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 .
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”...
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 •...
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...
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: •...
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 •...
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...
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"...
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 .
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...
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...
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 .
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 .
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 .
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 .
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...
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 .
Need help?
Do you have a question about the CALC-1500 and is the answer not in the manual?
Questions and answers