Calculated Industries ConcreteCalc Pro 4225 Pocket Reference Manual
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Calculated Industries ConcreteCalc Pro 4225 Pocket Reference Manual

Advanced yard, feet-inch-fraction concrete construction-math calculator
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Summary of Contents for Calculated Industries ConcreteCalc Pro 4225

  • Page 2 ConcreteCalc™ Pro Designed for today’s concrete professional, the ConcreteCalc Pro adds even more power to the already powerful Construction Master line of construction-math calculators. This calculator is so simple to use, even the novice user can easily solve dimension-related problems. •...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS GETTING STARTED .........1 Key Definitions ........1 Preference Settings ......10 Entering Dimensions ......12 Conversions .........12 Basic Math Operations ......14 Percentage Calculations ......15 Memory Operation .......16 Paperless Tape ........17 USING THE CONCRETECALC PRO ..18 Length, Width, and Height Keys ..18 Circle Calculations .......20 Squaring-Up a Concrete Slab .....23 Calculating Rebar ........24...

  • Page 4: Getting Started

    GETTING STARTED KEY DEFINITIONS Basic Function Keys Arithmetic operation + - x z = keys. Percent Key – Used to find a given percentage of a number. 0 - 9 and . Keys used for entering numbers. Off Key – Turns all power off, clearing all non- permanent registers.
  • Page 5 or decimal numbers. Also used with the i and / keys for entering Feet-Inch values (e.g., 6 f 9 i 1 / 2). Repeated presses during conversions toggle between Fractional and Decimal Feet. Inch Key – Enters or converts to Inches. Entry can be whole or decimal numbers.
  • Page 6 (Cont’ d ) Millimeters – Enters or converts to Millimeters. Acres – Enters or converts to Acres. Length, Width and Height Keys Enters Length for calculation of Area or Volume. Enters Width and calculates Area, Square- up and perimeter. Enters Height and calculates Volume, wall Area and total room Area.
  • Page 7 Construction Project Keys Rebar Key — Given stored or entered rebar inset, rebar size, rebar on-center spacing and entered Length and Width values, calculates the following: Press Result Total Feet Total Weight Rebar Size Rebar On-Center Rebar Inset Stored Length Stored Width If you already know your total linear Feet of rebar, you can enter the Length to calculate the total Weight based...
  • Page 8 exceeding 6 inches in diameter (e.g., 5 / 8 r for 5/8 inch bar size). Default is number 5 (5/8″). Spacing — Stores rebar on-center spacing. Default is 18″. Loads Key — Calculates number of loads for a given Volume or Length, Width, and Height (Depth) values and stored load size.
  • Page 9 to fill a given Area. This key can also be used for calculating the number of “face” or “paver” bricks by storing a brick size (see Block Size). Block Size — Stores the block size. Block size must be entered as a linear value or a square value.
  • Page 10 Board Feet — Enters or converts cubic values to board feet. Column/Cone — Calculates the Volume and surface Area of a column and/or cone. Footing — Finds quantity of concrete, based on entered wall Length and stored footing Area. Footing Area — Stores footing Area.
  • Page 11 Tread Width (T-WD) Number of Treads (TRDS) Tread Overage/ Underage (T+/-) Stairwell Opening (OPEN) Stringer Length (STRG) Angle of Incline (INCL) 10 Stored or Calculated Run (RUN) 11 Stored or Calculated Rise (RISE) 12 Stored Desired Riser Height (R-HT) 13 Stored Desired Tread Width (T-WD) 14 Stored Headroom (HDRM)
  • Page 12 Customizable Stair Settings Stores Desired Riser Height. Stores Desired Tread Width. Stores Floor Thickness. c ; ; Sets Headroom. Miscellaneous Functions Backspace Key Paperless Tape Preference Settings (1/x) Reciprocal — Finds the reciprocal of a number (e.g., 8 c z 0.125).

  • Page 13: Preference Settings

    Note: After entering a value and pressing ; 0, continue pressing the 0 digit key until you’ve reached the desired Weight per Volume format. To recall your setting, press s 0. Tons — Enters or converts to Tons. Pounds — Enters or converts to Pounds.
  • Page 14 --1/8 --1/16 (repeats options) Second press Area Displays: --Std. of ;: --0. SQ FEET --0. SQ YD --0. SQ M --Std. (repeats options) Third press Volume Displays: --Std. of ;: -- 0. CU YD -- 0. CU FEET -- 0. CU M --Std.

  • Page 15: Entering Dimensions

    --Std. (repeats options) Note: Press o at any time to exit the Preference Settings. ENTERING DIMENSIONS Linear Dimensions When entering feet-inch values, enter dimensions from largest to smallest — feet before inches, inches before fractions. Enter fractions by entering the numerator (top number), pressing / (Fraction Bar key) and then the denominator (bottom number).
  • Page 16 KEYSTROKE DISPLAY 10 FEET 6 INCH 1 0 f 6 i 10.5 FEET 126. INCH 3.5 YD 3.200 M 3200.4 MM 320.04 MM *Repeated presses of f or i will toggle between Feet-Inch-Fractions and Decimal Feet or Inches. Square and Cubic Conversions Convert 14 square feet to square yards: KEYSTROKE DISPLAY...

  • Page 17: Basic Math Operations

    per cubic yard, then convert to other Weights: KEYSTROKE DISPLAY 1 . 7 5 ; 0 STORED 1.75 Ton Per CU YD 15 CU YD 1 5 y y y 26.25 Ton c 6 (tons) c 4 (lbs) 52500. LB 23813.6 kG c 1 (kg) 23.8136 MET Ton...

  • Page 18: Percentage Calculations

    Then subtract 2-1/8 inches. KEYSTROKE DISPLAY 6 f 2 i 1 / 2 + 1 1 f 5 i 1 / 4 + 19 FEET 2 INCH 1 8 . 2 5 i = - 2 i 1 / 8 = 18 FEET 11-7/8 INCH Multiplying Dimensions Multiply 5 feet 3 inches by 11 Feet 6-1/2 inches: KEYSTROKE...

  • Page 19: Memory Operation

    150.7 SQ FEET 1 0 % Take 20% from 552 feet 6 inches: KEYSTROKE DISPLAY 5 5 2 f 6 i - 442 FEET 0 INCH 2 0 % Divide 350 cubic yards by 80%: KEYSTROKE DISPLAY 3 5 0 y y y z 8 0 % 437.5 CU YD MEMORY OPERATION Whenever the n key is pressed, the...

  • Page 20: Paperless Tape

    M+ 255. M 2 5 5 n M- 745. M 7 4 5 c n TTL STORED - 135. M AVG - 45. M CNT 3. M M+ -135. PAPERLESS TAPE The Paperless Tape allows you to display and review the last 20 entries of a calculation.

  • Page 21: Using The Concretecalc Pro

    22 FEET 0 INCH 24 FEET 0 INCH 2 f = *Displays total before exiting. USING THE CONCRETECALC PRO LENGTH, WIDTH AND HEIGHT KEYS Using the Multi-Function ] Key to find Area, Square-Up and Perimeter Find the area, square-up and perimeter of a room measuring 15′...
  • Page 22 feet 5 inches long x 13 feet 6 inches wide x 5 inches deep. If concrete is $65 per cubic yard, what will it cost? KEYSTROKE DISPLAY 4 5 f LNTH 45 FEET 5 INCH 5 i l 1 3 f WDTH 13 FEET 6 INCH 6 i ] VOL 9.461806 CU YD...

  • Page 23: Circle Calculations

    it is selling for $55 per cubic yard? KEYSTROKE DISPLAY 1. Clear calculator: 2. Find area “A” and add to Memory: 3 8 f 2 i - LNTH 34 FEET 0 INCH 2 i = l WDTH 27 FEET 0 INCH 2 7 f ] AREA 918.
  • Page 24 2. Find circle area and circumference: AREA 78.53982 SQ INCH CIRC 31-7/16 INCH 3. Convert to decimal inches: 31.41593 INCH Arc Lengths Find the arc length of an 85° portion of a circle with a 5 foot diameter. KEYSTROKE DISPLAY 1.
  • Page 25 KEYSTROKE DISPLAY 1. Find circle Area: DIA 2 FEET 4 INCH 2 f 4 i e AREA 4.276057 SQ FEET 2. Enter Height and find Volume: 4 f 6 i h HGHT 4 FEET 6 INCH COL 19.24226 CU FEET Volume of a Cone Calculate the volume of a cone with a diameter of 3 feet 6 inches and a height of...

  • Page 26: Squaring-Up A Concrete Slab

    AREA 201.0619 SQ FEET 4. Divide by 2 for semi-circle: 100.531 SQ FEET z 2 = 5. Multiply by thickness to find cubic yards: 1.241123 CU YD x 4 i = Concrete Columns Find the total cubic yards and tons of concrete (using 1.5 tons per cubic yard) required for 3 columns, each with a diameter of 5 feet 2-3/4 inches and a height of 10 feet:...

  • Page 27: Calculating Rebar

    2. Enter length, width and solve for diagonal length (square-up): 4 5 f 6 i l LNTH 45 FEET 6 INCH 2 4 f 4 i ] WDTH 24 FEET 4 INCH SQUP 51 FEET 7-3/16 INCH CALCULATING REBAR Rebar – Total Linear Feet Find the total linear feet of rebar for a 23 feet x 16 feet concrete slab, using default values for rebar size (No.
  • Page 28 KEYSTROKE DISPLAY 1. Clear calculator: 2. Enter rebar size*: No 5 STORED 0.625 INCH 3. Find rebar weight per foot: No 5 1.04188 LB Per FEET 4. Enter rebar spacing: R-oc STORED 18 1 8 i c ' INCH 5. Enter rebar inset: R-oc STORED 3 INCH 3 i c r 6.

  • Page 29: Calculating Loads

    1. Clear calculator: 2. Enter rebar size: No 5 STORED 0.625 INCH 3. Enter length: 1 0 0 f r RBAR 100 FEET 0 INCH 4. Calculate weight: RBAR 104.188 LB CALCULATING LOADS How many 8 cubic yard truck loads would be needed to haul the dirt from an excavation measuring 108′...

  • Page 30: Polygon (Equal-Sided)

    long. The wall is to be 4 feet high. How many blocks are required to build this wall? KEYSTROKE DISPLAY 1. Clear calculator: 2. Enter block size: 8 i x 1 6 i = ; b B-AR 128. SQ INCH 3.

  • Page 31: Concrete Footing

    length, perimeter and area of a pentagon- shaped patio to be paved with bricks. The radius is 7 feet 5 inches and the number of sides is five: KEYSTROKE DISPLAY 1. Clear calculator: 2. Enter radius: 7 f 5 i c k RAD 7 FEET 5 INCH 3.

  • Page 32: Finding Weight Per Volume

    following continuous lengths of footing: 15 feet, 18 feet, 24 feet and 33 feet. What is the total volume of concrete you’ll need? KEYSTROKE DISPLAY 1. Clear calculator: 2. Enter footing area: 2 6 4 i i ; g F-AR STORED 264. SQ INCH 3.

  • Page 33: Calculating Drop

    How many 80 lb. bags of concrete would it take for a 4′ x 8′ slab 4″ deep? Use default of 0.666667 cubic feet per bag. KEYSTROKE DISPLAY 1. Multiply length times width times depth: 4 f x 8 f x 4 i = 0.395062 CU YD 2.Find number of bags: BAGS 16.
  • Page 34 1 / 4 d d DROP 0 FEET 3-1/2 INCH 5. Enter .375 inch drop per foot and find amount of drop: . 3 7 5 i d d DROP 0 FEET 5-1/4 INCH 6. Convert to decimal inches: 5.25 INCH 7.

  • Page 35: Stair Calculations

    Note: Successive presses of d will continue to add the drop amount of 3-7/8 Inches to the prior wall section’s drop, for an accumulated drop total. STAIR CALCULATIONS The ConcreteCalc Pro can calculate the values used in stair building, given entered values for floor-to-floor rise h or run of treads l, based on desired riser height and tread width.
  • Page 36 2. Recall stored 7-1/2 inch desired riser height, then find the stair values: R-HT STORED 7-1/2 INCH R-HT ! 7-9/16 INCH* RSRS 16. R+/- 0 INCH T-WD ! 9-5/16 INCH* TRDS 15. T+/- 0-1/16 INCH OPEN 9 FEET 10-1/4 INCH STRG 15 FEET 7-5/16 INCH INCL 37.27°...
  • Page 37 OPEN 10 FEET 1 INCH STRG 15 FEET 6-15/16 INCH INCL 36.64° To calculate stairs given run (length) only: If you have a value stored in height, it will be used in the stair calculation. You will need to clear the value by entering zero into height (e.g.

  • Page 38: Appendix

    APPENDIX ACCURACY/ERRORS Accuracy/Display Capacity – Your calculator has a twelve digit display. This is 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 twelve digits.

  • Page 39: Battery And Auto Shutoff

    BATTERY AND AUTO SHUTOFF Your calculator is powered by a single 3-Volt Lithium CR-2016 battery. This should last approximately 800 hours of actual use (1 year plus for most people). Should the display become very dim or erratic, replace the battery. WARNING: Please use caution when disposing of your old batteries as they contain hazardous chemicals.
  • Page 40 128 SQ INCH Block Area 16 INCH Block Length 264 SQ INCH Footing Area If you replace your battery 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 above): PREFERENCE SETTINGS DEFAULT VALUE...

  • Page 41: Area Formulas

    AREA FORMULAS 4225 Pocket Reference Guide — 38...

  • Page 42: Surface Area And Volume Formulas

    SURFACE AREA AND VOLUME FORMULAS...

  • Page 43: Repair And Return

    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 product remains under warranty before calling or returning any device for evaluation or repairs. 2. If your product won’t turn on, check the battery as outlined in the User’s Guide.

  • Page 44: Warranty

    WARRANTY Warranty Repair Service – USA Calculated Industries (“CI”) warrants this product against defects in materials and workmanship for a period of one (1) year from the date of original consumer purchase in the U.S. If a defect exists during the warranty period, CI at its option will...
  • Page 45 for goods purchased outside the U.S., contact the dealer through which you initially purchased the product. If you cannot reasonably have the product repaired in your area, you may contact CI to obtain current product repair information and charges, including freight and duties. Disclaimer CI MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESS...
  • Page 46 Class B computing device, pursuant to Subpart J of Part 15 of FCC rules. Looking For New Ideas Calculated Industries, a leading manufacturer of special-function calculators and digital measuring instruments, is always looking for new product ideas in these areas.

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