Calculated Industries Construction Master ConcreteCalc Pro 4225 User manual

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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.
• Solve Dimensional Math with Ease
• Dimensional Conversions
• U.S./Metric Conversions
• Weight/Volume Conversions
• Rectangular Area/Volume Calculations
• Block Quantity Solutions
• Footing Volume Calculations
• Instant Square-Up (Diagonal) Solutions
• Drop Distance Calculations
• Circular Area and Circumference
• Arc Length Calculations
• Calculate Stair Risers, Treads, Stringers
and Inclination Angle
• Material Estimations
• Paperless Tape
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TABLE OF CONTENTS
GETTING STARTED .................................1
Key Denitions .......................................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
Calculating Loads ................................26
Blocks and Bricks.................................26
Polygon (Equal-Sided).........................27
Concrete Footing .................................28
Finding Weight Per Volume .................29
Concrete Bags .....................................29
Calculating Drop ..................................30
Stair Calculations.................................32
APPENDIX...............................................35
Accuracy/Errors ...................................35
Battery and Auto Shut-O󰀨 ...................36
Default Settings....................................36
Area Formulas .....................................38
Surface Area and Volume Formulas ...39
REPAIR AND RETURN...........................40
Warranty, Repair and
Return Information ...............................40
WARRANTY............................................41
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GETTING STARTED
KEY DEFINITIONS
Basic Function Keys
+ - x z = Arithmetic operation
keys.
%Percent Key – Used to
nd a given percentage of
a number.
0 - 9 and . Keys used for entering
numbers.
OTurns all power
o󰀨, clearing all non-
permanent registers.
oOn/Clear Key – Turns
on power. Pressing
once clears the display.
Pressing twice clears all
temporary values.
c Convert Key – Used
with the dimensional
keys to convert between
dimensions or with other
keys to access special
functions.
; Store Key – Used for
storing values.
s  Recalls
stored values.
Unit Keys
y Yards Key –Enters or
converts to Yards.
f Feet Key –Enters or
converts to Feet as whole
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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.
i Inch Key –Enters or
converts to Inches. Entry
can be whole or decimal
numbers.Also used with
the /key for entering
fractional Inch values
(e.g., 9 i 1 /
2). Repeated presses
during conversions toggle
between Fractional and
Decimal Inches.
/ Fraction Bar Key –
Used to enter Fractions.
Fractions can be entered
as proper (1/2, 1/8,
1/16) or improper (3/2,
9/8). If the denominator
(bottom) is not entered,
the calculator’s fractional
accuracy setting is
automatically used.
m Meters Key –Enters or
converts to Meters.
c 7 Centimeters –Enters or
converts to Centimeters.
(Cont’d)
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c 9 Millimeters –Enters or
converts to Millimeters.
c 2 Acres –Enters or
converts to Acres.
Length, Width and Height Keys
l Enters Length for
calculation of Area or
Volume.
] Enters Width and
calculates Area, Square-
up and perimeter.
h Enters Height and
calculates Volume, wall
Area and total room
Area. This is a permanent
entry; stored value holds
when turned o󰀨.
Arc, Circle Keys
k Arc — Calculates arc
Length or degree, chord
Length, segment Area,
pie slice Area and
segment rise.
e Circle — Enters diameter
and calculates circle Area
and circumference.
c k — Enters or
calculates circle radius.
c ] Chord — Enters or
calculates the chord
Length of a circle segment.
c h — Enters
or calculates the rise of a
circle segment.
(Cont’d)
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Construction Project Keys
r — Given
stored or entered rebar
inset, rebar size, rebar
on-center spacing and
entered Length and Width
values, calculates the
following:
Press Result
1 Total Feet
2 Total Weight
3 Rebar Size
4 Rebar On-Center
5 Rebar Inset
6 Stored Length
7 Stored Width
If you already know your total linear Feet of rebar, you
can enter the Length to calculate the total Weight based
on the Weight per Foot of the stored rebar size (e.g. 1 0
0 f r r).
c r Inset — Stores rebar
inset. Default is 3 inches.
Rebar inset is the spacing
between the rebar and
the perimeter of the forms
or foundation.
' —
Stores rebar size. Rebar
size can be entered as
a number for rebar sizes
3-11, 14, and 18 (e.g.,
5 r for number 5
rebar), or as a decimal
or fractional value not
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exceeding 6 inches in
diameter (e.g., 5 / 8
r for 5/8 inch bar
size). Default is
number 5 (5/8″).
c Spacing — Stores
rebar on-center spacing.
Default is 18″.
p Loads Key — Calculates
number of loads for a given
Volume or Length, Width,
and Height (Depth) values
and stored load size.
; p — Stores load
size. Load size must be
entered as a cubic value
(e.g., 8 y y y
; p). The default
size is 8 cubic yards.
c 5 Bags — Calculates
number of concrete bags
for a given Volume and
stored bag size.
; 5 — Stores bag
size (Volume per bag of
concrete). Bag size must
be entered as a cubic
value (e.g., . 6 7
f f f ; 5).
Default is 0.666667 cubic
feet per bag, based on a
standard 80 pound bag.
b Blocks/Bricks —
Calculates the number of
concrete blocks required
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to ll 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).
; b — Stores the
block size. Block size must
be entered as a linear
value or a square value.
The default is 128 square
inches block Area and 16
inches block Length.
Note: For bricks, you may also enter a brick size using
; b. For example, when building with standard
“face” bricks, store a brick size of 21 square inches (e.g.,
2 1 i i ; b) or store 32 square Inches
(e.g., 3 2 i i ; b) for “paver” bricks. This
is based on Modular U.S. brick size of 3-5/8 inches x
2-1/4 inches x 7-5/8 inches, including 3/8 inch mortar = 4
inches x 2-5/8 inches x 8 inches.
u —
Calculates the “Square-
Up” (diagonal) Length
given entered Length and
Width values.
d Drop Key — Calculates
total drop (or fall) over
an entered Length given,
entered percentage
drop, inch per foot drop,
or degrees of drop.
Continued presses
will act as a “constant
add” for displaying
successive drops.
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c 8 Board Feet — Enters or
converts cubic values to
board feet.
c e —
Calculates the Volume
and surface Area of a
column and/or cone.
gFooting — Finds quantity
of concrete, based on
entered wall Length and
stored footing Area.
; g Footing Area — Stores
footing Area. Footing
Area must be entered as
a square value (e.g., 2
6 4 i i ;
g).The default footing
is 264 square inches.
c l Polygon — Calculates
full angle, bi-sect angle,
side Length, perimeter
and Area based on
entered radius and
number of sides.
Stair Layout Key
t Given Height and/or Length
and stored variables,
calculates or displays:
Press Result
1 Riser Height (R-HT)
2 Number of Risers
(RSRS)
3 Riser Overage/
Underage (R+/-)
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4 Tread Width (T-WD)
5 Number of Treads
(TRDS)
6 Tread Overage/
Underage (T+/-)
7 Stairwell Opening
(OPEN)
8 Stringer Length
(STRG)
9 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)
15 Stored Floor
Thickness (FLOR)
c t —
Calculates riser Height and
other stair values if you’re
limited by local code. The
calculated riser Height will
never exceed the stored
desired riser Height.
STAIR DEFAULT VALUES
• 7-1/2″ Desired Riser Height
• 10″ Desired Tread Width
• 10″ Floor Thickness
• 6′ 8″ Headroom
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Customizable Stair Settings
; 7 Stores Desired Riser
Height.
; 9 Stores Desired Tread
Width.
; 8 Stores Floor Thickness.
c ; ;
; ; Sets Headroom.
Miscellaneous Functions
aBackspace Key
s = Paperless Tape
c ; Preference Settings
c z —
Finds the reciprocal of a
number (e.g., 8 c z
0.125).
c x Clear All — Returns
all stored values to the
default settings. (Does
not a󰀨ect Preference
Settings.)
c - (+/-) Toggle
c + Pi (π) 3.141593
c . Converts between D:M:S
and decimal degrees.
c % X2 — Squares the value in
the display.
c a ( √ ) Square Root
c / Exponential Notation (x10y)
c 0 Total Cost (based on
entry of per unit cost).
; 0 Weight per Volume —
Stores a new Weight per
Volume value.
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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.
c 6 Tons — Enters or
converts to Tons.
c 4  — Enters or
converts to Pounds.
c 3 Metric Tons — Enters or
converts to Metric Tons.
c 1 Kilograms — Enters or
converts to Kilograms.
nMemory +
c n (M-) Memory Minus
; 1 (M1) Storage Register
; 2 (M2) Storage Register
; 3 (M3) Storage Register
c s Clear M+
s s Recall and Clear M+
s n, 1,
2 or 3 Recall M+, M1, M2 or M3
PREFERENCE SETTINGS
Press c, then ;, then keep pressing
; to toggle through the main settings.
Press the +key to advance within
subsetting. Use the -key to back up.
Press any key to exit Preferences.
PRESS cAND: SETTING—FUNCTION
First press Fractional Resolution:
of ;: --1/16
+--1/32
+--1/64
+1/2
+1/4
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+1/8
+1/16 (repeats options)
Second press Area Displays:
of ;: --Std.
+--0. SQ FEET
+--0. SQ YD
+--0. SQ M
+Std. (repeats options)
Third press Volume Displays:
of ;: --Std.
+-- 0. CU YD
+-- 0. CU FEET
+ -- 0. CU M
+Std. (repeats options)
Fourth press Headroom Height Setting:
of ;: --6 FEET 8 INCH
+* --6 FEET 9 INCH
-* --6 FEET 8 INCH
*Press +to increase or -to decrease by one inch.
Fifth press Exponential Mode:
of ;: --OFF
+--ON
+--OFF (repeats options)
Sixth press Meter Linear Displays:
of ;: --0.000 M
+--FLOAT M (oating point)
+--0.000 M (repeats options)
Seventh press Decimal Degree Displays:
of ;: --0.00° M
+--FLOAT M (oating point)
+--0.00° M (repeats options)
Eighth press Fractional Mode:
of ;: --Std.
+--COnSt
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+--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).
Note: If a denominator is not entered, the fractional
setting value is used.
Examples of how linear dimensions are
entered (press o after each entry):
DIMENSION KEYSTROKES
5 Yards 5 y
5 Feet 1-1/2 Inch 5 f 1 i 1 / 2
17.5 Meters 1 7 . 5 m
Square and Cubic Dimensions
Examples of how Square and Cubic
dimensions are entered (press o after
each entry):
DIMENSION KEYSTROKES
5 Cubic Yards 5 y y y
140 Square Feet 1 3 0 f f
33 Square Meters 3 3 m m
CONVERSIONS
Linear Conversions
Convert 10 feet 6 Inches to other
dimensions, including metric:
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KEYSTROKE DISPLAY
1 0 f 6 i 10 FEET 6 INCH
c f 10.5 FEET
c i 126. INCH
c y 3.5 YD
c m 3.200 M
c 9 3200.4 MM
c 7 320.04 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
1 4 f f 14 SQ FEET
c y 1.555556 SQ YD
Convert 12 cubic feet to cubic yards:
KEYSTROKE DISPLAY
1 2 f f f 12 CU FEET
c y 0.444444 SQ YD
Weight Conversions
Convert 25 tons to other weights:
KEYSTROKE DISPLAY
2 5 c 6 (tons) 25 Ton
c 4 (lbs) 50000. LB
c 1 (kg) 22679.62 kG
c 3 (met tons) 22.67962 MET Ton
Weight per Volume Conversions
Your calculator has the capability of
converting 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.
Find the Weight of 15 cubic yards at 1.75 tons
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per cubic yard, then convert to other Weights:
KEYSTROKE DISPLAY
1 . 7 5 ; 0
STORED 1.75 Ton Per CU YD
1 5 y y y 15 CU YD
c 6 (tons) 26.25 Ton
c 4 (lbs) 52500. LB
c 1 (kg) 23813.6 kG
c 3 (met tons) 23.8136 MET Ton
Converting D:M:S
Convert 23° 42′ 39″ to decimal degrees:
KEYSTROKE DISPLAY
o o 0.
2 3 . 4 2 . 3 9 DMS 23.42.39
c . 23.71°
BASIC MATH OPER ATIONS
Your calculator uses standard chaining logic,
which simply means that you enter your
rst value, the operator ( +, -, x, z ) the
second value and then the Equals sign (=).
A. 3 + 2 = 5.
B. 3 - 2 = 1.
C. 3 x 2 = 6.
D. 3 z 2 = 1.5
This feature also makes the calculator
simple to use for dimensional applications:
Adding and Subtracting Strings of
Dimensions
Add the following measurements:
• 6 feet 2-1/2 inches
• 11 feet 5-1/4 inches
• 18.25 inches
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Then subtract 2-1/8 inches.
KEYSTROKE DISPLAY
6 f 2 i 1 / 2 +
1 1 f 5 i 1 / 4 +
1 8 . 2 5 i = 19 FEET 2 INCH
- 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 DISPLAY
5 f 3 i x 1 1 f
6 i 1 / 2 = 60.59375 SQ FEET
Dividing Dimensions
Divide 30 feet 4 inches by 7 inches:
KEYSTROKE DISPLAY
3 0 f 4 i z 7 i = 52.
Divide 20 feet 3 inches by 9:
2 0 f 3 i z 9 = 2 FEET 3 INCH
PERCENTAGE CALCULATIONS
The % key can be used for nding a
given percent of a number or for working
add-on, discount or division percentage
calculations. It can be used with any type
of number, in any dimension (feet, inch,
millimeter, etc.) and any type of convention
(non-dimensioned, linear, square or cubic).
Calculating Percentages
Find 18% of 500 feet:
KEYSTROKE DISPLAY
5 0 0 f x 1 8 % 90 FEET 0 INCH
Add 10% to 137 square feet:
KEYSTROKE DISPLAY
1 3 7 f f +
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1 0 % 150.7 SQ FEET
Take 20% from 552 feet 6 inches:
KEYSTROKE DISPLAY
5 5 2 f 6 i -
2 0 % 442 FEET 0 INCH
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 nkey is pressed, the
displayed value will be added to the
Memory. Other memory functions:
FUNCTION KEYSTROKES
Add to Memory n
Subtract from Memory c n
Recall total from Memory s n
Display/Clear Memory s s
Clear Memory c s
Memory is semi-permanent, clearing only
when you:
1) turn o󰀨 the calculator;
2) press s s ;
3) press c s ;
4) press c x (Clear All).
When memory is recalled (s n),
consecutive presses of nwill display the
calculated average and total count of the
accumulated values.
Example:
KEYSTROKE DISPLAY
3 5 5 n M+ 355. M
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2 5 5 n M+ 255. M
7 4 5 c n M- 745. M
s n TTL STORED - 135. M
n AVG - 45. M
n CNT 3. M
s s M+ -135.
PAPERLESS TAPE
The Paperless Tape allows you to
display and review the last 20 entries of
a calculation. s = 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 o, or a Clear All is performed.
Previewing Paperless Tape
KEYSTROKE DISPLAY
1. Enter a string of numbers:
4 f + 4 FEET 0 INCH
5 f + 9 FEET 0 INCH
6 f + 15 FEET 0 INCH
7 f + 22 FEET 0 INCH
2. Access the Tape function:
s = TTL= 22 FEET 0 INCH
3. Scroll from rst value to total:
+ 01 4 FEET 0 INCH
+ 02+ 5 FEET 0 INCH
+ 03+ 6 FEET 0 INCH
+ 04+ 7 FEET 0 INCH
+ TTL= 22 FEET 0 INCH
4. Scroll to last 2 values:
-04+ 7 FEET 0 INCH
-03+ 6 FEET 0 INCH
5. Exit Tape function and continue:
=* TTL= 22 FEET 0 INCH
PRG4225E-E.indd 17 6/28/2016 1:03:09 PM