Calculated Industries Construction Master IV User Manual
Summary of Construction Master IV
Page 1
C onstruction m aster ® iv for today's construction professional user’s guide.
Page 2: Table of Contents
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 ................
Page 3: User'S Guide — 3
User's guide — 3 t he c onstruction m aster ® 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 ♦ engli...
Page 4: Getting
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. [o...
Page 5: User'S Guide — 5
User's guide — 5 [conv] [ ] — x 2 function 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 cl...
Page 6: Dimension Keys
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...
Page 7: User'S Guide — 7
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 ke...
Page 8: Right Triangle/rafter Keys
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...
Page 9: User'S Guide — 9
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 e...
Page 10: [Jack] — Jack Rafter Key
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...
Page 11: User'S Guide — 11
User's guide — 11 stair & circle keys [stair] — stair key a multi-function key that enters a desired riser height and uses the rise and run values to compute and display the following: press result 1 number of risers 2 actual riser height 3 riser overage/underage 4 number of treads 5 actual tread wi...
Page 12: [Conv] [ ÷]
12 — construction master iv additional [conv] key functions when used in conjunction with the following 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 permanent setting...
Page 13: User'S Guide — 13
User's guide — 13 fractional settings setting fractional accuracy when your calculator is in a default condition (battery change or full reset), it is set to round fractional values to the nearest 1/16th of an inch. The fractional level can be revised by using the following keystrokes: [conv] 1 = ac...
Page 14: Entering Dimensions
14 — construction master iv 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), pressing [ / ] (fraction bar key) and then the denominator (bott...
Page 15: User'S Guide — 15
User's guide — 15 linear conversions convert 14 feet to other dimensions: keystroke display 14 [feet] . . . [conv] [yds] 4.666667 yd [conv] [feet] 14 ft 0 in [conv] [feet] 14 ft [conv] [inch] 168 in [conv] [mm] 4267.2 mm [conv] [cm] 426.72 cm [conv] [m] 4.2672 m square conversions convert 14 square ...
Page 16: Cubic Conversions
16 — construction master iv cubic conversions convert 14 cubic feet to other cubic dimensions: keystroke display 14 [cu] [feet] . . . [conv] [inch] 24192 cu in [yds] 0.518519 cu yd [m] 0.396436 cu m [cm] 396435.9 cu cm [mm] * 0.396436 cu m basic math operations your calculator uses standard chaining...
Page 17: User'S Guide — 17
User's guide — 17 adding dimensions add 11 inches to 2 feet 1 inch: 11 [inch] [+] 2 [feet] 1 [inch] [=] * 36 in subtracting dimensions subtract 3 feet from 11 feet 7-1/2 inches: 11 [feet] 7 [inch] 1 [ / ] 2 [–] 3 [feet] [=] 8 ft 7-1/2 in multiplying dimensions multiply 5 feet 3 inches by 11 feet 6- ...
Page 18: Percentage Calculations
18 — construction master iv percentage calculations the percent [%] key can be used for finding 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 dimen- sion (feet, inch, millimeter, etc) and any type of co...
Page 19: User'S Guide — 19
User's guide — 19 memory operation whenever the [m+] key is pressed, the displayed value will be added to the memory. Other memory functions: function keystrokes add to memory [m+] subtract from memory [conv] [m+] recall total in memory [rcl] [m+] display/clear memory [rcl] [rcl] clear memory [conv]...
Page 20: Paperless Tape
20 — construction master iv paperless tape the paperless tape allows the user to display and review the last 20 entries of a calculation. [rcl] [=] accesses the tape mode and [+] or [–] scrolls for- ward or backward through the entries. While in the paperless tape mode, the display will show the ent...
Page 21: User'S Guide — 21
User's guide — 21 previewing paperless tape keystroke display 1. Enter a string of numbers: 4 [feet] [+] 4 ft 0 in 5 [feet] [+] 9 ft 0 in 6 [feet] [+] 15 ft 0 in 7 [feet] [=] 22 ft 0 in 2. Access the tape function: [rcl] [=] ttl= 22 ft 0 in 3. Scroll from first value to total: [+] 01 4 ft 0 in [+] 0...
Page 22: Examples
22 — construction master iv examples linear calculations cutting boards how many 2 feet 2 inch pieces can be made from fifteen 10-foot boards? Keystroke display 1. Divide board length by smaller cuts [on/c] [on/c] 0. 10 [feet] 10 ft [÷] 2 [feet] 2 [inch] [=] 4.615385 (or 4 whole boards) 2. Find tota...
Page 23: User'S Guide — 23
User's guide — 23 masonry — estimating bricks how many standard bricks (3-3/4 inch by 8 inch) are required for a 36.5 feet by 8 feet wall? Keystroke display 1. Find brick area [on/c] [on/c] 0. 3 [inch] 3[ / ] 4 [x] 8 [inch] [=] 30 sq in 2. Store in memory and find wall area [m+] 30 sq in 36.5 [feet]...
Page 24: Area Calculations
24 — construction master iv area calculations area of a rectangle what is the area of a room measuring 12 feet 6 inches by 15 feet 8 inches? Keystroke display [on/c] [on/c] 0. 12 [feet] 6 [inch] 12 ft 6 in [x] 15 [feet] 8 [inch] [=] 195.8333 sq ft area of a square using the x 2 ([conv][ ]) function,...
Page 25: User'S Guide — 25
User's guide — 25 area — floor covering you have an apartment with two rooms of carpet that need to be replaced. The room dimensions are as follows: 12 feet 4 inches by 10 feet and 14 feet 8 inches by 16 feet. How many square yards of carpet are needed and what is the total cost at $11.75 per square...
Page 26: Roof Covering —
26 — construction master iv roof covering — no. Of shingles you’re going to use 12 inch wide by 36- inch long asphalt (strip) shingles with 5-inch weather exposure. How many shingles are required for a 1745 square foot roof? (note: shingle exposure area = exposure x length, and number of shingles = ...
Page 27: User'S Guide — 27
User's guide — 27 volume calculations rectangular containers what is the volume of a container 3 feet by 1 foot 9-5/8 inches by 2 feet 4 inches? (lxwxh) keystroke display [on/c] [on/c] 0. 3 [feet] 3 ft [x] 1 [feet] 9 [inch] 5 [ / ] 8 1 ft 9-5/8 in [x] 2 [feet] 4 [inch] [=] 12.61458 cu ft simple conc...
Page 28: Keystroke Display
28 — construction master iv (cont’d) keystroke display [conv] [yds] 5.146605 cu yd 2. Multiply by cost [x] 55 [conv] [•] $ 283.06 per concrete columns you’re going to pour five columns, each of which has a diameter of 3 feet 4-1/2 inches and a height of 11 feet 6 inches. How many cubic yards of con-...
Page 29: User'S Guide — 29
User's guide — 29 complex concrete volume you’re going to pour an odd-shaped patio 4-1/2 inches deep with the di- mensions shown below. First, calculate the total area (by dividing the drawing into three individual rectangles) and then determine the total yards of con- crete required for this job. (...
Page 30: Keystroke Display
30 — construction master iv (cont’d) keystroke display [on/c] [on/c] 0. 1. Find area of part a 38 [feet] 2 [inch] [–] 4 [feet] 2 [inch] [=] 34 ft 0 in [x] 27 [feet] [=] 918 sq ft [m+] 2. Find area of part b 4 [feet] 2 [inch] 4 ft 2 in [x] 8 [feet] 6 [inch] [=] 35.41667 sq ft [m+] 3. Find area of par...
Page 31: User'S Guide — 31
User's guide — 31 volume/weight calculations concrete footing find the total volume* of concrete re- quired to pour five 24 inch by 12 inch footings, each 2 feet deep. Then find the weight of the concrete (use 1.5 tons per cubic yard). Keystroke display [on/c] [on/c] 0. 1. Enter weight per volume 1....
Page 32: Board Feet/
32 — construction master iv board feet/ lumber calculations board feet and lumber problems can easily be solved with the construction master iv’s built-in board feet and ma- terial estimating function. Total board feet — with dollar cost find the total board feet for one each of the following sizes:...
Page 33: User'S Guide — 33
User's guide — 33 calculations the top row of keys provide you with built-in solutions to right triangles. The solutions are available in any of the linear dimensions offered on the calcu- lator. Thus, you can solve right trian- gles directly in feet and inches, decimal feet, meters, etc. Any value ...
Page 34: Squaring A Concrete Slab
34 — construction master iv squaring a concrete slab assume you want to “square-up” the forms for a concrete foundation meas- uring 45 feet 6 inches by 24 feet 4 inches. In order for the forms to be square, what should the diagonal measurements (square-up) be? 24’ 4” 45’ 6” keystroke display [on/c] ...
Page 35: User'S Guide — 35
User's guide — 35 area for roofing materials you’re ordering roofing materials for a roof with a 5/12 pitch, an overall span of 27 feet and a length of 34 feet 6 inches. How many squares, at 100 square feet each, are there? Keystroke display [on/c] [on/c] 0. 1. Find common rafter length 5 [inch] [pi...
Page 36: Common Rafter Length
36 — construction master iv common rafter length — (pitch known) the roof you are working on has a 7/12 pitch, with a span of 23 feet 6 inches. What length should you cut the com- mon rafters (not counting the overhang or ridge adjustments)? 7/12 pitch 23’ 6” keystroke display [on/c] [on/c] 0. 7 [in...
Page 37: User'S Guide — 37
User's guide — 37 finding rise — (pitch and run known) though not commonly asked for, you can compute the rise or run of a right angle just as you would the diagonal. Find the rise given a 7/12 pitch and a run of 11 feet 6 inches: keystroke display [on/c] [on/c] 0. 7 [inch] [pitch] ptch 7 in 11 [fee...
Page 38: Raked Wall – Stud Sizes
38 — construction master iv raked wall – stud sizes find each stud size in a raked wall with a peak of 15 feet 5 inches, and a length of 30 feet 7 inches. Use 16 inches as your on-center spacing. Keystroke display [on/c] [on/c] 0. 1. Enter rise, run and o.C. Spacing 15 [feet] 5 [inch] [rise] rise 15...
Page 39: User'S Guide — 39
User's guide — 39 hip/valley & jack rafters regular (45°) hip/valley & jack rafters you’re working with a 7/12 pitch, and half your total span is 13 feet 9 inches: (a) find the point-to-point length for the common rafter; (b) find the length of an adjoining hip (or valley); and (c) find the lengths ...
Page 40: 16 Inch On-Center Spacing)
40 — construction master iv jack rafters — (with other than 16 inch on-center spacing) you’re working with a roof having a 7/12 pitch and a run of 30 feet 9 inches. Find the jack rafter lengths at 18 inch on-center spacing. Keystroke display [on/c] [on/c] 0. 1. Enter pitch, run and spacing 7 [inch] ...
Page 41: User'S Guide — 41
User's guide — 41 irregular (non-45°) hip/valley & jack rafters you’re working with a 7/12 pitch and half your overall span is 15 feet 7 inches. The irregular pitch is 8/12. Find the common rafter length, irregular hip/valley and jack rafter lengths. Keystroke display [on/c] [on/c] 0. 1. Find common...
Page 42: Oc 16 In
42 — construction master iv (cont’d) 4. Find regular jack lengths 16 [inch] [jack] oc 16 in [jack] jk1 16 ft 3-5/16 in [jack] jk2 14 ft 6-1/8 in [jack] jk3 12 ft 9 in [jack] jk4 10 ft 11-13/16 in [jack] jk5 9 ft 2-5/8 in etc......Continue pressing [jack] until last regular jack or “0.” is reached..
Page 43: User'S Guide — 43
User's guide — 43 stair problems (risers/treads) the construction master iv easily computes the various values pertaining to stair building. Given values for total rise, total run and a desired stair riser height, your calculator will compute the following with the press of the [stair] key: 1) numbe...
Page 44: Pressing [Stair].
44 — construction master iv the desired stair riser height (default = 7-1/2) inches can be permanently re- vised by entering the new height and pressing [stair]. Risers only — custom height you’re building an access stairway for a client who can’t handle conventional- height risers. If the total ris...
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User's guide — 45 (7-1/2 inch desired riser height) you need to build a stairway having a floor-to-floor height of 28 feet 5-1/2 inches, a run of 35 feet 6 inches and a nominal riser height of 7-1/2 inches (default). Find the number of risers, the riser height and underage/overage, the number of tre...
Page 46: Circle Problems
46 — construction master iv circle problems circumference and area find the circumference and area of a circle having a diameter of 10 inches. Keystroke display [on/c] [on/c] 0. 10 [inch] [circ] dia 10 in [circ] area 78.53982 sq in [circ] circ 31-7/16 in [inch] 31.41593 in arc lengths find the arc l...
Page 47: User'S Guide — 47
User's guide — 47 a ppendix a battery & auto shut-off your calculator is powered by a single 3-volt lithium cr-2032 battery. This should last upwards of 800 hours of actual use (1 year plus for most peo- ple). Should the display become very dim or erratic, replace the battery.* your calculator is de...
Page 48: Ppendix
48 — construction master iv a ppendix b area formulas w l rectangle area = lw b a triangle area = ab 1 2 square area = a a a 2 r circle circumference = 2 πr area = πr 2 b a ellipse area = πab.
Page 49: User'S Guide — 49
User's guide — 49 surface area & volume formulas w l rectangle surface area = 2hw + 2hl + 2lw volume = l x w x h h sphere surface area = 4 πr volume = πr r 2 4 3 3 cone surface area = πr r + h (+ πr if you add the base) volume = πr h r h 2 2 2 2 3 cylinder surface area = 2 πrh + 2πr volume = πr h r ...
Page 50: Epair and
50 — construction master iv r epair and r eturn warranty, repair and return information return guidelines: 1. Please read the warranty in this user's guide to determine if your calculated in- dustries calculator, measuring device or electronic tool remains under warranty before calling or returning ...
Page 51: User'S Guide — 51
User's guide — 51 w arranty warranty repair service – u.S.A. Calculated industries, inc. ("ci") warrants this product against defects in materials and workman- ship for a period of one (1) year from the date of original consumer purchase in the u.S. If a defect exists during the warranty period, ci ...
Page 52
52 — construction master iv non-warranty repair service – u.S.A. Non-warranty repair covers service beyond the warranty period or service requested due to damage resulting from misuse or abuse. Contact the ci authorized service provider listed on the back page of the user’s guide to obtain current p...
Page 53: User'S Guide — 53
User's guide — 53 disclaimer ci makes no warranty or representa- tion, either express or implied, with respect to the product’s quality, per- formance, merchantability, or fitness for a particular purpose. As a result, this product, including but not limited to, keystroke procedures, mathemati- cal ...
Page 54: All Rights Reserved.
Software copyrighted and licensed to calculated industries by construction master technologies, llc, 2003 construction master iv user’s guide copyrighted by calculated industries, 2003 construction master® and calculated industries® are registered trademarks of calculated industries, inc. All rights...