Johnson CALC-1500 Operator's Manual
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Johnson CALC-1500 Operator's Manual

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CALC-1500
Construction Master
Calculator
Operator's Manual

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Summary of Contents for Johnson CALC-1500

  • Page 1 CALC-1500 Construction Master Calculator Operator's Manual...
  • Page 2 CONSTRUCTION MASTER CALCULATOR Key Features: • Pre-programmed right angle and stair calculations including pitch, rise and run • Accurate stair, rafter, roof and framing calculations • Easily calculate linear, area and volume • Durable protective case for construction environments • Complete rafter, circular, rake wall and board feet calculations...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Key Definitions/Functions .
  • Page 4 TABLE OF CONTENTS TABLE OF CONTENTS Entering Square and Cubic and Adding a Waste Allowance . . . . . . . . . . . . . . . . . . . . . . . . . 17 Weight Conversions .
  • Page 5 TABLE OF CONTENTS APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Setting Fractional Resolution .

  • Page 6: Getting Started

    . Recall Key: Used with other keys to recall stored values and settings . Memory Key: Adds the displayed value to Memory . Clears when the calculator is shut off . © 2022 Johnson Level & Tool — 1...

  • Page 7: Dimension Keys

    Fraction Bar Key: Used to enter Fractions . Fractions can be entered as proper (1/2, 1/8, 1/16) or improper (3/2, 9/8) . If the denominator (bottom) is not entered, the calculator's fractional accuracy setting is automatically used . © 2022 Johnson Level & Tool — 2...

  • Page 8: Arc/Circle Keys

    Arc: Calculates Arc Length or Degree based on entered Diameter and Arc Degree or Length (e . g . , if Arc Degree is entered, it will calculate Arc Length, and vice versa) . © 2022 Johnson Level & Tool — 3...

  • Page 9: Right Triangle/Roof Framing Keys

    Diagonal leg (Hypotenuse) of a Right Triangle . Typical applications are “squaring” slabs or finding common rafter lengths . Hip/V Hip/Valley Key: Calculates length of the Regular or Irregular Hip/Valley rafter . © 2022 Johnson Level & Tool — 4...
  • Page 10 Right Triangle values and the stored On-Center spacing . If a dimensional value is entered before pressing R/Wall that value is considered the base and will be added to the stud lengths . © 2022 Johnson Level & Tool — 5...

  • Page 11: Stair Layout Key

    Tread Overage/ Underage Stringer Length Angle of Incline Stored Run Stored Rise Stored Desired Riser Height Stored Desired Tread Width STAIR DEFAULT VALUES • 7-1/2" Desired Riser Height • 10" Desired Tread Width © 2022 Johnson Level & Tool — 6...

  • Page 12: Stair Settings

    Conv ÷ × Conv Clear All: Returns all stored values to the default settings . (Does not affect Preference Settings . ) – Conv (+/–) Toggle Conv Pi (π) 3 . 1 41593 © 2022 Johnson Level & Tool — 7...
  • Page 13 On-Center Spacing (o.c.): Stores a new on-center spacing (e . g . , Inch Conv ) . The value is used for jack and rake wall stud calculations . Default is 16" . © 2022 Johnson Level & Tool — 8...

  • Page 14: Paperless Tape Example

    01 6 FEET 0 INCH 02 + 5 FEET 0 INCH 03 + 4 FEET 0 INCH − 02 + 5 FEET 0 INCH TTL = 15 FEET 0 INCH Feet 25 FEET 0 INCH © 2022 Johnson Level & Tool — 9...

  • Page 15: Preference Setting

    – 0 CU YD – 0 CU FEET – 0 CU M – Std. (repeats options) Fourth press of Meter Linear Displays: – 0.000 M – FLOAt M (floating point) – 0.000 M (repeats options) © 2022 Johnson Level & Tool — 10...

  • Page 16: Entering Dimensions

    . Examples of how linear dimensions are entered (press after each entry): On/C DIMENSIONS KEYSTROKE 6 Yards Feet Inch 5 Feet 1-1/2 Inch 5 8 • 5 58.5 Meters © 2022 Johnson Level & Tool — 11...

  • Page 17: Square And Cubic Dimensions

    15 FEET 3-3/4 INCH Conv Feet 15.3125 FEET Convert 18 .25 Feet to Feet-Inches: KEYSTROKE DISPLAY On/C On/C 1 8 • 2 5 Feet 18.25 FEET Conv Feet 18 FEET 3 INCH © 2022 Johnson Level & Tool — 12...

  • Page 18: Square And Cubic Conversions

    × ÷ ), the second value and then the Equals – sign ( – × ÷ 1 . 5 This feature also makes the calculator simple to use for dimensional applications . © 2022 Johnson Level & Tool — 13...

  • Page 19: Examples

    6 Feet 2-1/2 Inches each? KEYSTROKE DISPLAY × Feet Inch 18 FEET 7-1/2 INCH Multiply 5 Feet 3 Inches by 11 Feet 6-1/2 Inches: KEYSTROKE DISPLAY Inch × Feet Feet Inch 60.59375 SQ FEET © 2022 Johnson Level & Tool — 14...

  • Page 20: Dividing Dimensions

    Add a 10% waste allowance to 2 .39 Cubic Yards: KEYSTROKE DISPLAY On/C On/C Yds Yds Yds = 2 • 3 9 2.629 CU YD What is 25% of $1,575? KEYSTROKE DISPLAY On/C On/C × 1 5 7 5 393.75 © 2022 Johnson Level & Tool — 15...

  • Page 21: Square Area

    Volume: KEYSTROKE DISPLAY On/C On/C × Feet Inch 20 FEET 6-1/2 INCH × Feet Inch 234.9453 SQ FEET Inch = 156.6302 CU FEET Convert to YD: Conv Yds 5 .801119 CU YD © 2022 Johnson Level & Tool — 16...

  • Page 22: Entering Square And Cubic And Adding A Waste Allowance

    * Calculator may not display Pounds upon first press of ; it depends on which unit was accessed last . Weight So press until LB (or desired unit) is displayed, Weight then convert . © 2022 Johnson Level & Tool — 17...

  • Page 23: Weight Per Volume

    Conv × ALL CLEARED (Clear stored Wt/Vol) * Calculator will present values in a different order based on previous computation; simply continue to press Weight key until desired value is displayed . © 2022 Johnson Level & Tool — 18...

  • Page 24: Using The Memory

    . Example: KEYSTROKE DISPLAY 3 5 5 M+ 355 2 5 5 M+ 255 7 4 5 Conv M+ M- 745 - 135 STORED AVG – 45 CNT 3 M+ – 135 © 2022 Johnson Level & Tool — 19...

  • Page 25: Board Feet And Cost

    1 . DIVIDE LENGTH BY SPACING: On/C On/C Feet Inch 15 FEET 3-3/4 INCH ÷ Inch = 11.48438 (11 studs) 2 . ADD ONE FOR THE END: 12.48438 (12 studs) Note: Also applies to trusses and joists © 2022 Johnson Level & Tool — 20...

  • Page 26: Baluster Spacing

    50-1=49** (49 balusters) * Desired spacing plus baluster width (4 Inches plus 1-1/2 Inch) ** 1 baluster is subtracted since we don’t want one on the very end of the handrail . © 2022 Johnson Level & Tool — 21...

  • Page 27: Circle Area And Circumference

    1 . ENTER CIRCLE DIAMETER AND ARC LENGTH: On/C On/C Feet Circ DIA 5 FEET 0 INCH Feet Inch 3 FEET 3 INCH 2 . FIND DEGREE OF ARC: Conv Circ ARC 74.48° © 2022 Johnson Level & Tool — 22...

  • Page 28: Concrete Volume For Driveway

    2 . FIND THE SURFACE AREA OF A CIRCLE: Circ AREA 30.27192 SQ FEET 3 . FIND TOTAL VOLUME: × Inch = Feet 345.6044 CU FEET Conv Yds 12.80016 CU YD × 64.00081 CU YD © 2022 Johnson Level & Tool — 23...

  • Page 29: Complex Concrete Volume

    . First, calculate the total Area (by dividing the drawing into three individual rectangles) and then determine the total Yards of concrete required for this job . 25'-0" 8'-6" 9'-0" © 2022 Johnson Level & Tool — 24...
  • Page 30 85.5 SQ FEET M+ 85.5 SQ FEET 4 . RECALL AND CLEAR TOTAL AREA STORED IN MEMORY: M+ 529.25 SQ FEET 5 . FIND TOTAL CUBIC YARDS: × Inch 6.125579 CU YD © 2022 Johnson Level & Tool — 25...

  • Page 31: Right Angle/Framing

    Right Triangles directly in Feet and Inches, Decimal Feet, Meters, etc . Any value of a Right Triangle can be found given two of the four variables: 1) Rise, 2) Run, 3) Diagonal or 4) Pitch © 2022 Johnson Level & Tool — 26...

  • Page 32: Squaring-Up A Foundation

    Find the % Grade, Pitch Ratio/Slope and Pitch in Inches if the roof angle is 25 .25°: KEYSTROKE DISPLAY On/C On/C 2 5 • 2 5 Pitch PTCH 25.25° Pitch GRD 47.16307 Pitch SLP 0.471631 Pitch PTCH 5 -11/16 INCH © 2022 Johnson Level & Tool — 27...

  • Page 33: Converting Slope

    14 FEET 0 INCH RUN 14 FEET 0 INCH Rise RISE 7 FEET 3 . FIND THE RISE: 4 . FIND THE LENGTH OF THE COMMON RAFTER: Diag DIAG 15 FEET 7-13/16 INCH © 2022 Johnson Level & Tool — 28...

  • Page 34: Regular Hip/Valley And Jack Rafters

    (Jack rafters at 16 Inch On-Center) KEYSTROKE DISPLAY 1 . FIND THE COMMON RAFTER LENGTH: On/C On/C Feet Run RUN 6 FEET 0 INCH Feet Pitch PTCH 9 INCH Diag (common) DIAG 7 FEET 6 INCH © 2022 Johnson Level & Tool — 29...
  • Page 35 On-Center (e . g . , 18 Inches) press Inch Conv Press to review stored value . This value will remain stored until you re-enter a new value or perform a Clear All ( Conv × © 2022 Johnson Level & Tool — 30...

  • Page 36: Irregular Hip/Valley

    IJ 5 9 FEET 4-1/2 INCH Continue pressing until last regular Jack or “0 . ” is Jack reached . * It is not necessary to keep pressing when Conv displaying the Irregular Jack sizes . © 2022 Johnson Level & Tool — 31...

  • Page 37: Rake-Wall - With Base

    Find each stud size in a Rake-Wall with a peak of 15 Feet 6 Inches at an 8/12 roof pitch, and a run length of 5 Feet . Use 16 Inches as your spacing (default): © 2022 Johnson Level & Tool — 32...
  • Page 38 BASE 11 FEET 10 3/4 INCH R/Wall RWOC 16 INCH R/Wall RW01 14 FEET 4 1/16 INCH R/Wall RW02 13 FEET 5 7/16 INCH R/Wall RW03 12 FEET 6 3/4 INCH R/Wall RW 33.69° © 2022 Johnson Level & Tool — 33...

  • Page 39: Stairs

    Riser Height of 7-1/2 Inches (default) . Find the stair values: KEYSTROKE DISPLAY 1 . ENTER RISE AND RUN: On/C On/C Feet Inch Rise RISE 10 FEET 1 INCH Feet Inch Run RUN 12 FEET 5 INCH © 2022 Johnson Level & Tool — 34...
  • Page 40 Stair STRG 15 FEET 7-1/4 INCH Stair INCL 37.28° in the display means the calculated Riser Height or Tread Width is greater than the stored desired Riser Height or Tread Width . © 2022 Johnson Level & Tool — 35...

  • Page 41: Stairs - Given Only The Floor-To-Floor Rise

    *Note: Run is calculated based on Tread values, as it was not entered . The Total Run of a stairway is equal to the width of each Tread multiplied by the number of Treads . © 2022 Johnson Level & Tool — 36...

  • Page 42: Appendix

    On/C On/C Note: Changing the Fractional Resolution on a displayed value does not alter your Permanent Fractional Resolution Setting . Pressing will return your calculator to the On/C permanently set fractional resolution . © 2022 Johnson Level & Tool — 37...

  • Page 43: Default Settings

    Standard * Pressing the Reset button located above the Pitch will also perform a Full Reset . AUTO-SHUT OFF Your calculator will shut itself off after about 8-12 minutes of inactivity . © 2022 Johnson Level & Tool — 38...

  • Page 44: Accuracy/Errors

    (instead of showing “ERROR”) — e . g . , 20,000,000 mm is shown as 20,000 M . Also applies to Inches, Feet and Yards . © 2022 Johnson Level & Tool — 39...

  • Page 45: Battery

    . RESET If your calculator should ever “lock up,” press Reset — a small hole located above the key — to perform a Pitch total reset . © 2022 Johnson Level & Tool — 40...

  • Page 46: Area And Volume Formulas

    AREA AND VOLUME FORMULAS AREA FORMULAS © 2022 Johnson Level & Tool — 41...

  • Page 47: Volume Formulas

    AREA AND VOLUME FORMULAS VOLUME FORMULAS © 2022 Johnson Level & Tool — 42...
  • Page 48 PRODUCT WARRANTY Johnson Level & Tool offers a one-year limited warranty on this product . You can obtain a copy of this warranty on our website or by contacting our customer service department . The limited warranty contains various limitations and exclusions .

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