Calculated Industries 4050 Construction Master 5 Reference Guide

The Calculated Industries 4050 is an advanced feet-inch-fraction calculator that can solve complex dimensional problems, calculate stair layouts, handle roofing materials, do circle/arc calculations, and more. It features a large display, user-friendly interface, and a variety of functions to help you save time and work more accurately on your projects.

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ONSTRUCTION

ASTER

ADVANCED FEET-INCH-FRACTION CALCULATOR

Model 4050

Pocket Reference Guide

Direction

Insert This

C

ONSTRUCTION

M

ASTER

5

v 3.1

The Construction Master 5 calculator helps you save time, cut costly errors and build like a pro!

Quickly Solve:

• Feet-Inches-Fractions, Yards, Metric

Dimensional Problems and Conversions

• Problems Involving All Fractions

— 1/2-1/64ths!

• Areas, Volumes and Weights

• Circle/Arc Calculations

• Common, Hip/Valley, Jack Rafter

Lengths (Regular and Irregular)

• Rake-Wall Solutions

• Concrete, Flooring Quantity

• Roofing Materials

• Squaring-Up

• Stair Layout Solutions, and more!

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

KEY DEFINITIONS/FUNCTIONS..........1

Basic Function Keys ............................1

Dimension Keys...................................2

Arc/Circle Keys ....................................4

Right Triangle/Roof Framing Keys ......4

Stair Layout Key ..................................7

Stair Settings .......................................8

Miscellaneous Functions .....................8

PAPERLESS TAPE EXAMPLE ...........10

PREFERENCE SETTINGS .................11

ENTERING DIMENSIONS ..................13

Linear Dimensions.............................13

Square and Cubic Dimensions..........13

Linear Conversions............................14

Square and Cubic Conversions.........15

BASIC MATH OPERATIONS ..............15

EXAMPLES ...........................................16

Adding and Subtracting Strings of

Dimensions.....................................16

Multiplying Dimensions......................16

Dividing Dimensions ..........................17

Percent Calculations..........................17

Square Area.......................................18

Rectangular Area and Volume...........18

Entering Square and Cubic and

Adding a Waste Allowance .............19

Weight Conversions ..........................19

Weight per Volume ............................20

Using the Memory .............................21

Board Feet and Cost .........................22

Carpentry — Calculating Number of Studs ..........................................22

Baluster Spacing ...............................23

Circle Area and Circumference .........24

Arc Angle or Degree ..........................24

Concrete Volume for Driveway..........25

Concrete Columns.............................25

Complex Concrete Volume................26

RIGHT ANGLE/FRAMING ...................28

Squaring-Up a Foundation ................29

Pitch — Converting Roof Angle.........29

Converting Slope ...............................30

Common Rafter Length .....................30

Regular Hip/Valley and Jack

Rafters............................................31

Irregular Hip/Valley ............................33

Rake-Wall — No Base.......................34

STAIRS ................................................35

Stairs — Given Rise and Run ...........35

Stairs — Given Only the Floor-to-Floor

Rise; Entering Other Than 7-1/2 Inch

Desired Riser Height ......................37

APPENDIX ............................................38

Setting Fractional Resolution.............38

Default Settings .................................39

Auto-Shut Off .....................................39

Accuracy/Errors .................................40

Battery ...............................................41

Replacing the Battery ........................41

Reset .................................................41

AREA AND VOLUME FORMULAS .....42

REPAIR AND RETURN .......................44

WARRANTY ........................................45

FCC CLASS B .....................................47

LOOKING FOR NEW IDEAS ..............47

GETTING STARTED

KEY DEFINITIONS / FUNCTIONS

Basic Function Keys

+ – x

÷ =

0 – 9 and •

O o

√

Ç √

Arithmetic operation keys.

Keys used for entering numbers.

Percent Key — Four-function (+, –, x, ÷) percent key.

Off Key — Turns all power off, clearing all non-permanent registers.

On/Clear Key — Turns on power. Pressing once clears the display. Pressing twice clears all temporary values.

Convert Key — Used with the dimensional keys to convert between dimensions or with other keys to access special functions.

Square Root Key — Used to find the Square Root of a non-dimensional or area value.

x 2 Function — Finds the

Square of a linear or nondimensional value.

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Ç µ

Ç ®

® ®

Recall Key — Used with other keys to recall stored values and settings.

Memory Key — Adds the displayed value to Memory.

Clears when the calculator is shut off.

Memory Minus (M–) —

Subtracts the displayed value from Memory.

Memory Clear — Clears

Memory without changing current display.

Memory Clear — Clears

Memory and displays

Memory Total.

Dimension Keys y f

Yards Key — Enters or converts to Yards.

Feet Key — Enters or converts to Feet as whole or decimal numbers. Also used with the i and / keys for entering Feet-Inch values (e.g., 6 f 9 i

1 / 2 ). Repeated presses during conversions toggle between Fractional and

Decimal Feet.

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/ m c

M b

Inch Key — Enters or converts to Inches. Entry can be whole or decimal numbers. Also used with the / key for entering fractional inch values (e.g., 9 i 1

/ 2 ). Repeated presses during conversions toggle between Fractional and

Decimal Inches.

Fraction Bar Key — Used to enter Fractions. Fractions can 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 accuracy setting is automatically used.

Meters Key — Enters or converts to Meters.

Centimeters Key — Enters or converts to Centimeters.

Millimeters Key — Enters or converts to Millimeters.

Board Feet Key — Enters or converts Cubic values to

Board Feet. One Board

Foot is equal to 144 Cubic

Inches.

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w Weight Key — Enters or converts (a volume value) to Tons, Pounds, Metric

Tons or Kilograms.

Repeated presses will cycle through these units.

Arc/Circle Keys

Ç C

Circle Key — Calculates

Circle Area and

Circumference based on entered Diameter.

Arc — Calculates Arc

Length or Degree based on entered Diameter and Arc

Degree or Length (e.g., if

Arc Degree is entered, it will calculate Arc Length, and vice versa).

Right Triangle/Roof Framing Keys p Pitch Key — This key is used to enter or calculate the Pitch (Slope) of a roof

(or Right Triangle). Pitch is the amount of “Rise” over

12 Inches of “Run.” Pitch may be entered as:

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Ç p r

R d

H a Dimension an Angle

9 i p

3 0 p a Ratio 0 • 7 5 Ç p a Percentage 7 5 % p

A Pitch entry will remain in permanent storage until revised or reset. A solution will be replaced by its entered value once the calculator is cleared.

Enters Pitch Ratio (e.g., •

5 8 3 Ç p ).

Rise Key — Enters or calculates the Rise or vertical leg (height) of a Right

Triangle.

Run Key — Enters or calculates the Run or horizontal leg (base) of a Right

Triangle.

Diagonal Key — Enters or calculates the common or

Diagonal leg (Hypotenuse) of a Right Triangle. Typical applications are “squaring” slabs or finding common rafter lengths.

Hip/Valley Key —

Calculates length of the

Regular or Irregular Hip/

Valley rafter.

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Ç H j

Ç j

∑

Irregular Pitch — Enters

Irregular Pitch used to calculate lengths of the

Irregular Hip/Valley and

Jack rafters.

Jack Key — Calculates

Jack rafter lengths on the

Regular-pitched roof side.

Irregular Jack — Calculates

Jack rafter lengths on the

Irregular-pitched roof side.

Rake-Wall Key — Finds the stud sizes based on entered Right Triangle values and the stored On-

Center spacing. If a dimensional value is entered before pressing ∑ , that value is considered the base and will be added to the stud lengths.

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Stair Layout Key s Stair Key — Given Rise and/or Run and entered/ stored variables, calculates or displays:

Press Result

1 Riser Height

Number of Risers

Riser Overage/

Underage

Tread Width

Number of Treads

Tread Overage/

Underage

Stringer Length

Angle of Incline

Stored Run

Stored Rise

Stored Desired

Riser Height

Stored Desired

Tread Width

STAIR DEFAULT VALUES

• 7-1/2” Desired Riser Height

• 10” Desired Tread Width

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Stair Settings

You may set “desired Riser height” and

“desired Tread width” to any value by using the following keys:

Ç 7

Ç 9

Riser Height — Stores a desired Riser height other than 7-1/2” (default). For example, enter 8 Inches:

8 i Ç 7 .

Tread Width — Stores a desired Tread width other than 10” (default). For example, enter 12 Inches:

1 2 i Ç 9 .

Miscellaneous Functions

Ç ÷

Ç x

Ç –

Ç +

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

1/x — Finds the reciprocal of a number (e.g., 8 Ç

÷ 0.125).

Clear All — Returns all stored values to the default settings. (Does not affect

Preference Settings.)

(+/–) Toggle

Pi (

) 3.141593

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Ç √

√

Ç • x 2 — Squares the value in the display.

Square Root Key — Used to find the Square Root of a non-dimensional or area value.

Total Cost — Based on entry of per unit cost.

Ç 0 Store Weight per Volume

— Stores a new Weight per

Volume value as listed below:

Note: After entering a value and pressing Ç 0 , continue pressing the 0 digit 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

Ç 5

This value is stored until you change it or perform a

Clear All ( Ç x ).

On-Center Spacing (o.c.)

— Stores a new on-center spacing (e.g., 2 4 i

Ç 5 ). The value is used for jack and rake wall stud calculations. Default is 16”.

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® = Paperless Tape – Useful for checking figures, as it scrolls through your past 20 entries or calculations.

Press ® = to access

Paperless Tape mode.

Press + or – to scroll forward or backward. Press = to exit mode and continue with a new entry or calculation. See example below.

PAPERLESS TAPE EXAMPLE

Add 6 Feet, 5 Feet and 4 Feet, then access the paperless tape mode and scroll back through your entries. Then, back up one entry, exit the tape mode and add 10 Feet to the total.

KEYSTROKE o o

6 f +

5 f +

4 f =

® =

–

+ 1 0 f =

DISPLAY

FEET

INCH

FEET

INCH

FEET

INCH

TTL= 15

FEET

INCH

01 6

FEET

INCH

02 + 5

FEET

INCH

03 + 4

FEET

INCH

02 + 5

FEET

INCH

TTL= 15

FEET

INCH

FEET

INCH

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PREFERENCE SETTINGS

Press Ç , then % , then keep pressing % to toggle through the main settings. Press the + key to advance within sub-setting.

Use the – key to back up. Press o key to exit Preferences.

PRESS

Ç AND:

First press of % :

SETTING--FUNCTION

Second press of % :

Fractional Resolution:

--1/16

--1/32

--1/64

--1/2

--1/4

--1/8

--1/16 (repeats options)

Area Displays:

--Std.

--0.

SQ FEET

--0.

SQ YD

--0.

SQ M

--Std. (repeats options)

Third press of % : Volume Displays:

--Std.

--0.

CU YD

--0.

CU FEET

--0.

CU M

--Std. (repeats options)

(Cont’d)

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(Cont’d)

PRESS :

Fourth press of % :

SETTING--FUNCTION

Meter Linear Displays:

--0.000

--FLOAt

(floating point)

--0.000

(repeats options)

Fifth press of % :

Sixth press of % :

Decimal Degree Displays:

--0.00º

--FLOAt

--0.00º

(floating point)

(repeats options)

Fractional Mode:

--Std.

--COnSt

--Std. (repeats options)

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ENTERING DIMENSIONS

Linear Dimensions

When entering Feet-Inch values, enter dimensions from largest to smallest —

Feet before Inches, Inches before

Fractions. Enter Fractions by entering the numerator (top number), pressing /

(Fraction Bar key) and then the denominator (bottom number).

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

Examples of how linear dimensions are entered (press o after each entry):

DIMENSION KEYSTROKES

5 Yards 5 y

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

17.5 Meters 1 7 • 5 m

Square and Cubic Dimensions

Examples of how Square and Cubic dimensions are entered (press o after each entry):

DIMENSION KEYSTROKES

5 Cubic Yards 5 y y y

130 Square Feet 1 3 0 f f

33 Square Meters 3 3 m m

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Linear Conversions

Convert 10 Feet 6 Inches:

KEYSTROKE o o

1 0 f 6 i

Ç y

Ç i

Ç m

Ç c

Ç M

DISPLAY

FEET

INCH

3.5

126

INCH

3.200

320.04

3200.4

Convert 14 Feet 7-1/2 Inches to Decimal

Feet:

KEYSTROKE DISPLAY o o

1 4 f 7 i 1 / 2

FEET

7-1/2

INCH

Ç f 14.625

FEET

Convert 22.75 Feet to Feet-Inches:

KEYSTROKE o o

2 2 • 7 5 f

Ç f

DISPLAY

22.75

FEET

INCH

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Square and Cubic Conversions

Convert 14 Square Feet to Square Yards:

KEYSTROKE o o

1 4 f f

Ç y

DISPLAY

SQ FEET

1.555556

SQ YD

(1.6 square yards)

Convert 25 Square Yards to Square Feet:

KEYSTROKE o o

2 5 y y

Ç f

DISPLAY

SQ YD

225.

SQ FEET

Convert 12 Cubic Feet to Cubic Yards:

KEYSTROKE o o

1 2 f f f

Ç y

DISPLAY

CU FEET

0.444444

CU YD

BASIC MATH OPERATIONS

Your calculator uses standard chaining logic, which simply means that you enter your first value, the operator ( + , – , x ,

÷ ), the second value and then the Equals sign ( = ).

3 + 2 = 5.

3 – 2 = 1.

3 x 2 = 6.

3 ÷ 2 = 1.5

This feature also makes the calculator simple to use for dimensional applications.

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EXAMPLES

Adding and Subtracting Strings of

Dimensions

Add the following measurements:

• 6 Feet 2-1/2 Inches

• 11 Feet 5-1/4 Inches

• 18.25 Inches

Then subtract 2-1/8 Inches:

KEYSTROKE DISPLAY o o

6 f 2 i 1 / 2 +

FEET

2-1/2

INCH

1 1 f 5 i 1 / 4 +

FEET

7-3/4

INCH

1 8 • 2 5 i = 19

FEET

INCH

– 2 i 1 / 8 = 18

FEET

11-7/8

INCH

Multiplying Dimensions

What is the perimeter of a room with three walls which measure 15 Feet 3-3/4 Inches each?

KEYSTROKE DISPLAY

3 x 1 5 f 3 i 3 / 4 =

FEET

11-1/4

INCH

Multiply 5 Feet 3 Inches by 11 Feet 6-1/2

Inches:

KEYSTROKE DISPLAY

5 f 3 i x 1 1 f

6 i 1 / 2 = 60.59375

SQ FEET

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Dividing Dimensions

Divide 15 Feet 3-3/4 Inches into thirds

(divide by 3):

KEYSTROKE DISPLAY o o

1 5 f 3 i 3 / 4 ÷ 3 =

FEET

1-1/4

INCH

How many 3-Foot 6-Inch pieces can you cut from one 25-foot board?

KEYSTROKE DISPLAY o o 0.

2 5 f ÷ 3 f 6 i = 7.142857

(or 7 whole pieces)

Percent Calculations

Add a 10% waste allowance to 2.78 Cubic

Yards:

KEYSTROKE DISPLAY o o

2 • 7 8 y y y + 1 0 %

3.058

CU YD

What is 25% of $1,575?

KEYSTROKE o o

1 5 7 5 x 2 5 %

DISPLAY

393.75

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Square Area

Find the Area of a square room with sides measuring 15 Feet 8-1/2 Inches:

KEYSTROKE DISPLAY o o

1 5 f 8 i 1 / 2 Ç √ (x 2 )

246.7517

SQ FEET

Rectangular Area and Volume

Find the Area and Volume:

• Length: 20 Feet 6-1/2 Inches

• Width: 12 Feet 8-1/2 Inches

• Height: 10 Inches

First, multiply the Length times the Width to find the Area. Then, multiply the Area times the Height to find the Volume:

KEYSTROKE DISPLAY o o

2 0 f 6 i 1 / 2 x

FEET

6-1/2

INCH

1 2 f 8 i 1 / 2 x

261.0503

SQ FEET

1 0 i = 8.057109

CU YD

Convert to Feet:

Ç f 217.542

CU FEET

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Entering Square and Cubic and Adding a Waste Allowance

Add a 10% waste allowance to 55 Square

Feet. Then add a 20% waste allowance to

150 Cubic Feet:

KEYSTROKE DISPLAY o o 0.

5 5 f f + 1 0 % 60.5

SQ FEET

1 5 0 f f f + 2 0 %

180.

CU FEET

Weight Conversions

Convert 150 Pounds to other weights

(Tons, Metric Tons, Kilograms):

KEYSTROKE o o

1 5 0 w w *

Ç w w w

DISPLAY

150

0.068039

MET Ton

68.03886

0.075 kG

Ton

*Calculator may not display Pounds upon first press of w ; it depends on which unit was accessed last. So press w until LB (or desired unit) is displayed, then convert.

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Weight per Volume

Convert 20 Cubic Yards of concrete to

Tons, Pounds, Metric Tons and Kilograms, if concrete weighs 1.5 Tons per Cubic

Yard (default value):

KEYSTROKE o o

2 0 y y y

Ç w w w w

DISPLAY

CU YD

30.

Ton

60000.

27.21554

MET Ton

27215.54 kG

Now convert the above, if concrete weighs

2 Tons per Cubic Yard (store new Weight per Volume value):

KEYSTROKE

2 Ç 0

2 0 y y y

Ç w w w w

Ç x

DISPLAY

STORED

Ton Per CU YD

CU YD

36287.39 kG

40.

Ton

80000.

36.28739

MET Ton

ALL CLEARED

(Clear stored Wt/Vol)

*Calculator will present values in a different order based on previous computation; simply continue to press w key until desired value is displayed.

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Using the 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.

Example:

KEYSTROKE

3 5 5 µ

2 5 5 µ

7 4 5 Ç µ

® µ

® ®

TTL

DISPLAY

+ 355.

+ 255.

- 745.

STORED

AVG

– 135.

– 45.

CNT

+ – 135.

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Board Feet and Cost

Find the total Board Feet for the following boards: 2x4x16, 2x10x18 and 2x12x20.

What is the total cost at $275 per Mbm*?

*Per thousand Board Foot measure

KEYSTROKE DISPLAY o o

2 x 4 x 1 6 b µ

BDFT 10.66667

2 x 1 0 x 1 8 b µ

BDFT 30.

2 x 1 2 x 2 0 b µ

BDFT 40.

® ® x 2 7 5 Ç •

BDFT 80.66667

$ 22.

Carpentry — Calculating Number of Studs

Find the number of 16-Inch On-Center studs needed for an 18 Feet 7-1/2 Inch wall.

KEYSTROKE DISPLAY

1. Divide Length by spacing: o o 0.

1 8 f 7 i 1 / 2

FEET

7-1/2

INCH

÷ 1 6 i = 13.96875

(14 studs)

2. Add one for the end:

+ 1 = 14.96875

(15 studs)

Note: Also applies to trusses and joists.

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Baluster Spacing

You are going to install a handrail at the top of a balcony. Your total span is 156

Inches and you would like the space between the balusters to be about 4

Inches. If each baluster is 1-1/2 Inches wide, what is the exact spacing between each baluster?

KEYSTROKE DISPLAY

1. Estimate number of balusters in Span: o o

1 5 6 i ÷

5 i 1 / 2 = *

156

INCH

28.36364

(28 balusters)

*desired spacing plus baluster width (4 Inches plus

1-1/2 Inch)

2. Find total space ‘occupied’ by the balusters by multiplying the width of each baluster by the rounded number of balusters

(found above):

1 i 1 / 2 x

2 8 =

1-1/2

INCH

3. Find total space between all balusters:

1 5 6 i –

4 2 i =

156

114

INCH

4. Find actual baluster spacing by dividing total space between all balusters by the number of spaces between the balusters

(number of balusters plus one equals 29):

1 1 4 i ÷

2 9 =

114

3-15/16

INCH

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Circle Area and Circumference

Find the Area and Circumference of a

Circle with a Diameter of 25 Inches:

KEYSTROKE o o

2 5 i C

DISPLAY

DIA 25

INCH

AREA 490.8739

SQ INCH

CIRC 78-9/16

INCH

Arc Angle or Degree

Find the Arc Angle (or Degree of Arc), given a 5-Foot Diameter and an Arc

Length of 3 Feet 3 Inches:

KEYSTROKE

2. Find Degree of Arc:

Ç C

DISPLAY

1. Enter Circle Diameter and Arc Length: o o

5 f C

3 f 3 i

DIA 5

FEET

INCH

ARC 74.48°

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Concrete Volume for Driveway

Calculate the Cubic Yards of concrete required to pour a driveway that measures: 45 Feet 5 Inches long x 13 Feet 6

Inches wide x 5 Inches deep. If concrete is

$65 per Cubic Yard, what will it cost?

KEYSTROKE o o

4 5 f 5 i x 1 3 f 6 i x 5 i = x 6 5 Ç •

DISPLAY

FEET

INCH

FEET

INCH

9.461806

CU YD

$ 615.

(total cost)

Concrete Columns

You’re going to pour five Columns, each of which has a Diameter of 3 Feet 4-1/2

Inches and a height of 11 Feet 6 Inches.

How many Cubic Yards of concrete will you need for all five Columns?

KEYSTROKE o o

DISPLAY

1. Enter the Diameter of a Circle:

3 f 4 i 1 / 2 C

DIA 3

FEET

4-1/2

INCH

2. Find the Surface Area of a Circle:

C AREA 8.946176

SQ FEET

3. Find Total Volume: x 1 1 f 6 i =

102.881

CU FEET

Ç y x 5 =

3.810408

19.05204

CU YD

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Complex Concrete Volume

You’re going to pour an odd-shaped patio

4-1/2 Inches deep with the dimensions shown below. First, calculate the total Area

(by dividing the drawing into three individual rectangles) and then determine the total

Yards of concrete required for this job.

27’ 0”

8’ 6”

9’ 0”

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KEYSTROKE o o

DISPLAY

1. Find Area of Part “A” and add to Memory:

3 8 f 2 i –

4 f 2 i = x 2 7 f =

M+ 918.

FEET

918.

INCH

SQ FEET

2. Find Area of Part “B” and add to Memory:

4 f 2 i x 8 f 6 i =

FEET

INCH

35.41667

SQ FEET

µ M+ 35.41667

SQ FEET

3. Find Area of Part “C” and add to Memory:

9 f 9

FEET x 9 f 6 i = 85.5

SQ FEET

µ M+ 85.5

SQ FEET

4. Recall and Clear Total Area Stored in

Memory:

® ® M+ 1038.917

SQ FEET

5. Find Total Cubic Yards: x 4 i 1 / 2 = 14.4294

CU YD

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RIGHT ANGLE / FRAMING

The top row of keys provide you with builtin solutions to Right Triangles. The solutions are available in any of the linear dimensions offered on the calculator. Thus, you can solve Right Triangles directly in

Feet and Inches, Decimal Feet, Meters, etc.

Any value of a Right Triangle can be found given two of the four variables:

1) Rise, 2) Run, 3) Diagonal or 4) Pitch.

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Squaring-Up a Foundation

Square-Up (Diagonal)

15’ 6”

Square-Up 15 Feet 6 Inch (Run) x 10 Feet

2 Inch (Rise):

KEYSTROKE DISPLAY o o

1 5 f 6 i R

1 0 f 2 i r

RUN 15

FEET

INCH

RISE 10

FEET

INCH d DIAG 18

FEET

6-7/16

INCH

Pitch — Converting Roof Angle

Find the % Grade, Pitch Ratio/Slope and

Pitch in Inches if the roof angle is 30.25°:

KEYSTROKE o o

3 0 • 2 5 p p p p

DISPLAY

PTCH 30.25°

%GRD 58.31828

SLP 0.583183

PTCH 7

INCH

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Converting Slope

Find the Pitch in Inches, Pitch Degrees, and Percent Grade if the Pitch Ratio/Slope is 0.625:

KEYSTROKE o o

• 6 2 5 Ç p p p p

DISPLAY

SLP 0.625

PTCH 7-1/2

INCH

PTCH 32.01°

%GRD 62.5

Common Rafter Length

Find the Point-to-Point Length of the

Common rafter on a 7/12-Pitched roof with a Span of 28 Feet:

KEYSTROKE o o

DISPLAY

1. Enter Pitch:

7 i p

3. Find the Rise: r

PTCH 7

2. Enter half the Span as the Run:

2 8 f ÷ 2 =

RUN 14

FEET

INCH

RISE 8

FEET

INCH

4. Find the Length of the Common rafter: d DIAG 16

FEET

2-1/2

INCH

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Regular Hip/Valley and Jack Rafters

A roof’s Pitch is 9/12 and half the total

Span is 6 Feet. Find the lengths of the

Common, Hip/Valley and Jack rafters

(Jack rafters at 16 Inch On-Center spacing):

KEYSTROKE DISPLAY

1. Find the Common rafter length: o o

6 f R RUN 6

FEET

INCH

9 i p PTCH 9

INCH d (Common) DIAG 7

FEET

INCH

(Cont’d)

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(Cont’d)

KEYSTROKE DISPLAY

2. Find the Hip/Valley rafter and Jack rafter lengths:

H j j j j j j

H/V 9

JKOC

FEET

STORED

7-1/4

INCH

JK 1 5

FEET

INCH

JK 2 4

JK 3 2

JK 4 0

FEET

JK 5 0

FEET

INCH

*Uses standard (default) 16-Inch On-Center. To enter a new On-Center (e.g., 18 Inches) press

1 8 i Ç 5 . Press ® 5 to review stored value. This value will remain stored until you re-enter a new value or perform a Clear All

( Ç x ) .

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Irregular Hip/Valley

You’re working with a 7/12 Pitch and half of your overall Span is 15 Feet 7 Inches.

The Irregular Pitch is 8/12. Find the

Common rafter length, Irregular Hip/Valley and Jack rafter lengths.

KEYSTROKE o o

DISPLAY

1. Find Common Rafter Length:

7 i p

1 5 f 7 i R

PTCH 7

INCH

RUN 15

FEET

INCH d DIAG 18

FEET

0-1/2

INCH

2. Find Irregular Hip Rafter Length:

8 i Ç H

H IH/V 22

IPCH 8

FEET

7-3/8

INCH

3. Find Irregular Jack Lengths:

Ç j j * j j j j

IJOC

IJ1 14

FEET

IJ2 13

IJ3 12

STORED

11-13/16

FEET

IJ4 10

IJ5 9

FEET

2-3/16

9-3/8

4-1/2

INCH

Etc... Continue pressing j until last regular

Jack or “0.” is reached.

* It is not necessary to keep pressing Ç when displaying the Irregular Jack sizes.

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Rake-Wall — No Base

Find each stud size in a Rake-Wall with a peak of 3 Feet 6 Inches and a length of 6

Feet. Use 16 Inches as your spacing

(default):

KEYSTROKE DISPLAY

1. Enter Rise and Run: o o 0.

3 f 6 i r RISE 3

FEET

INCH

6 f R RUN 6

FEET

INCH

2. Find Stud Lengths:

∑

RWOC

RW 1 2

RW 2 1

STORED

FEET

8-11/16

11-5/16

RW 3 1

RW 4 0

FEET

4-11/16

BASE 0

FEET

INCH

3. Find Rake-Wall Angle of Incline:

∑ RW 30.26°

Note: To enter a base, enter the base height prior to pressing the ∑ key (e.g., 5 f ∑ ).

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STAIRS

Stairs — Given Rise and Run

You’re going to build a stairway that has a

Floor-to-Floor height of 10 Feet 1 Inch, a

Run of 12 Feet 5 Inches, and a desired

Riser Height of 7-1/2 Inches (default). Find the stair values:

KEYSTROKE DISPLAY

1. Enter Rise and Run: o o

1 0 f 1 i r

RISE 10

FEET

INCH

1 2 f 5 i R

RUN 12

FEET

INCH

(Cont’d)

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(Cont’d)

KEYSTROKE DISPLAY

2. Recall stored 7-1/2 Inch desired Riser

Height and find stair values:

® s s s s s s s s s

R-HT

T-WD

STORED

FEET

7-1/2

7-9/16

R+/– 0

7-5/16

INCH

RSRS 16.

9-15/16

INCH

TRDS 15.

T+/– 0-1/16

STRG 15

INCH

INCL 37.27°

*A in the display means the calculated Riser

Height or Tread Width is greater than the stored desired Riser Height or Tread Width.

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Stairs — Given Only the Floor-to-Floor

Rise; Entering Other Than 7-1/2 Inch

Desired Riser Height

Find stair values if the Floor-to-Floor Rise is 12 Feet 6 Inches, and the desired Riser

Height is 8 Inches:

KEYSTROKE DISPLAY

1. Enter desired Riser Height and Floor-to-

Floor Rise: o o

8 i Ç 7 R-HT

1 2 f 6 i r

STORED

INCH

RISE 12

FEET

INCH

2. Calculate stair values: s s s s s s s s s s s s

STRG 19

RISE

RUN 15

RSRS 19.

R+/– – 0-3/8

T-WD

STORED

R-HT 7-7/8

R-HT

T-WD

STORED

FEET

STORED

INCH

TRDS 18.

T+/– 0

FEET

1-1/8

INCH

INCL 38.22°

INCH

FEET

INCH

STORED

INCH

*Note: Run is calculated based on Tread values, as it was not entered. The Total Run of a stairway is equal to the width of each Tread multiplied by the number of Treads.

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APPENDIX

Setting Fractional Resolution

Fractional resolution is pemanently set via the Preference Settings (see Preference

Settings section for instructions). To select other formats temporarily (e.g., 1/64ths,

1/32nds, etc.), see the example below:

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

KEYSTROKE o o

4 4 / 6 4

+ 1 / 6 4 =

Ç 1 (1/16)

Ç 2 (1/2)

Ç 3 (1/32)

Ç 4 (1/4)

Ç 6 (1/64)

Ç 8 (1/8) o o

DISPLAY

0-44/64

0-45/64

0-11/16

0-1/2

0-23/32

0-3/4

0-45/64

0-3/4

INCH

Note: Changing the Fractional Resolution on a displayed value does not alter your Permanent

Fractional Resolution Setting. Pressing o will return your calculator to the permanently set fractional resolution.

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Default Settings

After a Clear All ( Ç x ), your calculator will return to the following settings:

STORED VALUES

Stair Riser Height

Stair Tread Width

On-Center Spacing

Weight per Volume

DEFAULT VALUE

7-1/2 Inch

10 Inch

16 Inch

1.5 Tons/Cu Yd

If you replace your batteries or perform a

Full Reset* (press O , hold down x , and press o ), your calculator will return to the following settings (in addition to those listed above):

PREFERENCE SETTINGS

Fractional Resolution

Area Display

Volume Display

Meter Linear Display

Decimal Degree Display

Fractional Mode

DEFAULT VALUE

1/16

Standard

0.000

0.00°

Standard

*Depressing the Reset button located above the p key will also perform a Full Reset.

Auto-Shut Off

Your calculator will shut itself off after about 8-12 minutes of non-use.

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Accuracy/Errors

Accuracy/Display Capacity —

You may enter or calculate values up to

19,999,999.99. Each calculation is carried out internally to twelve digits.

Errors — When an incorrect entry is made, or the answer is beyond the range of the calculator, it will display the word

“ERROR.” To clear an error condition you must hit the o button once. At this point you must determine what caused the error and re-key the problem.

Error Codes:

DISPLAY

0FL0

DIV Error

ERROR TYPE

Overflow (too large to display)

Divide by 0

DIM Error

ENT Error

Dimension error

Entry error

None Attempt to calculate stairs without entering Rise and

Run

Auto-Range — If an “overflow” is created because of an input and calculation with small units that are out of the standard range of the display, the answer will be automatically expressed in the next larger units (instead of showing “ERROR”) — e.g., 20,000,000 mm is shown as 20,000

Also applies to Inches, Feet and Yards.

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Battery

This model uses one (1) CR2016 battery

(included). Should your calculator display become very dim or erratic, replace the battery.

Note: Please use caution when disposing of your old batteries, as they contain hazardous chemicals.

Replacement batteries are available at most discount or electronics stores. You may also call Calculated Industries at

1-775-885-4900.

Replacing the Battery

Turn the calculator over and open user guide door located at the top. Pull battery holder out (top left corner) and turn over.

Remove old battery and slide new battery under tabs. Turn holder over (negative side facing you) and insert into calculator.

Reset

If your calculator should ever “lock up,” press Reset — a small hole located above the p key — to perform a total reset.

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AREA AND VOLUME FORMULAS

Area Formulas

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Volume Formulas

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REPAIR AND RETURN

Warranty, Repair and Return

Information

Return Guidelines

Please read the Warranty in this

User's Guide to determine if your

Calculated Industries product remains under warranty before calling or returning any device for evaluation or repairs.

If your product won't turn on, check the battery as outlined in the User's

Guide.

If you need more assistance, please go to the website listed below.

If you believe you need to return your product, please call a Calculated

Industries representative between the hours of 8:00am to 4:00pm Pacific

Time for additional information and a

Return Merchandise Authorization

(RMA).

Call Toll Free: 1-800-854-8075

Outside USA: 1-775-885-4900 www.calculated.com/warranty

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WARRANTY

Warranty Repair Service – U.S.A.

Calculated Industries (“CI”) warrants this product against defects in materials and workmanship for a period of one

(1) year from the date of original consumer purchase in the U.S. If a defect exists during the warranty period, CI at its option will either repair (using new or remanufactured parts) or replace (with a new or remanufactured calculator) the product at no charge.

THE WARRANTY WILL NOT APPLY TO THE PRODUCT

IF IT HAS BEEN DAMAGED BY MISUSE, ALTERATION,

ACCIDENT, IMPROPER HANDLING OR OPERATION,

OR IF UNAUTHORIZED REPAIRS ARE ATTEMPTED

OR MADE. SOME EXAMPLES OF DAMAGES NOT

COVERED BY WARRANTY INCLUDE, BUT ARE NOT

LIMITED TO, BATTERY LEAKAGE, BENDING, A

“BLACK INK SPOT” OR VISIBLE CRACKING OF THE

LCD, WHICH ARE PRESUMED TO BE DAMAGES

RESULTING FROM MISUSE OR ABUSE.

To obtain warranty service in the U.S., please go to the website.

A repaired or replacement product assumes the remaining warranty of the original product or 90 days, whichever is longer.

Non-Warranty Repair Service – U.S.A.

Non-warranty repair covers service beyond the warranty period, or service requested due to damage resulting from misuse or abuse.

Contact Calculated Industries at the number listed on the back cover to obtain current product repair information and charges. Repairs are guaranteed for 90 days.

Repair Service – Outside the U.S.A.

To obtain warranty or non-warranty repair service for goods purchased outside the U.S., contact the dealer through which you initially purchased the product. If you cannot reasonably have the product repaired in your area, you may contact CI to obtain current product repair information and charges, including freight and duties.

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Disclaimer

CI MAKES NO WARRANTY OR REPRESENTATION,

EITHER EXPRESS OR IMPLIED, WITH RESPECT TO

THE PRODUCT’S QUALITY, PERFORMANCE, MER-

CHANTABILITY, OR FITNESS FOR A PARTICULAR

PURPOSE. AS A RESULT, THIS PRODUCT, INCLUD-

ING BUT NOT LIMITED TO, KEYSTROKE PROCE-

DURES, MATHEMATICAL ACCURACY AND PREPRO-

GRAMMED MATERIAL, IS SOLD “AS IS,” AND YOU

THE PURCHASER ASSUME THE ENTIRE RISK AS TO

ITS QUALITY AND PERFORMANCE.

IN NO EVENT WILL CI BE LIABLE FOR DIRECT, INDI-

RECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

DAMAGES RESULTING FROM ANY DEFECT IN THE

PRODUCT OR ITS DOCUMENTATION.

The warranty, disclaimer, and remedies set forth above are exclusive and replace all others, oral or written, expressed or implied. No CI dealer, agent, or employee is authorized to make any modification, extension, or addition to this warranty.

Some states do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific rights, and you may also have other rights, which vary from state to state.

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FCC CLASS B

This equipment has been certified to comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of

FCC rules.

LOOKING FOR NEW IDEAS

Calculated Industries, a leading manufacturer of special-function calculators and digital measuring instruments, is always looking for new product ideas in these areas.

If you have an idea, or a suggestion for improving this product or User's Guide, please submit your comments online at www.calculated.com under “Contact Us,”

“Product Idea Submittal Agreement”.

Thank you.

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This equipment has been certified to comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of FCC rules.

Software copyrighted and licensed to

Calculated Industries, Inc. by

Construction Master Technologies, LLC, 2006.

Pocket Reference Guide copyrighted by

Construction Master® and Calculated Industries® are registered trademarks of Calculated Industries, Inc.