Calculated Industries 44080 Construction Master Pro Desktop v3.0 User Manual
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Calculated Industries 44080 Construction Master Pro Desktop v3.0 User Manual

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ONSTRUCTION
ASTER
RO
®
User's Guide
For Models:
4065 Construction Master Pro v3.0
4080 Construction Master Pro Trig v3.0
44080 Construction Master Pro Desktop v3.0

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Summary of Contents for Calculated Industries 44080 Construction Master Pro Desktop v3.0

  • Page 1 ONSTRUCTION ASTER ® User’s Guide For Models: 4065 Construction Master Pro v3.0 4080 Construction Master Pro Trig v3.0 44080 Construction Master Pro Desktop v3.0...
  • Page 2 ® ’ ONSTRUCTION ASTER UIDE This User’s Guide helps you solve common construction math and material estimation problems using the latest Construction Master Pro calculators—three of the most powerful feet-inch-fraction calculators to date: The Construction Master Pro III Series — 1.
  • Page 3 INTRODUCTION The Construction Master Pro line includes the most advanced feet- inch-fraction calculators designed specifically for building pro’s! The Pro calculators handle practically any problem involving meas- urements and can be used to save time, prevent errors, and accu- rately perform common building projects such as: estimating con- crete volume, squaring-up foundations, framing roofs, ordering lum- ber, building stairs, walls, laying driveways, carpet or floor covering, figuring precise angle calculations, or simply working in feet-inch-...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS GETTING STARTED ................8 KEY DEFINITIONS .................8 Basic Operation Keys ..............8 Convert Ç Key – Unit Conversions and Second Functions ..8 Memory and Storage Functions...........9 Recall ® Key................10 Dimensional Measurement Unit Keys........10 Area and Volume Keys ( #4080) ..11 NOT AVAILABLE ON TRIG MODEL Weight Keys ................12 Construction Project Keys............13...
  • Page 5 Converting Decimal Inches to Fractional Inches .......31 Square Conversions ..............31 Cubic Conversions..............31 PERFORMING BASIC MATH WITH DIMENSIONS .....32 Adding Dimensions ..............32 Subtracting Dimensions .............32 Multiplying Dimensions ..............32 Dividing Dimensions ..............32 Percentage Calculations ............33 MEMORY OPERATION ..............33 Basic Cumulative Memory (M+)..........34 Permanent Storage Registers (M1 and M2)......34 PAPERLESS TAPE OPERATION ..........35 EXAMPLES –...
  • Page 6 BOARD FEET – LUMBER ESTIMATION ........46 Total Board Feet – With Dollar Cost ..........46 Number of Board Feet Based on Entered Volume ....46 CIRCLE AND ARC CALCULATIONS..........47 Circumference and Area of a Circle...........47 Arc Length – Degree and Diameter Known .......47 Arc Length –...
  • Page 7 Irregular Hip/Valley and Jack Rafters – Descending, with On-Center Spacing Maintained ..........68 Irregular Hip/Valley and Jack Rafters – Ascending, with Jacks Mating at Hip/Valley ............70 Rake-Wall – No Base ..............72 Rake-Wall – With Base ..............73 ROOFING MATERIALS ..............74 Roof Covering – Entering Pitch, Length and Width ....74 Roof Covering –...
  • Page 8 RESET KEY ..................97 APPENDIX F – AREA/VOLUME FORMULAS ........98 AREA FORMULAS................98 SURFACE AREA/VOLUME FORMULAS ........99 REPAIR AND RETURN ..............100 WARRANTY ...................101 INDEX.....................104 ’ — 7 UIDE...

  • Page 9: Getting Started

    GETTING STARTED KEY DEFINITIONS Basic Operation Keys On/Clear — Turns power on. Pressing once clears the display. Pressing twice clears all temporary values. Turns all power off, clearing all non-permanent registers. + – x Arithmetic operation keys. ÷ = Four-function (+, -, x, ÷) percent key. (See page 33 for examples.) 0 –...

  • Page 10: Memory And Storage Functions

    Ç ÷ 1/x — Finds the reciprocal of a number (e.g., 8 Ç ÷ = 0.125). Ç – Change Sign (+/–) — Toggles the sign of the dis- played value to positive or negative. Pi ( π ) — Constant = 3.141593 Ç...

  • Page 11: Recall ® Key

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

  • Page 12: Area And Volume Keys ( Not Available On Trig Model #4080)

    Meters — Enters or converts to meters . Ç 7 Centimeters — Enters or converts to centimeters . Ç 9 Millimeters — Enters or converts to millimeters . Ç 2 Acres — Enters or converts (a square value) to acres . Ç...

  • Page 13: Weight Keys

    Weight Keys Ç 1 Kilograms (kg) — Enters or converts (a weight or volume value) to kilograms . A dimensioned volume will convert using the stored weight per volume value. Ç 3 Metric Tons (met tons) — Enters or converts (a weight or volume value) to Metric tons .

  • Page 14: Construction Project Keys

    Construction Project Keys The following Construction Project Keys help you instantly figure quantities and costs of materials, so you can build like a pro! Block/Brick Keys ( #4080) NOT AVAILABLE ON TRIG MODEL The Blocks function helps you quickly estimate the quantity of blocks or bricks required for building walls, walkways or other areas.
  • Page 15 Ç a Radius — Enters or calculates the circle radius (e.g., 5 f Ç a). Arc Length or Degree of Arc — A multi-function key that enters or calculates arc length or degree of arc , and further solves for additional circular/arc val- ues, including arched rake-walls (based on the stored on-center spacing), listed below.

  • Page 16: Column/Cone Key

    Column/Cone Key The Column and Cone functions help you quickly estimate volume and surface area of columns or cones. Ç C Column and Cone — With an entered diameter and rise, the first and second presses of C (follow- ing Ç) will calculate the total volume and surface area of a column ;...

  • Page 17: Drywall Keys ( Not Available On Trig Model #4080)

    Drywall Keys ( #4080) NOT AVAILABLE ON TRIG MODEL Ç h Drywall Sheets — Calculates the number of 4x8, 4x9, and 4x12 sheets for an entered or calculated area. Footing Keys ( #4080) NOT AVAILABLE ON TRIG MODEL The Footing keys help you quickly estimate the volume of concrete required for concrete footings.

  • Page 18: Right Triangle/Roof Framing Keys

    Right Triangle/Roof Framing Keys Right Triangle: Using the Pythagorean theorem, the top row of keys on your Construction Master Pro will calculate instant solutions in dimensional format to right triangle problems (particularly, roof framing). The Construction Master Pro’s keys are labeled in easy to remember roofing terms.

  • Page 19: Hip/Valley And Jack Rafter Keys

    Ç p Pitch Ratio or Slope — Enters the pitch as a ratio or slope of a roof (or right triangle). For example, 0.58 slope is entered as • 5 8 Ç p. Enters or calculates the rise or vertical leg (height) of a right triangle.
  • Page 20 When calculating regular and irregular jack rafter lengths, you will see the letters “JK” (regular pitch side) or “IJ” (irregular pitch side) and the corresponding jack number to the left of your calculator dis- play. This will help you keep track of the descending sizes and which side the corresponding rafter is based on.

  • Page 21: Rake-Wall Function

    (Cont’d) Note: You may set your calculator to display the jack rafter lengths in either ascending or descending order (see Preference Settings on page 89). Note: You may program your calculator to “mate up” with the jack rafters, rather than using the entered or default on-center spacing for both sides (see Preference Settings on page 89).

  • Page 22: Roof Materials/Covering Keys

    Roof Materials/Covering Keys The Construction Master Pro's Roof function provides a quick calcu- lation of roof area, number of squares and bundles, and number of 4x8 sheets required for roof coverage. Ç d Roof — Given an entered pitch (or rise and run) and plan area (or Length and Width), calculates the following: Press Result...
  • Page 23 (Cont’d) Press Result Stored (Desired) Riser Height (R-HT STORED) Stored (Desired) Tread Width (T-WD STORED) Stored Headroom (HDRM STORED) Stored Floor Thickness (FLOR STORED) Note: Default values are 7-1/2 inches for Desired Riser Height and 10 inches for Desired Tread Width, 10 inches for Floor Thickness, and 6 feet 8 inches for Headroom Height.

  • Page 24: Studs

    Ç s Riser Limited — Used for situations when the riser height is limited by local code. When you press Ç s, the calculator will recalculate stair values so that the actual riser height will not exceed your stored desired riser height (e.g., it will never exceed the stored desired riser height of 7-1/2 inches, if 7-1/2 inches is the value stored using ß...
  • Page 25 The Trig model (#4080) and Desktop (#44080) calculators have standard trigonometric keys, in addition to right triangle/rafter keys (e.g., rise, run, diagonal), for advanced right triangle mathematics. The sine, cosine and tangent of an angle are defined in relation to the sides of a right triangle.

  • Page 26: Entering Dimensions

    ENTERING DIMENSIONS Entering Linear Dimensions When entering feet-inch-fraction values, enter dimensions from largest to smallest — e.g., feet before inches, and inches before fractions. Enter fractions by entering the numerator (top), pressing / (fraction bar key), and then the denominator (bottom). Note: If a denominator is not entered, the fractional setting value is used.
  • Page 27 Examples of Entering Square and Cubic Dimensions: YARDS y y — Square Yards (e.g., 5 y y will display 5. SQ YD). y y y — Cubic Yards (e.g., 5 y y y will display 5. CU YD). FEET f f — Square Feet (e.g., 5 f f will display 5.

  • Page 28: Setting Fractional Resolution

    SETTING FRACTIONAL RESOLUTION The Construction Master Pro is set to display fractional answers in 16ths of an inch. All examples in this User’s Guide are based on 1/16”. However, you may select the fractional resolution to be dis- played in other formats (e.g., 1/64”, 1/32”, etc.). The two methods of changing fractional resolution are shown below.

  • Page 29: Setting Fraction Resolution - Using Ç

    Setting Fractional Resolution — Using Ç KEYSTROKE DISPLAY 1. Clear calculator: 0.00 2. Set calculator to 1/2: Ç 2 FRAC 0-1/2 INCH 3. Set calculator to 1/32: Ç 3 FRAC 0-1/32 INCH 4. Set calculator to 1/4: Ç 4 FRAC 0-1/4 INCH 5.

  • Page 30: Setting Fixed/Constant Fractional Resolution

    Setting Fixed/Constant Fractional Resolution You can also program your calculator so that the displayed fraction will always show in the fractional resolution you have set (following the above instructions). That is, instead of solving for the closest fraction, it will always display the chosen fractional resolution. For example, if you have chosen 1/64ths via Ç...

  • Page 31: Conversions (Linear, Area, Volume)

    CONVERSIONS (LINEAR, AREA, VOLUME) Linear Conversions Convert 14 feet to other dimensions: KEYSTROKE DISPLAY 1 4 f FEET Ç y 4.666667 FEET INCH INCH 4.267 Ç 7 (cm) 426.720 Ç 9 (mm) 4267.200 Note: When performing multiple conversions, you only have to press the Ç key once except when accessing secondary functions, such as Ç...

  • Page 32: Converting Fractional Inches To Decimal Inches

    Converting Fractional Inches to Decimal Inches Convert 8-1/8 inches to decimal inches. Then convert to decimal feet. KEYSTROKE DISPLAY 8 i 1 / 8 8-1/8 INCH Ç i 8.125 INCH 0.677083 FEET 8.125 INCH Converting Decimal Inches to Fractional Inches Convert 9.0625 inches to fractional inches.

  • Page 33: Performing Basic Math With Dimensions

    PERFORMING BASIC MATH WITH DIMENSIONS Adding Dimensions KEYSTROKE DISPLAY Add 11 inches to 2 feet 1 inch: 1 1 i + 2 f 1 i = FEET INCH Add 5 feet 7-1/2 inches to 18 feet 8 inches: 5 f 7 i 1 / 2 + 1 8 f 8 i = 3-1/2 FEET INCH...

  • Page 34: Percentage Calculations

    Percentage Calculations The percent % key is used to find a given percent of a number or to perform add-on, discount or division percentage calculations. You may also perform percentage calculations with dimensional units (feet, inch, etc.), in any format (linear, square or cubic). Examples: KEYSTROKE DISPLAY...

  • Page 35: Basic Cumulative Memory (M+)

    (Cont’d) FUNCTION KEYSTROKES 0 ß 2 Clear register M2 0 ß 3 Clear register M3 ® 1 Recall stored value in M1 ® 2 Recall stored value in M2 ® 3 Recall stored value in M3 Basic Cumulative Memory (M+) Example: Store 100 into M+, add 200, and then subtract 50.

  • Page 36: Paperless Tape Operation

    PAPERLESS TAPE OPERATION Note: Not available on DT (Desktop) Printer — Model #44065. The Paperless Tape allows you to display and review the last twenty entries of a regular math or basic dimensional math string calculation. To access this mode after entering values, press ® =. Then, press + or –...
  • Page 37 (Cont’d) KEYSTROKE DISPLAY 4. Scroll last two values: – 04+ 7 FEET INCH – 03+ 6 FEET INCH 5. Exit tape function and continue: TTL= 22 FEET INCH FEET INCH 2 f = FEET INCH 36 — C ® ONSTRUCTION ASTER ESKTOP...

  • Page 38: Examples - Using The Construction Master Pro

    EXAMPLES — USING THE CONSTRUCTION MASTER PRO The Construction Master Pro calculators have keys and functions labeled in common building terms. Just follow the examples and adapt the keystrokes to your specific application. Please note that some of the following examples will not apply to your specific calculator model.

  • Page 39: Window Measurement

    Window Measurement What is the total width of three window openings, if each measures 2 feet 5 inches in width? KEYSTROKE DISPLAY 1. Enter window width: 2 f 5 i FEET INCH 2. Find total width: x 3 = FEET INCH 3.

  • Page 40: Area Calculations

    AREA CALCULATIONS Square Area (x What is the area of a square room with sides measuring 7 feet 4 inches? KEYSTROKE DISPLAY 7 f 4 i Ç % (x 53.77778 SQ FEET Area of a Rectangular Room (LxW) What is the area of a room measuring 12 feet 6 inches by 15 feet 8 inches? KEYSTROKE DISPLAY...

  • Page 41: Volume Calculations

    VOLUME CALCULATIONS Rectangular Containers (LxWxH) What is the volume of a rectangular container that measures 3 feet by 1 foot 9-5/8 inches by 2 feet 4 inches? KEYSTROKE DISPLAY 1. Find volume in cubic feet: FEET x 1 f 9 i 5 / 8 9-5/8 FEET INCH...

  • Page 42: Volume Of A Cylinder

    Volume of a Cylinder Calculate the volume of a cylinder with a diameter of 2 feet 4 inches and a height of 4 feet 6 inches: *Note: For a cylinder, use the Column function. KEYSTROKE DISPLAY 1. Find circle area: 2 f 4 i FEET INCH...

  • Page 43: Weight/Volume Conversions

    WEIGHT/VOLUME CONVERSIONS Weight Conversions Convert 2,500 pounds to kilograms, tons and metric tons: KEYSTROKE DISPLAY 1. Enter pounds: 2 5 0 0 Ç 4 (lbs) 2500 2. Convert to kilograms, tons and metric tons: Ç 1 (kg) 1133.981 Ç 6 (tons) 1.25 Ç...

  • Page 44: Blocks/Bricks ( Not Available On Trig Model #4080)

    BLOCKS/BRICKS ( #4080) NOT AVAILABLE ON TRIG MODEL Number of Blocks, Based on Calculated Area You are building an “L” shaped retaining wall out of standard 8-inch x 16-inch size blocks (Note: this is the default block size of 128 sq. inches) .

  • Page 45: Number Of Blocks, Based On Calculated Perimeter

    Number of Blocks, Based on Calculated Perimeter Calculate the wall’s perimeter if the length is 30 feet and width 45 feet. Then, find the number of blocks required. Add a 3% waste allowance. KEYSTROKE DISPLAY 1. Find wall area: 3 0 f l LNTH 30 FEET INCH...

  • Page 46: Number Of "Face" Bricks

    Number of “Face” Bricks How many “face” bricks (21 square inch size) will you need to purchase to fill a 40 foot by 8 foot wall, if you include a 3% waste allowance? Use the Block function for calculating bricks. KEYSTROKE DISPLAY 1.

  • Page 47: Board Feet - Lumber Estimation

    BOARD FEET — LUMBER ESTIMATION The Construction Master Pro easily calculates board feet for lumber estimation problems. Simply enter the board’s cubic dimensions and press Ç 8 to convert to board feet. Use Ç 0 (Cost) to figure total lumber cost. Note: Unit cost is entered in the standard per thousand board foot measure (Mbm) format.

  • Page 48: Circle And Arc Calculations

    CIRCLE AND ARC CALCULATIONS Circumference and Area of a Circle Find the area and circumference of a circle with a diameter of 11 inches: KEYSTROKE DISPLAY 1 1 i C DIA 11 INCH AREA 95.03318 SQ INCH CIRC 34-9/16 INCH Arc Length —...

  • Page 49: Arc Calculations - Arc Length And Diameter Known

    Arc Calculations — Arc Length and Diameter Known Find the arc degree, chord length, segment rise, segment and pie slice area, and segment rise, given a 5-foot diameter and an arc length of 3 feet 3 inches: KEYSTROKE DISPLAY 1. Enter circle diameter (Note: enter diameter into the C key): 5 f C DIA 5 FEET...

  • Page 50: Arched/Circular Rake-Walls - Chord Length And Segment Rise Known

    Arched/Circular Rake-Walls — Chord Length and Segment Rise Known You’re building a circular or arched rake wall. Given a chord length of 15 feet and a rise of 5 feet, find all arc values and lengths of the arched walls. The on-center spacing is 16 inches. KEYSTROKE DISPLAY 1.

  • Page 51: Arched Windows

    (Cont’d) KEYSTROKE DISPLAY 10. Find arched wall stud lengths: AW1 4 10-11/16 FEET INCH AW2 4 6-5/8 FEET INCH AW3 3 11-3/8 FEET INCH AW4 3 0-1/16 FEET INCH AW5 1 6-1/4 FEET INCH Note: Successive presses of a will toggle to the beginning. Arched Windows Find the radius of an arched window with a chord length of 2 feet 7 inches and a rise of 10-1/2 inches.

  • Page 52: Compound Miter

    COMPOUND MITER Compound Miter Cuts You’re installing crown moulding on the upper wall of your living room. If the wall corner angle is 60° and the crown angle is 38°, find the miter angle cut and blade tilt cuts. KEYSTROKE DISPLAY 1.

  • Page 53: Concrete/Paving

    CONCRETE/PAVING Volume of Concrete for a Driveway Find the cubic yards of concrete required to pour a driveway with the following dimensions: 36 feet 3 inches long by 11 feet 6 inches wide by 4 inches deep. If concrete costs $55 per cubic yard, what is the total cost? KEYSTROKE DISPLAY...

  • Page 54: Concrete Columns

    Concrete Columns Find the cubic yards of concrete required to pour five columns, if each has a diameter of 3 feet 4-1/2 inches and a height of 11 feet 6 inches. If the concrete weighs 1.75 tons per cubic yard, what is the total weight in tons? In pounds? In kilograms? KEYSTROKE DISPLAY...

  • Page 55: Complex Concrete Volume

    Complex Concrete Volume You’re going to pour an odd-shaped patio 4-1/2 inches deep with the dimensions shown below. Calculate the total area (by dividing the drawing into three rectangles) and determine the total yards of con- crete required. Then, find the total cost, if concrete costs $45 per cubic yard.

  • Page 56: Polygon, Finding Angles Based On Entered Radius And Number Of Sides

    (Cont’d) KEYSTROKE DISPLAY 4. Find total area and clear memory: ® ® M+ 616.5 SQ FEET 5. Find total cubic yards: x 4 i 1 / 2 = 8.5625 CU YD 6. Find total cost: x 4 5 Ç 0 (Cost) $385.31 Polygon, Finding Angles Based on Entered Radius and Number of Sides...

  • Page 57: Concrete Footings ( Not Available On Trig Model #4080)

    Concrete Footings ( #4080) NOT AVAILABLE ON TRIG MODEL Find the volume of concrete required for a 16 inch by 8 inch footing that measures 232 feet 6 inches in length. Then find the volume of five columns of the same size. KEYSTROKE DISPLAY 1.

  • Page 58: Squaring-Up A Foundation

    Squaring-up a Foundation A concrete foundation measures 45 feet 6 inches by 23 feet 8 inch- es. Find the diagonal measurement (square-up) to ensure the form is perfectly square. KEYSTROKE DISPLAY 1. Enter sides as rise/run: 2 3 f 8 i r RISE 23 FEET INCH...

  • Page 59: Drywall ( Not Available On Trig Model #4080)

    DRYWALL ( #4080) NOT AVAILABLE ON TRIG MODEL Number of Drywall Sheets for a Given Area Find the number of 4x8, 4x9 and 4x12 sheets to cover an area of 150 square feet. KEYSTROKE DISPLAY 1. Enter area: 1 5 0 f f 150.

  • Page 60: Grade/Slope

    GRADE/SLOPE Back-Fill on a Slope — Percent of Grade Known You’ve built 55 linear feet of a 3-foot high retaining wall that is 3 feet from the base of a 65% grade. You need to pour back-fill within 12 inches of the top of the wall (for a 2 foot depth). How many cubic yards of fill should you have delivered? KEYSTROKE DISPLAY...

  • Page 61: Right Triangle And Roof Framing Examples

    RIGHT TRIANGLE AND ROOF FRAMING EXAMPLES 60 — C ® ONSTRUCTION ASTER ESKTOP...

  • Page 62: Roof Framing Definitions

    Roof Framing Definitions Rise: The vertical distance measured from the wall’s top plate to the top of the ridge. Span: The horizontal distance or full width between the outside edges of the wall’s top plates. Run: The horizontal distance between the outside edge of the wall’s top plate and the center of the ridge;...
  • Page 63 Regular Roof: A standard roof where the Hips and/or Valleys run at 45° and have the same pitch/slope on both sides of the Hip and/or Valley. Irregular Roof: A non-standard roof where the Hips and/or Valleys bisect two different pitches/slopes, or have “skewed wings” or irregu- lar Jacks.

  • Page 64: Degree Of Pitch

    Degree of Pitch If the degree of pitch is 30.45°, what is the percent grade, slope and pitch in inches? KEYSTROKE DISPLAY 3 0 • 4 5 p PTCH 30.45° %GRD 58.78702 SLP 0.58787 PTCH 7-1/16 INCH Note: To convert Pitch in Inches: Simply enter the pitch in inches first (e.g., 7 i p ), then continuously press the p key to calculate the pitch conversions, as above.

  • Page 65: Common Rafter Length

    Common Rafter Length If a roof has a 7/12 pitch and a span of 14 feet 4 inches, what is the point-to-point length of the Common rafter (excluding the overhang or ridge adjustment)? What are the Plumb and Level cuts? Note: Run is half the Span.

  • Page 66: Angle And Diagonal (Hypotenuse)

    Angle and Diagonal (Hypotenuse) Find the diagonal (hypotenuse) and degree of angle of a right triangle that is 9 feet high and 12 feet long. KEYSTROKE DISPLAY 1. Enter rise and run: 9 f r RISE 9 FEET INCH 1 2 f R RUN 12 FEET INCH...

  • Page 67: Sheathing Cut

    Sheathing Cut You have framed an equal pitch roof and need to apply the roof sheathing. Find the distance from the corner of the sheathing so that you can finish the run at the Hip rafter and cut the material. The pitch is 6 inches and you are using 4-foot by 8-foot plywood, with the 8-foot side along the plate.

  • Page 68: Jack Rafters - Using Other Than 16 Inch On-Center Spacing

    (Cont’d) KEYSTROKE DISPLAY 3. Find Jack rafter lengths and cut angles: JKOC 16 INCH JK1 8 2-3/8 FEET INCH JK2 6 7-7/8 FEET INCH JK3 5 1-3/8 FEET INCH JK4 3 6-13/16 FEET INCH JK5 2 0-5/16 FEET INCH JK6 0 5-13/16 FEET INCH...

  • Page 69: Irregular Hip/Valley And Jack Rafters - Descending, With On-Center Spacing Maintained

    Irregular Hip/Valley and Jack Rafters — Descending, with On-Center Spacing Maintained You’re working with a 7/12 pitch and half your overall span is 4 feet. The irregular pitch is 8/12, and 16 inch on-center spacing is main- tained on both sides. Complete the following steps: (1) Find the length of the common rafter;...
  • Page 70 (Cont’d) KEYSTROKE DISPLAY 4. Find irregular jack lengths: Ç j IJOC 16 INCH IJ1 2 9-5/8 FEET INCH IJ2 1 4-13/16 FEET INCH IJ3 0 FEET INCH *Note: It is not necessary to continue pressing Ç when displaying each Jack rafter size.

  • Page 71: Irregular Hip/Valley And Jack Rafters - Ascending, With Jacks Mating At Hip/Valley

    Irregular Hip/Valley and Jack Rafters — Ascending, with Jacks Mating at Hip/Valley You’re working with a 7/12 pitch and half your overall span is 4 feet. The irregular pitch is 8/12, and the jacks need to mate at the Hip. The maximum allowable on-center spacing is 16 inches.
  • Page 72 (Cont’d) KEYSTROKE DISPLAY 4. Enter irregular pitch and find irregular Hip/Valley rafter length and cut angles: 8 i Ç H IPCH 8 INCH IH/V 5 9-11/16 FEET INCH PLMB 23.70° LEVL 66.30° CHK1 41.19° CHK2 48.81° 5. Display the o.c. and find the irregular jack lengths and cut angles: Ç...

  • Page 73: Rake-Wall - No Base

    Rake-Wall – No Base Find each stud size in a rake-wall with a peak (rise) of 4 feet, and a length (run) of 8 feet. Use 16 inches as your spacing. Note: The wall has no base. KEYSTROKE DISPLAY 1. Enter rise and run and display o.c. spacing: 4 f r RISE 4 FEET...

  • Page 74: Rake-Wall - With Base

    Rake-Wall – With Base Find each stud size in a rake-wall with a peak (rise) of 4 feet, a length (run) of 8 feet, and a base of 5 feet. Use 16 inches as your on-center spacing. KEYSTROKE DISPLAY 1. Enter rise, run, and o.c. spacing: 4 f r RISE 4 FEET...

  • Page 75: Roofing Materials

    ROOFING MATERIALS The Roof function solves for the amount of bundles and squares for standard gable-end style roofs. Bundles are based on a coverage area of 33.33 square feet, and squares are based on 100 square feet. Roof Covering — Entering Pitch, Length and Width Find the roof area and number of roofing squares, number of bundles and 4x8 sheets required for a 10-inch pitch roof covering a floor area of 14 feet by 11 feet.

  • Page 76: Roof Covering - Entering Rise, Run (No Pitch) And Area

    Roof Covering — Entering Rise, Run (No Pitch) and Area Find the roof covering, pitch and plan area if the rise is 15 feet and run 30 is feet. The length of the floor area is 10 feet and width 20 feet. KEYSTROKE DISPLAY 1.

  • Page 77: Stair Layout Examples

    STAIR LAYOUT EXAMPLES Stair Layout Definitions Rise: The “floor-to-floor” or “landing-to-landing” rise is the actual ver- tical rise required for building a stairway after the finish flooring has been installed. Run: The run of a stairway is the amount of horizontal space required.
  • Page 78 Number of Risers: The number of risers includes both the first and the last riser of the stairway. Riser Overage or Underage: The riser overage or underage is the difference between the “floor-to-floor” rise and the total height of all of the risers.

  • Page 79: Stairs - Given Only Floor-To-Floor Rise

    Stairs — Given Only Floor-to-Floor Rise You’re building a stairway with a total rise of 9 feet 11 inches. Your desired riser height is 7-1/2 inches and desired tread width is 10 inches. The desired headroom is 6 feet 8 inches and floor thickness 10 inches*.
  • Page 80 Notes on Changing Stored Stair Variables: To Change Desired Riser Height: If you wish to use a Desired Riser Height of other than 7-1/2 inches (the calculator’s default), simply enter a new value. For example, to enter 8 inches, enter 8 i ß...

  • Page 81: Stairs - Given Only The Run

    Stairs — Given Only the Run You’re building a stairway with a total run of 20 feet. Your desired riser height is 7-1/2 inches and desired tread width is 10 inches. The desired headroom is 6 feet 8 inches and floor thickness 10 inches. Find all stair values, then calculate the rise.

  • Page 82: Stairs - Given Rise And Run

    Stairs — Given Rise and Run You need to build a stairway with a floor-to-floor height of 10 feet 1 inch, a run of 15 feet 5 inches, and a nominal desired riser height of 7-1/2 inches (default). Calculate all stair values. KEYSTROKE DISPLAY 1.

  • Page 83: Stairs - Given Rise And Run, Using "Riser Limited" Function For Code Restrictions

    Stairs — Given Rise and Run, Using “Riser Limited” Function for Code Restrictions Your local code prohibits risers greater than 7-1/2 inches. You need to build a stairway with a floor-to-floor height of 10 feet 1 inch, a run of 15 feet 5 inches. Calculate all stair values. Use the “Riser Limited” function (second function of the s key) to calculate a riser height that does not exceed the stored Desired Riser Height of 7-1/2.”...

  • Page 84: Baluster Spacing

    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 balus- ters to be about 4 inches. If each baluster is 1-1/2 inches wide, what is the exact spacing between each baluster? KEYSTROKE DISPLAY...

  • Page 85: Studs

    STUDS Find the number of 16-inch on-center studs needed for a wall with a length of 18 feet 7-1/2 inches. KEYSTROKE DISPLAY 1. Enter length and convert to Studs*. 1 8 f 7 i 1 / 2 7-1/2 FEET INCH Ç...

  • Page 86: Trigonometric Functions

    TRIGONOMETRIC FUNCTIONS Trigonometric functions are available on the Construction Master Pro Trig and Construction Master Pro Desktop calculators. The drawing and formulas below list basic trigonometric formulas, for your reference: Given side A and angle a, find: A ÷ a ç = Side C (i.e., 3 f ÷...

  • Page 87: Converting Percent Grade To D:m:s

    Converting Percent Grade to D:M:S You are grading a piece of property and the site plans call for an embankment with a grade “no steeper than 35%.” Your level shows the slope at an 18°15’ angle. Will this pass? KEYSTROKE DISPLAY Enter grade and convert to degrees:minutes:seconds: 3 5 % Ç...

  • Page 88: Angle - Rise And Hypotenuse Known

    Angle — Rise and Hypotenuse Known Find the angle that connects the rise and hypotenuse of a right trian- gle, if the rise is 6 feet and the hypotenuse is 10 feet in length. KEYSTROKE DISPLAY 1. Use trigonometric formula (divide rise(A) by hypotenuse(C)): 6 f ÷...

  • Page 89: Appendix A - Default Settings

    APPENDIX A — DEFAULT SETTINGS After a Clear All (Ç x), your calculator will return to the following settings: STORED VALUES DEFAULT VALUE Desired Riser Height 7-1/2 Inch Desired Tread Width 10 Inch Floor Height 10 Inch On-Center Spacing 16 Inch Weight per Volume 1.5 Tons/Cu Yd Block Area (except Trig model)

  • Page 90: Appendix B - Preference Settings

    APPENDIX B — PREFERENCE SETTINGS The Construction Master Pro calculators have Preference Settings that allow you to customize or set desired dimensional formats and calculations. The options vary per model. 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 on the previous page): PREFERENCE...
  • Page 91 (Cont’d) PREFERENCE OPTIONS 3) Volume Display Format – *Standard (if units entered are the same—e.g., ft x ft x ft—the answer will remain in this format (cu. ft), but if units entered are different—e.g., feet x feet x inches—vol. answer will always be dis- played in cubic yards) –...

  • Page 92: How To Set Preferences

    (Cont’d) PREFERENCE OPTIONS 8) Exponent Off or On – *Off (Exponential Mode is Off; turns on Auto-ranging; i.e., if display can’t show seven digits, will display in next largest unit). – On (Exponential Mode is On) 9) Meter Linear Display –...

  • Page 93: Accessing Preference Settings

    Accessing Preference Settings KEYSTROKE DISPLAY To Set “Fractional Resolution”: Ç ß (Prefs) (1st press of ß ) FRAC 0-1/16 INCH + (plus sign) FRAC 0-1/32 INCH FRAC 0-1/64 INCH FRAC 0-1/2 INCH FRAC 0-1/4 INCH FRAC 0-1/8 INCH To Set “Area” Answer Format: ß...
  • Page 94 (Cont’d) KEYSTROKE DISPLAY To Set “Meter” Linear Decimal Format: ß (9th press of ß ) METR 0.000 + (plus sign) METR FLOAT To Set “Number of Decimal Places for Degree Displays”: ß (10th press of ß ) DEG 0.00° + (plus sign) DEG FLOAT Note: Press o at any time to exit the Preference Mode.

  • Page 95: Appendix C - Care Instructions

    APPENDIX C — CARE INSTRUCTIONS Please follow the guidelines listed in this section for proper care and operation of your calculator. Not following the instructions listed below may result in damage not covered by your warranty. Refer to the Repair and Return section on page 100 for more details. Do not expose calculator to temperatures outside the operating temperature range of 32ºF –...

  • Page 96: Appendix D - Important Notes For Owners Of Previous Construction Masters

    APPENDIX D — IMPORTANT NOTES FOR OWNERS OF PREVIOUS CONSTRUCTION MASTERS If you are an owner of a previous Construction Master calculator, the following list will help you compare several new or enhanced features available on selected Construction Master Pro calculators. NEW/ENHANCED FUNCTION DESCRIPTION Arched Rake Walls...

  • Page 97: Appendix E - Accuracy/Errors, Auto Shut-Off, Batteries, Reset

    APPENDIX E — ACCURACY/ERRORS, AUTO SHUT-OFF, BATTERIES, RESET ACCURACY/ERRORS Accuracy/Display Capacity — Your calculator has a twelve-digit display made up of eight digits (normal display) and four fractional digits. You may enter or calculate values up to 19,999,999.99. Each calculation is carried out internally to ten digits. Errors —...

  • Page 98: Batteries

    Note: Please use caution when disposing of your old battery, as it contains hazardous chemicals. Replacement batteries are available at most discount or electronics stores. You may also call Calculated Industries at 1-775-885-4975. Battery Replacement Instructions • The Hand-held Models —...

  • Page 99: Appendix F - Area/Volume Formulas

    APPENDIX F — AREA/VOLUME FORMULAS AREA FORMULAS 98 — C ® ONSTRUCTION ASTER ESKTOP...

  • Page 100: Surface Area/Volume Formulas

    SURFACE AREA/VOLUME FORMULAS ’ — 99 UIDE...

  • Page 101: Repair And Return

    WARRANTY, REPAIR AND RETURN INFORMATION Return Guidelines 1. Please read the Warranty in this User's Guide to determine if your Calculated Industries calculator, measuring device or elec- tronic tool remains under warranty before calling or returning any device for evaluation or repairs.

  • Page 102: Warranty

    SUMED TO BE DAMAGES RESULTING FROM MISUSE OR ABUSE. To obtain warranty service in the U.S., ship the product postage paid to Calculated Industries (address listed on the last page). Please provide an explanation of the service requirement, your name, address, day phone number and dated proof of purchase (typically a sales receipt).
  • Page 103 Disclaimer CI MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESS OR IMPLIED, WITH RESPECT TO THE PRODUCT’S QUALITY, PERFOR- MANCE, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PUR- POSE. AS A RESULT, THIS PRODUCT, INCLUDING BUT NOT LIMITED TO, KEYSTROKE PROCEDURES, MATHEMATICAL ACCURACY AND PREPROGRAMMED MATERIAL, IS SOLD “AS IS,”...
  • Page 104 This equipment has been certified to comply with the limits for a Class B calculating device, pursuant to Subpart J of Part 15 of FCC rules. Legal Notes Software copyrighted and licensed to Calculated Industries by Construction Master Technologies, LLC, 2004. User’s Guide copyrighted by Calculated Industries, Inc., 2004.

  • Page 105: Index

    INDEX Accuracy/Errors, 96 Adding Linear Measurements, 37 Angle – Rise and Hypotenuse Known , 87 Angle and Diagonal (Hypotenuse), 65 Arc Length, 47, 48 Arched Windows, 50 Area and Volume Keys, 11 Area Calculations, 39 Area, Rectangular, 39 Area, Square, 39 Area/Volume, 99 Auto Shut-Off, 96 Baluster Spacing, 83...
  • Page 106 Converting Tangent/Pitch to Angle, 87 Cutting Boards, 37 Cylinder, Volume, 41 Default Settings, 88 Degrees:Minutes:Seconds, Converting, 84 Dimensional Measurement Unit Keys, 10 Dimensions (Linear), Entering, 25 Dimensions (Square/Cubic), Entering, 25 Dimensions, Adding, 32 Dimensions, Dividing, 32 Dimensions, Multiplying, 32 Dimensions, Subtracting, 32 Drywall, 58 Drywall Keys (Not Available on Trig Model #4080), 16 Drywall Sheets, Number of (For a Given Area), 58...
  • Page 107 Stairs – Given Only the Run , 80 Stairs – Given Rise and Run , 81 Stairs – Given Rise and Run, Using “Riser Limited” Function for Code Restrictions , 82 Studs, Number of, 84 Time Calculations Using D:M:S, 84 Trigonometric Keys (Trig #4080 and Desktop #44080 Models only), 23 Volume Calculations, 40 Volume, Concrete Columns , 53...
  • Page 108 Designed in the United States of America Printed in China 2/04 4065UG-E-B...

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