Calculated Industries Construction Master plus EZ 4067 Manual de usuario

ConstruCtion Master Plus eZ

The Construction Master Plus EZ (CMP EZ) is the newest in

Calculated Industries′ line of award-winning Construction Master

Plus construction-math calculators. The big difference between the

CMP EZ and the other models is that, in addition to many more built-in

calculations, the CMP EZ is a Prompting Calculator.

With a Prompting Calculator, you select a function and then scroll

through a series of prompts for quantities, measurements, placement,

materials and other possible inputs. After entering the inputs, you can

then scroll through all the available calculations and solutions. You

can also change an input (or multiple inputs) and then re-solve the

problem, instantly seeing how the new entry changes calculations

without having to re-enter the entire problem.

The Construction Master Plus EZ has Basic and Advanced solutions

(lengths, angles, quantities, etc.) for these construction calculations:

● Rafters

● Hip/Valley Rafters

● Jack Rafters

● Stairs

Other solutions include

● Square-Ups, Areas and Volumes

● Circular

● Arcs

● Rake Walls

● Arch Studs

● Balusters ─ Cap Wall and Open Wall

● Elliptical Arches

● Crown Molding

● Compound Angles

● Polygons

● Spacing

● Material Calculations for Blocks, Drywall, Fencing, Footings,

Pavers, Roong, Studs, Tile and Grout

TABLE OF CONTENTS

GETTING STARTED

.......................................................................................2

Key Denitions ..........................................................................................2

Basic Function Keys .............................................................................. 2

Dimensional Function Keys ................................................................... 2

Weight and Volume Function Keys .......................................................2

Miscellaneous Functions .......................................................................2

Construction and Prompting Keys ......................................................... 3

USING THE CONSTRUCTION MASTER PLUS EZ

......................................... 3

Default Values ...........................................................................................3

Functions — U.S. Mode ........................................................................3

Functions — Metric Mode .....................................................................3

Materials — U.S. Mode .........................................................................4

Materials — Metric Mode ......................................................................4

Extras — U.S. Mode ..............................................................................4

Square-Up and LxWxH Functions ............................................................. 4

Square-Up .............................................................................................4

Extras — Metric Mode ........................................................................... 4

LxWxH ...................................................................................................4

Rafter Function .......................................................................................... 5

Basic Rafters .........................................................................................5

Advanced Rafters ..................................................................................5

Hip/Valley Rafter Function ......................................................................... 5

Basic Hip/Valley Rafters ........................................................................ 5

Advanced Hip/Valley Rafters ................................................................. 6

Advanced Function with Common Pitch ................................................6

Advanced Function with Irregular Pitch ................................................. 6

Jack Rafter Function .................................................................................6

Basic Jack Rafters .................................................................................6

Jack Rafters – Advanced Function ........................................................ 7

Stair Function ............................................................................................ 7

Basic Stairs ...........................................................................................8

ConstruCtion Master Plus eZ

GettinG Started

KEY DEFINITIONS

Basic Function Keys

On/Clear Key – Turns on power. When not in a prompting

sequence, pressing once clears the last entry and what is

displayed. Pressing twice clears all non-permanent values.

Within a prompting input sequence, pressing once clears the

entry and leaves the prompt displayed. Pressing twice exits

the prompt function but does not clear non-permanent values.

A third press clears non-permanent values.

Within an output sequence, pressing once exits the prompt

function, but does not clear non-permanent values. Pressing

twice clears non-permanent values.

Off – Turns all power off. Clears all non-permanent memory.

+-x÷=

Arithmetic operation keys

0– 9and .

Keys used for entering numbers.

Convert – Used with the dimensional keys to convert

between units or with other keys to access special functions.

Recall – Used with other keys to recall stored values

and settings.

Memory Clear – Clears Accumulative Memory and

displays total.

Store – Used for storing values.

Accumulative Memory – Adds displayed value to

Accumulative Memory.

M- – Subtracts displayed value from Accumulative Memory.

Dimensional Function Keys

Yards – Identies entry as yards, with repeated presses

toggling between linear, area and volume units.

Feet – Identies entry as Feet, with repeated presses

toggling between linear, area and volume units. Also

used with

and

keys for entering Feet-Inch values.

Repeated presses during conversions toggle between

fractional Feet-Inch and decimal Feet.

Inch – Identies entry as Inches, with repeated presses

toggling between linear, area and volume units. Entry

can be whole or decimal numbers. Also used with

for

entering fractional inch values (e.g.,

6f9i1/2

Repeated presses during conversions toggle between

fractional and decimal inches.

Fraction Bar – 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. Results are

always shown in typical building fractional format.

Meters – Identies entry as meters, with repeated presses

toggling between linear, area and volume units. Converts

dimensional value to units of meters, with repeated presses

toggling between meters and millimeters.

Centimeters (cm) – Identies entry as centimeters, with

repeated presses toggling between linear, area and volume

units.

Millimeters (mm) – Identies entry as millimeters, with

repeated presses toggling between linear, area and

volume units.

Board Feet (Bd Ft) – Enters or converts cubic values to

Board Feet. One Board Foot is equal to 144 cubic inches.

Acre – Enters or converts a square value to Acres.

Weight and Volume Function Keys

Weight per Volume (wt/vol) – Stores a new weight volume

as tons per cubic yard or other format as shown below.

Default value is 1.5 tons per cubic yard.

● Tons per cubic yard

● Pounds per cubic yard

● Pounds per cubic feet

● Pounds per cubic inch

● Metric tons per cubic meter

● Kilograms per cubic meter

Pounds (lbs) – Enters or converts a weight or volume value

to pounds.

Metric Tons (met tons) – Enters or converts a weight or

volume value to metric tons.

Tons – Enters or converts a weight or volume value to tons.

Kilograms (kg) – Enters or converts a weight or volume

value to kilograms.

Miscellaneous Functions

Backspace Function – Used to delete entries one keystroke

at a time (unlike the

function, which deletes the entire

entry).

Percentage – Used to nd a given percentage of a number.

– Squares the value on the display.

Total Cost (Cost) – Calculates total cost based on entered or

stored Unit Cost.

CR0

Unit Cost – Stores the Unit Cost for calculating the total cost.

To recall this setting, press

. Default is 0.00

(no Unit Cost).

Degrees:Minutes:Seconds (dms◄►deg) – Converts

between D:M:S and decimal degree formats; repeated presses

will toggle between the two formats.

Square Root (

√¯

x) – Calculates the Square Root of the

number on the display.

C+

Pi – Displays value of

(3.1415927).

C-

Change Sign (+/–) – Toggle displayed value between

negative and positive value.

Clear All – Returns all stored values to the default settings.

Does not affect Preference Settings.

C÷

Reciprocal (1/x) – Finds the Reciprocal of a number

(e.g.,

8C÷ =

0.125).

Advanced Stairs ....................................................................................8

Circular Function ....................................................................................... 9

Rake Wall Function ...................................................................................9

Arc Function ............................................................................................ 10

Arch Stud Function .................................................................................. 10

Baluster Function .................................................................................... 11

Cap Wall .............................................................................................. 11

Open Wall ............................................................................................ 11

Materials Functions ................................................................................. 11

Blocks .................................................................................................. 11

Drywall .................................................................................................12

Fencing ................................................................................................12

Footings ...............................................................................................12

Pavers .................................................................................................13

Roong ................................................................................................ 13

Studs ...................................................................................................13

Tile .......................................................................................................14

Extras ...................................................................................................... 14

Preference Settings .............................................................................14

Elliptical Arch Function ........................................................................ 15

Crown Molding Function ......................................................................15

Compound Angle Function .................................................................. 16

Polygon Function .................................................................................16

Spacing Function .................................................................................16

ConstruCtion Master Plus eZ

Construction and Prompting Keys

Complete listings of required and optional entries and the resulting solutions are

in the Construction Examples section.

Square Up – Calculates the Square-Up (diagonal) length,

Area and Perimeter when Length and Width are entered.

LxWxH – Calculates Volume, Wall Surface Area, Wall +

Ceiling Area, Square-Up, Area and Perimeter when Length,

Width and Height are entered.

Rafter (Basic) – Calculates basic lengths and angles

for Rafters.

Rafter (Advanced) – Calculates basic lengths and angles for

Rafters.

Hip/Valley (Basic) – Calculates basic lengths and angles for

Regular and Irregular Hip/Valley rafters.

Hip/Valley (Advanced) – Calculates advanced lengths and

angles for Regular and Irregular Hip/Valley rafters.

Jack Rafter (Basic) – Calculates basic lengths and angles for

Regular and Irregular Jack rafters.

Jack Rafter (Advanced) – Calculates advanced lengths and

angles for Regular and Irregular Jack rafters.

Stair (Basic) – Calculates values for Stairs when Floor-to-

Floor Rise and/or Stair Run is entered.

Stair (Advanced) – Calculates values for Stairs, allowing

for Upper and Lower Flooring Thickness, Nosing Length and

Riser Thickness for additional calculations.

Circular – Calculates for Diameter, Radius, Perimeter or Area

when one of these values is entered. Enter Height and one of

the other four values to calculate Cones and Columns.

Rake Wall – Calculates various stud lengths for Rake Walls

with or without bases.

Arc – Calculates values for Chord Length, Arc Height, Radius,

Arc Length/Angle, and Arc Segment Area.

Arch Stud – Calculates Arch Stud lengths for Arched Walls.

Baluster – Calculates for Cap Wall Balusters, where all

baluster lengths are the same.

Open Baluster – Calculates for Open Wall Balusters, which

have different-length balusters on a tread.

Materials – Accesses functions for Blocks, Drywall, Fencing,

Footings, Pavers, Roong, Studs and Tile.

Extras – Accesses functions for Elliptical Arches, Crown

Molding, Compound Angles, Polygons and Spacing. Also

used to access Preferences for customizable settings (see

Preference Settings on page 17).

Up Arrow – Used to scroll up (or back) through prompts and

entries.

Down Arrow – Used to scroll down (or forward) through

prompts and entries.

Enter – Used to enter or accept values.

Solve – Used to skip the remaining entry prompts and proceed

to the rst available solution for the chosen function.

USinG the

ConStrUCtion MaSter PlUS eZ

The Construction Master Plus EZ is a Prompting Calculator. To use it

you simply select a function and then scroll through a series of prompts for

quantities, measurements, placement, materials and other possible inputs.

After entering the inputs, you can then scroll through all the available

calculations and solutions. You can also change an input (or multiple

inputs) and then re-solve the problem, instantly seeing how the new entry

changes calculations without having to re-enter the entire problem.

You can also use the Ce (Solve) function to skip any remaining

input prompts and go directly to the solution.

AUTO SHUT-OFF AND AUTO SHUTDOWN

The LCD display on your calculator is designed to shut off after 4 minutes

of non-use. If the display powers off, just press the O key to power it

back on. All values are maintained. Your most recent entry will be displayed

and you can scroll through or continue to enter values for the same

calculation you were working on before the display shut off. After 4 hours

of non-use, the calculator will shut down and all temporary settings and

values are cleared.

U.S. AND METRIC MODES

The Construction Master Plus EZ can be used in either U.S. Mode (the

calculator’s default setting), which uses inches, or Metric Mode, which uses

millimeters, as a basis for entries and calculations. To change the Mode,

go to Preferences, using the Extras function (CN).

DEFAULT VALUES

The table below shows the calculator’s U.S. and Metric Default Values.

Default Values can be changed by entering a new value. The new Default

Value will remain until you change it or reset it to zero. An All Clear

(Cx) will reset values to the calculator’s Default Values.

Roong calculations are based on 4' x 8' Sheathing Size.

Functions — U.S. Mode

Common Rafter

• Ridge Thickness 1-1/2"

• Rafter Width 7-1/4"

• Plate Width 3-1/2"

Jack Rafter

• O.C. Spacing 16"

• Rafter Thickness 1-1/2"

• Hip/V Thickness 1-1/2"

• Ridge Thickness 1-1/2"

Rake Wall

• O.C. Spacing 16"

• Top Plate Thickness 1-1/2"

Baluster/Open Baluster

• Maximum Spacing 4"

Hip/ Valley

• Ridge Thickness 1-1/2"

Stairs

• Target Riser Height 7-1/2"

• Target Tread Width 10"

• Top Floor Thickness 10"

• Headroom Height 80"

Arch Studs

• O.C. Spacing 16"

• Location: 1 = Outside

Functions — Metric Mode

Common Rafter

• Ridge Thickness 38 mm

• Rafter Width 200 mm

• Plate Width 1 0 0 m m

Jack Rafter

• O.C. Spacing 400 mm

• Rafter Thickness 38 mm

• Hip/V Thickness 38 mm

• Ridge Thickness 38 mm

Rake Wall

• O.C. Spacing 400 mm

• Top Plate Thickness 38 mm

Baluster/Open Baluster

• Maximum Spacing 100 mm

Hip/ Valley

• Ridge Thickness 38 mm

Stairs

• Target Riser Height 190 mm

• Target Tread Width 250 mm

• Top Floor Thickness 250 mm

• Headroom Height 2 1 0 0 m m

Arch Studs

• O.C. Spacing 400 mm

• Location: 1 = Outside

ConstruCtion Master Plus eZ

Materials — U.S. Mode

Blocks

• Block Height 8″

• Block Length 16″

• Waste Factor 5%

Drywall Sheets

• Include Ceiling: 1 = Yes

• Sheet Length 8′

• Sheet Width 4′

• Waste Factor 5%

Fencing

• Number of Rails 2

• Maximum Post Spacing 96″

• Post Width 3-1/2′

Footings

• Footing Area 264 Sq Inches

• Waste Factor 5%

Pavers

• Paver Length 8"

• Paver Width 4"

• Waste Factor 5%

Roong

• Waste Factor 5%

• Number of Nails

per Shingle 4

• Length of Nail 1-1/4″

• Number of Pieces

per Bundle 21

• Number of Bundles

per Square 3

Drywall Sheets

• Include Ceiling: 1 = Yes

• Sheet Length 8′

• Sheet Width 4′

• Waste Factor 5%

Studs

• O.C. Spacing 16″

• Waste Factor 5%

Tile

• Grout Width 1/8″

• Tile Thickness 1/4″

• Waste Factor 5%

• Backer Board Size 3′ x 4′

Materials — Metric Mode

Blocks

• Block Height 215 mm

• Block Length 440 mm

• Waste Factor 5%

Drywall Sheets

• Include Ceiling: 1 = Yes

• Sheet Length 2400 mm

• Sheet Width 1200 mm

• Waste Factor 5%

Fencing

• Number of Rails 2

•

Maximum

Post

Spacing 2.4 m

• Post Width 69 mm

Footings

• Footing Area 0.2 sq m

• Waste Factor 5%

Pavers

• Paver Length 215 mm

• Paver Length 102.5 mm

• Waste Factor 5%

Roong

• Sheathing Size 1200 mm x

2400 mm

• Number of Nails per

Shingle 4

• Length of Nail 30 mm

• Number of Pieces

per Bundle 21

• Number of Bundles

per Square 3

• Waste Factor 5%

Studs

• O.C. Spacing 400 mm

• Waste Factor 5%

Tile

• Grout Width 2 mm

• Tile Thickness 7 mm

• Waste Factor 5%

• Backer Board Size 1200 mm

Extras — U.S. Mode Extras — Metric Mode

Elliptical Arch

• O.C. Spacing 16″

• Position 1 = Outside

Crown Molding

• Corner Angle 90°

• Spring Angle 45°

Spacing

• Object Width 1 - 1 / 2 ″

• End Position 1 = Beginning

• Mark Position 2 = On-Center

Elliptical Arch

• O.C. Spacing 400 mm

• Position 1 = Outside

Crown Molding

• Corner Angle 90°

• Spring Angle 45°

Spacing

• Object Width 38 mm

• End Position 1 = Beginning

• Mark Position 2 = On-Center

CONSTRUCTION EXAMPLES

For each of the functions shown in the User’s Guide there is a box showing

all of the required entries, optional entries and possible solutions for

that function. You can also quickly see the prompts for entries and possible

solutions for each function on the calculator by accessing the function and

then scrolling through the prompts and solutions, with repeated presses of

the e key, the ^ key or the v key.

Note: After scrolling through all your entries and solutions, the calculator

will display REPEAT briey before returning to the rst input prompt. You

can then scroll through and view (or change) entries and solutions. It’s

recommended that you allow the REPEAT message to disappear before

continuing to scroll through the function. Not doing so will skip the rst

input prompt.

SQUARE-UP AND LxWxH FUNCTIONS

Square-Up

Required Entries Solutions

Length

Width

Square-Up

Area

Perimeter

Enter a 15′ 8" Length and a 12′ 6" Width:

1. Clear Calculator:

OOO

2. Start Square-Up function:

3. Enter 15′ 8" Length:

15f8ie

4. Enter 12′ 6" Width and solve for Square-Up:

12f6ie

SQUARE-UP 20 FEET 0-1/2 INCH

AREA 195.83333 SQ FEET

PERIMETER 56 FEET 4 INCH

LxWxH

Entries Solutions

Length

Width

Height

Volume

Vertical Surface Area

Vertical + LxW Surface Area

Square-Up

LxW Area

Perimeter

Enter a 15′ 8" Length, 12′ 6" Width and 4" Height:

1. Clear Calculator:

OOO

2. Start Length x Width x Height function:

3. Enter 15′ 8" Length:

15f8ie

4. Enter 12′ 6" Width:

12f6ie

5. Enter 4" Height and solve for L x W x H:

4ie

VOLUME 65.277778 CU FEET

VERTICAL SURFACE AREA 18.777778 SQ FEET

VERTICAL + LxW AREA 214.61111 SQ FEET

SQUARE-UP 20 FEET 0-1/2 INCH

LxW AREA 195.83333 SQ FEET

PERIMETER 56 FEET 4 INCH

ConstruCtion Master Plus eZ

RAFTER FUNCTION

Basic Rafters

Required Entries Possible Solutions

Two of these required:

• Pitch

• Run (or Span)

• Rise

• Common Rafter Length

Common Rafter Length

Level Angle

Pitch

Plumb Angle

Run

Rise

Solve for Basic Rafters using an 8" Pitch and 12' Run:

1. Clear Calculator:

OOO

2. Start Rafter function:

3. Enter 8" Pitch:

8ie

4. Enter 12′ Run and solve for Basic Rafters:

12fe

DIAGONAL 14 FEET 5-1/16 INCH

PLUMB ANGLE 33.69 °

LEVEL ANGLE 56.31 °

RISE 8 FEET 0 INCH

Advanced Rafters

Required Entries Possible Solutions

Two of these required:

• Pitch

• Run (or Span)

• Rise

• Common Rafter Length

Common Rafter Length

Common Tail Length**

Total Rafter Length**

Plumb Angle

Level Angle

Seat Cut

Standard 2/3 HAP

Full Bearing HAP

Pitch

Run

Rise

Optional Entries

Horizontal Overhang

Total Fascia Thickness

Ridge Thickness

• Default value: 1-1/2"

Rafter Width

• Default value: 7-1/4"

Top Plate Width

• Default value: 3-1/2"

HAP*

* Height Above Plate. If a Top Plate value is shown when you want to enter a HAP, clear

the Top Plate value by pressing either

. Then, press

to move to the

HAP entry prompt and enter the desired value.

**Tail Length and Total Rafter Length shown only when Horizontal Overhang is entered.

Enter an 8" Pitch, a 12′ Run, an 18" Overhang and 2-1/4" Total

Fascia Thickness:

1. Clear Calculator:

2. Start Advanced Rafter function:

3. Enter 8" Pitch:

8ie

4. Enter 12′ Run:

12fe

5. Enter 18" Overhang:

18ie

6. Enter 2-1/4" Total Fascia Thickness:

2i1/4e

7. Accept 1-1/2" default value for Ridge Thickness:

8. Accept 7-1/4" default value for Rafter Width:

9. Accept 3-1/2" default value for Top Plate Width and solve for Rafters:

COMMON RAFTER LNTH 14 FEET 4-3/16 INCH

TAIL LENGTH 19-3/8 INCH

TOTAL RAFTER LNTH 15 FEET 11- 9/16 INCH

PLUMB ANGLE 33.69°

LEVEL ANGLE 56.31°

STANDARD 2/3 HAP 5- 13/16 INCH

FULL BEARING HAP 6-3/8 INCH

RISE 8 FEET 0 INCH

HIP/VALLEY RAFTER FUNCTION

Basic Hip/Valley Rafters

Required Entries Possible Solutions

Two of the rst three required:

•

Common Pitch

•

Run (or Span)

•

Rise

Hip/Valley Length

Plumb Angle

Level Angle

Common Cheek Angle

Irregular Cheek Angle

Optional Entries

Irregular Pitch

Find the Hip/Valley Rafter Lengths and Angles using an 8" Common Pitch and

a 12′ Run:

1. Clear Calculator:

OOO

2. Start Basic Hip/Valley function:

3. Enter 8" Common Pitch:

8ie

4. Enter 12′ Run:

12fe

5. No entry for Irregular Pitch (Common Pitch used). Solve for

Hip/Valley values:

HIP/VALLEY LNTH 18 FEET 9-1/8 INCH

PLUMB ANGLE 25.24°

LEVEL ANGLE 64.76°

COMMON CHEEK ANGL 45.00°

Find the Hip/Valley Rafter Lengths and Angles using an 8" Common Pitch, an 8′

Run and an Irregular Pitch of 10":

1. Clear Calculator:

OOO

2. Start Basic Hip/Valley function:

3. Enter 8" Common Pitch:

8ie

4. Enter 8′ Run:

8fe

5. Enter 10" Irregular Pitch and solve for Hip/Valley values:

10ie

HIP/VALLEY LNTH 11 FEET 6-5/8 INCH

PLUMB ANGLE 27.50°

LEVEL ANGLE 62.50°

ConstruCtion Master Plus eZ

COMMON CHEEK ANGL 38.66°

IRREGULAR CHEEK ANGL 51.34°

Advanced Hip/Valley Rafters

Required Entries Possible Solutions

Two of the rst three required:

•

Common Pitch

•

Run (or Span)

•

Rise

Total Hip/Valley Length

Hip/Valley Tail Length*

Plumb Angle

Level Angle

Common and Irregular

• Cheek Angle

• Backing Angle

• Sheathing Angle

• Plan Angle

Optional Entries

Irregular Pitch

Horizontal Overhang

Total Fascia Thickness

Ridge Thickness

• Default value: 1-1/2"

* Tail Length shown only when Horizontal Overhang is entered.

Advanced Function with Common Pitch

Find Hip/Valley Lengths and Angles using an 8" Common Pitch, a 12′ Run, an

18" Horizontal Overhang and 2-1/4" Total Fascia Thickness:

1. Clear Calculator:

OOO

2. Start Advanced Hip/Valley function:

3. Enter 8" Common Pitch:

8ie

4. Enter 12′ Run:

12fe

5. No Irregular Pitch (Common Pitch used):

6. Enter 18" Overhang*:

18ie

7. Enter 2-1/4" Total Fascia Thickness*:

2i1/4e

8. Accept 1-1/2" default value for Ridge Thickness* and solve for Hip/Valley:

TOTAL HIP/VALLEY LNTH 20 FEET 9-7/8 INCH

H/V RAFTER TAIL LNTH 25-7/8 INCH

PLUMB ANGLE 25.24°

LEVEL ANGLE 64.76°

COMMON CHEEK ANGLE 45.00°

COMMON BACKING ANGL 23.09°

COMMON SHEATHING ANGL 50.24°

COMMON PLAN ANGL 45.00°

* If the desired value is already displayed, there′s no need to re-enter it. Just press

to accept it. The value you store will remain unchanged until you modify it or reset the

calculator.

Optional Entries only: If you don′t want to include an optional entry in your calculation,

simply clear it by entering

Advanced Function with Irregular Pitch

Find Hip/Valley Lengths and Angles using an 8 " Common Pitch, a 12′ Run, a

10" Irregular Pitch, an 18" Overhang and 2-1/4" Total Fascia Thickness:

1. Clear Calculator:

OOO

2. Start Advanced Hip/Valley function:

3. Enter 8" Common Pitch:

8ie

4. Enter 12′ Run:

12fe

5. Enter 10" Irregular Pitch:

10ie

6. Enter 18" Overhang*:

18ie

7. Enter 2-1/4" Total Fascia Thickness*:

2i1/4e

8. Accept 1-1/2" Ridge Thickness* and solve for Hip/Valley:

TOTAL HIP/VALLEY LNTH 19 FEET 2– 9/16 INCH

H/V RAFTER TAIL LNTH 23-3/4 INCH

PLUMB ANGLE 27.50°

LEVEL ANGLE 62.50°

COMMON CHEEK ANGL 38.66°

IRREGULAR CHEEK ANGL 51.34°

COMMON BACKING ANGL 20.27°

IRREG BACKING ANGL 29.99°

COMMON SHEATHING ANGL 56.35°

IRREG SHEATHING ANGL 46.16°

COMMON PLAN ANGL 51.34°

IRREGULAR PLAN ANGL 38.66°

* If the desired value is already displayed, there′s no need to re-enter it. Just press

to accept it. The value you store will remain unchanged until you modify it or

reset the calculator.

Optional Entries only: If you don′t want to include an optional entry in your calculation,

simply clear it by entering

JACK RAFTER FUNCTION

Basic Jack Rafters

Required Entries Possible Solutions

Two of the rst three required:

• Common Pitch

• Run (or Span)

• Rise

On-Center Spacing

• Default value: 16"

Common and Irregular

• Jack On-center Spacing*

• Offset Length

• Rafter Length

• Jack Rafter Lengths

• Plumb Angle

• Level Angle

• Cheek Angle

Optional Entries

Irregular Pitch

*On-Center Spacing is also a possible solution that displays when both of the following

are true: 1) Common and Irregular Pitches are not equal and 2) Jack Alignment

Preference is set to MATE, rather than ON-CENTER.

Find the Jack Rafter Lengths and Angles using an 8" Common Pitch and a

6′ Run:

1. Clear Calculator:

OOO

2. Start Jack Rafter function:

3. Enter 8" Common Pitch:

8ie

4. Enter 6′ Run:

6fe

5. No entry for Irregular Pitch (Common Pitch used):

6. Accept default On-Center Spacing (16") and solve for Jack Rafters:

COMMON OFFSET LNTH 19-1/4 INCH

COMMON RAFTER LNTH 7 FEET 2-9/16 INCH

ConstruCtion Master Plus eZ

JACK RAFTER C-Ø1 5 FEET 7-5/16 INCH

JACK RAFTER C-Ø2 4 FEET 0-1/16 INCH

JACK RAFTER C-Ø3 2 FEET 4-7/8 INCH

JACK RAFTER C-Ø4 0 FEET 9-5/8 INCH

COMMON PLUMB ANGL 33.69°

COMMON LEVEL ANGL 56.31°

COMMON CHEEK ANGL 45.00°

Find the Jack Rafter Lengths and Angles using a 6′ Run, a 4′ Rise and a 10″

Irregular Pitch:

1. Clear Calculator:

OOO

2. Start Jack Rafter function:

3. No Common Pitch:

4. Enter 6′ Run:

6fe

5. Enter 4′ Rise:

4fe

6. Enter 10" Irregular Pitch:

10ie

7. Accept default On-Center Spacing (16") and solve for Jack Rafters:

COMMON OFFSET LNTH 24-1/16 INCH

COMMON RAFTER LNTH 7 FEET 2-9/16 INCH

JACK RAFTER C-Ø1 5 FEET 2-1/2 INCH

JACK RAFTER C-Ø2 3 FEET 2-7/16 INCH

JACK RAFTER C-Ø3 1 FEET 2-7/16 INCH

COMMON PLUMB ANGL 33.69°

COMMON LEVEL ANGL 56.31°

COMMON CHEEK ANGL 51.34°

IRREGULAR OFFSET LNTH 16- 11/16 INCH

IRREGULAR RAFTER LNTH 6 FEET 3 INCH

IR JACK RAFTER I-Ø1 4 FEET 10-5/16 INCH

IR JACK RAFTER I-Ø2 3 FEET 5-5/8 INCH

IR JACK RAFTER I-Ø3 2 FEET 1 INCH

IR JACK RAFTER I-Ø4 0 FEET 8-5/16 INCH

IRREGULAR PLUMB ANGL 39.81°

IRREGULAR LEVEL ANGL 50.19°

IRREGULAR CHEEK ANGL 38.66 °

Jack Rafters – Advanced Function

Required Entries Possible Solutions

Two of the rst three required:

• Pitch

• Run (or Span)

• Rise

On-C enter Spacing*

• Default value: 16"

Common and Irregular

• Jack On-center Spacing*

• Offset Length

• Rafter Length

• Jack Rafter Lengths

• Plumb Angle

• Level Angle

• Cheek Angle

Optional Entries

Irregular Pitch

Horizontal Overhang

Total Fascia Thickness

Common Rafter Thickness**

Hip/Valley Thickness**

Ridge Thickness**

* Default value: 1-1/2"

** On-center Spacing is also a possible solution that displays when both of the following

are true: 1) Common and Irregular Pitches are not equal and 2) Jack Alignment

Preference is set to MATE, rather than ON-CENTER.

** Tail Lengths shown only when Horizontal Overhang is entered.

Find the Jack Rafter Lengths and Angles using an 8" Pitch, a 6′ Run, an 18"

Horizontal Overhang and the default values shown above:

1. Clear Calculator:

2. Start Advanced Jack Rafter function:

3. Enter 8" Common Pitch:

8ie

4. Enter 6′ Run:

6fe

5. No Irregular Pitch (Common Pitch used):

6. Accept default On-Center Spacing (16"):

7. Enter 18" Overhang Run:

18ie

8. No Total Fascia Thickness:

(Enter 0 if a value is displayed)

9. Accept 1-1/2" default Rafter Thickness:

10. Accept 1-1/2" default Hip/Valley Thickness:

11. Accept 1-1/2" default Ridge Thickness and solve for Jack Rafters:

COMMON OFFSET LNTH 19-1/4 INCH 19-1/4 INCH

COMMON TAIL LNTH 21-5/8 INCH

COMMON RAFTER LNTH 8 FEET 11-1/4 INCH

JACK RAFTER C-Ø1 7 FEET 4-1/16 INCH

JACK RAFTER C-Ø2 5 FEET 8-13/16 INCH

JACK RAFTER C-Ø3 4 FEET 1-9/16 INCH

JACK RAFTER C-Ø4 2 FEET 6-3/8 INCH

JACK RAFTER C-Ø5 0 FEET 11-1/8 INCH

COMMON PLUMB ANGL 33.69°

COMMON LEVEL ANGL 56.31°

COMMON CHEEK ANGL 45.00°

STAIR FUNCTION

Note: Within Preferences, there is a setting for Riser Height that

determines which type of calculation will be used. The default is Target

Riser Height.

• Target Riser Height: Use this setting to get a stair calculation that will get as

close to the stored Riser Height as possible. The calculated Actual Riser Height

will either be shorter or taller than the Target Riser Height.

• Maximum Riser Height: This is used when local building codes prohibit risers

greater than this value. The calculated Actual Riser Height will not exceed the

Maximum Riser Height.

ConstruCtion Master Plus eZ

Basic Stairs

Required Entries Possible Solutions

One of these two required:

• Floor-to-Floor Rise

• Stair Run

Target/Max Riser Height

• Default value: 7-1/2"

Target Tread Width

• Default value: 10"

Top Floor Thickness

• Default value: 10"

Headroom Height

• Default value: 80"

Number of Risers

Actual Riser Height*

Resulting Riser Offset

Number of Treads

Actual Tread Width*

Resulting Tread Offset

Minimum Stairwell Opening

Stringer Length

Inclination Angle**

Stair Run

Stair Rise

Optional Entries

None

* A warning sign appears on the display when the calculated Tread Width is

less than the stored Tread Width or when the calculated Riser Height exceeds

the stored Riser Height.

** A warning sign appears if the actual Inclination Angle is 10% greater than

the Target Riser/Tread ratio.

With Preference Setting set to Target Riser Height, use default values and

solve for Basic Stairs with a 9′ 11" Floor-to-Floor Rise:

1. Clear Calculator:

OOO

2. Start Basic Stair function:

3. Enter 9′ 11″ Floor-to-Floor Rise:

9f11ie

4. Accept default 7-1/2" Target Riser Height:

5. No Stair Run:

6. Accept default 10" Target Tread Width:

7. Accept default 10" Top Floor Thickness:

8. Accept default 80" Headroom Height and solve for Basic Stairs:

NUMBER OF RISERS 16.

ACTUAL RISER HGHT. 7-7/16 INCH

RISER OFFSET +/- 0 INCH

NUMBER OF TREADS 15.

ACTUAL TREAD WDTH 10 INCH

TREAD OFFSET +/- 0 INCH

MIN STAIRWELL OPEN 10 FEET 1 INCH

STRINGER LENGTH 15 FEET 6-15/16 INCH

INCLINE ANGLE 36.64°

STAIR RUN 12 FEET 6 INCH

Change Preference Setting to Maximum Riser Height and solve for Basic

Stairs with a 10′ 1" Floor-to-Floor Rise and a Stair Run of 15′ 5":

1. Clear Calculator:

OOO

2. Start Basic Stair function:

3. Enter 10′ 1" Floor-to-Floor Rise:

10f1ie

4. Accept default 7-1/2" Max Riser Height:

5. Enter 15′ 5" Stair Run:

15f5ie

6. Accept default 10" Top Floor Thickness:

7. Accept default 80" Headroom Height and solve for Basic Stairs:

NUMBER OF RISERS 17.

ACTUAL RISER HGHT. 7-1/8 INCH

RISER OFFSET +/- 0-1/8 INCH

NUMBER OF TREADS 16.

ACTUAL TREAD WDTH 11-9/16 INCH

TREAD OFFSET +/- 0 INCH

MIN STAIRWELL OPEN 12 FEET 2-1/16 INCH

STRINGER LENGTH 18 FEET 1-5/16 INCH

INCLINE ANGLE 31.64°

Advanced Stairs

See Diagrams on page 23 ►

Required Entries Possible Solutions

One of these two required:

• Floor-to-Floor Rise

• Stair Run

Target/Max Riser Height

• Default value: 7-1/2"

Target Tread Width

• Default value: 10"

Top Floor Thickness

• Default value: 10"

Headroom Height

• Default value: 80"

Net Floor-to-Floor Height

Number of Risers

Actual Riser Height*

Number of Treads

Actual Tread Width*

Minimum Stairwell Opening

Stringer Length

Inclination Angle**

Rough Stair Run

Finished Stair Run***

Toe Positions

Optional Entries

Upper Flooring Thickness

Lower Flooring Thickness

Nosing Length

Riser Thickness

* A warning sign appears on the display when the calculated Tread Width

is less than the stored Tread Width

or when the calculated Riser Height

exceeds the stored Riser Height

** A warning sign appears if the actual Inclination Angle is 10% greater than

the Target Riser/Tread ratio.

*** Finished Stair Run value is shown only if Nosing Length or Riser Thickness

is entered.

With Preference Setting set to Target Riser Height, use default values and

solve for Advanced Stairs with a 9′ 11" Floor-to-Floor Rise, 3/4" Upper

Flooring Thickness, 1-1/4" Lower Flooring Thickness, Nosing Length of 1/2"

and Riser Thickness of 3/4":

1. Clear Calculator:

OOO

2. Start Advanced Stair function:

3. Enter 9′ 11" Floor-to-Floor Rise:

9f11ie

4. Accept default 7-1/2" Target Riser Height:

5. No Stair Run:

6. Accept default 10" Target Tread Width

7. Accept default 10" Top Floor Thickness:

ConstruCtion Master Plus eZ

8. Accept default 80" Headroom Height:

9. Enter 3/4" Upper Flooring Thickness:

3/4ie

10. Enter 1-1/4" Lower Flooring Thickness:

1i1/4e

11. Enter 1/2" Nosing Length:

1/2e

12. Enter 3/4" Riser Thickness and solve for Advanced Stairs:

3/4e

NET FLOOR-TO-FLOOR RISE 9 FEET 10-1/2 INCH

NUMBER OF RISERS 16.

ACTUAL RISER HGHT 7-7/16 INCH

NUMBER OF

TREADS 15.

ACTUAL TREAD WDTH 10 INCH

MIN STAIRWELL OPEN 10 FEET 3-3/16 INCH

STRINGER LENGTH 16 FEET 7-1/8 INCH

INCLINE ANGLE 36.52°

ROUGH STAIR RUN 12 FEET 6 INCH

FINISHED STAIR RUN 12 FEET 7-1/4 INCH

TOE POSITION 01 1 FEET 0-7/16 INCH

Continued presses of

will show all Toe Positions.

TOE POSITION LAST 16 FEET 7-1/8 INCH

Example using Solve function:

Using default values (including 7-1/2" Target Riser Height), solve for

Advanced Stairs with a 10' 1" Floor-to-Floor Rise and a Stair Run of 15' 5":

1. Clear Calculator:

OOO

2. Start Advanced Stair function:

3. Enter 10′ 1" Floor-to-Floor Rise:

10f1ie

4. Accept default 7-1/2" Target Riser Height:

5. Enter 15′ 5" Stair Run and solve for Advanced Stairs:

15f5iCe

NET FLOOR-TO-FLOOR RISE 10 FEET 1 INCH

NUMBER OF RISERS 16.

*ACTUAL RISER HGHT 7-9/16 INCH

NUMBER OF TREADS 15.

ACTUAL TREAD WDTH 12-5/16 INCH

MIN STAIRWELL OPEN 12 FEET 2-3/4 INCH

STRINGER LENGTH 19 FEET 3-1/2 INCH

INCLINE ANGLE 31.52°

ROUGH STAIR RUN 15 FEET 5 INCH

TOE POSITION 01 1 FEET 2-7/16 INCH

Continued presses of

will show all Toe Positions.

TOE POSITION LAST 19 FEET 3-1/2 INCH

*The in the display indicates the Actual Riser Height exceeds the stored

Target Riser Height (Default value: 7-1/2").

CIRCULAR FUNCTION

Required Entries Possible Solutions

Enter one of these:

• Diameter

• Radius

• Perimeter

• Area

Column Volume

Column Surface Area

Cone Volume

Cone Surface Area

Optional Entries

Height

If one value is known – Diameter, Radius, Perimeter or Area – the other

three are calculated and stored. Height is required for Cone and Column

calculations.

The Diameter of a circle is 15 Feet 8 Inches. Find the Radius, Perimeter

and Area:

1. Clear Calculator:

OOO

2. Start Circular function:

3. Enter 15′ 8" Diameter and solve for Circular values:

15f8ie

ENTER RADIUS 7 FEET 10 INCH

ENTER PERIMETER 49 FEET 2–5/8 INCH

ENTER CIRCULAR AREA 192.77162 SQ FEET

To solve for Cones and Columns, enter the Height and one other input.

Find Circular, Cone and Column dimensions using a 15′ 8" Diameter

and a 10′ Height:

1. Clear Calculator:

OOO

2. Start Circular function:

3. Enter 15′ 8" Diameter:

15f8ie

4. Accept calculated Radius, Perimeter and Area:

eee

5. Enter 10′ Height, solve and scroll through all values:

10fe

COLUMN VOLUME 1927.7162 CU YDS

COLUMN SURFACE AREA 492.18285 SQ FEET

CONE VOLUME 642.57205 CU YDS

CONE SURFACE AREA 312.605 SQ FEET

RAKE WALL FUNCTION

See Diagrams on page 22 ►

Required Entries Possible Solutions

Two of the rst three required:

•

Pitch

•

Run

•

Rise

On-Center Spacing

• Default value:16"

Top Plate Length

Differential Length

Inclination (End) Angle

Various Rake Wall Stud Sizes

Optional Entries

Base Height

Top Plate Thickness

• Default value: 1-1/2"

Find the Stud lengths for a Rake Wall with an 8" Pitch and 6' Foot Run using

the default 16" Inch On-Center spacing and 1-1/2" Top Plate Thickness:

1. Clear Calculator:

OOO

ConstruCtion Master Plus eZ

2. Start Rake Wall function:

3. Enter Pitch:

8ie

4. Enter Run:

6fe

5. No Base Height:

6. Accept 16″ On-Center Spacing default value:

7. Accept 1-1/2″ Top Plate Thickness default value and solve for Rake Wall:

TOP PLATE LENGTH 7 FEET 2-9/16 INCH

DIFFERENTIAL LNTH 10–11/16 INCH

INCLINATION ANGL 33.69 °

RAKE WALL STUD Ø1 3 FEET 10–3/16 INCH

RAKE WALL STUD Ø2 2 FEET 11–1/2 INCH

RAKE WALL STUD Ø3 2 FEET 0–7/8 INCH

RAKE WALL STUD Ø4 1 FEET 2–3/16 INCH

RAKE WALL STUD Ø5 0 FEET 3–1/2 INCH

ARC FUNCTION

Required Entries Solutions

Enter two of these:

• Chord Length

• Arc Height

• Radius

• Arc Length or Arc Angle

Radius

Arc Angle

Arc Length

Chord Length

Arc Height

Arc Segment Area

* Arc solutions cannot be solved for the following cases:

• Entered Chord Length and Arc Length

• Entered Arc Height and Arc Length

The Radius of an Arc is 3′ 6" and the Length of the Arc is 7′. Find the

unknown values:

1. Clear Calculator:

OOO

2. Start Arc function:

3. Press Enter until prompt for Radius displays, then enter 3′ 6" Radius:

ee3f6ie

4. Enter 7′ Arc Length and solve for Arc values:

7fe

ARC ANGLE 114.59°

CHORD LENGTH 5 FEET 10–11/16 INCH

ARC HEIGHT 1 FEET 7–5/16 INCH

ARC SEGMENT AREA 6.6805533 SQ FEET

The Height of an Arc is 4′ 6" and the Arc Angle is 145°. Find the

unknown values:

1. Clear Calculator:

OOO

2. Start Arc function:

3. Press Enter until prompt for Arc Height displays, then enter 4′ 6" Arc Height:

e4f6ie

4. Press Enter until prompt for Arc Angle displays, enter 145° Arc Angle and

solve for Arc values:

e145e

RADIUS 6 FEET 5–1/4 INCH

ARC LENGTH 16 FEET 3–7/16 INCH

CHORD LENGTH 12 FEET 3–5/16 INCH

ARC SEGMENT AREA 40.522806 SQ FEET

ARCH STUD FUNCTION

See Diagrams on page 21 ►

Required Entries Possible Solutions

Enter two of these:*

• Chord Length

• Arc Height

• Radius

• Arc Length or Angle

Stud On-Center Spacing

• Default value: 16"

Stud Location**

• Default setting: Outside the Arch

Center Stud Length

Other Stud Lengths

Optional Entries

Base Height

*Arc solutions cannot be solved for the following cases:

• Chord Length and Arc Length

• Entered Arc Height and Arc Length

**Stud Position or Location refers to the placement of the studs:

• Entering 1 calculates studs located Outside of the Arch, enter 2

• Entering 2 calculates studs located Inside of the Arch

Solve for Arch Studs for an arched window with a Chord Length of 8' 1" and

Arc Height of 2' 10-1/2" and a Base Height of 2':

1. Clear Calculator:

OOO

2. Start Arch Stud function:

3. Enter 8' 1" Chord Length:

8f1ie

4. Enter 2' 10-1/2" Arc Height:

2f10i1/2e

5. Accept default On-Center Spacing (16"):

6. Enter 2' Base Height:

2fe

7. Accept Stud Location (1 = Outside) and solve for Arch Studs:

ARCH CENTER STUD LNTH 2 FEET 0 INCH

STUD PAIR LENGTH Ø1 2 FEET 2–9/16 INCH

STUD PAIR LENGTH Ø2 2 FEET 11–3/16 INCH

STUD PAIR LENGTH Ø3 4 FEET 9–1/8 INCH

STUD PAIR LENGTH Ø4 4 FEET 10–1/2 INCH

Solve for Arch Studs for an arched window with a Chord Length of 8' 1" and

Arc Height of 2' 10-1/2":

1. Clear Calculator:

OOO

2. Start Arch Stud function:

3. Enter 8' 1" Chord Length:

8f1ie

4. Enter 2' 10-1/2" Arc Height:

2f10i1/2e

5. Accept default On-Center Spacing (16"):

6. No Base Height:

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