Calculated Industries 44060 User Manual
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ONSTRUCTION
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44060 C
44065 C
4075 C
ONSTRUCTION MASTER
ONSTRUCTION MASTER
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4060 C
ONSTRUCTION MASTER
ONSTRUCTION MASTER
ONSTRUCTION MASTER
®
USER’S
GUIDE
®
FOR MODELS:
®
P
®
P
®
P
RO
DT P
P
RO TRIG PLUS
P
®
P
RO
RO
LT
RO
DT
RINTER
III
RO
™
Construction Master Pro DT
Printer
(Desktop model)
Model 44065
Construction Master Pro
Model 4060
CONSTRUCTION MASTER® PRO
USER’S GUIDE
This User’s Guide helps you solve common construction math and material estimation problems using the latest Construction Master® Pro
calculators—five of the most powerful feet-inch-fraction calculators to
date:
The Construction Master Pro Series —
1. LT (#4030)
2. Handheld (#4060)
3. Trig Plus III (#4075)
4. Desktop (#44060)
5. New! Desktop with Printer (#44065)*
*CI now offers a Printing Model—the Construction Master Pro DT
Printer! It has all the features of the Construction Master Pro Desktop,
plus a built-in printer (see Appendix C).
IMPORTANT: The Construction Master Pro calculators share many
keys and functions. However, some keys and functions differ. Please
refer to the grid on page 8 to see what features are applicable to your
model, so that you can follow the corresponding examples in this
User’s Guide. Note: the Desktop with Printer (#44065) operates almost
identically to the Desktop (#44060).
User's Guide — 1
TABLE OF CONTENTS
CONSTRUCTION MASTER® PRO USER’S GUIDE......1
INTRODUCTION .....................................................................7
CONSTRUCTION MASTER® PRO — KEY/FUNCTION
COMPARISON.........................................................................8
KEY DEFINITIONS..................................................................9
Basic Operation Keys.................................................................. 9
Convert [Conv] Key —Unit Conversions and Second Functions.....10
Memory and Storage Functions................................................11
Recall [Rcl] Key......................................................................12
Dimensional Measurement Unit Keys...........................................13
Weight Keys..............................................................................14
Construction Project Keys ..........................................................15
Block/Brick Key......................................................................15
Circular Function Keys ............................................................16
Column/Cone Key ...................................................................17
Footing Key............................................................................17
Right Triangle/Roof Framing Keys .............................................18
Hip/Valley and Jack Rafter Keys............................................20
Rake Wall Function ..............................................................22
Roof Key ................................................................................23
Stair Key................................................................................24
Trigonometry Function Keys........................................................25
GETTING STARTED ............................................................27
ENTERING DIMENSIONS...................................................27
Entering Linear Dimensions ......................................................27
Entering Square/Cubic Dimensions...........................................27
CONVERSIONS (LINEAR, AREA, VOLUME).................29
Linear Conversions ..................................................................29
Converting Feet -Inch-Fractions to Decimal Feet .........................29
Converting Decimal Feet to Feet -Inch-Fractions .........................30
Converting Fractional Inches to Decimal Inches ..........................30
Converting Decimal Inches to Fractional Inches ..........................30
Square Conversions .................................................................31
2 — CONSTRUCTION MASTER PRO
Cubic Conversions .................................................................. 31
PERFORMING BASIC MATH WITH DIMENSIONS......32
Adding Dimensions ................................................................. 32
Subtracting Dimensions ...........................................................32
Multiplying Dimensions ............................................................32
Dividing Dimensions ................................................................ 33
Percentage Calculations.......................................................... 33
MEMORY OPERATION........................................................34
PAPERLESS TAPE OPERATION.....................................36
EXAMPLES — USING THE CONSTRUCTION
MASTER PRO.......................................................................38
LINEAR MEASUREMENT EXAMPLES...........................39
Adding Linear Measurements ...................................................39
Cutting Boards ........................................................................39
Window Measurement............................................................. 40
Calculating the Center Point .....................................................40
AREA CALCULATIONS......................................................41
Square Area (x2)..................................................................... 41
Area of a Rectangular Room (LxW)...........................................41
VOLUME CALCULATIONS................................................42
Rectangular Containers (LxWxH).............................................. 42
Volume of a Cylinder............................................................... 43
Volume of a Cone ................................................................... 43
WEIGHT/VOLUME CONVERSIONS.................................44
Weight Convers ions ................................................................44
Weight per Volume/Volume Conversions................................... 45
BLOCKS/BRICKS................................................................46
Number of Blocks (not available on LT and Trig Plus III)............46
Number of “Face” Bricks (not available on LT and Trig Plus III)... 47
Number of “Paver” Bricks (not available on LT and Trig Plus III).. 47
BOARD FEET — LUMBER ESTIMATION.......................48
Total Board Feet — With Dollar Cost........................................ 48
User's Guide — 3
CIRCLE CALCULATIONS ..................................................49
Circumference and Area of a Circle...........................................49
Circle Properties — Arc Length and Diameter Known..................49
Arched Windows.....................................................................51
Arc Length — Degree and Diameter Known ...............................52
Arc Length — Degree and Radius Known ..................................52
CONCRETE/PAVING...........................................................53
Volume of Concrete for a Driveway............................................53
Concrete Columns ...................................................................54
Complex Concrete Volume.......................................................56
Concrete Footings (not available on Trig Plus III).......................58
Multiple Concrete Footings (not available on Trig Plus III)...........58
Squaring Up a Foundation ........................................................59
FLOOR COVERING AREA CALCULATIONS.................60
Carpeting................................................................................60
GRADE/SLOPE.....................................................................61
Back-Fill on a Slope — Percent of Grade Known........................61
RIGHT TRIANGLE AND ROOF FRAMING EXAMPLES63
Roof Framing Definitions .............................................................63
Common Rafter Length ............................................................66
Common Rafter Length — Pitch Unknown .................................67
Angle and Diagonal (Hypotenuse).............................................67
Rise.......................................................................................68
Rise and Diagonal...................................................................68
Finding Sheathing Cut .............................................................69
Regular (45°) Hip/Valley and Jack Rafters (not available on LT)...70
Jack Rafters — Using Other Than 16 Inch On-Center Spacing (not
available on LT) ......................................................................72
Irregular (non-45°) Hip/Valley and Jack Rafters — Descending,
with On-Center Spacing Maintained (not available on LT) ..........73
Irregular (non-45°) Hip/Valley and Jack Rafters — Ascending, with
Jacks Mating at Hip/Valley (not available on LT).............75
Rake Wall – No Base..............................................................77
Rake Wall – With Base...........................................................79
ROOFING MATERIALS........................................................80
Roof Covering — Bundles of Roof Shingles (not available
on LT and Trig Plus III)............................................................80
4 — CONSTRUCTION MASTER PRO
Roof Covering — Number of Shingles ....................................... 81
Area for Roofing Materials........................................................82
STAIR LAYOUT EXAMPLES..............................................83
Stair Layout Definitions ...............................................................83
Stairs — Given Floor-to-Floor Rise ...........................................85
Stairs — Given Rise and Run................................................... 86
Stair Risers Only — Custom Height.......................................... 87
Baluster Spacing .................................................................... 88
NUMBER OF STUDS...........................................................89
TRIGONOMETRY AND D:M:S EXAMPLES....................90
Practical Trigonometric Formulas ................................................ 90
Converting Degrees:Minutes:Seconds....................................... 91
Time Calculations Using D:M:S ................................................92
Percent Grade/Slope ...............................................................92
Converting Tangent/Pitch to Angle............................................ 93
Converting Roof Angle to Pitch .................................................93
Angle — Rise and Hypotenuse Known (Trig Plus III and Desktop
Only)...................................................................................... 94
APPENDIX A — DEFAULT SETTINGS ...........................95
Metric Mode........................................................................... 95
APPENDIX B — PREFERENCE SETTINGS..................96
How to Set Preferences........................................................... 99
LT (#4030) .........................................................................100
Handheld (#4060) and Desktop (#44060)..............................101
Trig Plus III (#4075) ............................................................103
APPENDIX C — USING THE DESKTOP PRINTING
MODEL (DT PRINTER: #44065)......................................105
Printer Keys............................................................................105
Connecting the AC Adapter.......................................................108
Using Battery Power ................................................................109
Replacing the Paper Roll ..........................................................110
Replacing the Ink Roller ............................................................112
Notes on Using the Printer ........................................................114
APPENDIX D — IMPORTANT NOTES FOR OWNERS
OF PREVIOUS CONSTRUCTION MASTERS®...........117
User's Guide — 5
APPENDIX E — ACCURACY, AUTO SHUT- OFF,
BATTERIES, ERRORS..................................................... 119
Accuracy/Errors.................................................................... 119
Auto Shut -Off........................................................................120
Battery(ies)...........................................................................120
Replacing the Battery(ies)...................................................... 120
Battery Replacement Instructions ........................................... 120
Reset Key ............................................................................ 121
APPENDIX F — AREA/VOLUME FORMULAS............ 122
REPAIR AND RETURN.................................................... 124
WARRANTY........................................................................ 125
INDEX................................................................................... 128
6 — CONSTRUCTION MASTER PRO
INTRODUCTION
The Construction Master Pro line includes the most advanced feetinch-fraction calculators designed specifically for building pro’s!
The Pro calculators handle practically any problem involving measurements and can be used to save time, prevent errors, and accurately
perform common building projects such as: estimating concrete vo lume, squaring up foundations, framing roofs, ordering lumber, building
stairs, walls, laying driveways, carpet or floor covering, figuring precise
angle calculations, or simply working in feet-inch-fractions or decimal
feet!
Your Calculator Helps You Solve:
• Dimensional Math Problems
• Conversions Between Feet -Inch-Fractions, Decimal Feet, Deci-
mal Inch and Yards
• English/Metric Conversions
• Problems Involving All Common Fractions – 1/2" to 1/64"!
• Area/Volume Calculations
• Board Feet/Lumber Calculations
• Circle Calculations
• Material Estimations and Costs
• Rake Walls
• Right Angle/Triangle Solutions
• Stair Layout (Risers/Treads)
• Weight/Volume Conversions
Selected Models Also Solve:
• Block/Brick, Concrete Footing, Column and Roof Bundle
Material Estimation
• Complete Rafter Solutions (Regular and Irregular Hip/Valley Rafters, Jack Rafters and Cut Angles)
• Trigonometry Calculations
User's Guide — 7
CONSTRUCTION MASTER® PRO —
KEY/FUNCTION COMPARISON
The Construction Master Pro calculators vary slightly in keys and functions, sharing basic measurement unit, right triangle and stair keys.
Some models additionally compute advanced roof framing problems,
project material estimations, or advanced Trigonometry applications.
Note: The DT (Desktop) with Printer (#44065) operates almost identically to the DT (#44060).
AVAILABLE KEYS
OR FUNCTIONS
Works in All Fractions
(1/2"-1/64")
Dimensional Unit Keys
and Conversions (Feet,
Inches, Fractions,
Yards, Metric, Acres)
Weight Keys and
Conversions (lbs, kg,
tons, Metric tons)
Block/Brick
Board Feet
Circle
Column
$Cost
D:M:S
Footing
Pitch, Rise, Run, Diag.
Rake Wall
Roof Framing Keys
(Reg. and Irreg. Hip/
Valley, Jacks, Cuts)
Roof Area and Bundles
Stair
Trigonometric Keys
Preference Settings
LT
(#4030)
Hand-
held
(#4060)
DT
(#44060
)
Trig
Plus III
(#4075)
• • • •
• • • •
• • • •
• •
• • • •
• • • •
• • •
• • • •
• • • •
• • •
• • • •
• • • •
• • •
• •
• • • •
• •
• • • •
8 — CONSTRUCTION MASTER PRO
KEY DEFINITIONS
BASIC OPERATION KEYS
[On/C] — On/Clear
Turns power on. Pressing once clears the display. Pressing twice
clears all temporary values.
[Off]
Turns all power off, clearing all non-permanent registers.
[+] [–] [x] [÷] [=]
Arithmetic operation keys.
[%]
Four-function percent key.
[0] – [9] and [ •• ]
Digits used for keying in numbers.
[00] (Desktop Only)
Enters “00” to save keystrok es (e.g., 1 [00] to enter 100).
[u] — Backspace Key
Used to delete entries one keystroke at a time (unlike the [On/C]
function, which deletes the entire entry).
User's Guide — 9
Convert [Conv] Key—Unit Conversions and Second
Functions
The [Conv] key is to convert between measurement units or to
access second functions, listed below:
[Conv] — Convert
Used with the measurement keys to convert between units or with
other keys to access special functions.
[Conv] [ x ] — All Clear
Clears all values, including Memory. Resets all permanent settings
to defaults.
þþ Note: Use only when necessary, as it deletes all stored values.
[Conv] [%] — x2
Squares the value in the display. For example, to square the value
10, enter 10 then [Conv] [%].
[Conv] [uu ] — Square Root Function (√ )
Used to find the square root of a non-dimensional or area value (e.g.,
100 [Conv] [uu ] = 10).
[Conv] [ / ] — x10x
Allows entry of an exponent. For example, 8 [Conv] [/] 14 is 8 times
10 to the 14th power.
[Conv] [ ÷ ] — 1/x
Finds the reciprocal of a number (e.g., 8 [Conv] [÷] = 0.125).
[Conv] [ – ] — Change (+ / –) Sign
Toggles the sign of the displayed value to plus or minus.
[Conv] [ + ] — Pi (ππ)
Constant = 3.141593
[Conv] [ •• ] — Degrees: Minutes: Seconds
Converts between D:M:S and decimal degree formats.
10 — CONSTRUCTION MASTER PRO
[Conv] [ 9 ] — Total Cost
Computes total material cost given a unit dimension and an entered
Per Unit Cost.
[Conv] [ Stor ] — Access Preference Settings
Used to access various customizable settings, such as dimensional
answer formats (see Preference Settings on page 96).
Memory and Storage Functions
Your calculator has two types of Memory:
1) basic memory or semi-permanent, cumulative [M+];
2) non-cumulative Storage Registers (M1) and (M2).
[M+] — Semi-Permanent Memory
Adds any displayed number, dimensioned or unitless, to the semipermanent, accumulating Memory. Values can be subtracted from
this Memory using [Conv] [M+]. [Rcl] [Rcl] will recall and clear the
Memory. [Conv] [Rcl] will clear the accumulating Memory without
disturbing the existing display.
[Stor] [1] — Storage Register (M1)
Stores the displayed value in non-cumulative, permanent Memory
(e.g., 10 [Stor] [1], [Rcl] [1] = 10). Good for storing a single value, for
future reference.
þþ Note: Non-cumulative means it only accepts one value (does not
add or subtract) and a second entered value will replace the first.
Permanent means the value is stored even after the calculator is
shut off. To delete a stored value, enter a new value or perform an All
Clear [Conv] [x].
[Stor] [2] — Storage Register (M2)
Same function as [Stor] [1]. See above.
User's Guide — 11
Recall [Rcl] Key
The [Rcl] key is used to recall or review stored values (e.g., [Rcl]
[Pitch] to recall a previously entered pitch value). It is also used in re-
viewing stored settings, or in Paperless Tape and Memory operation
(see below).
[Rcl] [ = ] — Paperless Tape
Accesses the paperless tape mode (see “Paperless Tape,” page
36), which keeps track of your past 20 entries. Useful for chec king
strings of numbers.
[Rcl] [Rcl] — Clear M+
Displays and clears M+.
[Rcl] [M+] — Recall M+
Displays value stored in M+.
[Rcl] [1] —Recall M1
Recalls the stored value in M1.
[Rcl] [2] —Recall M2
Recalls the stored value in M2.
12 — CONSTRUCTION MASTER PRO
DIMENSIONAL MEASUREMENT UNIT KEYS
The following keys are used for entering units of measure, with ease
and accuracy:
[Yds] — Yards
Enters or converts to yards.
[Feet]
Enters or converts to feet. Also used with the [Inch] and [/] keys for
entering feet -inch values (e.g., 6 [Feet] 9 [Inch] 1 [/] 2 ). Note: Repeated presses after [Conv] toggle between feet -inches and decimal
feet (e.g., 6 [Feet] 9 [Inch] 1 [/] 2 [Convert] [Feet] = 6.791667 feet;
press [Feet] again to return to feet -inch-fractions).
[Inch]
Enters or converts to inches. Also used with the [/] key for entering
fractional inch values (e.g., 9 [Inch] 1 [/] 2). Note: Repeated presses
after [Conv] toggle between fractional and decimal inches (e.g., 9
[Inch] 1 [/] 2 [Convert] [Inch] = 9.5 inch; press [Inch] again to return to inch-fractions).
[ / ] — Fraction Bar
Used to enter fractions. Fractions may be entered as proper (1/2,
1/8, 1/16) or improper (3/2, 9/8). If the denominator (bottom) is not
entered, the calculator's fractional resolution setting is automat ically
used (e.g., entering 15 [/] [=] or [+] will display 15/16, based on the
default fractional res olution setting of 16ths (default setting for Trig
Plus III is 64ths).
[m] — Meters
Enters or converts to meters.
[Conv] [5] — Centimeters
Enters or converts to centimeters.
[mm] — Millimeters
Enters or converts to millimeters.
User's Guide — 13
[Conv] [ 2 ] — Acres
Enters or converts (a square value) to acres.
[Conv] [ 0 ] — Board Feet
Enters or converts cubic values to board feet. One board foot is equal
to 144 cubic inches.
WEIGHT KEYS
[Conv] [ 1 ] — Kilograms
Enters or converts (a weight or volume value) to kilograms. A dimensioned volume will convert using the stored weight per volume value.
[Conv] [ 3 ] — Metric Tons
Enters or converts (a weight or volume value) to Metric tons. A dimensioned volume will convert using the stored weight per volume
value.
[Conv] [ 4 ] — Pounds (lbs)
Enters or converts (a weight or volume value) to pounds. A dimensioned volume will convert using the stored weight per volume value.
[Conv] [ 6 ] — Tons
Enters or converts (a weight or volume value) to tons. A dimensioned
volume will convert using the stored weight per volume value.
[Conv] [ 8 ] — Store Weight per Volume
Stores a new weight per volume value as tons per cubic yard (default
= 1.5 tons per cubic yard), or other format, as listed below:
þþ Note: After entering a value and pressing [Conv] [8], continue press-
ing the [8] digit key until you’ve reached the desired weight per volume format. To recall your setting, press [Rcl] [8].
• Ton Per CU YD
• LB Per CU YD
• LB Per CU FEET
• Ton Per CU M
• kG Per CU M
14 — CONSTRUCTION MASTER PRO
Construction Project Keys
The following Construction Project Keys help you instantly figure quantities and costs of materials, so you can build like a pro!
Block/Brick Key
The Block key helps you quickly estimate the quantity of blocks or
bricks required for building walls, walkways or other areas.
[Block] — Number of Blocks or Bricks
Calculates the total number of concrete blocks required to fill a given
area. Uses a standard block/mortar area of 128 square inches. This
key can also be used for calculating the number of “face” or “paver”
bricks by storing a brick size (see below).
[Stor] [Block] — Store Block or Brick Size
Used to store a size other than the default block size of 128 square
inches (e.g., 120 [Stor] [Block] stores a size of 120 square inches).
This value is permanently stored until you change it or perform an All
Clear. To recall the stored setting, press [Rcl] [Block].
þþ Note: For Brick Estimates—You may also enter a brick size using
[Stor] [Block]. For example, when building with standard “face”
bricks, enter a brick size of 21 square inches (21 [Stor] [Block]) or
store a “paver” brick size of 32 square inches (32 [Stor] [Block];
based on Modular U.S. brick size of 3-5/8 inches x 2-1/4 inches x
7-5/8 inches, including 3/8 inch mortar = 4 inches x 2-5/8 inches x 8
inches).
User's Guide — 15
Circular Function Keys
The circle key helps you quickly solve circular area, volume or arc
problems.
[Circ] — Circle
Displays and calculates the following values, given an entered circle
diameter* or radius:
• diameter
• circle area
• circumference
*To enter a diameter (e.g., 10 feet), press 10 [Feet] [Circ].
[Conv] [Diag] — Radius
Enters or calculates the circle radius (e.g., 5 [Feet] [Conv] [Diag]).
[Conv] [Circ] — Arc Length or Degree of Arc
Enters or calculates arc length or degree of arc, and further solves for
additional circular values, listed below.
If a circle diameter and arc degree (or arc length) are entered, further
presses of [Circ] will display and calculate the following:
• arc length or degree of arc
• chord length
• segment rise
• pie slice area
• segment area (between the chord and the arc)
[Run] — Run (Chord Length)
Used with [Rise] or [Conv] [Diag] to find the chord length or the ra-
dius of a circular segment. If the segment rise and radius have been
entered, this key will display the chord length of the circular segment.
16 — CONSTRUCTION MASTER PRO
[Rise] — Rise (Segment Rise)
Used with [Run] or [Conv] [Diag] to find the rise or the radius of a
circular segment. If the chord length and radius have been entered,
this key will display the segment rise of the circular segment.
Column/Cone Key
The Column and Cone functions help you quickly estimate volume and
surface area of columns or cones.
[Column]
Calculates the total volume and surface area of a column using the
values stored in [Circ] and [Rise].
[Conv] [Column] — Cone
Calculates the total volume and surface area of a cone using the va lues stored in [Circ] and [Rise].
Footing Key
The Footing key helps you quickly estimate the volume of concrete required for concrete footings.
[Ftg] — Footing
Calculates total quantity of concrete required based on a given wall
length and footing size. Size based on standard or default footing
size equal to 1.8 square feet or 259.2 square inches.
[Stor] [Ftg] — Store Footing Area
Used to store a value other than the default of 1.8 square foot
footing size (e.g., 128 [Stor] [Ftg] stores a footing size of 128
square inches). This value is permanently stored until you change it
or perform an All Clear. To recall the stored setting, press [Rcl]
[Ftg].
User's Guide — 17
Right Triangle/Roof Framing Keys
Right Triangle:
Pitch =
Rise
Run
Using the Pythagorean theorem, the top row of keys on your Construction Master Pro provide instant solutions in dimensional format to right
triangle problems (particularly, roof framing).
The Construction Master Pro’s keys are labeled in easy to remember
roofing terms. The right triangle is calculated simply by entering two of
four variables: 1) Rise, 2) Run, 3) Diagonal or 4) Pitch.
[Pitch]
Enters or calculates the pitch (slope) of a roof (or right triangle).
Pitch is the amount of "rise" over 12 inches (or 1 meter) of "run."
Pitch may be entered as:
• a dimension: 9 [Inch] [Pitch]
• an angle: 30 [Pitch]
• a ratio: 0.75 [Conv] [Pitch]
• a percentage: 75 [%] [Pitch]
Unit Run
Diagonal
Pitch °°
Unit Rise
18 — CONSTRUCTION MASTER PRO
þþ Note: An entered (vs. calculated) pitch is a permanent entry. This
means that it will remain stored even after you turn the calculator
off. To change the pitch, simply enter a new pitch value.
In contrast, a calculated pitch value is not permanently stored.
This means that the calculator will return to the pitch value you last
entered when you clear the calculator or press [On/C] twice.
[Rise]
Enters or calculates the rise or vertical leg (height) of a right triangle.
[Run]
Enters or calculates the run or horizontal leg (base) of a right
triangle.
[Diag] — Diagonal
Enters or calculates the diagonal leg (hypotenuse) of a right triangle.
Typical applications are “squaring up" slabs or finding Common rafter
lengths. Additional presses of the [Diag] key will also display Plumb
and Level cut angles in degrees.
þþ Note: The Common rafter calculation is the “point-to-point” length
and does not include the overhang or ridge adjustment.
User's Guide — 19
Hip/Valley and Jack Rafter Keys
Irregular
Side
[I/Jack]
Hip Rafter
Jack Rafters
Common
Side
[Jack]
16”
The Construction Master Pro uses the rise, run, diagonal, pitch and
o.c. spacing values to compute regular (45°) and irregular (non-45°)
Hip/Valley and Jack rafter lengths (excluding wood thickness, etc.).
When calculating regular and irregular Jack rafter lengths, you will see
the letters “JK” (Common pitch side) or “IJ” (irregular pitch side) and the
corresponding Jack number to the left of your calculator display. This
will help you keep track of the descending sizes and which side the
corresponding rafter is based on.
[Hip/V] — Hip/Valley Rafter
Finds the regular (45º) or irregular (non-45º) Hip/Valley rafter length.
• Regular Hip/Valley Length: After right triangle/rafter values
are entered or calculated (e.g., pitch, rise, run), pressing
[Hip/V] will calculate the length of the regular Hip/Valley
rafter.
• Irregular Hip/Valley Length: If an irregular pitch is entered via
[Conv] [Hip/V] (see next page), pressing [Hip/V] will calculate
the irregular Hip/Valley rafter length. (An irregular or “nonstandard” roof has two different pitches/slopes.)
20 — CONSTRUCTION MASTER PRO
• Subsequent presses of the [Hip/V] key will also display Plumb,
Level, and Cheek cut angle values in degrees.
[Conv] [Hip/V] — Irregular Pitch
Enters the irregular or secondary pitch value used to calculate
lengths of the irregular Hip/Valley and Jack rafters.
You may enter the irregular pitch as:
• a dimension: 9 [Inch] [Conv] [Hip/V]
• an angle: 30 [Conv] [Hip/V]
• a percentage: 75 [%] [Conv] [Hip/V]
þþ Note: An entered irregular pitch can be recalled by pressing [Rcl]
[Conv] [Hip/V].
[Jack] — Jack Rafters
Finds the descending Jack rafter sizes for regular pitched roofs,
based on the stored on-center spacing and previously entered or calculated right triangle/rafter values (e.g., pitch, rise, run).
• The default on-center spacing is 16 inches. A new on-center
spacing may be entered and permanently stored by pressing
an inch value and [Stor] [7] (e.g., 12 [Inch] [Stor] [7]). The current on-center spacing value can be viewed by pressing [Rcl]
[7].
• Repeated presses of the [Jack] key will display all the rafter
sizes (on the regular pitch side) as well as display the Plumb,
Level, and Cheek cut angle values. Additional presses will display the rafter sizes on the irregular pitch side (if an irregular
pitch was entered; see above), or repeat the previously displayed values.
þþ Note: You may set your calculator to display the Jack rafter lengths
in either ascending or descending order (see Preference Settings on
page 96).
þþ Note: You may program your calculator to “mate up” the Jack rafters,
rather than using the entered or default on center for both sides (see
Preference Settings on page 96).
User's Guide — 21
[Conv] [Jack] — Irregular Side Jacks
Operates same as [Jack], but displays the rafter values from the
irregular pitched side first.
Rake Wall Function
[Conv] [Rise] — Rake Wall
This function finds the stud sizes in a Rake Wall given computed or
entered values for pitch, rise and/or run. The various sizes will be
displayed via repeated presses of [Rise]. The sizes can be displayed
in either descending (from longest to shortest) or ascending (from
shortest to the longest) order, depending upon your preference setting (see Preference Settings on page 96). If a value is entered prior
to pressing [Conv] [Rise], this value will be taken as the Base size
and automatically added to the various rafter lengths.
[Stor] [7] — Store On-Center (o.c.) Spacing
Used to store a value other than the default of 16 inches on center
(e.g., 18 [Inch] [Stor] [7] stores an 18 inch on center) for Rake Wall
stud calculations. Press [Rcl] [7] to review the stored value.
22 — CONSTRUCTION MASTER PRO
Roof Key
The Construction Master Pro's Roof function provides a quick computation of roof area, given a floor area and a roof pitch. In addition, this
function also converts the calculated Roof Area into a quantity of (331/3 square feet) bundles of shingles.
[Roof]
Converts an entered floor area into a roof area. A second press will
display the quantity of (33-1/3 square feet) bundles of shingles required to cover the computed roof area.
[Conv] [00] — Roof (Desktop Only)
Same as above. A second press of [00] will display the quantity of
(33-1/3 square feet) bundles of shingles required to cover the computed roof area.
User's Guide — 23
Stair Key
The Construction Master Pro easily computes stair layout solutions.
Given values for rise and/or run, your calculator will compute riser,
tread, stringer and angle of incline values simply by pressing the
[Stair] key.
[Stair]
A multi-function key that uses a stored desired riser height, desired
tread width, and rise and run values to compute and display the following:
Press Result
1 Riser Size
2 Number of Risers
3 Riser Overage/Underage
4 Tread Width
5 Number of Treads
6 Tread Overage/Underage
7 Stringer Length
8 Angle of Incline
þþ Note: Default values are 7-1/2 inches for Desired Riser Height and
10 inches for Desired Tread Width.
þþ Note: It is not possible for the calculator to include the
nose/overhang measurement. Thus, you need to adjust for this
measurement per local codes.
[Stor] [Stair] — Store Desired Riser Height
Stores a value other than the default desired stair riser height of
7-1/2 inches (e.g., 8 [Inch] [Stor] [Stair] stores an 8-inch desired
stair riser height). To recall the stored setting, press [Rcl] [Stair].
[Stor] [m] — Store Desired Tread Width
Stores a value other than the default desired stair tread width of 10
inches (e.g., 12 [Inch] [Stor] [m] stores a 12-inch desired stair tread
width). This value is used when the run or the rise has not been en-
tered (used as the tread width when a run has not been entered and
with the run value to solve the stair parameters when a rise has not
been entered.) To recall the stored setting, press [Rcl] [m].
24 — CONSTRUCTION MASTER PRO
TRIGONOMETRY FUNCTION KEYS
Hypotenuse
Opposite Side
Ø
Adjacent Side
Tangent Ø =
Sine Ø =
Cosine Ø =
The Desktop and Trig Plus III calculators have standard trigonometric
keys, in addition to Right Triangle/Rafter keys (e.g., Rise, Run, Diagonal), for advanced right triangle mathematics.
The sine, cosine and tangent of an angle are defined in relation to the
sides of a right triangle.
Using the [Conv] key with the trigonometric function gives you the
arcsine, arccosine and arctangent – all of which are used to find the
angle for the sine, cosine, or tangent value entered.
Opposite
Adjacent
Opposite
Hypotenuse
Adjacent
Hypotenuse
User's Guide — 25
[Sine] — Sine Function
Computes the sine of a degree or undimensioned* value.
[Conv] [Sine] — Arcsine (sin-1)
Computes the angle for the entered or calculated sine value.
[Cos] — Cosine Function
Computes the cosine of a degree or undimensioned value.
[Conv] [Cos] — Arccosine (cos-1)
Computes the angle for the entered or calculated cosine value.
[Tan] — Tangent Function
Computes the tangent of a degree or undimensioned value.
[Conv] [Tan] — Arctangent (tan-1)
Computes the angle for the entered or calculated tangent value.
RR *Note: Cannot use on dimensioned values.
26 — CONSTRUCTION MASTER PRO
GETTING STARTED
ENTERING DIMENSIONS
Entering Linear Dimensions
When entering feet -inch-fraction values, enter dimensions from largest
to smallest — e.g., feet before inches, inches before fractions. Enter
fractions by entering the numerator (top), pressing [ / ] (fraction bar key)
and then the denominator (bottom).
þþ Note: If a denominator is not entered, the fractional setting value
is used.
Examples:
Dimension Keystrokes
5 Yards 5 [Yds]
5 Feet 1-1/2 Inch 5 [Feet] 1 [Inch] 1 [ / ] 2
17.5 Meters 17.5 [m]
Entering Square/Cubic Dimensions
The Construction Master Pro lets you easily enter square and cubic
values. Simply press a dimensional unit key two times to label a number as a square value, or three times to label a cubic value. (Note: If
you pass the desired dimensional format, keep on pressing the dimensional unit key until the desired result is displayed.) Enter square and
cubic dimensions in the following order:
(1) Enter numerical value (e.g., 100).
(2) Press desired unit key (e.g., [Feet]) to label value as
“linear.”
(3) Second press of unit key (e.g., [Feet]) labels value as
“square.”
(4) Third press of unit key labels value as “cubic.”
þþ Note: Feet-Inch format cannot be used to enter square or
cubic values.
User's Guide — 27
Examples of Square and Cubic Entry:
[Yds] [Yds] — Square Yards
(e.g., 5 [Yds] [Yds] will display 5. SQ YD).
[Yds] [Yds] [Yds] — Cubic Yards
(e.g., 5 [Yds] [Yds] [Yds] will display 5. CU YD).
[Feet] [Feet] — Square Feet
(e.g., 5 [Feet] [Feet] will display 5. SQ FEET).
[Feet] [Feet] [Feet] — Cubic Feet
(e.g., 5 [Feet] [Feet] [Feet] will display 5. CU FEET).
[Inch] [Inch] — Square Inches
(e.g., 5 [Inch] [Inch] will display 5. SQ INCH).
[Inch] [Inch] [Inch] — Cubic Inches
(e.g., 5 [Inch] [Inch] [Inch] will display 5. CU INCH).
[m] [m] — Square Meters
(e.g., 5 [m] [m] will display 5. SQ M).
[m] [m] [m] — Cubic Meters
(e.g., 5 [m] [m] [m] will display 5. CU M).
[mm] [mm] — Square Millimeters
(e.g., 5 [mm] [mm] will display 5. SQ MM).
[mm] [mm] [mm] — Cubic Millimeters
(e.g., 5 [mm] [mm] [mm] will display 5. CU MM).
[Conv] [5] [5] — Square Centimeters
(e.g., 5 [Conv] [5] [5] will display 5. SQ CM).
[Conv] [5] [5] [5] — Cubic Centimeters
(e.g., 5 [Conv] [5] [5] [5] will display 5. CU CM).
28 — CONSTRUCTION MASTER PRO
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