Calculated Industries 4050-F User Manual

CONSTRUCTION

MA STER®5

ADVANCED FEET-INCH-FRACTION CALCULATOR

Model 4050

Pocket Reference Guide

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Direction

Insert This

CONSTRUCTION MASTER®5

The Construction Master 5 calculator helps
you save time, cut costly errors and build

like a pro!

Quickly Solve:

• Feet-Inches-Fractions, Yards, Metric
Dimensional Problems and Conversions

• Problems Involving All Fractions
— 1/2-1/64ths!

• Areas, Volumes and Weights

• Circle/Arc Calculations

• Common, Hip/Valley, Jack Rafter
Lengths (Regular and Irregular)

• Rake-Wall Solutions

• Concrete, Flooring Quantity

• Squaring-Up

• Stair Layout Solutions, and more!

TABLE OF CONTENTS

GETTING STARTED...............................1

KEY DEFINITIONS/FUNCTIONS..........1

Basic Function Keys ............................1

Dimension Keys...................................2

Arc/Circle Keys ....................................4

Right Triangle/Roof Framing Keys ......4

Stair Layout Key ..................................7

Stair Settings .......................................8

Miscellaneous Functions .....................8

PAPERLESS TAPE EXAMPLE ...........10

PREFERENCE SETTINGS .................11

ENTERING DIMENSIONS ..................13

Linear Dimensions .............................13

Square and Cubic Dimensions..........13

Linear Conversions............................14

Square and Cubic Conversions.........15

BASIC MATH OPERATIONS ..............15

EXAMPLES ...........................................16

Adding and Subtracting Strings of

Dimensions.....................................16

Multiplying Dimensions ......................16

Dividing Dimensions ..........................17

Percent Calculations..........................17

Square Area.......................................18

Rectangular Area and Volume...........18

Entering Square and Cubic and

Adding a Waste Allowance.............19

Weight Conversions ..........................19

Weight per Volume ............................20

Using the Memory .............................21

Board Feet and Cost .........................22

Carpentry — Calculating Number

of Studs ..........................................22

Baluster Spacing................................23

Circle Area and Circumference .........24

Arc Angle or Degree ..........................24

Concrete Volume for Driveway ..........25

Concrete Columns .............................25

Complex Concrete Volume................26

RIGHT ANGLE/FRAMING ...................28

Squaring-Up a Foundation ................29

Pitch — Converting Roof Angle.........29

Converting Slope ...............................30

Common Rafter Length .....................30

Regular Hip/Valley and Jack

Rafters............................................31

Irregular Hip/Valley ............................33

Rake-Wall — No Base.......................34

STAIRS................................................35

Stairs — Given Rise and Run ...........35

Stairs — Given Only the Floor-to-Floor

Rise; Entering Other Than 7-1/2 Inch

Desired Riser Height ......................37

APPENDIX ............................................38

Setting Fractional Resolution.............38

Default Settings .................................39

Auto Shut-Off .....................................39

Accuracy/Errors .................................40

Battery ...............................................41

Replacing the Battery ........................41

Reset .................................................41

AREA AND VOLUME FORMULAS .....42

REPAIR AND RETURN .......................44

WARRANTY ........................................45

FCC CLASS B .....................................47

LOOKING FOR NEW IDEAS ..............47

GETTING STARTED

KEY DEFINITIONS / FUNCTIONS

Basic Function Keys

+ – x Arithmetic operation keys.
÷ =

0 – 9 Keys used for entering
and • numbers.

% Percent Key — Four-func-

O Off Key — Turns all power

o On/Clear Key — Turns on

Ç Convert Key — Used with

√ Square Root Key — Used to

tion (+, –, x, ÷) percent key.

off, clearing all non-perma­nent registers.

power. Pressing once clears
the display. Pressing twice
clears all temporary values.

the dimensional keys to
convert between dimen­sions or with other keys to
access special functions.

find the Square Root of a
non-dimensional or area
value.

POCKET REFERENCE GUIDE — 1

® Recall Key — Used with

other keys to recall stored
values and settings.

µ Memory Key — Adds the

displayed value to Memory.
Clears when the calculator
is shut off.

Ç µ Memory Minus (M–) —

Subtracts the displayed
value from Memory.

Ç ® Memory Clear — Clears

Memory without changing
current display.

® ® Memory Clear — Clears

Memory and displays
Memory Total.

Dimension Keys

y Yards Key — Enters or

converts to Yards.

f Feet Key — Enters or con-

verts to Feet as whole 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.

POCKET REFERENCE GUIDE — 2

i Inch Key — Enters or con-

verts to Inches. Entry can
be whole or decimal num­bers. Also used with the /
key for entering fractional
inch values (e.g., 9 i1
/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 Centimeters Key — Enters

or converts to Centimeters.

M Millimeters Key — Enters

or converts to Millimeters.

b Board Feet Key — Enters

or converts Cubic values to
Board Feet. One Board
Foot is equal to 144 Cubic
Inches.

POCKET REFERENCE GUIDE — 3

w Weight Key — Enters or

converts (a volume value)
to Tons, Pounds, Metric
Tons or Kilograms.
Repeated presses will cycle
through these units.

Arc/Circle Keys

C Circle Key — Calculates

Circle Area and
Circumference based on
entered Diameter.

Ç C Arc — Calculates Arc

Length or Degree based on
entered Diameter and Arc
Degree or Length (e.g., if
Arc Degree is entered, it
will calculate Arc Length,
and vice versa).

Right Triangle/Roof Framing Keys

p Pitch Key — This key is

used to enter or calculate
the Pitch (Slope) of a roof
(or Right Triangle). Pitch is
the amount of “Rise” over
12 Inches of “Run.” Pitch
may be entered as:

POCKET REFERENCE GUIDE — 4

a Dimension 9 i p
an Angle 3 0 p
a Ratio 0 • 7 5 Ç p
a Percentage 7 5 % p

A Pitch entry will remain in
permanent storage until
revised or reset. A solution
will be replaced by its
entered value once the
calculator is cleared.

Ç p Enters Pitch Ratio (e.g., •

5 8 3 Ç p).

r Rise Key — Enters or cal-

culates the Rise or vertical
leg (height) of a Right
Triangle.

R Run Key — Enters or cal-

culates the Run or horizon­tal leg (base) of a Right
Triangle.

d Diagonal Key — Enters or

calculates the common or
Diagonal leg (Hypotenuse)
of a Right Triangle. Typical
applications are “squaring”
slabs or finding common
rafter lengths.

H Hip/Valley Key —

Calculates length of the
Regular or Irregular Hip/
Valley rafter.

POCKET REFERENCE GUIDE — 5

Ç H Irregular Pitch — Enters

Irregular Pitch used to cal­culate lengths of the
Irregular Hip/Valley and
Jack rafters.

j Jack Key — Calculates

Jack rafter lengths on the
Regular-pitched roof side.

Ç j Irregular Jack — Calculates

Jack rafter lengths on the
Irregular-pitched roof side.

∑ Rake-Wall Key — Finds

the stud sizes based on
entered Right Triangle val­ues and the stored On­Center spacing. If a dimen­sional value is entered
before pressing ∑, that
value is considered the
base and will be added to
the stud lengths.

POCKET REFERENCE GUIDE — 6

Stair Layout Key

s Stair Key — Given Rise

and/or Run and entered/
stored variables, calculates
or displays:

Press Result

1 Riser Height
2 Number of Risers
3 Riser Overage/

Underage
4 Tread Width
5 Number of Treads
6 Tread Overage/

Underage
7 Stringer Length
8 Angle of Incline
9 Stored Run
10 Stored Rise
11 Stored Desired

Riser Height
12 Stored Desired

Tread Width

STAIR DEFAULT VALUES

• 7-1/2” Desired Riser Height

• 10” Desired Tread Width

POCKET REFERENCE GUIDE — 7

Stair Settings

You may set “desired Riser height” and
“desired Tread width” to any value by
using the following keys:

Ç 7 Riser Height — Stores a

desired Riser height other
than 7-1/2” (default). For
example, enter 8 Inches:

8 i Ç 7.

Ç 9 Tread Width — Stores a

desired Tread width other
than 10” (default). For
example, enter 12 Inches:
1 2 i Ç 9.

Miscellaneous Functions

B Backspace Key — Used

to delete entries one key­stroke at a time (unlike the
o function, which deletes
the entire entry).

Ç ÷ 1/x — Finds the reciprocal

of a number (e.g., 8 Ç

÷ 0.125).

Ç x Clear All — Returns all

stored values to the default
settings. (Does not affect
Preference Settings.)

Ç – (+/–) Toggle
Ç + Pi (π) 3.141593

POCKET REFERENCE GUIDE — 8

Ç √ x2— Squares a linear or

non-dimensional value.

Ç • Total Cost — Based on

entry of per unit cost.

Ç 0 Store Weight per Volume

— Stores a new Weight per
Volume value as listed

below:

Note: After entering a value and
pressing Ç 0, continue
pressing the 0 digit key until
you’ve reached the desired
Weight per Volume format. To
recall your setting, press ® 0.

• Ton Per CU YD

• LB Per CU YD

• LB Per CU FEET

• MET Ton Per CU M

• kG Per CU M

This value is stored until
you change it or perform a

Clear All (Ç x).

Ç 5 On-Center Spacing (o.c.)

— Stores a new on-center
spacing (e.g., 2 4 i
Ç5). The value is used
for jack and rake wall stud
calculations. Default is 16”.

POCKET REFERENCE GUIDE — 9

® = Paperless Tape – Useful

for checking figures, as it
scrolls through your past 20
entries or calculations.
Press ® = to access
Paperless Tape mode.
Press + or – to scroll for­ward or backward. Press =
to exit mode and continue
with a new entry or calcula­tion. See example below.

PAPERLESS TAPE EXAMPLE

Add 6 Feet, 5 Feet and 4 Feet, then
access the paperless tape mode and scroll
back through your entries. Then, back up
one entry, exit the tape mode and add 10
Feet to the total.

KEYSTROKE DISPLAY

o o 0.
6 f + 6 FEET 0 INCH
5 f + 11 FEET 0 INCH
4 f = 15 FEET 0 INCH
® = TTL= 15 FEET 0 INCH
+ 01 6 FEET 0 INCH
+ 02 + 5 FEET 0 INCH
+ 03 + 4 FEET 0 INCH
– 02 + 5 FEET 0 INCH
= TTL= 15 FEET 0 INCH
+ 1 0 f = 25 FEET 0 INCH

POCKET REFERENCE GUIDE — 10

PREFERENCE SETTINGS

Press Ç, then %, then keep pressing %
to toggle through the main settings. Press
the + key to advance within sub-setting.
Use the – key to back up. Press o key
to exit Preferences.

PRESS
Ç AND: SETTING--FUNCTION

First press
of %: Fractional Resolution:

--1/16

+ --1/32
+ --1/64
+ --1/2
+ --1/4
+ --1/8
+ --1/16 (repeats options)

Second press
of %: Area Displays:

--Std.

+ --0.

SQ FEET

+ --0. SQ YD
+ --0. SQ M
+ --Std. (repeats options)

Third press
of %: Volume Displays:

--Std.

+ --0.

CU YD

+ --0. CU FEET
+ --0. CU M
+ --Std. (repeats options)

(Cont’d)

POCKET REFERENCE GUIDE — 11

(Cont’d)

PRESS : SETTING--FUNCTION

Fourth press
of %: Meter Linear Displays:

--0.000 M

+ --FLOAt M (floating point)
+ --0.000 M (repeats options)

Fifth press
of %: Decimal Degree Displays:

--0.00º

+ --FLOAt (floating point)
+ --0.00º (repeats options)

Sixth press
of %: Fractional Mode:

--Std.

+ --COnSt
+ --Std. (repeats options)

POCKET REFERENCE GUIDE — 12