Calculated Industries ConcreteCalc User manual

For Today’s Concrete Professional
User’s Guide
C ONSTRUCTION M ASTER
®
M–R/C
Tape
C ONCRETE C ALC
™
CALCULATED INDUSTRIES
®
AC
+ / –
π
Area
Wt/Vol
Ft-In
M–
Per
1/
x
xAreaArc
x
2
Size
2
÷
M+
8
3
0
456
79
Rcl
%•
1
=
+
+
On/C
–
Off
Conv
Inch
Feet
/
Yds
Cu Sq
Width Vol
Length
mm
√__
Sq–Up
Stair
Weight
m
Block
Circ
Height
Drop Ftg
FEET INCH
CONCRETECALC™

Introducing ConcreteCalc . . . . . . . . . . .3
Key Definitions . . . . . . . . . . . . . . . . . . .4
Operating Basics . . . . . . . . . . . . . . . .15
Linear Dimensions . . . . . . . . . . .15
Square and Cubic Dimensions . .16
Dimension Conversions . . . . . . .17
Math Operations . . . . . . . . . . . .20
Memory Operation . . . . . . . . . . .23
Fractional Settings . . . . . . . . . . .25
Paperless Tape Function . . . . . . .27
Using the ConcreteCalc . . . . . . . . . . . .29
Linear Division . . . . . . . . . . . . . .29
Linear Addition . . . . . . . . . . . . .31
Circle Calculations . . . . . . . . . . .32
Area Calculations . . . . . . . . . . . .33
Volume Calculations . . . . . . . . . .34
Square-up Concrete . . . . . . . . . .41
Blocks, Bricks, Walls & Footings .42
Computing Drop . . . . . . . . . . . .48
Stair Problems (Risers/Treads) . .50
Appendix A . . . . . . . . . . . . . . . . . . . .54
Accuracy/Display . . . . . . . . . . . .54
Error . . . . . . . . . . . . . . . . . . . . .54
Auto-Range . . . . . . . . . . . . . . . .54
Battery & Auto Shut-Off . . . . . . .55
Full Reset/All Clear . . . . . . . . . . .55
Default Settings . . . . . . . . . . . . .55
Surface Area and Volume Formulas .56
Area Formulas . . . . . . . . . . . . . .57
TABLE OF CONTENTS
2– ConcreteCalc™

Designed for today’s concrete profes-
sional, the all-new ConcreteCalc™ adds
even more power to the already pow-
erful Construction Master line-up. Like
earlier models, this calculator is so sim-
ple to use, even the novice user can
easily solve dimension-related prob-
lems. Features include:
wwSolve Dimensional Math with Ease
wwInstant Dimensional Conversions
wwEnglish/Metric Conversions
wwWeight/Volume Conversions
wwRectangular Area/Volume Calculations
wwInstant Block Quantity Solutions
wwInstant Footing Volume Calculations
wwInstant Square-Up (Diagonal) Solutions
wwDrop Distance Calculations
wwInstant Circular Area and Perimeter
wwInstant Arc Length Calculations
wwCalculate Stair Risers and Treads
wwMaterial Estimations
wwPaperless Tape
INTRODUCING
CONCRETECALC™
User’s Guide – 3

Basic Functions
[+] [–] [x] [÷] [=]
Arithmetic Operation Keys —Used to
perform arithmetic functions.
[%]
Percent — Four-function percent key.
[0] – [9] and [ • ]
Numeric Keys —Used to key numeric
values.
[Off]
Power Off — Turns all power off. Resets
the display and all non-permanent reg-
isters.
[On/C]
Power On/Clear — Turns on power.
Pressing once clears the last entry and
the display. Pressing twice in succes-
sion clears all temporary registers.
[Conv]
Convert —Used with the dimensional
keys to convert between dimensions.
Dimensions can only be converted with-
in the same convention (i.e., linear,
square or cubic). Also used to access spe-
cial functions when used in combination
with other keys as defined herein.
KEY DEFINITIONS
4– ConcreteCalc™

[ ]
Square Root —Used to find the square
root of a number. Note: Attempts to find
the square root of a linear or volume
dimension will cause an “Error”.
[Conv] [ ]
x2 — Finds the square of the displayed
value. Note: Attempts to find the square of
an area or volume dimension will cause an
“Error” .
[M+]
Memory Add —Adds the displayed num-
ber to the value stored within the semi-
permanent Memory.
[Conv] [M+]
Memory Minus —Subtracts the dis-
played value from Memory.
[Rcl]
Recall —Recalls values stored in any
register. [Rcl] [M+] displays the value in
Memory.
[Rcl] [Rcl]
Memory Display/Clear —Displays the
value in Memory and clears the register.
[Conv] [Rcl]
Memory Clear —Clears the Memory
without changing the current display.
User’s Guide – 5

Dimension Keys
[Yds]
Yards —This is an entry and conver-
sion key. The entry can be a whole
number or a decimal number. Used with
the [Conv] key converts any other dis-
played dimensioned number to yards.
[Feet]
This is an entry and conversion key.
The entry can be a whole number or
decimal number. This key can also be
used in conjunction with the [Inch] and
[/] keys for entering values in Feet-
Inch format. For example, 6 feet 9-1/2
inches is entered as follows:
6 [Feet] 9 [Inch] 1 [/] 2
Repeated presses of this key during
conversions will toggle between Feet-
Inch and Decimal Feet formats.
[Inch]
This is an entry and conversion key.
The entry can be in whole or decimal
numbers. This key can also be used in
conjunction with the [/] key for enter-
ing values in Fractional Inch format.
Repeated presses of this key during
conversions will toggle between Fractional
Inch and Decimal Inch formats.
6– ConcreteCalc™

[/]
Fraction Bar —This key is used to
enter fractions. Fractions can be
entered as proper (1 or less — 1/2, 1/8,
1/16) or improper (greater than 1 —
3/2, 65/64). For example, to enter 1/2,
the key sequence would be: 1 [/] 2. If
the denominator (the bottom number)
is not entered, then the set fractional
level (1/16, 1/2, etc.) is used. [Rcl] [/]
displays the current fractional setting.
[Cu]
Cubic —This key is used with a dimen-
sion key (feet, inches, yards, meters,
etc.) to identify a value as being a vol-
ume. Example: 5 [Cu] [Yds].
[Sq]
Square —This key is used with a
dimension key (feet, inches, yards,
meters, etc.) to identify a value as being
an area. Example: 10 [Sq] [Feet].
[m]
Meters —This is an entry and conver-
sion key used to enter decimal meters
or to convert decimal meters from some
other dimensional format (when used
in conjunction with the [Conv] key).
User’s Guide – 7

[mm]
Millimeters —This is an entry and con-
version key used to enter or to convert
to decimal millimeters (when used in
conjunction with the [Conv] key).
[Weight]
This key is used to convert a dimen-
sioned cubic value or volume, to a
weight value using the [Conv] key and
the stored Weight per Volume (see
below). For example, 5 [Cu] [Yds]
[Conv] [Weight] equals 7.5 tons, or 10
[Weight] (tons) [Conv] [Cu] [Yds] equals
6.666667 cubic yards. Repeated press-
es of this key, after a cubic entry or
conversion, will toggle between tons,
pounds and kilograms.
[Conv] [%]
Weight per Volume—Used to set the
Weight per Volume. Can be programmed
as Tons per Cubic Yard, Pounds per
Cubic Yard, or Kilograms per Cubic Meter.
Default is 1.5 Tons/Cu. Yd. To set a dif-
ferent weight per volume, for example, 2
Tons/Cu. Yd, press 2 [Conv] [%]. Value
will be permanently stored. To recall
stored value, press [Rcl] [%].
8– ConcreteCalc™

Area/Volume Keys
[Length]
Enters the value for Length in dimen-
sion problems (e.g., for calculating area
or volume). Note: This key is also used to
enter the length for “Square-ups” and the
“Run” for stair problems.
[Width]
Enters the value for Width in dimension
problems (e.g., calculating area or vol-
ume). Note: This key is also used to enter
the width for “Square-ups.”
[Height]
Enters the value for Height in dimen-
sion problems (e.g., for calculating vol-
ume). Note: This key is also used to enter
the “Rise” for stair problems.
[Vol]
Volume —Computes the volume
(Length x Width x Height) in Cubic
Yards based on entered Length, Width
and Height values. A second press will
display the area (in square feet) based
on entered Length and Width. Successive
presses will toggle the display between
the calculated area and volume.
[Conv] [Vol]
Area —Computes the area in Square
Feet based on entered Length and Width.
User’s Guide – 9

Square-Up & Drop Keys
[Sq-Up]
Square-up —Enters or computes the
“Square-Up” (or Diagonal) length based
on entered Length and Width values.
[Drop]
Computes the total drop (or fall) over
an entered Length, given an entered
percentage drop or inch drop per foot
value. Successive presses will act as a
“constant add,” for displaying succes-
sive drops.
Block/Footing Keys
[Block]
Number of Blocks —Computes the num-
ber of blocks or bricks needed after enter-
ing a wall area, or values entered in
Length and Height.
[Conv] [Block]
Block Size —Used to permanently set
the size of a single block or brick. The
default size is 128 square inches for an
8” x 16” block. To recall the stored
block area, press [Rcl] [Block].
[Ftg]
Footing —Used to compute concrete
volume of footings, walls, curbs, etc.
10 – ConcreteCalc™

given an entered cross-sectional footing
area (see [Conv] [Ftg]) and Length.
[Conv] [Ftg]
Cross-sectional Area —Used to perma-
nently set the cross-sectional area for
calculating footings. The default setting
for the cross-sectional area is 1.8 square
feet. To recall the stored cross-section-
al area, press [Rcl] [Ftg].
Stair & Circle Keys
[Stair]
A multi-function key that displays the fol-
lowing values when pressed repeatedly
(using Length and Height values):
# Presses Information Displayed
1 Number of Risers
2 Riser Height
3 Riser Overage/Underage
4 Number of Treads
5 Actual Tread Width
6 Tread Overage/Underage
7 Stringer Length
8 Inclination Angle
When the [Stair] key is preceded by a
linear or undimensioned entry, the
value will be permanently stored as the
User’s Guide – 11

“Desired Riser Height”. Undimensioned
values are assumed to be inches.
[Circ]
Circle —Based on an entered diameter,
repeated presses display the following cir-
cular values: 1) diameter, 2) area 3) cir-
cumference.
[Conv] [Circ]
Arc Length —Used to find the arc length
based on an entered diameter and angle.
For example: 1 [Inch] [Circ] 180 [Conv]
[Circ] would display an Arc length of 1-
9/16 inches for an entered diameter of 1
inch and a 180° angle.
Fractional Rounding Settings
[Conv] 1
Fraction set to 1/16
[Conv] 2
Fraction set to 1/2
[Conv] 3
Fraction set to 1/32
[Conv] 4
Fraction set to 1/4
[Conv] 6
Fraction set to 1/64
[Conv] 8
Fraction set to 1/8
12 – ConcreteCalc™

[Conv] 7
Fraction set to “Normal Mode” (reduces
to the lowest common denominator).
[Conv] 9
Fraction set to “Fixed Mode” (denomi-
nator value always fixed or remains the
same as fractional setting).
[Conv] [ / ]
Toggles the flashing fraction feature
on/off. The flashing denominator
reflects the current fractional setting.
Additional Functions
[Rcl] [ = ]
Paperless Tape —Accesses the paperless
tape mode.
[Conv] [ ÷ ]
Reciprocal —1/x function.
[Conv] [ x ]
All-Clear —Clears all values including
Memory. Resets all permanent registers to
default settings (weight per volume, block
area, footing cross-sectional area, stair
riser height and fraction set).
[Conv] [ + ]
Pi (π)—Constant = 3.141593.
User’s Guide – 13

[Conv] [ – ]
Positive/Negative Toggle — Toggles the
sign of the displayed value between
positive and negative.
[Conv] [ • ]
Per —Allows you to compute a total
material cost given a unit dimension
and an entered Per Unit Cost.
14 – ConcreteCalc™

Linear Dimensions
To enter dimensional values, enter the
largest dimension first – feet before inch-
es, inches before fractions. Enter fractions
by entering the numerator (value above
the line), pressing [/] and then the
denominator (value below the line).
Note: If no denominator is entered, the
default fraction setting is used. The exam-
ples below show how to enter linear dimen-
sions:
Dimension Keystrokes
5 ft 5 [Feet]
1/2 in 1 [ / ] 2
5 ft 1 in 5 [Feet] 1 [Inch]
5 ft 1-1/2 in 5 [Feet] 1 [Inch] 1 [ /] 2
10 yds 10 [Yds]
17.5 m 17.5 [m]
Note: Yards, meters and millimeters may
only be entered as whole values (5 yards)
or decimal values (5.5 meters), and not in
combination with feet and inches or them-
selves (5 meters, 8 millimeters). If a problem
contains such a dimension, convert the yards
(or meters) to “feet-inches” then add dimen-
sions.
OPERATING BASICS
User’s Guide – 15

Square and Cubic Dimensions
Square and cubic dimensions are
entered in the following order:
1) Numerical Value
2) Convention – Square or Cubic
3) Unit – Meters, Yards, Feet, Inches
Note: Feet–Inch format cannot be used to
directly enter square or cubic values. By
definition, this display format is a linear
measurement. However, the area or volume
can be found through simple multiplication.
The following examples show how to
enter square and cubic dimensions:
Dimensions Keystroke
5 Cubic Yards 5 [Cu] [Yds]
130 Square Feet 130 [Sq] [Feet]
33 Square Meters 33 [Sq] [m]
16 – ConcreteCalc™

Dimension Conversions
Linear Conversions
Convert 14 feet to other linear dimen-
sions:
Keystrokes Display
14 [Feet] . . .
[Conv] [Yds] 4.666667 YD
[Conv] [Feet] 14 FT 0 IN
[Conv] [Inch] 168 IN
[Conv] [mm] 4267.2 MM
[Conv] [m] 4.2672 M
Square Conversions
Convert 14 square feet to other square
dimensions:
Keystrokes Display
14 [Sq] [Feet] . . .
[Conv] [Inch] 2016 SQ IN
[Yds] 1.555556 SQ YD
[m] 1.300643 SQ M
Note: When converting values, [Conv] only
has to be pressed once.
User’s Guide – 17

Cubic Conversions
Convert 14 cubic feet to other cubic
dimensions:
Keystrokes Display
14 [Cu] [Feet] . . .
[Conv] [Inch] 24192 CU IN
[Yds] 0.518519 CU YD
[m] 0.396436 CU M
Note: In the last conversion to “mm” the
answer displays as “meters.” This will occur
whenever the answer is beyond the calcu-
lator’s normal 7-digit range.
Weight Conversions
Convert 25 tons to other weights:
Keystrokes Display
25 [Weight] . . .
[Conv] [Weight] 50000 LB
[Weight] 22679.62 kG
[Weight] 25 Ton
18 – ConcreteCalc™

Weight per Volume Conversions
Your calculator has the capability of
converting between weight and vol-
ume. The weight/volume ratio is per-
manently stored by entering the value
and pressing [Conv] [%]. The default
value is 1.5 tons per cubic yard.
Find the weight of 15 cubic yards at
1.75 tons per cubic yard, then convert
to other weights:
Keystrokes Display
1.75 [Conv] [%] 1.75 Ton Per CU YD
15 [Cu] [Yds] . . .
[Conv] [Weight] 26.25 Ton
[Weight] 52500 LB
[Weight] 23813.61 kG
[Weight] 26.25 Ton
User’s Guide – 19

Math Operations
Your calculator uses standard chaining
logic. This means that you enter your
first value, the operator (+, –, x, ÷), the
second value, then the (=) sign.
3 [+] 2 [=] 5
3 [–] 2 [=] 1
3 [x] 2 [=] 6
3 [÷] 2 [=] 1.5
This feature also makes it easier to
solve dimensional problems.
Adding Dimensions
Add 7 feet 3-1/2 inches to 11 feet 4 inches:
7 [Feet] 3 [Inch] 1[/] 2 [+]
11 [Feet] 4 [Inch] [=] 18 FT 7-1/2 IN
Add 11 inches to 2 feet 1 inch:
11 [Inch] [+] 2 [Feet] 1 [Inch] [=] 36 IN
Add 2 feet 1 inch to 11 inches:
2 [Feet] 1 [Inch] [+]
11 [Inch] [=] 3 FT 0 IN
Note: The format of the first value you enter
determines the format of the answer.
However, with the [Conv] key, you can
change to any format you want, provided
that you maintain convention.
20 – ConcreteCalc™