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

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2 The Construction Master Plus EZ (CMP EZ) is the newest in Calculated Industries line of award-winning Construction Master 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.

3 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 & Open Wall Elliptical Arches Crown Molding Compound Angles Polygons Spacing Material Calculations for Blocks, Drywall, Fencing, Footings, Pavers, Roofing, Studs, Tile and Grout 1

4 2 Table of Contents Key Definitions... 3 Basic Function Keys... 3 Construction Prompting Keys Using the Construction Master Plus EZ Auto Shut-Off and Auto Shutdown U.S. and Metric Modes Default Values Construction Examples Materials Examples Extras Preference Settings Extras Example Battery Reset... 49

5 Key Definitions Basic Function Keys O 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. o Off Turns all power off. Clears all non-permanent memory. 3

6 4 +-x = Arithmetic operation keys 0 9 and. Keys used for entering numbers. C Convert Used with the dimensional keys to convert between units or with other keys to access special functions. R Recall Used with other keys to recall stored values and settings. RR Memory Clear Clears Accumulative Memory and displays total. CR Store Used for storing values. M Accumulative Memory Adds displayed value to Accumulative Memory. CM M- Subtracts displayed value from Accumulative Memory.

7 Dimensional Function Keys y Yards Identifies entry as yards, with repeated presses toggling between linear, area and volume units. f Feet Identifies entry as Feet, with repeated presses toggling between linear, area and volume units. Also used with i and / keys for entering Feet-Inch values. Repeated presses during conversions toggle between Feet-Inch-Fractions and Decimal Feet. i Inch Identifies 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., 9i1/2). Repeated presses during conversions toggle between fractional and decimal inches. 5

8 6 / 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. m Meters Identifies 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. C7 Centimeters (cm) Identifies entry as centimeters, with repeated presses toggling between linear, area and volume units. C9 Millimeters (mm) Identifies entry as millimeters, with repeated presses toggling between linear, area and volume units.

9 C8 C2 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 C5 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 C4 Pounds (lbs) Enters or converts a weight or volume value to pounds. C3 Metric Tons (met ton) Enters or converts a weight or volume value to metric tons. 7

10 C6 C1 Tons Enters or converts a weight or volume value to tons. Kilograms (kg) Enters or converts a weight or volume value to kilograms. 8 Miscellaneous Functions < Backspace Arrow Used to delete entries one keystroke at a time (unlike the O function, which deletes the entire entry). % Percentage Used to find a given percentage of a number. C% x 2 Squares the value on the display. C0 Total Cost (Cost) Calculates total cost based on entered or stored Unit Cost.

11 CR0 Unit Cost Stores the Unit Cost for calculating the total cost. To recall this setting, press R0. Default is 0.00 (no Unit Cost). C. Degrees:Minutes:Seconds (dms deg) Converts between D:M:S and decimal degree formats; repeated presses will toggle between the two formats. C= Square Root ( x) Calculates the Square Root of the number on the display. C+ Pi Displays value of π ( ). C- Change Sign (+/ ) Toggles displayed value between negative and positive value. Cx Clear All Returns all stored values to the default settings. Does not affect Preference Settings. 9

12 C Reciprocal (1/x) Finds the Reciprocal of a number (e.g., 8C = 0.125). 10 Construction and Prompting Keys S Square Up Calculates the Square-Up (diagonal) Length, Area and Perimeter when Length and Width are entered. CS LxWxH Calculates Volume, Wall Surface Area, Wall + Ceiling Area, Square-Up, Area and Perimeter when Length, Width and Height are entered. r Rafter (Basic) Calculates basic lengths and angles for Rafters. Cr Rafter (Advanced) Calculates advanced lengths and angles for Rafters. h Hip/Valley (Basic) Calculates basic lengths and angles for Regular and Irregular Hip/Valley Rafters.

13 Ch Hip/Valley (Advanced) Calculates advanced lengths and angles for Regular and Irregular Hip/Valley Rafters. j Jack Rafter (Basic) Calculates basic lengths and angles for Regular and Irregular Jack Rafters. Cj Jack Rafter (Advanced) Calculates advanced lengths and angles for Regular and Irregular Jack Rafters. s Stair (Basic) Calculates values for Stairs when Floor-to-Floor Rise and/or Stair Run is entered. Cs Stair (Advanced) Calculates values for Stairs, allowing for Upper and Lower Flooring Thickness, Nosing Length and Riser Thickness for additional calculations. c 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. 11

14 12 Cc Rake Wall Calculates various stud lengths for Rake Walls with or without bases. a Arc Calculates values for Chord Length, Arc Height, Radius, Arc Length/Angle, and Arc Segment Area. Ca Arch Studs Calculates Arch Stud lengths for Arched Walls. b Baluster Calculates for Cap Wall Balusters, where all baluster lengths are the same. Cb Open Baluster Calculates for Open Wall Balusters, which have different-length balusters on a tread. N Materials Accesses functions for Blocks, Drywall, Fencing, Footings, Pavers, Roofing, Studs and Tile.

15 CN Extras Accesses functions for Elliptical Arches, Crown Molding, Compound Angles, Polygons and Spacing. Also used to access Preferences for customizable settings (see Preference Settings section). ^ Up Arrow Used to scroll up (or back) through prompts, entries and solutions. v Down Arrow Used to scroll down (or forward) through prompts, entries and solutions. e Enter Used to enter or accept values. Ce Solve Used to skip the remaining entry prompts and proceed to the first available solution for the chosen function. 13

16 Using the Construction Master Plus EZ 14 This Pocket Reference Guide has step-by-step keystroked examples for some of the CMP EZ s functions. You can see, and download, a complete illustrated User s Guide with examples for all of the CMP EZ s functions at 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.

17 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). For keystroked examples on changing and setting Preferences, see the User s Guide. 15

18 16 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. 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" 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"

19 Rake Wall O.C. Spacing 16" Top Plate Thickness 1-1/2" Functions Metric Mode Common Rafter Ridge Thickness Rafter Width Plate Width Jack Rafter O.C. Spacing Rafter Thickness Hip/V Thickness Ridge Thickness Rake Wall O.C. Spacing Top Plate Thickness 38 mm 200 mm 10 0 m m 400 mm 38 mm 38 mm 38 mm 400 mm 38 mm Arch Studs O.C. Spacing 16" Location 1 = Outside Baluster/Open Baluster Maximum Spacing Hip/Valley Ridge Thickness Stairs Target Riser Height Target Tread Width Top Floor Thickness Headroom Height 100 mm 38 mm 190 mm 250 mm 250 mm m m Arch Studs O.C. Spacing 400 mm 17 Location 1 = Outside Default Values Continued

20 18 Materials U.S. Mode Blocks Block Height 8" Block Length 16" Waste Factor 5% Drywall Sheets Include Ceiling 1 = Yes Sheet Length 8' Sheet Length 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 Length 4" Waste Factor 5% Roofing 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 Roofing calculations are based on 4' x 8' Sheathing Size.

21 Studs O.C. Spacing 16" Waste Factor 5% Materials Metric Mode Blocks Block Height 215 mm Block Length 440 mm Waste Factor 5% Tile Grout Width 1/8" Tile Thickness 1/4" Waste Factor 5% Tile calculations are based on 3' x 5' Backer Board Size. Drywall Sheets Include Ceiling 1 = Yes Sheet Length 2400 mm Sheet Length 1200 mm Waste Factor 5% Default Values Continued 19

22 20 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 mm Waste Factor 5% Studs O.C. Spacing 400 mm Waste Factor 5% Roofing Waste Factor 5% Number of Nails per Shingle 4 Length of Nail 30 mm Number of Pieces per Bundle 21 Number of Bundles per Square 3 Roofing calculations are based on 1200 mm x 2400 mm Sheathing Size. Tile Grout Width 2 mm Tile Thickness 7 mm Waste Factor 5% Tile calculations are based on 900 mm x 1200 mm Backer Board Size.

23 Extras U.S. 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 Extras Metric Mode Elliptical Arch O.C. Spacing Position 400 mm 1 = Outside Crown Molding Corner Angle 90 Spring Angle 45 Spacing Object Width 38 mm End Position 1 = Beginning Mark Position 2 = On-center 21

24 Construction Examples For each of the functions shown in the Pocket Reference Guide and the User s Guide there is a box, like the ones shown, with 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 briefly before returning to the first 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 first input prompt. 22

25 Square-Up Required Entries Length Width LxWxH Required Entries Length Width Height solutions Square-Up Area Perimeter solutions Volume Vertical Surface Area Vertical + LxW Surface Area Square-Up LxW Area Perimeter 23 Continued

26 24 EXAMPLE: Enter a 15 8" Length, 12 6" Width and 4" Height: 1. Clear Calculator: OOO 2. Start Length x Width x Height function: CS 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 CU feet

27 e VERTICAL SURFACE AREA e VERTICAL + LxW AREA e SQUARE-UP e LxW AREA e PERIMETER SQ FEET SQ FEET 20 FEET 0-1/2 INCH SQ FEET 56 FEET 4 INCH 25

28 26 Advanced Rafters Required Entries Two of these required: Pitch Run (or Span) Rise Common Rafter Length 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* Possible Solutions 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

29 * 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 O or 0. Then, press e 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. EXAMPLE: Enter an 8" Pitch, a 12 Run, an 18" Overhang and 2-1/4" Total Fascia Thickness: 1. Clear Calculator: OOO 2. Start Advanced Rafter function: Cr 3. Enter 8" Pitch: 8ie 4. Enter 12 Run: 12fe Continued 27

30 28 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: e 8. Accept 7-1/4" default value for Rafter Width: e 9. Accept 3-1/2" default value for Top Plate Width and solve for Rafters: e COMMON RAFTER LNTH e TAIL LENGTH e TOTAL RAFTER LNTH 14 FEET 4-3/16 INCH 19-3/8 INCH 15 FEET 11-9/16 INCH e PLUMB ANGLE e LEVEL ANGLE 56.31

31 e STANDARD 2/3 HAP e FULL BEARING HAP e RISE Basic Hip/Valley Rafters Required Entries Two of the first three required: Common Pitch Run (or Span) Rise Optional Entries Irregular Pitch Possible Solutions Hip/Valley Length Plumb Angle Level Angle Common Cheek Angle Irregular Cheek Angle 5-13/16 INCH 6-3/8 INCH 8 FEET 0 INCH EXAMPLE: Find the Hip/Valley Rafter Lengths and Angles using an 8" Common Pitch and a 12 Run: 1. Clear Calculator: OOO Continued 29

32 30 2. Start Basic Hip/Valley function: h 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: e HIP/VALLEY LNTH 18 FEET 9-1/8 INCH e PLUMB ANGLE e LEVEL ANGLE e COMMON CHEEK ANGL EXAMPLE: Find the Hip/Valley Rafter Lengths and Angles using an 8" Common Pitch, an 8 Run and an Irregular Pitch of 10":

33 1. Clear Calculator: OOO 2. Start Basic Hip/Valley function: h 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 e PLUMB ANGLE e LEVEL ANGLE e COMMON CHEEK ANGL e IRREGULAR CHEEK ANGL

34 Advanced Stairs Required Entries 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" Possible Solutions 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 32

35 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 Target Tread Width or when the calculated Riser Height exceeds the Target 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. Continued 33

36 Example using Solve function: 34 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: Cs 3. Enter 10' 1" Floor-to-Floor Rise: 10f1ie 4. Accept 7-1/2" default value for Target Riser Height: e 5. Enter 15' 5" Stair Run: 15f5ie 6. Solve for Advanced Stairs: Ce (Solve)

37 NET FLOOR-FLOOR RISE 10 FEET 1 INCH e NUMBER OF RISERS 16. e* ACTUAL RISER HGHT. 7-9/16 INCH e NUMBER OF TREADS 15. e ACTUAL TREAD WDTH 12-5/16 INCH e MIN STAIRWELL OPEN 12 FEET 2-3/4 INCH e STRINGER LENGTH 19 FEET 3-1/2 INCH e INCLINE ANGLE e ROUGH STAIR RUN 15 FEET 5 INCH e TOE POSITION Ø1 1 FEET 2-7/16 INCH Continued presses of e will show all Toe Positions. e 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"). 35

38 Rake Wall Function Required Entries Two of the first three required: Pitch Run Rise On-center Spacing Default value: 16" Optional Entries Base Height Top Plate Thickness Default value: 1-1/2" Possible Solutions Top Plate Length Differential Length Inclination Angle Various Rake Wall Stud Sizes 36 EXAMPLE: Find the Stud lengths for a Rake Wall with an 8" Pitch and 6' Run using the default 16" Inch On-center Spacing and 1-1/2" Top Plate Thickness:

39 1. Clear Calculator: OOO 2. Start Rake Wall function: Cc 3. Enter Pitch: 8ie 4. Enter Run: 6fe 5. No Base Height: e 6. Accept 16 default value for On-center Spacing: e 7. Accept 1-1/2 default value for Top Plate Thickness and solve for Rake Wall: e Continued 37

40 TOP PLATE LENGTH 7 FEET 2-9/16 INCH e DIFFERENTIAL LNTH 10-11/16 INCH e INCLINATION ANGL e RAKE WALL STUD Ø1 3 FEET 10-3/16 INCH e RAKE WALL STUD Ø2 2 FEET 11-1/2 INCH e RAKE WALL STUD Ø3 2 FEET 0-7/8 INCH e RAKE WALL STUD Ø4 1 FEET 2-3/16 INCH e RAKE WALL STUD Ø5 0 FEET 3-1/2 INCH 38

41 Materials Functions Press the N key to access the Materials function. Continued presses of the N key will scroll though the available Materials. When you find the Material you re working with, press e, and you will be prompted for the required dimensions and quantities. Blocks (for Block walls) Drywall (Sheets) Fencing Footing (Volume) Pavers Roofing Studs Tile (Tile and Grout quantity) 39

42 Studs Required Entries Wall Length Number of Corners Number of Windows Number of Doors On-center Spacing Default value: 16 Optional Entries Waste Factor Default value: 5% Possible Solutions Number of Studs 40 EXAMPLE: Find the number of Studs required for a wall 40 long with two corners, two windows and one door: 1. Clear Calculator: OOO

43 2. Go to Materials function: N (If necessary, continue pressing N until STUDS displays.) 3. Start Studs Function: e 4. Enter 40' Total Wall Length: 40fe 5. Enter two Corners: 2e 6. Enter two Windows: 2e 7. Enter one Door: 1e 8. Accept 16" default value for Stud On-center Spacing: e 9. Accept 5% default value for Waste Factor and solve for Number of Studs: e NUMBER OF STUDS

44 Extras Press C N to access the Extras functions. Continued presses of the N key will scroll through available functions. When you find the function you want, press e to begin prompting sequence. Preferences Elliptical Arch Crown Molding Compound Angle Polygons Spacing 42

45 Preference Settings Press C, then N to access the Extras functions. Press N until Preferences displays and press e. Continued presses of the e key will scroll through the different Preferences. The v and ^ keys scroll through the available options for each Preference. Press O to exit Preferences. Your calculator will keep your Preference Settings until a Full Reset alters your settings to the default values. You can change your Preferences at any time. Keystrokes for changing all Preference Settings can be found in the User s Guide at Continued 43

46 44 DESCRIPTION DEFAULT OPTIONS Fractional Resolution 1/16 1/8, 1/4, 1/2, 1/64, 1/32 U.S. vs. Metric Mode U.S. MODE METRIC MODE Area Answer Format STANDARD SQ FEET, SQ YD, SQ M Volume Answer Format STANDARD CU YD, CU FEET, CU M Target vs. Maximum Stair Riser TARGET RISER HEIGHT MAX RISER HEIGHT Rake Wall Display Order DESCENDING ASCENDING Jack Rafter Display Order DESCENDING ASCENDING Jack Rafter Alignment ON-CENTER MATE Run vs. Span Entry RUN SPAN Linear Meter Rounding FIXED ACTUAL Decimal Degree Rounding FIXED ACTUAL Mathematical Operation ORDER OF ENTRY ORDER OF OPERATIONS Fractional Mode STANDARD FIXED The Construction Master Plus EZ User s Guide ( has complete keystrokes of Preference Settings

47 Elliptical Arch Function Required Entries Height Width Stud On-center Spacing Default value: 16" Stud Location Default setting: Outside the Arch* Optional Entries Base Height Possible Solutions Center to Foci Length Foci to Foci Length String Point-to-Point Length String Loop Length Arch Area Center Stud Length Other Stud Lengths * Stud Position or Location refers to the placement of the studs: Entering 1 calculates studs located Outside of the Arch Entering 2 calculates studs located Inside of the Arch. Note: All Elliptical Arch solutions are based on 180 arch angles. Continued 45

48 46 EXAMPLE: Solve for an Elliptical Arch that is 5' high, 15' wide and has a Base Height of 3'. Studs are Outside the Arch: 1. Clear Calculator: OOO 2. Go to Extras function: CN (If necessary, continue pressing N until ELLIPTICAL ARCH displays.) 3. Start Elliptical Arch function: e 4. Enter Elliptical Arch Height: 5fe 5. Enter Elliptical Arch Width: 15fe 6. Enter Base Height: 3fe

49 7. Accept 16" default value for Stud O.C. Spacing: e 8. Accept default Stud Position (Outside the Arch) and solve for Elliptical Arch: e CENTER TO FOCI LNTH e FOCI TO FOCI LNTH e STRING PT. TO PT. LNTH e STRING LOOP LNTH e ARCH AREA e CENTER STUD LNTH e STUD PAIR LENGTH Ø1 e STUD PAIR LENGTH Ø2 e STUD PAIR LENGTH Ø3 5 FEET 7-1/16 INCH 11 FEET 2-3/16 INCH 15 FEET 0 INCH 26 FEET 2-3/16 INCH SQ FEET 3 FEET 0 INCH 3 FEET 0-15/16 INCH 3 FEET 3-15/16 INCH 3 FEET 9-1/4 INCH 47 Continued

50 e STUD PAIR LENGTH Ø4 e STUD PAIR LENGTH Ø5 e STUD PAIR LENGTH Ø6 4 FEET 5-13/16 INCH 5 FEET 8-1/2 INCH 8 FEET 0 INCH Battery This model uses one CR2025 battery (included). This should last approximately 800 hours of actual use (1 year plus for most people). 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. 48 Replacement batteries are available at most discount or electronics stores. You may also call Calculated Industries at

51 Reset If your calculator should ever lock up, press Reset a small hole located above the o key to perform a total reset. The calculator will return to its factory Default Settings and Preferences. Warranty and Repairs Your calculator has a full one-year limited warranty. For complete details about Warranty and Repairs, go to 49

52 For a complete list of keystrokes and Preference Settings, or more examples, visit: Hytech Drive Carson City, NV U.S.A Fax: info@calculated.com PRG4067E-A