Calculated Industries 4225 Pocket Reference Manual

Calculated Industries 4225 Pocket Reference Manual

Advanced feet-inch-fraction calculator

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C
M
ONSTRUCTION
ASTER
®
C
C
P
ONCRETE
ALC
RO
ADVANCED FEET-INCH-FRACTION CALCULATOR
Model 4225
Pocket Reference Guide
Direction
This
Insert

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Summary of Contents for Calculated Industries 4225

  • Page 1 ONSTRUCTION ASTER ® ™ ONCRETE ADVANCED FEET-INCH-FRACTION CALCULATOR Model 4225 Pocket Reference Guide Direction This Insert...
  • Page 2 ConcreteCalc Pro adds even more power to the already powerful Construction Master line-up. Like earlier models, this calculator is so simple to use, even the novice user can easily solve dimension-related problems. • Solve Dimensional Math with Ease •...
  • Page 3: Table Of Contents

    TABLE OF CONTENTS GETTING STARTED ...1 Key Definitions...1 Preference Settings ...11 Entering Dimensions ...13 Conversions...14 Basic Math Operations ...16 Percentage Calculations...17 Memory Operation...18 Paperless Tape ...19 USING THE CONCRETECALC PRO ...20 Length, Width, and Height Keys...20 Circle Calculations...23 Squaring-Up a Concrete Slab ...26 Calculating Rebar ...27 Calculating Loads ...29 Blocks and Bricks ...30...
  • Page 4: Getting Started

    GETTING STARTED KEY DEFINITIONS Basic Function Keys + – x ÷ = 0 – 9 and • Ç ® OCKET Arithmetic operation keys. Four-function (+, –, x, ÷) percent key. Keys used for entering numbers. Off Key — Turns all power off, clearing all non-perma- nent registers.
  • Page 5 Fractions. Fractions can be entered as proper (1/2, 1/8, 1/16) or improper (3/2, 9/8). If the denomina- tor (bottom) is not entered, the calculator's fractional accuracy setting is auto- matically used. Meters Key — Enters or converts to Meters.
  • Page 6 (Cont’d) Ç 9 Ç 2 Length, Width and Height Keys Arc/Circle Keys ç Ç A Ç W Ç h OCKET Millimeters — Enters or converts to Millimeters. Acres — Enters or con- verts to Acres. Enters Length for calculation of Area or Volume. Enters Width and calculates Area, Square-up and perimeter.
  • Page 7 Construction Project Keys Ç r OCKET 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...
  • Page 8 Ç Ç 5 OCKET 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. Load Size — Stores load size.
  • Page 9 Note: For bricks, you may also enter a brick size using T B. For example, when building with standard “face” bricks, store a brick size of 21 square Inches (e.g., 2 1 i i T B) or store 32 square Inches (e.g., 3 2 i i T B) for “paver”...
  • Page 10 Ç l OCKET Footing — Finds quantity of concrete, based on entered wall Length and stored footing Area. Footing Area — Stores footing Area. Footing Area must be entered as a square value (e.g., 2 6 4 i i T F).The default footing is 264 square Inches.
  • Page 11 Stair Layout Key OCKET Given Height and/or Length and stored variables, calculates or displays: Press Result Riser Height Number of Risers (RSRS) Riser Overage/ Underage Tread Width Number of Treads (TRDS) Tread Overage/ Underage Stairwell Opening (OPEN) Stringer Length (STRG) Angle of Incline Stored or Calculated (RUN)
  • Page 12 (Cont’d) Ç s STAIR DEFAULT VALUES • 7-1/2” Desired Riser Height • 10” Desired Tread Width • 10” Floor Thickness • 6’8” Headroom Customizable Stair Settings Ç T TSets Headroom. Miscellaneous Functions ® = Ç T Ç ÷ Ç x OCKET Riser Limited —...
  • Page 13 Ç – Ç + Ç • Ç % Ç a Ç / Ç 0 Note: After entering a value and pressing T 0, continue pressing the 0 digit key until you’ve reached the desired Weight per Volume format. To recall your setting, press ® 0. Ç...
  • Page 14: Preference Settings

    PREFERENCE SETTINGS Press Ç, then T, then keep pressing T to toggle through the main settings. Press the + key to advance within sub- setting. Use the – key to back up. Press any key to exit Preferences. PRESS Ç AND: First press of T: Second press Area Displays:...
  • Page 15 (Cont’d) PRESS: Fourth press of T: –* *Press + to increment or – to decrement by one inch. Fifth press of T: Sixth press of T: Seventh press Decimal Degree Displays: of T: Eighth press of T: Note: Press o at anytime to exit the Preference Settings.
  • Page 16: Entering Dimensions

    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). Note: If a denominator is not entered, the frac- tional setting value is used.
  • Page 17: Conversions

    CONVERSIONS Linear Conversions Convert 10 Feet 6 Inches to other dimen- sions, including Metric: KEYSTROKE 1 0 f 6 i Ç f* Ç i* Ç y Ç m Ç 9 Ç 7 *Repeated presses of f or i will toggle between Feet-Inch-Fractions and Decimal Feet or Inches.
  • Page 18 Ç 4 (lbs) Ç 1 (kg) Ç 3 (met tons) Weight per Volume Conversions Your calculator has the capability of con- verting between Weight and Volume. The Weight/Volume ratio is permanently stored by entering the value and pressing 0. The default value is 1.5 Tons per cubic Yard.
  • Page 19: Basic Math Operations

    (+, –, x, ÷), the second value and then the Equals sign (=). This feature also makes the calculator simple to use for dimensional applications: Adding and Subtracting Strings of Dimensions Add the following measurements: •...
  • Page 20: Percentage Calculations

    Dividing Dimensions Divide 30 Feet 4 Inches by 7 Inches: KEYSTROKE 3 0 f 4 i ÷ 7 i = Divide 20 Feet 3 Inches by 9: KEYSTROKE 2 0 f 3 i ÷ 9 = 2 PERCENTAGE CALCULATIONS The % key can be used for finding a given percent of a number or for working add-on, discount or division percentage calcula- tions.
  • Page 21: Memory Operation

    Recall total in Memory ® μ Display/Clear Memory ® ® Clear Memory Memory is semi-permanent, clearing only when you: 1) turn off the calculator; 2) press ® ®; 3) press Ç ®; 4) press Ç x (Clear All). When memory is recalled (® μ), con- secutive presses of μ...
  • Page 22: Paperless Tape

    PAPERLESS TAPE The Paperless Tape allows you to display and review the last 20 entries of a calcula- tion. ® = accesses the tape mode and + or – scrolls forward or backward through the entries. Note: The Paperless Tape is cleared each time o is pressed twice, the unit is shut off, or a Clear All is performed.
  • Page 23: Using The Concretecalc Pro

    USING CONCRETECALC PRO LENGTH, WIDTH, AND HEIGHT KEYS Using the Multi-Function W Key to find Area, Square-Up, and Perimeter Find the Area, square-up and perimeter of a room measuring 15’ x 20’. KEYSTROKE 1 5 f l 2 0 f W Using the Multi-Function h Key to Find Volume, Wall Area and Room Area Find the Volume, wall Area and total...
  • Page 24 Volume of a Concrete Slab Calculate the cubic Yards of concrete required to pour a slab that measures: 45 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 5 i l...
  • Page 25 What is the total cost of the concrete if it is selling for $55 per cubic Yard? KEYSTROKE 1. Clear calculator: 2. Find Area “A” and add to Memory: 3 8 f 2 i – 4 f 2 i = l 2 7 f W μ...
  • Page 26: Circle Calculations

    CIRCLE CALCULATIONS Circumference and Area Find the Circumference and Area of a circle having a diameter of 10 Inches. KEYSTROKE 1. Clear calculator and enter diameter: 1 0 i ç 2. Find circle Area and Circumference: ç ç 3. Convert to decimal Inch: Ç...
  • Page 27 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 1. Find circle Area: 2 f 4 i ç ç...
  • Page 28 You want to calculate the Volume of a semi-circular pad with a diameter of 16 Feet and a thickness of 4 Inches. (Use the ç key to find circle Area). KEYSTROKE 1. Clear calculator: 2. Enter diameter: 1 6 f ç 3. Find circle Area: ç...
  • Page 29: Squaring-Up A Concrete Slab

    SQUARING-UP A CONCRETE SLAB “Square-up” a concrete slab measuring 45 Feet 6 Inches by 24 Feet 4 Inches. KEYSTROKE 1. Clear calculator: 2. Enter Length, Width and solve for diagonal Length (square-up): 4 5 f 6 i l 2 4 f 4 i W ß...
  • Page 30: Calculating Rebar

    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. 5), on-center spacing (18 Inches), and inset (3 Inches). Note: Overlap is not included in the calculation. *Any adjustments for on-center spacing should be made in the center.
  • Page 31 KEYSTROKE 1. Clear calculator: 2. Enter rebar size*: 3. Find rebar Weight per Foot: 4. Enter rebar spacing: 1 8 i Ç 5. Enter rebar inset: 3 i Ç r 6. Enter slab Length: 2 3 f l 7. Enter slab Width: 1 6 f W 8.
  • Page 32: Calculating Loads

    Rebar – Total Weight How many pounds of #5 Rebar are needed to layout 100 linear Feet of footings? KEYSTROKE 1. Clear calculator: 2. Enter rebar size: 3. Enter Length: 1 0 0 f r 4. Calculate Weight: CALCULATING LOADS...
  • Page 33: Blocks And Bricks

    8 Inches long. The wall is to be 4 Feet high. How many blocks are required to build this wall? KEYSTROKE 1. Clear calculator: 2. Enter block size: 8 i x 1 6 i = 3. Add both wall Lengths: 2 2 f + 1 5 f 8 i = 4.
  • Page 34: Polygon (Equal-Sided)

    How many standard bricks (2-1/4 x 8 Inch) are needed for a wall measuring 36 Feet 6 Inches long and 8 Feet high? KEYSTROKE 1. Clear calculator: 2. Enter brick Area: 2 i 1 / 4 x 8 i = 3. Multiply wall Length times Height:...
  • Page 35: Concrete Footing

    Find the number of cubic Yards of concrete required for a (16 Inch x 8 Inch) footing that measures 232 Feet 6 Inches in length. KEYSTROKE 1. Clear calculator: 2. Enter footing Area: 8 i x 1 6 i = 3. Enter Length to find Volume: 2 3 2 f 6 i F Concrete Footings —...
  • Page 36: Finding Weight Per Volume

    Foot high by 16 Foot long by 8 Inch thick concrete tilt–up wall. The unit Weight is 1.5 Tons per cubic Yard of concrete. KEYSTROKE 1. Clear calculator: 2. Store unit Weight: 1 • 5 T0 3. Enter Height, Length and thickness:...
  • Page 37: Calculating Drop

    What if the drop is 1/4 Inch per Foot or .375 Inch per Foot? KEYSTROKE 1. Clear calculator: 2. Enter total Length of wall: 1 4 f l 3. Enter 1/8 Inch drop per Foot and find...
  • Page 38 What is the total (accu- mulated) drop Depth at the end of all four sections? KEYSTROKE 1. Clear calculator: 2. Enter wall section Length: 1 5 f 5 i l 3. Enter drop per Foot to find the drop per...
  • Page 39: Stair Calculations

    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. — 36 OCKET EFERENCE UIDE...
  • Page 40 Stairs — Given Rise and Run You’re going to build a stairway that has a floor-to-floor Height of 10 Feet 1 Inch, a run of 12 Feet 5 Inches, and a desired riser Height of 7-1/2 Inches (default). Find the stair values: KEYSTROKE 1.
  • Page 41 Stairs — Given Rise Only You’re building a stairway with a total rise of 9 Feet 11 Inches. Using the default riser Height of 7-1/2 Inches and tread Width of 10 Inches, find the stair values: KEYSTROKE 1. Enter known rise: 9 f 1 1 i h 2.
  • Page 42 Stairs — Riser Limited Function Calculate stairs using the Riser Limited function, if you must limit the riser Height to 7-1/2 Inches: KEYSTROKE 1. Enter rise and run: 1 0 f 1 i h 1 2 f 5 i l 2.
  • Page 43: Appendix

    Errors – When an incorrect entry is made, or the answer is beyond the range of the calculator, it will display the word “ERROR.” To clear an error condition you must press the o button once. At this point you must determine what caused the error and re-key the problem.
  • Page 44: Battery And Auto Shut-Off

    (e.g., 20 million mm – 2.00000 mm). BATTERY AND AUTO SHUT-OFF 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.
  • Page 45: Default Settings

    DEFAULT SETTINGS After a Clear All (Ç x), your calculator will return to the following settings: STORED VALUES Desired Riser Height Desired Tread Width Floor Height Rebar Spacing Rebar Inset Rebar Size Load Size Bag Size Weight per Volume Block Area...
  • Page 46: Area Formulas

    AREA FORMULAS — 43 OCKET EFERENCE UIDE...
  • Page 47: Surface Area And Volume Formulas

    SURFACE AREA AND VOLUME FORMULAS — 44 OCKET EFERENCE UIDE...
  • Page 48: Repair And Return

    WARRANTY, REPAIR AND RETURN INFORMATION Return Guidelines 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. If your product won't turn on, check the battery as outlined in the User's Guide.
  • Page 49: Warranty

    Non-warranty repair covers service beyond the warranty period, or service requested due to damage resulting from misuse or abuse. Contact Calculated Industries at the number listed on the last page of this guide to obtain current product repair information and charges. Repairs are guaranteed for 90 days.
  • Page 50 Repair Service – Outside the U.S.A. To obtain warranty or non-warranty repair service 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.
  • Page 51: Looking For New Ideas

    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.
  • Page 52 Construction Master Technologies, LLC, 2007. Pocket Reference Guide copyrighted by Calculated Industries, Inc. © 2007. ConcreteCalc™ is a trademark, and Construction Master® and Calculated Industries® are registered trademarks of Calculated Industries, Inc. ALL RIGHTS RESERVED CALCULATED INDUSTRIES® 4840 Hytech Drive Carson City, NV 89706 U.S.A.

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