Calculated Industries Construction Master IV Manual de usuario

CONSTRUCTION MASTER®IV

For Today's Construction Professional

User’s Guide

2 — Construction Master IV

Table of Contents

The Construction Master®IV...........3

GETTING STARTED...........................4

Key Definitions/Functions................4

Fractional Settings.........................13

Entering Dimensions.....................14

Basic Math Operations..................16

Percentage Calculations ...............18

Memory Operation.........................19

Paperless Tape.............................20

EXAMPLES.......................................22

Linear Calculations........................22

Area Calculations..........................24

Volume Calculations .....................27

Volume/Weight Calculations ........31

Board Feet/ Lumber Calculations..32

Right-Triangle Calculations..........32

Hip/Valley & Jack Rafters..............39

Stair Problems (Risers/Treads)....43

Circle Problems.............................46

Appendix A.......................................47

Battery & Auto Shut-Off.................47

Default Values...............................47

Appendix B.......................................48

Repair and Return ...........................50

Warranty...........................................51

User's Guide — 3

THE CONSTRUCTION MASTER®IV

Designed for today’s construction pro-

fessional, the Construction Master®IV

is so simple, even the novice user will

find it easy to solve hundreds of di-

mension-related problems right in feet,

inches and fractions!

♦Solve Dimensional Math

♦English/Metric Conversions

♦Calculate Areas/Volumes

♦Solve Right-Triangle Problems

♦Find Regular and Irregular Hip,

Valley and Jack Rafters

♦Calculate Stair Risers, Treads

and Stringers

♦Solve Raked Wall Stud Lengths

♦Volume/Weight Conversions

♦Estimate Board Feet

♦Find Circular Areas,

Circumferences and Arcs

♦Material Estimations

♦Paperless Tape Function

♦And much, much more!

4 — Construction Master IV

GETTING STARTED

Key Definitions/Functions

Basic Function Keys

[+] [–] [x] [÷] [=]

Arithmetic operation keys.

[%]

Four-function percent key.

[0] – [9] and [ • ]

Digits used for keying-in numbers.

[Off] — Off Key

Turns all power off, clearing all non-

permanent registers.

[On/C] — On/Clear Key

Turns on power. Pressing once

clears the display. Pressing twice

clears all temporary values.

[Conv] — Convert Key

Used with the dimensional keys to

convert between dimensions or with

other keys to access special func-

tions.

[] — Square Root Key

Used to find the square root of a

non-dimensional or area value.

User's Guide — 5

[Conv] [ ] — x2Function

Finds the square of a linear or non-

dimensional value.

[M+] — Memory Key

Adds the displayed value to Mem-

ory. Clears when the calculator is

shut off.

[Conv] [M+] — Memory Minus (M–)

Subtracts the displayed value from

Memory.

[Conv] [Rcl] — Memory Clear

Clears Memory without changing

current display.

[Rcl] — Recall Key

Used with other keys to recall stored

values and settings.

[Rcl] [x] — Imperial/Metric Mode

Changes the defaults of the calcula-

tor by setting to Imperial (English) or

Metric mode. Note: This setting is

not affected by the ALL CLEAR

function.

6 — Construction Master IV

Dimension Keys

[Weight] — Weight Key

Enters or converts (a volume value)

to tons, pounds, metric tons or kilo-

grams. Repeated presses will cycle

through these units.

[Conv] [%] — Weight/Volume

Enters or converts the Weight per

Volume setting as Tons/Yard³,

Lbs/Yd³, Lb/Ft³, Metric Ton/m³ or

kg/m³. Repeated presses will cycle

through these settings.

[Cu] — Cubic Key

Defines a volume (e.g., 5 [Cu]

[Yds]).

[Sq] — Square Key

Defines an area (e.g., 5 [Sq][Feet]).

[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

toggle between Feet-Inch and Deci-

mal Feet.

User's Guide — 7

[Inch] — Inch Key

Enters or converts to inches. Entry

can be whole or decimal numbers.

Also used with the [/] key for enter-

ing fractional inch values (e.g., 9

[Inch] 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] — Meter Key

Enters or converts to meters.

[cm] — Centimeter Key

Enters or converts to centimeters.

[mm] — Millimeter Key

Enters or converts to millimeters.

[Bd Ft] — Feet Key

Enters or converts cubic values to

board feet. One board foot is equal

to 144 cubic inches (1 foot x 1 foot x

1 inch).

8 — Construction Master IV

Right Triangle/Rafter Keys

[Pitch]

This key is used to enter or calculate

the pitch (slope) of a roof (or right tri-

angle). Pitch is the amount of "Rise"

over 12 inches (1 meter, if metric) of

"Run." Pitch may be entered as:

a dimension 9 [Inch] [Pitch]

an angle 30 [Pitch]

a ratio 0.75 [Conv] [Pitch]

a percentage 75 [%] [Pitch]

A pitch entry will remain in perma-

nent storage until revised or reset. A

solution will be replaced by its en-

tered value once the calculator is

cleared.

[Rise] — Rise Key

Enters or calculates the rise or verti-

cal leg (height) of a right triangle.

[Run] — Run Key

Enters or calculates the run or hori-

zontal leg (base) of a right triangle.

[Diag] — 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.

User's Guide — 9

[Conv] [Diag] — Rake Walls

This function finds the decreasing

stud sizes in a raked wall based on

computed or entered values for

pitch, rise and/or run. Repeated

presses display stud sizes from

longest to shortest.

The on-center spacing of a raked

wall can be permanently stored by

entering a dimension prior to solving

for stud sizes (12 [Inch] [Conv]

[Diag]). Default on-center spacing is

16 inches (Metric Mode: 600 mm).

[Hip/V] — Hip/Valley Rafter Key

Finds the regular or irregular hip/

valley rafter length. If an irregular

pitch is entered, the irregular hip/

valley rafter length is displayed, oth-

erwise the regular (45º) hip/ valley

rafter length is displayed.

[Conv] [Hip/V] — Irregular Pitch

Enters and displays the irregular

pitch value used to calculate lengths

of the irregular hip/valley and jack

rafters.

10 — Construction Master IV

[Jack] — Jack Rafter Key

Finds the jack rafter sizes – from

largest to smallest – for both regular

and irregular pitched roofs. The ini-

tial jack rafter values displayed are

from the regular pitched side. After

showing the minimum value, the cal-

culator will display the sizes for the

irregular pitched side. An on-center

spacing can be entered by pressing

[Jack] (i.e., 12 [Inch] [Jack]). The

default spacing is 16 inches (Metric

Mode: 600 millimeters).

[Conv] [Jack] — Irregular Side Jacks

Operates same as [Jack], but dis-

plays the irregular pitched side jack

rafters first. The calculator uses the

same on-center spacing as the regu-

lar pitch sided jack rafters unless a

new on-center spacing is entered

(e.g., 19.2 [Inch] [Conv] [Jack]).

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