Johnson Level & Tool CALC-1500 Instruction Manual

Building calculator
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CALC-1500
Building Calculator
Instruction Manual

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Summary of Contents for Johnson Level & Tool CALC-1500

  • Page 1 CALC-1500 Building Calculator Instruction Manual...
  • Page 2: Building Calculator

    Building Calculator Product 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 • Complete rafter, circular, rake wall and board feet calculations ©...
  • Page 3: Table Of Contents

    Table of Contents Building Calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Sample Project Calculations .
  • Page 4: Key Descriptions

    Key Descriptions CALCULATOR FUNCTION KEYS • Memory Key: Add the displayed value to the temporary Memory . The temporary Memory will clear when the • Off Key: Turns off the calculator . All temporary registers are calculator is shut off . cleared .
  • Page 5: Arc/Circle Keys

    RIGHT TRIANGLE/ROOF FRAMING KEYS Length Keys (continued) Pitch • Pitch Key: Use to enter or calculate the pitch (angle) of a roof • Millimeters Key: Enter or convert units to millimeters . When or other right angle . Pitch is the steepness of a slope over a entering values, press the mm key once for millimeters, twice length such as the amount of “rise”...
  • Page 6: Stair Layout Keys

    STAIR SETTINGS Right Triangle/Roof Framing Keys (continued) Ir/Jack Set “riser height” and “tread width” to any value by using the Jack following keys: • Jack Key: Calculate jack rafter lengths on the regular-pitched roof side . Riser Ht Conv Ir/Jack •...
  • Page 7: User Settings

    to reverse through the sub-settings . Press the On/C key to exit M-R/C Conv Preferences . See the chart below for a listing of User Settings • Memory Clear: Clear the temporary calculator Memory available . without changing the current display . Prefs Conv PRESS...
  • Page 8: Using The Memory

    USING THE MEMORY Store values in a temporary Memory by pressing M+ . Other Memory functions include: FUNCTION KEYSTROKES Add to Memory Subtract from Memory Conv M-R/C Recall Total in Memory M-R/C M-R/C Display/Clear Memory M-R/C Clear Memory Conv Memory is semi-permanent, clearing only when you: •...
  • Page 9: Basic Functions

    Basic Functions ENTERING DIMENSIONS ADDING AND SUBTRACTING DIMENSIONS Add the following measurements: Linear Dimensions • 6 feet 1-1/4 inches When entering feet-inch values, enter dimensions from largest • 14 feet 7-1/4 inches to smallest, feet, then inches, then fractions . Enter fractions by •...
  • Page 10: Dividing Dimensions

    DIVIDING DIMENSIONS CALCULATING SQUARE AREA Divide 17 Feet 7-3/4 inches into thirds (divide by 3): Calculate the area of a square room with sides measuring 17 feet 5-1/2 inches: KEYSTROKE DISPLAY KEYSTROKE DISPLAY On/C On/C On/C On/C Riser Ht Feet Riser Ht Riser Ht Feet...
  • Page 11: Adding A Waste Allowance To Squared And Cubic Units

    ADDING A WASTE ALLOWANCE TO SQUARED AND CONVERTING LENGTH MEASUREMENTS CUBIC UNITS Convert 12 feet 7 inches to other dimensions, including metric: KEYSTROKE DISPLAY Add a 12% waste allowance to 20 square feet: KEYSTROKE DISPLAY On/C On/C Riser Ht On/C On/C 12 FEET 7 INCH Feet Inch...
  • Page 12: Converting Area Measurement

    CONVERTING AREA MEASUREMENT Convert 72 square feet to square yards: KEYSTROKE DISPLAY On/C On/C Riser Ht 72 SQ FEET Feet Feet 8 SQ YD Convert 35 square yards to square feet: KEYSTROKE DISPLAY On/C On/C O . C . 35 SQ YD 315 SQ FEET Feet Convert 246 cubic feet to cubic yards:...
  • Page 13: Sample Project Calculations

    Sample Project Calculations BALUSTER SPACING Ir/Pitch Pitch Rise Diag Hip/V Ir/Jack Stair Circ Jack Bd Ft R/Wall 1 . 5 0 inch baluster width Baluster spacing = 4 . 0 0 inches, equally spaced BOARD FEET AND COST Find the total board feet for the following boards: 2x4x16, 2x10x18 and 2x12x20 .
  • Page 14: Arc Angle Or Degree

    ARC ANGLE OR DEGREE CONCRETE COLUMNS Calculate the arc angle (or degree of arc), given a 6-foot Calculate the cubic yards of concrete needed for four columns, diameter and an arc length of 4 feet 3 inches: each with a diameter of 5 feet 3-1/4 inches and a height of 10 feet 4 inches: 4' 3"...
  • Page 15: Complex Concrete Volume

    COMPLEX CONCRETE VOLUME RIGHT ANGLE/FRAMING You’re going to pour an odd-shaped patio 3-1/2 inches deep with The Pitch, Rise, Run, and Diag keys provide built-in solutions to the dimensions shown below . First, calculate the total area (by right triangles . The solutions are available in any of the linear dividing the drawing into three individual rectangles) and then dimensions offered on the calculator including feet and inches, determine the total yards of concrete required for this job .
  • Page 16: Pitch - Converting Roof Angle

    PITCH — CONVERTING ROOF ANGLE COMMON RAFTER LENGTH Calculate the % grade, pitch ratio/slope and pitch in inches if the Calculate the point-to-point length of the common rafter on a roof angle is 18 . 4 °: 7/12-pitched roof with a span of 27 feet: KEYSTROKE DISPLAY KEYSTROKE...
  • Page 17: Regular Hip/Valley And Jack Rafters

    REGULAR HIP/VALLEY AND JACK RAFTERS IRREGULAR HIP/VALLEY Calculate the common rafter length, irregular hip/valley and jack rafter lengths . The rafter has a 8/12 pitch and half of your overall Hip/Valley Rafter span is 12 feet 9 inches . The irregular pitch is 6/8 . Regular Side (Jack) KEYSTROKE...
  • Page 18: Rake-Wall - With Base

    RAKE-WALL — WITH BASE KEYSTROKE DISPLAY 4 . Find interior stud lengths: Calculate each stud length in a rake-wall with a peak of RWOC STORED 14 feet 9 inches at an 9/12 roof pitch, and a run length of R/Wall 16 INCH 4 feet 10 inches .
  • Page 19: Stairs

    STAIRS STAIRS — GIVEN ONLY THE FLOOR-TO-FLOOR RISE; ENTERING OTHER THAN 7-1/2 INCH Tread Width Actual Riser Height Desired Riser Height Rise Inclination Angle Calculate the stair dimensions if the floor-to-floor rise is 9 feet 11 inches, and the desired riser height is 7 inches: KEYSTROKE DISPLAY 1 .
  • Page 20: Appendix

    Appendix DEFAULT SETTINGS SETTING CUSTOM FRACTIONAL RESOLUTION Perform a Clear All ( Conv x ), to return the calculator to the Convert entered or calculated fractions to units other than the following default settings: calculator default of 1/16th . Fractional resolution of 1/16th is permanently set in the default settings .
  • Page 21: Display Capacity And Errors

    DISPLAY CAPACITY AND ERRORS REPLACING THE BATTERY Accuracy/Display Capacity — The calculator has a twelve- While the calculator is off, turn the calculator over to remove digit display made up of eight digits (normal display) and the battery holder near the top center of the unit . Remove the four fractional digits .
  • Page 22: Area And Volume

    Area and Volume AREA Square Circle Area = a x a Circumference = 2πr Area = πr Rectangle Octagon Area = l x w Area = (d/2) x 2 . 8 28 Triangle Ellipse Area = 1/2 x a x b Area = πab ©...
  • Page 23: Surface Area And Volume

    SURFACE AREA AND VOLUME Cube Sphere Surface Area = 6a Surface Area = 4πr Volume = a Volume = 4/3πr Rectangle Cylinder Surface Area = 2hw + 2hl + 2lw Volume = l x w x h Surface Area = 2πrh + 2πr Volume = πr Cone Surface Area = πr r...
  • Page 24: Product Warranty

    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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