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Linear Conversions
Convert 16 feet to other dimensions:
Keystroke
Display
[On/C] [On/C]
0.
16 [Feet]
16
FEET
[Conv] [Yds]
5.333333
YD
[Conv] [Feet]
16
FEET
0
INCH
[Conv] [Inch]
192
INCH
[Conv] [Met]
4.8768
M
Square and Cubic Conversions
Convert 25 square feet to other square dimensions:
Keystroke
Display
[On/C] [On/C]
0.
25 [Feet] [Feet]*
25.
SQ FEET
[Conv] [Yds]
2.777778
SQ YD
[Conv] [Met]
2.322576
SQ M
Convert 25 cubic feet to cubic yards.
Keystroke
Display
[On/C] [On/C]
0
.
25 [Feet] [Feet] [Feet]*
25.
CU FEET
[Conv] [Yds]
0.925926
CU YD
*Press
[Feet]
twice for square feet; press
[Feet]
three
times for cubic feet.
Dimensional Math
Keystroke
Display
[On/C] [On/C]
0.
10 [Inch] [+] 2 [Feet] 5 [Inch] [=]
3
FEET
3
INCH
2 [Feet] [x] 1 [Feet] 2 [Inch] [=]
2.333333
SQ FEET
5 [Feet] [-] 1 [Inch] 3 [/] 4[=]
4
FEET
10-1/4
INCH
10 [Feet] [÷] 1 [Inch] 1 [/] 4 [=]
96.
59 [Feet] [Feet] [+] 10 [%]
64.9
SQ FEET
“Square-up”/Diagonal
“Square up”(find the diagonal to ensure a perfect
square) a concrete pad that has a length of 10 feet
and a width of 20 feet.
Keystroke
Display
[On/C] [On/C]
0.
10 [Feet] [Conv] [x] [+]
100.
SQ FEET
20 [Feet] [Conv] [x]
400.
SQ FEET
[=]
500.
SQ FEET
[Conv] [÷]
22
FEET
4-5/16
INCH
Material Calculations
The following calculations are based on common
industry standards (see “
Default Values for
Materials
”) for estimating quantities of materials.
You may need to adjust your calculations if you use
values other than specified. Also, remember to factor
in a waste allowance when ordering materials.
Tons of Gravel
How much gravel do you need to cover a 36' x 11'
driveway 2" deep?
Keystroke
Display
[On/C] [On/C]
0.
36 [Feet] [x] 11 [Feet] [ x ] 2 [Inch] [=]
66.
CU FEET
[Conv] [0]
(Gravel)
3.18 tn
Number of Tiles
How many tiles do you need to fill a floor measur-
ing 150 square feet? You’re not sure of the tile
size you’re going to use, so in this example, find
the number of tiles in various sizes.
Note
: After
converting to Tile, press the [1] key until you
reach the desired tile size. The ProjectCalc lists
seven of the most popular tile sizes.
Keystroke
Display
[On/C] [On/C]
0.
150 [Feet] [Feet]
150.
SQ FEET
[Conv] [1]
(Tile)
66.67
(18 in)
[1]
(Tile)
150.00
(12 in)
[1]
(Tile)
337.50
(8 in)
[1]
(Tile)
600.00
(6 in)
MATERIAL EXAMPLES
DIMENSION EXAMPLES
[1]
(Tile)
1350.00
(4 in)
[1]
(Tile)
5400.00
(2 in)
[1]
(Tile)
21600.00
(1 in)
Number of Bricks/Blocks
for a Wall
Find the number of (face) bricks or concrete blocks
needed to do a 40' x 3' wall.
Keystroke
Display
[On/C] [On/C]
0.
40 [Feet] [x] 3 [Feet] [=]
120.
SQ FEET
[Conv] [2]
(Brick)
822.86 F br
[Conv] [3]
(Block)
135.00 bL
Number of Paver Bricks
Find the number of (paver) bricks required for a 3'
x 18' walkway.
Keystroke
Display
[On/C] [On/C]
0.
3 [Feet] [x] 18 [Feet] [=]
54.
SQ FEET
[Conv] [2]
(Brick)
370.29 F br
[2]
(Brick)
243.00 P br
Number of 4'x8' Sheets
How many 4' x 8' drywall sheets do you need for a
wall measuring 20' 5" x 15'?
Keystroke
Display
[On/C] [On/C]
0.
20 [Feet] 5 [Inch] [x] 15 [Feet] [=]
306.25
SQ FEET
[Conv] [4]
(4x8 Sheet)
9.57 Sh
Gallons of Paint
How many gallons of paint will you need to cover
a wall that is 100' long x 8' high?
Keystroke
Display
[On/C] [On/C]
0.
100 [Feet] [x] 8 [Feet] [=]
800.
SQ FEET
[Conv] [5]
(Paint)
2.29 GL
How many square feet will 2 gallons cover?
Keystroke
Display
2 [Conv] [5]
(Paint)
700.
SQ FEET
Rolls of Wallpaper
Find the number wallpaper rolls needed for a wall
measuring 10' 6" x 12'.
Keystroke
Display
[On/C] [On/C]
0.
10 [Feet] 6 [Inch] [x] 12 [Feet] [=]
126.
SQ FT
[Conv] [6]
(Wallpaper)
2.25 rl
Board Feet Calculations
Find the total board feet for three 2" x 4" x 14'
boards:
Keystroke
Display
[On/C] [On/C]
0.
2 [Inch] [x] 4 [Inch] [x] 14 [Feet] [=]
1344.
CU INCH
[Conv] [7]
(Board Feet)
9.33 bF
[x] 3 [=]
27.99
Number of Studs
How many 16" on-center studs are required for a
15 feet 6-1/2 inch wall?
Keystroke
Display
[On/C] [On/C]
0.
15 [Feet] 6 [Inch] 1 [/] 2
15
FEET
6-1/2
INCH
[Conv] [8]
(Studs)
13. St
*Automatically includes one stud for the end.
Bundles of Roof Shingles
How many bundles of roof shingles will you need
to cover a 14' x 11' roof?
Keystroke
Display
[On/C] [On/C]
0.
14 [Feet] [x] 11 [Feet] [=]
154.sq feet
[Conv] [9]
(Roof Bundle)
4.62 rF bn
Finding Cost of Materials
You can use the ProjectCalc to determine the total
cost of a project, if you know the material’s cost per
unit. See the following examples.
Cost of Paint
How many gallons of paint will you need to cover
four (4) walls, if they each measure 10' x 8'? If the
paint costs $21.97 per gallon, what is the total cost?
Keystroke
Display
[On/C] [On/C]
0.
10 [Feet] [x]
10
FEET
0
INCH
8 [Feet] [=]
80
SQ FEET
[x] 4 [=]
320
SQ FEET
[Conv] 5
(Paint)*
0.91
GL
[x] 21.97 [Conv] [ • ]
(Cost)**
19.99
* .91 is just under one gallon
** The approximate cost is $20
Cost of Concrete
How much will 1,250 cubic feet of concrete cost if
the cost per cubic yard is quoted at $50? Convert
cubic feet to cubic yards. Then find the total cost.
Keystroke
Display
[On/C] [On/C]
0.
1250 [Feet] [Feet] [Feet]
1250.
CU FEET
[Conv] [Yds]
46.2963
CU YD
[x] 50 [Conv] [ • ]
(Cost)
2314.81
(It’ll cost approx. $2,315)
[On/C] — On/Clear Key
Turns power on. Pressing once clears the display.
Pressing twice clears all temporary values.
[Off] — Off Key
Turns all power off, clearing all non-permanent
registers.
[%] — Percent Key
Four-function percent key.
[+] [–] [x] [÷] [=]
Arithmetic operation keys.
[0] — [9] and [ • ]
Digits used for keying-in numbers.
Dimension Keys
Entering Square or Cubic
To label a dimension as “square” or “cubic,” enter the
value, then press the desired dimension key twice for
square and three times for cubic. For example, to
enter 25 cubic yards, press 25
[Yds] [Yds] [Yds]
.
[Yds] — Yards Key
Enters or converts to
yards.
[Feet] — Feet Key
Enters or converts to feet as whole or decimal
numbers. Also used with the
[Inch]
and
[/]
keys
for entering Feet-Inch values (e.g., 6
[Feet]
9
[Inch]
1
[/]
2). Repeated presses during conver-
sions toggle between Feet-Inch and Decimal Feet.
[Inch] — 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
[Inch]
1
[/]
2). Repeated presses during conversions toggle
between Fractional and Decimal Inches.
[Met] — Meter Key
Enters or converts to
Meters.
[ / ] — 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).
Fraction Resolution
Your calculator is set to display fractional values to
the nearest 16th of an inch. 1/64 resolution can be
displayed by pressing
[/]
with the value in the dis-
play. The fractional resolution of the calculator can
be permanently set by pressing
[Conv] [/]
with a
clear (zero) display. Repeat presses of the
[/]
will
then revolve through the available settings: 1/16,
1/32, 1/64, 1/2, 1/4 and 1/8.
KEY DEFINITIONS
FINDING COST OF MATERIALS
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