2.
[Bd Ft] Board Feet— This key is an entry
and conversion key for board feet
units of measure. A board foot is a
cubic measurement equal to 144
cubic inches. The entry can be a
whole number or a decimal number.
It will also convert any other dis-
played cubic dimensioned number
to board feet when used in conjunc-
tion with the [Conv] key.*
[Per] Per-Unit — This key is used to
enter the per-unit dollar cost of a
dimensioned value. For example, if
you calculated 35 cubic yards of
concrete, and each yard cost $47,
you would use this key with the
times [x] key as follows:
35 [Cu] [Yds] [x] 47 [Per] [=] $1645
* In order to get a proper conversion, you must convert
from a cubic dimension.
User’s Guide — 9
One exception to this key is when
working with board feet: If your
dimension is board feet, the unit
price is entered in the standard
Mbm. (per thousand board foot
measure) format.
[Stair] Using the values entered into Rise
and Run, and the dimension entry
for “Desired Riser Height” (auto-
matically assumed in inches and
permanently stored in Memory),
calculates the following:
1st Press [Stair]: Number of Risers
2nd Press [Stair]: Actual Riser Height
3rd Press [Stair]: Riser Overage/Underage
4th Press [Stair]: Number of Treads
5th Press [Stair]: Actual Tread Width
6th Press [Stair]: Tread Overage/Underage
NOTE: After an All-Clear [Conv][x], the calcu-
lator will default to a “Desired Riser Height” of
7-1/2 Inches. Youmay enter any “Desired Riser
Height” over this default. For example, enter 8
[Stair] and the calculator will assume an 8 inch
“Desired Riser Height.” Youmay also recall
what is stored at any time by pressing [Rcl][Stair]
[Circ] Circle — After the entry of the
diameter of a circle (in either
dimensional or non-dimensional
format) pressing [Circ], solves for
the circumference(1st press) and
circle area(2nd press) of a circle.
10 — Construction Master III ®
Table of contents
Other Calculated Industries Calculator manuals
Calculated Industries
Calculated Industries 3420 User manual
Calculated Industries
Calculated Industries ProjectCalc Plus MX 8528 User manual
Calculated Industries
Calculated Industries 3265 User manual
Calculated Industries
Calculated Industries Mortgage PaymentCalc 3401 User manual
Calculated Industries
Calculated Industries 6260 User manual
Calculated Industries
Calculated Industries 4088 User manual
Calculated Industries
Calculated Industries ElectriCalc Pro User manual
Calculated Industries
Calculated Industries Measure Master 4018 User manual
Calculated Industries
Calculated Industries Home ProjectCalc User manual
Calculated Industries
Calculated Industries 4020 User manual
Calculated Industries
Calculated Industries 5060 User manual
Calculated Industries
Calculated Industries KitchenCalc 8300 User manual
Calculated Industries
Calculated Industries Real Estate Master IIx User manual
Calculated Industries
Calculated Industries Measure Master 4018 User manual
Calculated Industries
Calculated Industries 8509 User manual
Calculated Industries
Calculated Industries 8515 User manual
Calculated Industries
Calculated Industries 3423 User manual
Calculated Industries
Calculated Industries 3415 User manual
Calculated Industries
Calculated Industries Time Master II User manual
Calculated Industries
Calculated Industries Pocker Real Estate Master 3400 User manual
