Calculated Industries Construction Master IV User Manual
Summary of Construction Master IV
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User’s guide c onstruction m aster ® iv for today’s construction professional.
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2 — c onstruction m aster ® introducing: t he c onstruction m aster iv ® designed for busy construction professionals, the new construction master iv lets you solve hundreds of dimension-related problems quickly and accurately in metric or feet-inch formats! ◆ solve dimensional math with ease ◆ inst...
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3 — user’s guide key definitions/functions basic functions [+] [–] [x] [÷] [=] arithmetic operation keys. [%] four-function percent key. 0 – 9 digits used for keying-in numbers. [ • ] decimal point. [off ] turns all power off. Resets the dis- play and all non-permanent registers. [on/c] turns on pow...
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4 — c onstruction m aster ® used to find the square root of a number. [conv] x2 — finds the square of the dis- played value. [m+] memory plus — stores the dis- played number in the semi-perma- nent memory. Also adds the displayed number to any previous- ly stored value in memory. The total stored in...
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5 — user’s guide ****************************************** [rcl] [x] imperial/metric mode — selects either imperial or metric defaults for the following settings: pitch, stair riser height, and on-center spac- ing for jack rafters and rake-walls. Note: this is a permanent setting cleared only by re...
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6 — c onstruction m aster ® [inch] inches — this is an entry and con- version key (when used with [conv]). This key can also be used in conjunction with the [/] key for entering values in fractional inch format. [/] fraction bar — this key is used to enter fractions. For example, to enter 1/2, the k...
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7 — user’s guide [mm] millimeters — entry and conver- sion key for millimeters. Operates the same as metric. [bd ft] board feet — this key is used to enter or convert cubic values to board feet (using [conv]). One board foot is equal to 144 cubic inches (1 inch x 1 foot x 1 foot). [weight] weight — ...
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8 — c onstruction m aster ® right triangle/rafter keys [pitch] pitch — this key is used to per- manently enter or calculate the pitch (slope) of a roof (or right tri- angle). Pitch may be entered as an inch format (9 [inch] [pitch]), or as an angle in degrees (i.E., 30 [pitch] for 30°), or also as a...
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9 — user’s guide [diag] diagonal — this key enters or calculates the diagonal leg or hypotenuse of a right triangle. [conv] [diag] rake-wall — this function finds the decreasing stud sizes in a rake- wall based on computed or entered values for pitch, rise and/or run. Repeated presses of [diag] will...
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10 — c onstruction m aster ® irregular (non-45°) hip/valley rafter is displayed. Answers will show an “i” on the display to indicate if it’s an irregular. [conv] [hip/v] irregular pitch — stores the irreg- ular pitch or slope value for calcu- lating lengths of the irregular hip/valley and irregular ...
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11 — user’s guide [jack] jack rafter — used to find the jack rafter sizes—from largest to small- est—for both regular and irregular roofs based on entered values for pitch, rise, run and/or diagonal, jack on-center, and (optionally) irregular pitch (see above). Use [conv] [jack] to access the irregu...
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12 — c onstruction m aster ® stair and circle keys [stair] a multi-function key that displays the following values when pressed repeatedly: number of presses result 1 number of risers 2 actual riser height 3 riser overage/underage 4 number of treads 5 actual tread width 6 tread overage/underage 7 st...
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13 — user’s guide when the [stair] key is preceded by a linear or undimensioned entry, the value will be permanent- ly stored as the “desired riser height”. Undimensioned values are assumed to be millimeters when in metric mode or inches if in english mode. Default = 185 millimeters for metric mode ...
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14 — c onstruction m aster ® additional [conv] key functions: when used in conjunction with the follow- ing keys, the [conv] key gives access to these additional functions: [conv] [÷] reciprocal, or 1/x function. [conv] [x] all-clear — clears all values including memory. Resets all per- manent regis...
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15 — user’s guide fractional rounding settings: when your calculator is in a default condition (after a battery change or full reset), it is set to round fractional values to the near- est 1/16 of an inch. However, you may program your preference for six different accuracy levels which remain in per...
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16 — c onstruction m aster ® linear dimensions below are some examples of how linear dimensions are entered: dimensions keystrokes 17.5 meters 17.5 [m] 5 feet 5 [feet] 1/2 inch 1 [/] 2 5 feet 1 inch 5 [feet] 1 [inch] 5 feet 1-1/2 inch 5 [feet] 1 [inch] 1 [/] 2 10 yards 10 [yds] 205 millimeters 205 [...
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17 — user’s guide dimension conversions linear conversions convert 14 feet to other linear dimensions: keystrokes display shows 14 [feet] . . . [conv] [m] 4.2672 m [conv] [cm] 426.72 cm [conv] [mm] 4267.2 mm [conv] [yds] 4.666667 yd [conv] [feet] 14 ft 0 in [conv] [feet] 14 ft [conv] [inch] 168 in s...
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18 — c onstruction m aster ® note: when performing conversions, [conv] only has to be pressed once. Cubic conversions convert 14 cubic feet to other cubic dimen- sions: keystrokes display shows 14 [cu] [feet] . . . [conv] [m] 0.396 cu m [cm] 396435.9 cu cm [mm] 0.396 cu m * [inch] 24192 cu in [yds] ...
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19 — user’s guide mathematical operations your calculator uses standard chaining logic which simply means that you enter your first value, the operator (+, –, x, ÷), the second value and then the equals sign (“=”). A. 3 [+] 2 [=] 5 b. 3 [–] 2 [=] 1 c. 3 [x] 2 [=] 6 d. 3 [÷] 2 [=] 1.5 this feature al...
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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 for- mat you desire, provided that you maintain convention. Multiplying and dividing dimensions 1. Multiply 5 feet 3 inches by 11 feet 6-1/2 inches: 5 [feet] 3 [inch]...
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21 — user’s guide memory operation whenever the [m+] key is pressed, the dis- played value will be added to the memory. The displayed value will be subtracted from memory by pressing [conv] [m+]. [rcl] [m+] recalls and displays the total value of the memory. [rcl] [rcl] displays and clears the memor...
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22 — c onstruction m aster ® paperless tape the paperless tape allows the user to display and review the last 20 entries of a calcula- tion. This function is accessed by pressing [rcl] [=]. To review entered values, press [rcl] [=] to access the tape mode and then press the [+] or [–] keys to either...
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23 — user’s guide 2. Access the tape function: keystrokes display shows [rcl] [=] ttl= 15 cm 3. Scroll from first value to total: keystrokes display shows [+] 01 4 cm [+] 02+ 5 cm [+] 03+ 6 cm [+] ttl= 15 cm 4. Scroll to last 2 values: keystrokes display shows [–] 03+ 6 cm [–] 02+ 5 cm 5. Exit tape ...
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24 — c onstruction m aster ® battery and auto shut-off — your calcu- lator is powered by a single 3-volt lithium cr-2032 battery. This should last upwards of 800 hours of actual use (one year plus for most people). Should the display become very dim or erratic, replace the battery. Your calculator i...
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25 — user’s guide software copyrighted and licensed to calculated industries by construction master technologies, llc, 2000 construction master iv user’s guide copywrited by calculated industries, 2000 construction master ® and calculated industries ® are registered trademarks of calculated industri...
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Printed in china 9/00 ug4045e-c.