Calculated Industries 4065 User Manual

ONSTRUCTION

ASTER

User s Guide

For Models:

4065 v3.1 Construction Master Pro

4080 v3.1 Construction Master Pro Trig

44080 v3.1 Construction Master Pro Desktop

This User’s Guide helps you solve common construction math and material estimation problems using the latest

Construction Master Pro

calculators—three of the most powerful feet-inch-fraction calculators to date:

The

Construction Master Pro III

Series —

1. Construction Master Pro (#4065 v3.1)

2. Construction Master Pro Trig (#4080 v3.1)

3. Construction Master Pro Desktop (#44080 v3.1)

IMPORTANT: The

Construction Master Pro Trig

does not have Block, Concrete Footing, Drywall, or Length, Width, and Height functions. These keys are replaced with standard trigonometric keys.

ONSTRUCTIONMASTER

3.1

SER’SGUIDE

The

Construction Master Pro

line includes the most advanced feet-

inch-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 volume, 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-inchfractions or decimal feet!

Your Calculator Helps You Solve:

• Dimensional Math Problems

• Conversions Between Feet-Inch-Fractions, Decimal Feet, Decimal Inches, and Yards

• Imperial/Metric Conversions

• Problems Involving All Common Fractions —

1/2” to 1/64”!

• Area/Volume Calculations

• Board Feet/Lumber Calculations

• Circle Calculations

• Column/Cone Area and Volume

• Compound Miter Cuts for Crown Moulding

• Material Estimations and Costs

• Polygons

• Rake-Walls

• Right Angle/Triangle Solutions

• Roofing Materials

• Stair Layout (Risers/Treads)

• Studs

• Weight/Volume Conversions

Pro and Desktop Models (

NOT AVAILABLE ON TRIG MODEL

#4080)

Also Solve:

• Block/Bricks, Concrete Footings and Drywall

• Instant Square-up, Perimeter, Wall Area, Room Area and Volume

INTRODUCTION

GETTING STARTED..........................................................................1

KEY DEFINITIONS .........................................................................1

Basic Operation Keys ..................................................................1

Convert Ç Key –

Unit Conversions and Second Functions

....1

Memory and Storage Functions...................................................2

Recall ® Key.............................................................................3

Dimensional Measurement Unit Keys..........................................3

Area and Volume Keys (NOT AVAILABLE ON TRIG MODEL #4080)......4

Weight Keys.................................................................................5

Construction Project Keys and Functions ....................................6

Block/Brick Function (NOT AVAILABLE ON TRIG MODEL #4080)..........6

Circular/Arc Function Keys ..........................................................7

Column/Cone Function................................................................8

Compound Miter/Crown Moulding Keys......................................8

Drywall Function (NOT AVAILABLE ON TRIG MODEL #4080)................9

Footing Function (NOT AVAILABLE ON TRIG MODEL #4080) ................9

Polygon Function.........................................................................9

Right Triangle/Roof Framing Keys.............................................10

Hip/Valley and Jack Rafter Keys................................................11

Rake-Wall Function....................................................................13

Roof Materials/Covering Function..............................................14

Stair Key ....................................................................................14

Studs Function...........................................................................16

Trigonometric Keys (TRIG #4080 AND DESKTOP #44080

MODELS ONLY)...........................................................................16

ENTERING DIMENSIONS............................................................18

Entering Linear Dimensions .......................................................18

Entering Square/Cubic Dimensions...........................................18

SETTING FRACTIONAL RESOLUTION.......................................20

Setting Fraction Resolution –

Using the Preference

Setting Mode

...........................................................................20

Converting a Fractional Value to a Different Resolution ............21

CONVERSIONS (LINEAR, AREA, VOLUME)..............................22

Linear Conversions....................................................................22

Converting Feet-Inch-Fractions to Decimal Feet.......................22

Converting Decimal Feet to Feet-Inch-Fractions.......................22

Converting Fractional Inches to Decimal Inches.......................23

Converting Decimal Inches to Fractional Inches.......................23

Square Conversions ..................................................................23

TABLE OF CONTENTS

Cubic Conversions.....................................................................23

PERFORMING BASIC MATH WITH DIMENSIONS.....................24

Adding Dimensions....................................................................24

Subtracting Dimensions.............................................................24

Multiplying Dimensions..............................................................24

Dividing Dimensions ..................................................................24

Percentage Calculations............................................................25

MEMORY OPERATION ................................................................25

Basic Cumulative Memory (M+).................................................26

Permanent Storage Registers (M1 and M2)..............................26

PAPERLESS TAPE OPERATION.................................................27

EXAMPLES –

USING THE CONSTRUCTION MASTER PRO

......29

LINEAR MEASUREMENT EXAMPLES ........................................29

Adding Linear Measurements....................................................29

Cutting Boards...........................................................................29

Window Measurement...............................................................30

Calculating the Center Point......................................................30

AREA CALCULATIONS ................................................................31

Square Area (x2) ........................................................................31

Area of a Rectangular Room (LxW) ..........................................31

Using Multi-Function W Key to Find Area, Square-up and

Perimeter (NOT AVAILABLE ON TRIG MODEL #4080)......................31

VOLUME CALCULATIONS...........................................................32

Rectangular Containers (LxWxH)..............................................32

Using the Multi-Function h Key to Find Volume,

Wall Area and Room Area

(NOT AVAILABLE ON TRIG MODEL #4080) ......................................32

Volume of a Cylinder..................................................................33

Volume of a Cone......................................................................33

WEIGHT/VOLUME CONVERSIONS............................................34

Weight Conversions...................................................................34

Weight per Volume/Volume Conversions...................................34

BLOCKS/BRICKS (NOT AVAILABLE ON TRIG MODEL #4080)...............35

Number of Blocks, Based on Entered Length and Height ........35

Number of Blocks, Based on Entered Area...............................35

Number of Blocks, Based on Calculated Perimeter ..................36

Number of Blocks, Based on Entered Length ...........................36

Number of “Face” Bricks ...........................................................37

Number of “Paver” Bricks .........................................................37

BOARD FEET –

LUMBER ESTIMATION

.....................................38

Total Board Feet –

With Dollar Cost

..........................................38

Number of Board Feet Based on Entered Volume ....................38

CIRCLE AND ARC CALCULATIONS ............................................39

Circumference and Area of a Circle...........................................39

Arc Length –

Degree and Diameter Known

...............................39

Arc Length –

Chord Length and Segment Rise Known

.............39

Arc Calculations –

Arc Length and Diameter Known

................40

ARCHED SEGMENT WALLS.......................................................41

Arched Segment Walls –

Arched Windows (No Base)

..............41

Arched Segment Walls –

Arched Windows (With Base)

...........42

Arched Segment Walls –

Chord Length and Segment Height

Known

.....................................................................................43

COMPOUND MITER.....................................................................45

Compound Miter Cuts................................................................45

CONCRETE/PAVING....................................................................46

Volume of Concrete for a Driveway...........................................46

Concrete Columns.....................................................................47

Complex Concrete Volume........................................................48

Polygon, Finding Angles Based on Entered Radius and

Number of Sides.....................................................................49

Concrete Footings (NOT AVAILABLE ON TRIG MODEL #4080)...........50

Squaring-up a Foundation .........................................................51

DRYWALL (NOT AVAILABLE ON TRIG MODEL #4080)...........................52

Number of Drywall Sheets for a Given Area..............................52

Number of Drywall Sheets for a Given Length..........................52

GRADE/SLOPE.............................................................................53

Back-Fill on a Slope –

Percent of Grade Known

.......................53

RIGHT TRIANGLE AND ROOF FRAMING EXAMPLES..............54

Roof Framing Definitions ...........................................................55

Degree of Pitch..........................................................................57

Percent Grade............................................................................57

Pitch Ratio or Slope...................................................................57

Common Rafter Length..............................................................58

Common Rafter Length –

Pitch Unknown

.................................58

Angle and Diagonal (Hypotenuse).............................................59

Rise............................................................................................59

Rise and Diagonal......................................................................59

Sheathing Cut............................................................................60

Regular Hip/Valley and Jack Rafters ........................................60

Jack Rafters –

Using Other Than 16-Inch On-Center

Spacing

..................................................................................61

Irregular Hip/Valley and Jack Rafters –

Descending, with

On-center Spacing Maintained

...............................................62

Irregular Hip/Valley and Jack Rafters –

Ascending, with

Jacks Mating at Hip/Valley

......................................................64

Rake-Wall –

No Base

.................................................................66

Rake-Wall –

With Base

..............................................................67

ROOFING MATERIALS ................................................................68

Roof Covering –

Entering Pitch, Length and Width

..................68

Roof Covering –

Entering Rise, Run (No Pitch) and Area

.........69

STAIR LAYOUT EXAMPLES ........................................................70

Stair Layout Definitions..............................................................70

Stairs –

Given Only Floor-to-Floor Rise

.....................................72

Stairs –

Given Only the Run

......................................................74

Stairs –

Given Rise and Run

.....................................................75

Stairs –

Given Rise and Run, Using “Riser Limited” Function

for Code Restrictions

..............................................................76

Baluster Spacing........................................................................77

STUDS..........................................................................................78

BASIC D:M:S AND TRIGONOMETRY EXAMPLES.....................78

Converting Degrees:Minutes:Seconds ......................................78

Time Calculations Using D:M:S.................................................78

TRIGONOMETRIC FUNCTIONS..................................................79

Converting Percent Grade to D:M:S..........................................80

Converting Tangent/Pitch to Angle.............................................80

Converting Roof Angle in Degrees to Pitch in Inches................80

Angle –

Rise and Hypotenuse Known

.......................................81

APPENDIX A –

DEFAULT SETTINGS

............................................82

APPENDIX B –

PREFERENCE SETTINGS

....................................83

How to Set Preferences.............................................................86

Accessing Preference Settings..................................................86

APPENDIX C –

CARE INSTRUCTIONS

.........................................89

APPENDIX D –

IMPORTANT NOTES FOR OWNERS OF

PREVIOUS CONSTRUCTION MASTERS

..................................90

APPENDIX E –

ACCURACY/ERRORS, AUTO SHUT-OFF,

BATTERIES, RESET

....................................................................91

ACCURACY/ERRORS ..................................................................91

Error Codes................................................................................91

AUTO SHUT-OFF .........................................................................91

BATTERIES ...................................................................................92

Replacing the Battery(ies)..........................................................92

Battery Replacement Instructions..............................................92

RESET ..........................................................................................92

APPENDIX F –

AREA/VOLUME FORMULAS

................................93

AREA FORMULAS........................................................................93

SURFACE AREA/VOLUME FORMULAS .....................................94

REPAIR AND RETURN ...................................................................95

WARRANTY.....................................................................................96

INDEX...............................................................................................99

SER’SGUIDE

— 1

KEY DEFINITIONS

Basic Operation Keys

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. For desktop model 44080, press Ç o to turn power off.

+ – x Arithmetic operation keys.

÷ =

% Four-function (+, -, x, ÷) percent key. (See page 25

for examples.)

0 – 9 and • Keys used for entering digits. ) (DESKTOP ONLY) Enters “00” to save keystrokes (e.g.,

1 ) to enter 100).

Backspace Key

— Used to delete entries one keystroke at a time (unlike the o function, which deletes the entire entry).

Convert Ç Key —

Unit Conversions and Second Functions

The Ç key is used to convert between measurement units or to access the second functions listed below:

Ç x

Clear All

— Clears all values, including Memory. Resets all permanent entries to default values (except Preference Settings which are retained).

Note: Use only when necessary, as it resets all stored values to factory defaults. See page 82 for a listing of default values.

Ç %

— Squares the value in the display. For example,

to square the value 10, enter 1 0 then Ç %.

Ç B

Square Root Function ( )

— Used to find the square root of a non-dimensional or area value (e.g., 1 0 0 Ç B = 10).

Ç /

x10

— Allows entry of an exponent. For example,

8 Ç / 1 4 is 8 times 10 to the 14th power.

Ç ÷

1/x

— Finds the reciprocal of a number (e.g., 8

Ç ÷ = 0.125).

GETTING STARTED

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Ç –

Change Sign (+/–)

— Toggles the sign of the dis-

played value to positive or negative.

Ç +

Pi (π)

— Constant = 3.141593

Ç •

Degrees:Minutes:Seconds (dms deg)

—

Converts between D:M:S and decimal degree formats.

Ç 0

Total Cost (Cost)

— Calculates total material cost

given a unit dimension and an entered Per Unit Cost.

Ç ß

Access Preference Settings (Prefs)

— Used to access various customizable settings, such as dimensional answer formats (see Preference Settings on page 83).

Memory and Storage Functions

Cumulative Memory

— Whenever the µ key is pressed, the displayed value will be added to the Memory. Other memory functions:

FUNCTION KEYSTROKES

Add to Memory µ Subtract from Memory Ç µ Recall total in Memory ® µ Display/Clear Memory ® ® Clear Memory Ç ®

Memory is semi-permanent, clearing only when you:

1) turn off the calculator;

2) press ® ®;

3) press Ç ®;

4) press Ç x

(Clear All)

When memory is recalled (® µ), consecutive presses of µ will display the calculated average and total count of the accumulated values.

ß 1 – 3

Storage Registers (M1) through (M3)

— Stores the displayed value in non-cumulative, permanent Memory (e.g., 1 0 ß 1). Good for storing a single value, for future reference (® 1 = 10).

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 a Clear All

( Ç x)

SER’SGUIDE

— 3

Recall ® Key

The ® key is used to recall or review stored values (e.g., ® p to recall a previously entered pitch value). It is also used in reviewing stored settings, or in Paperless Tape and Memory operation (see below).

® =

Paperless Tape (Tape)

— Accesses the paperless tape mode (see “Paperless Tape” page 27), which keeps track of your past 20 entries. Useful for checking strings of numbers.

® ®

Clear M+

— Displays and clears M+.

® µ

Recall M+

— Displays value stored in M+.

® 1 – 3

Recall (M1) through (M3)

— Recalls the value

stored in M1, M2, or M3.

Dimensional Measurement Unit Keys

The following keys are used for entering units of measure, with ease and accuracy:

Yards

— Enters or converts to

Yards

Feet

— Enters or converts to

Feet

. Also used with the i and / keys for entering Feet-Inch values (e.g., 6 f 9 i 1 / 2).

Note: Repeated presses of fafter Çtoggle between FeetInches and Decimal Feet (e.g.,

6 f 9 i 1 / 2 Ç f =

6.791667 Feet; press fagain to return to Feet-Inch-Fractions).

Inches

— Enters or converts to

Inches

. Also used with the / key for entering fractional Inch values (e.g., 9 i 1 / 2).

Note: Repeated presses of iafter Çtoggle between Fractional and Decimal Inches (e.g.,

9 i 1 / 2 Ç i =

9.5 Inch; press iagain to return to Fractional Inches).

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 automatically used (e.g., entering 1 5 / = or + will display 15/16, based on the default fractional resolution setting of 16ths.

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Meters

— Enters or converts to

Meters

Ç 7

Centimeters (cm)

— Enters or converts to

Centimeters

Ç 9

Millimeters (mm)

— Enters or converts to

Millimeters

Ç 2

Acres (Acre)

— Enters or converts (a square value)

Acres

Ç 8

Board Feet (Bd Ft)

— Enters or converts cubic

values to

Board Feet

. One Board Foot is equal to

144 Cubic Inches.

Area and Volume Keys (NOT AVAILABLE ON TRIG MODEL #4080)

Length

— Enters a length for calculation of area or

volume.

Width

— A multi-function key used to enter a width for calculation of area or volume (if a length and height are also entered). Consecutive presses of this key display or calculate:

Press Result

1 Displays Entered Width (WDTH) 2 Area (AREA) 3 Square-up (SQUP) 4 Perimeter (PER) 5 Redisplays Entered Length (LNTH) 6 Redisplays Entered Width (WDTH)

Height

— A multi-function key used to enter a height for calculation of volume (if a length and width are also entered). Consecutive presses of this key display or calculate:

Press Result

1 Displays Entered Height (HGHT) 2 Volume (VOL) 3 Wall Area (WALL) 4 Total Room Area (ROOM) 5 Redisplays Entered Length (LNTH) 6 Redisplays Entered Width (WDTH)

SER’SGUIDE

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Weight Keys

Ç 1

Kilograms (kg)

— Enters or converts (a weight or vol-

ume value) to

Kilograms

. Adimensioned volume will

convert using the stored Weight per Volume value.

Ç 3

Metric Tons (met tons)

— Enters or converts (a

weight or volume value) to

Metric Tons

. Adimensioned volume will convert using the stored Weight per Volume value.

Ç 4

Pounds (lbs)

— Enters or converts (a weight or vol-

ume value) to

Pounds

. Adimensioned volume will

convert using the stored Weight per Volume value.

Ç 6

Tons (tons)

— Enters or converts (a weight or vol-

ume value) to

Tons

. Adimensioned volume will con-

vert using the stored Weight per Volume value.

ß 0

Store Weight per Volume (wt/vol)

— Stores a new

Weight per Volume

value as Tons per Cubic Yard or

other format, as listed below:

Note: After entering a value and pressing

ß 0

, continue pressing the 0digit key until you’ve reached the desired weight per volume format. To recall your setting, press

® 0

• Ton Per CU YD

• LB Per CU YD

• LB Per CU FEET

• MET Ton Per CU M

• kG Per CU M This value is permanently stored until you change it

or perform a

Clear All

(Ç x).

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Construction Project Keys and Functions

The following Construction Project Keys and Functions help you instantly figure quantities and costs of materials, so you can build like a pro!

Block/Brick Function (NOT AVAILABLE ON TRIG MODEL #4080)

The

Blocks

function helps you quickly estimate the quantity of blocks

or bricks required for building walls, walkways or other areas.

Ç l

Number of Blocks or Bricks (Blocks)

—

Calculates the number of

blocks (or bricks)

based on:

• an entered or calculated linear value

• an entered or calculated area

• an entered value in l

• values entered in l and h (solved area)

Uses a standard block/mortar area of 128 Square Inches and a block length of 16 Inches.

This function can also be used for calculating the number of “face” or “paver” bricks by storing a brick size (see below).

ß 4

Store Block or Brick Size (Blk Size)

— Used to

store: (1) a block area

other than the default block

area of 128 Square Inches

(e.g., 1 2 0 i i ß 4 stores an area of 120 Square Inches) and (2) a block length other than the default block length of 16 Inches (e.g., 1 8 i ß 4 stores a length of 18 inches). These values are permanently stored until you change them or perform a Clear All (Ç x). To recall the stored settings, press ® 4 (repeated presses of ® 4 toggle between block area and block length).

Note: For Brick Estimates — You may also enter a brick size using

ß 4

. For example, when building with standard “face”

bricks, enter a brick size of 21 Square Inches (

2 1 i i

ß 4

) or store a “paver” brick size of 32 Square Inches (

3 2

i i ß 4

; 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).

SER’SGUIDE

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Circular/Arc Function Keys

The circle key helps you quickly solve circular area, volume or arc problems.

Circle

— Displays and calculates the following val-

ues, given an entered circle diameter* or radius:

• Diameter (DIA)

• Circle area (AREA)

• Circumference (CIRC)

*To enter a diameter (e.g., 10 Feet), press

1 0 f C

Ç a

Radius

— Enters or calculates the

circle radius

(e.g., 5 f Ç a).

Arc Length or Degree of Arc

— Amulti-function

key that enters or calculates

Arc Length

Degree

of Arc

, and further solves for additional circular/arc values, including arched segment walls (based on the stored On-center spacing), listed below.

Press Result

1 Arc Length or Degree of Arc (ARC) 2 Chord Length (CORD) 3 Segment Area (SEG) 4 Pie Slice Area (PIE) 5 Segment Rise (RISE) 6 Stored On-Center Spacing (OC) 7 Length of Arched Wall 1* (AW 1)

* The calculator will calculate arched segment wall lengths (if applicable) with consecutive presses of the akey until it reaches the last wall length.

Run (Chord Length)

— Enters or calculates the

Chord Length

. Used in conjunction with an entered segment rise to solve for the radius of a circle or with an entered radius to solve for the segment rise.

Rise (Segment Rise)

— Enters or calculates the

segment rise

. Used in conjunction with an entered Chord Length to solve for the radius of a circle or with an entered radius to solve for the Chord Length.

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Column/Cone Function

The Column and Cone function helps you quickly estimate volume and surface area of columns or cones.

Ç C

Column and Cone (Column/Cone)

— With an entered diameter and height, the first and second presses of C (following Ç) will calculate the total volume and surface area of a

Column

; the third and fourth consecutive presses of C calculate the total volume and surface area of a

Cone

For Trig Model (#4080) Users:

As this model does not have a hkey, you must enter the height using the rkey.

Compound Miter/Crown Moulding Keys

The

Construction Master Pro

also calculates compound miter cut angle solutions for cutting and installing crown moulding on a wall. The Compound Miter function can also be used for finding angle cuts for many types of compound miter problems, such as siding, railing and trim.

Compound Miter

— With stored spring (crown) angle and entered wall corner angle*, consecutive presses of Â will calculate the following:

Press Result

1 Miter Angle (MITR) 2 Bevel Angle (BEVL) 3 Redisplays Stored Spring Angle (SPRG) 4 Redisplays Entered Wall Corner Angle (CRNR)

* Wall Corner Angle entries of less than 25 into Âwill be assumed to be the number of sides of a polygon; in this case, the calculator will calculate the unknown Wall Corner Angle first, then proceed with the above angle calculations.

ß Â

Store Spring Angle (Spring Angle)

— Stores a

value

other than the default spring (crown) angle of

45°

(e.g., 3 8 ß Â stores 38° spring angle). This value is permanently stored until you change it or perform a

Clear All

(Ç x). To recall the stored

setting, press ® Â.

SER’SGUIDE

— 9

Drywall Function (NOT AVAILABLE ON TRIG MODEL #4080)

Ç h

Drywall Sheets (Drywall)

— Calculates the number

of 4 x 8, 4 x 9, and 4 x 12

sheets

for an entered or

calculated area.

Footing Function (NOT AVAILABLE ON TRIG MODEL #4080)

The Footing function helps you quickly estimate the volume of concrete required for concrete footings.

Ç W

Footing

— Calculates total quantity of concrete

required for

concrete footings

based on an entered wall length and footing size. Size based on the default footing size of 264 Square Inches (industry standard).

ß 6

Store Footing Area (Ftg Area)

— Used to store a

value

other than the default footing size of 264

Square Inches

(e.g., 1 2 8 i i ß 6 stores a footing size of 128 Square Inches). This value is permanently stored until you change it or perform a

Clear All

(Ç x). To recall the stored

setting, press ® 6.

Polygon Function

The Polygon function is handy for calculating multi-sided shapes (such as found in concrete applications).

Ç R

Polygon

— With an entered diameter or radius and number of sides of a polygon-shaped figure, Ç R, calculates the following:

Press Result

1 Full Angle (FULL) 2 Bi-Sect, or Half Angle (HALF) 3 Side Length (SIDE) 4 Perimeter of Polygon (PER) 5 Area of Polygon (AREA) 6 Radius* (RAD) 7 Redisplays Entered Number of Sides (SIDE)

*Solves radius for an entered diameter or redisplays the entered radius.

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Right Triangle/Roof Framing Keys Right Triangle:

Using the Pythagorean theorem, the top row of keys on your

Construction Master Pro

will calculate 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: Rise, Run, Diagonal, or Pitch.

Pitch

— Enters or calculates the

Pitch

(slope) of a roof (or right triangle). Pitch is the amount of “rise” over 12 Inches (or one meter) of “run.” Pitch may be entered as:

• a dimension: 9 i p

• an angle or degrees: 3 0 p

• a percentage (percent grade): 7 5 % p

• a pitch ratio: 0 • 7 5 Ç p Once a Pitch in one of the above formats is entered,

consecutive presses of p will convert to the remaining Pitch formats listed above (e.g., Pitch in Inches will convert to Pitch Degrees, Percent Grade and Pitch Ratio/Slope).

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 otwice.

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Ç p

Pitch Ratio or Slope (Slope)

— Enters the

Pitch

a ratio or

Slope

of a roof (or right triangle). For

example, 0.58 slope is entered as • 5 8 Ç

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.

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 d key will also display plumb and level cut angles in degrees.

Note: The Common rafter calculation is the “point-to-point” length and does not include the overhang or ridge adjustment.

Hip/Valley and Jack Rafter Keys

The

Construction Master Pro

uses the Rise, Run, Diagonal, Pitch

and On-center spacing values to calculate

Regular

and

Irregular

Hip/Valley and Jack rafter lengths (excluding wood thickness, etc.).

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When calculating Regular and Irregular Jack rafter lengths, you will see the letters “JK” (Regular 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/Valley Rafter

— Finds the Regular or Irregular

Hip/Valley

rafter length.

• Regular Hip/Valley Length:After right triangle/rafter values are entered or calculated (e.g., Pitch, Rise, Run), pressing H will calculate the length of the

Regular

Hip/Valley rafter.

• Irregular Hip/Valley Length: If an irregular pitch is entered (see next definition), pressing H will calculate the

Irregular

Hip/Valley rafter length. (An Irregular or “non-standard” roof has two different Pitches/Slopes.)

• Subsequent presses of the H key will also display plumb, level, and cheek cut angle values in degrees.

Ç H

Irregular Pitch (Ir/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 i Ç H

• an angle: 3 0 Ç H

• a percentage: 7 5 % Ç H

Note: An entered irregular pitch can be recalled by pressing

Ç H

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).

Repeated presses of the jkey will display the incremental jack adjustment, 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.

(Cont’d)

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(Cont’d)

Note: You may set your calculator to display the Jack Rafter lengths in either ascending or descending order (see Preference Settings on page 83).

Note: You may set your calculator to “mate up” with the Jack Rafters, rather than using the entered or default On-center spacing for both sides (see Preference Settings on page 83).

ß 5

Store On-center (o.c.) Spacing

— Used to store a

value

other than the default of 16 Inches On-center

(e.g., 1 8 i ß 5 stores an 18-inch On-center) for Jack Rafter calculations. Press ® 5 to review the stored value.

Ç j

Irregular Side Jacks (Ir/Jack)

— Operates same

as j, but displays the rafter values from the

Irregular

pitched side first.

Rake-Wall Function

Ç r

Rake-Wall (R/Wall)

— This function finds the stud

sizes in a

Rake-Wall

based on calculated or entered values for pitch, rise and/or run. Repeated presses of r will display the various sizes. 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 83). If a dimensional value is entered before pressing Ç r, this value will be taken as the Rake-Wall base size and automatically added to the various rafter lengths.

ß 5

Store On-center (o.c.) Spacing

— Used to store a

value

other than the default of 16 Inches On-center

(e.g., 1 8 i ß 5 stores an 18-inch On-center) for Rake-Wall stud calculations. Press ® 5 to review the stored value.

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Roof Materials/Covering Function

The

Construction Master Pro's Roof

function provides a quick calculation of roof area, number of squares and bundles, and number of 4 x 8 sheets required for roof coverage.

Ç d

Roof

— Given an entered Pitch (or Rise and Run) and plan area (or Length and Width), calculates the following:

Press Result

1 Roof Area (ROOF) 2 Number of Roof Squares (SQRS) 3 Number of Roof Bundles (BNDL) 4 Roof Bundle Size* (B-SZ) 5 Number of 4 x 8 Sheets (4X8) 6 Pitch (PTCH) 7 Plan Area (PLAN)

*Roof bundle size is 33.33 Square Feet.

Stair Key

The

Construction Master Pro

easily calculates stair layout solutions. With entered values for floor-to-floor rise and/or run, it will calculate Riser, Tread, Stringer, and Incline Angle values simply by pressing the s key.

Stair

— Amulti-function key that uses a stored Riser Height, stored Tread Width, stored Headroom Height and Floor Thickness, and entered Rise and Run values to calculate and display the following:

Press Result

1 Actual Riser Height (R-HT) 2 Number of Risers (RSRS) 3 Riser Overage/Underage (R+/-) 4 Tread Width (T-WD) 5 Number of Treads (TRDS) 6 Tread Overage/Underage (T+/-) 7 Stairwell Opening (OPEN) 8 Stringer Length (STRG) 9 Incline Angle* (INCL) 10 Run of Treads (RUN) 11 Floor-to-Floor Rise (RISE)

(Cont’d)

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(Cont’d)

Press Result

12 Stored (Desired) Riser Height (R-HT ) 13 Stored (Desired) Tread Width (T-WD ) 14 Stored Headroom (HDRM ) 15 Stored Floor Thickness (FLOR )

Note: Default values are 7-1/2 Inches for Desired Riser Height and 10 Inches for Desired Tread Width, 10 Inches for Floor Thickness, and 6 Feet 8 Inches for Headroom Height.

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.

*If the inclination angle exceeds the stored riser height and Tread Width ratio by 10%, the yield symbol will appear, indicating a steep incline.

ß 7

Store Desired Riser Height (Riser Ht)

— Stores a

value

other than the default desired stair riser height

of 7-1/2 Inches

(e.g., 8 i ß 7 stores an 8-inch desired stair riser height). To recall the stored setting, press ® 7.

ß 8

Store Floor Thickness/Height (Floor Ht)

— Stores

a value

other than the default desired floor thickness

of 10 Inches

(e.g., 8 i ß 8 stores an 8-inch desired floor thickness). To recall the stored setting, press ® 8. This is used, along with stored headroom height, for calculating the length of the stairwell opening.

ß 9

Store Desired Tread Width (Tread W)

— Stores a

value

other than the default desired stair Tread

Width of 10 Inches

(e.g., 1 2 i ß 9 stores a 12-inch desired stair Tread Width). To recall the stored setting, press ® 9.

Ç ß ß

Set Headroom Height

— Sets the desired

ß ß Headroom Height for calculation of the stairwell

opening.

Default is 6 Feet 8 Inches.

Use the + key to increase and the – key to decrease the stored headroom height. See Preference Settings instructions on page 86.

STORED

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Ç s

Riser Limited

— Used for situations when the riser height is limited by local code. When you press Ç s, the calculator will recalculate stair values so that the actual Riser Height will not exceed your

stored

desired Riser Height (e.g., it will never exceed the stored desired Riser Height of 7-1/2 Inches, if 7-1/2 Inches is the value stored using ß 7). To compensate for this limitation, the calculator will add one to the number of risers.

Studs Function

The

Construction Master Pro

also calculates the number of studs required for a wall using an entered length and stored On-center spacing value.

Ç 5

Studs

— Calculates the number of

studs

for an entered or displayed linear value. Based on the stored On-center spacing (16 inches is the default).

Trigonometric Keys (TRIG #4080 AND DESKTOP #44080 MODELS ONLY)

Tangent Ø = Opposite

Adjacent

Sine Ø = Opposite

Hypotenuse

Cosine Ø = Adjacent

Hypotenuse

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The

Trig

model (#4080) and

Desktop

(#44080) 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 Ç key with the trigonometric function displays the inverse (Arcsine, Arccosine, and Arctangent). These are used to find the angle for the Sine, Cosine, or Tangent value entered.

Sine Function

— Calculates the

Sine

of an entered

degree or non-dimensioned* value.

Ç S

Arcsine (sin -1)

— Calculates the angle for the

entered or calculated Sine value.

Cosine Function

— Calculates the

Cosine

of a

degree or non-dimensioned* value.

Ç ç

Arccosine (cos -1)

— Calculates the angle for the

entered or calculated Cosine value.

Tangent Function

— Calculates the

Tangent

of a

degree or non-dimensioned* value.

Ç t

Arctangent (tan -1)

— Calculates the angle for the

entered or calculated Tangent value.

*Cannot use on dimensioned values.

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ENTERING DIMENSIONS

Entering Linear Dimensions

When entering Feet-Inch-Fraction values, enter dimensions from largest to smallest — e.g., Feet before Inches, and Inches before Fractions. Enter Fractions by entering the numerator (top), pressing / (fraction bar key), and then the denominator (bottom).

Note: If a denominator is not entered, the fractional setting value is used.

Examples of Entering Linear Dimensions:

DIMENSION KEYSTROKES

Clear calculator

5 Feet 1-1/2 Inch 5 f 1 i 1 / 2

Clear calculator

5 Yards 5 y

Clear calculator

17.5 Meters 1 7 • 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 again.

Enter Square and Cubic dimensions in the following order: (1) Enter numerical value (e.g., 1 0 0).

(2) Press desired unit key (e.g., f) to label value as “linear”.

KEYSTROKE DISPLAY

o o 0. 1 0 0 f 100 FEET

(3) Second press of unit key (e.g., f f) labels value as “Square”.

KEYSTROKE DISPLAY

o o 0. 1 0 0 f f 100 SQ FEET

(4) Third press of unit key (e.g., f f f) labels value as “Cubic”.

KEYSTROKE DISPLAY

o o 0. 1 0 0 f f f 100 CU FEET

Note: Feet-Inches format cannot be used to enter Square or Cubic values.

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Examples of Entering Square and Cubic Dimensions:

YARDS

y y —

Square Yards

(e.g., 5 y y will display 5 SQ YD).

y y y —

Cubic Yards

(e.g., 5 y y y will display 5 CU YD).

FEET

f f —

Square Feet

(e.g., 5 f f will display 5 SQ FEET).

f f f —

Cubic Feet

(e.g., 5 f f f will display 5 CU FEET).

INCHES

i i —

Square Inches

(e.g., 5 i i will display 5 SQ INCH).

i i i —

Cubic Inches

(e.g., 5 i i i will display 5 CU INCH).

METERS

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).

CENTIMETERS

Ç 7 7 —

Square Centimeters

(e.g., 5 Ç 7 7 will display 5 SQ CM).

Ç 7 7 7 —

Cubic Centimeters

(e.g., 5 Ç 7 7 7 will display 5 CU CM).

MILLIMETERS

Ç 9 9 —

Square Millimeters

(e.g., 5 Ç 9 9 will display 5 SQ MM).

Ç 9 9 9—

Cubic Millimeters

(e.g., 5 Ç 9 9 9 will display 5 CU MM).

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SETTING FRACTIONAL RESOLUTION

The

Construction Master Pro

is set to display fractional answers in 16ths of an Inch. All examples in this User’s Guide are based on 1/16”. However, you may select the fractional resolution to be displayed in other formats (e.g., 1/64”, 1/32”, etc.). The method for permanently changing fractional resolution is shown below.

Setting Fractional Resolution —

Using the Preference Setting Mode

KEYSTROKE DISPLAY

1. Access Preference Settings:

Ç ß

(Prefs)

FRAC 0-1/16 INCH*

2. Access Next Fraction Subsetting:

+ FRAC 0-1/32 INCH + FRAC 0-1/64 INCH + FRAC 0-1/2 INCH + FRAC 0-1/4 INCH + FRAC 0-1/8 INCH +

(repeats options)

FRAC 0-1/16 INCH

3. To Permanently Set the Fractional Resolution You Have Selected Above, press

(or any key) to set the displayed Fractional

Resolution and Exit Preference Settings.

o 0.

4. To Recall Your Selected Fractional Resolution:

® / STD 0-1/16 INCH

*1/16” is the default setting. The display may differ from the example depending on what the resolution is currently set to.

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Converting a Fractional Value to a Different Resolution

Add 44/64th to 1/64th of an Inch and then convert the answer to other fractional resolutions:

KEYSTROKE DISPLAY

o o 0. 4 4 / 6 4 0-44/64 INCH + 1 / 6 4 = 0-45/64 INCH Ç 1

(1/16)

0-11/16 INCH

Ç 2

(1/2)

0-1/2 INCH

Ç 3

(1/32)

0-23/32 INCH

Ç 4

(1/4)

0-3/4 INCH

Ç 6

(1/64)

0-45/64 INCH

Ç 8

(1/8)

0-3/4 INCH

o o* 0.

* Changing the Fractional Resolution on a displayed value does not alter your Permanent Fractional Resolution Setting (set via Preference Settings).

Note: This setting is temporary; it will revert back to your permanent fractional setting upon press of o, or when you turn the calculator off.

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CONVERSIONS (LINEAR, AREA, VOLUME)

Linear Conversions

Convert 14 Feet to other dimensions:

KEYSTROKE DISPLAY

o o 0. 1 4 f 14 FEET Ç y 4.666667 YD Ç f 14 FEET 0 INCH Ç i 168 INCH Ç m 4.267 M Ç 7

(cm)

426.72 CM

Ç 9

(mm)

4267.2 MM

Note: When performing multiple conversions, you only have to press the Çkey once except when accessing secondary functions, such as

Ç 7

for Centimeters.

Converting Feet-Inch-Fractions to Decimal Feet

Convert 15 Feet 9-1/2 Inches to Decimal Feet. Then convert back to Feet-Inch-Fractions.

KEYSTROKE DISPLAY

o o 0. 1 5 f 9 i 1 / 2 15 FEET 9-1/2 INCH Ç f 15.79167 FEET f* 15 FEET 9-1/2 INCH

Converting Decimal Feet to Feet-Inch-Fractions

Convert 17.32 Feet to Feet-Inch-Fractions.

KEYSTROKE DISPLAY

o o 0. 1 7 • 3 2 f 17.32 FEET Ç f 17 FEET 3-13/16 INCH f* 17.32 FEET

* Repeated presses of for iwill toggle between Feet-Inch-Fractions and Decimal Feet or Inches.

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