Calculated Industries Construction Master IV User Manual
Summary of Construction Master IV
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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 ...
Page 3: Onstruction
User's guide — 3 t he c onstruction m aster iv designed for today’s construction pro- fessional, the all-new construction master iv® adds even more power and ease of use to the already power- ful construction master line-up. As with earlier models, the format of this calculator is so simple, even th...
Page 4: Etting
4 — construction master iv g etting s tarted 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. [...
Page 5: ] — Square Root Key
User's guide — 5 [ ] — square root key used to find the square root of a non-dimensional or area value. [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+] — memo...
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: [Inch] — Inch Key
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 en- tering fractional inch values (9 [inch] 1 [ / ] 2). Repeated presses during conversions toggle between fractional and decimal inches. [ / ] — fraction bar key ...
Page 8: Right Triangle/rafter Keys
8 — construction master iv right triangle/rafter keys [pitch] this key is used to enter or calcu- late the pitch (slope) of a roof (or right triangle). Pitch is the amount of "rise" over 12 inches (1 meter, if metric) of "run." pitch may be en- tered as: a dimension 9 [inch] [pitch] an angle 30 [pit...
Page 9: [Diag] — Diagonal Key
User's guide — 9 [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. [conv] [diag] — raked walls this function finds the decreasing stud sizes in a raked wall based on comp...
Page 10: [Jack] — Jack Rafter Key
10 — construction master iv [conv] [hip/v] — irregular pitch enters and displays the irregular pitch value used to calculate lengths of the irregular hip/valley and jack rafters. [jack] — jack rafter key finds the jack rafter sizes – from largest to smallest – for both regular and irregular pitched ...
Page 11: Stair & Circle Keys
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 settings...
Page 13: Fractional Settings
User's guide — 13 an entered per unit cost. Note: board feet calculations are per 1,000 bdft (mbm) fractional settings setting fractional accuracy when your calculator is in a default condition (battery change or full re- set), it is set to round fractional values to the nearest 1/16th of an inch. T...
Page 14: Normal Fractional Mode
14 — construction master iv normal fractional mode (default) in normal mode ([conv] 7), the fractional result is reduced to its lowest common denominator (8/16 reduces to 1/2). Fixed fractional mode in the fixed mode([conv] 9), frac- tional results are displayed in the cal- culator's fractional accu...
Page 15: (1) Numerical Value
User's guide — 15 the numerator (top), pressing [ / ] (frac- tion bar key) and then the denominator (bottom). Note: if a denominator is not entered, the fractional setting value is used. Examples of how linear dimensions are entered: dimension keystrokes 5 yards 5 [yds] 5 feet 1-1/2 inch 5 [feet] 1 ...
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16 — construction master iv dimension keystrokes 5 cubic yards 5 [cu] [yds] 130 square feet 130 [sq] [feet] 33 square meters 33 [sq] [m].
Page 17: Linear Conversions
User's guide — 17 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 18: Cubic Conversions
18 — 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 19: Adding Dimensions
User's guide — 19 this feature also makes the calculator simple to use for dimensional applica- tions: adding dimensions add 11 inches to 2 feet 1 inches: 11 [inch] [+] 2 [feet] 1 [inch] [=] * 36 in add 2 feet 1 inches to 11 inches: 2 [feet] 1 [inch] [+] 11 [inch] [=] 3 ft 0 in subtracting dimension...
Page 20: Multiplying Dimensions
20 — construction master iv multiplying dimensions multiply 5 feet 3 inches by 11 feet 6- 1/2 inches: 5 [feet] 3 [x] 11 [feet] 6 [inch] 1[ / ] 2 [=] 60.59375 sq ft multiply 2 feet 7 inches by 10: 2 [feet] 7 [inch] [x] 10 [=] 25 ft 10 in dividing dimensions divide 30 feet 4 inches by 7 inches: 30 [fe...
Page 21: Computing Percentages
User's guide — 21 computing percentages find 18% of 500 feet: 500 [feet] [x] 18 [%] 90 ft 0 in add 10% to 137 square feet: 137 [sq] [feet] [+] 10 [%] 150.7 sq ft take 20% from 552 feet 6 inches: 552 [feet] 6 [inch] [–] 20 [%] 442 ft 0 in divide 350 cubic yards by 80%: 350 [cu] [yds] [÷] 80 [%] 437.5...
Page 22: Press [Rcl] [Rcl];
22 — construction master iv memory is semi-permanent, clearing only when you: 1) turn off the calculator; 2) press [rcl] [rcl]; 3) press [conv] [rcl]; 4) press [conv] [x] (all clear). How to use memory functions: keystroke display 355 [m+] 355. M 255 [m+] 255. M 745 [conv] [m+] 745. M [rcl] [rcl] – ...
Page 23: Paperless Tape
User's guide — 23 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 entered or ca...
Page 24: Previewing Paperless Tape
24 — construction master iv 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 ...
Page 25: Linear Calculations
User's guide — 25 linear calculations spacing calculation — lumber 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 total boa...
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26 — construction master iv note: also applies to trusses and joists. 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...
Page 27: Area Calculations
User's guide — 27 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, find the ...
Page 28: Area — Floor Covering
28 — construction master iv area — floor covering you have an apartment with two rooms of carpet that need to be re- placed. 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 $11.7...
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User's guide — 29 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 expo- sure area = exposure x length, and number of shingles = roof area...
Page 30: Volume Calculations
30 — construction master iv 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 v...
Page 31: Simple Concrete Volume
User's guide — 31 simple concrete volume you’re going to form up and pour your own driveway and you need to accurately calculate the cubic yards of concrete required for the job. The measurements are as follows: 36 feet 3 inches long by 11 feet 6 inches wide by 4 inches deep. What’s the volume of yo...
Page 32: Concrete Columns
32 — construction master iv 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- crete will you need for all five col- umns? Keystroke display [on/c] [on/c] 0. 1. Find surface area of co...
Page 33: Complex Concrete Volume
User's guide — 33 complex concrete volume you’re going to pour an odd-shaped patio 4-1/2 inches deep with the di- mensions shown below. First, calcu- late the total area (by dividing the drawing into three individual rectan- gles) and then determine the total yards of concrete required for this job....
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34 — construction master iv 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 part c 9 [fe...
Page 35: Concrete Footing
User's guide — 35 volume / weight calculations concrete footing find the total volume* of concrete required 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 36: Board Feet/
36 — 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 material estimating function. Total board feet — with dollar cost find the total board feet for one each of the following sizes: 2...
Page 37: Right-Triangle Calculations
User's guide — 37 right-triangle calculations the top row of keys provide you with built-in solutions to right trian- gles. The solutions are available in any of the linear dimensions offered on the calculator. Thus, you can solve right triangles directly in feet and inches, decimal feet, meters, et...
Page 38: Squaring A Concrete Slab
38 — 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 39: Back-Fill On A Slope
User's guide — 39 back-fill on a slope with percent of grade known you’ve built 55 linear feet of a three- foot high retaining wall 3 feet out from the base of a 65% grade. You plan to back-fill to within 12 inches of the top of the wall (for a 2’ depth). How many cubic yards of fill should you have...
Page 40: Area For Roofing Materials
40 — construction master iv 3. Find volume of triangle “b” 55 [feet] 55 ft [x] 3 [feet] 15 [ / ] 16 3 ft 0-15/16 in [x] 2 [feet] [=] 338.5938 cu ft [÷] 2 [=] [m+] 169.2969 cu ft 4. Find total volume [rcl] [rcl] 499.2969 cu ft [conv] [yds] 18.49248 cu yd area for roofing materials you’re ordering roo...
Page 41: Common Rafter Length
User's guide — 41 [÷] 100 [sq] [feet][=] 10.09125 (squares) 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 common rafters (not counting the overhang or ridge adjustments)? 7/12 pitch 23’ 6” keystroke ...
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42 — construction master iv common rafter— (pitch unknown) you’re unsure of the roof pitch but know the rise is 6 feet 11-1/2 inches and the run is 14 feet 6 inches. Find the common rafter length. Then solve for the pitch. Keystroke display [on/c] [on/c] 0. Find diagonal & pitch 6 [feet] 11 [inch] 1...
Page 43: Finding Rise —
User's guide — 43 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 di- agonal. 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 [f...
Page 44: Raked Wall – Stud Sizes
44 — 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. Enter rise, run and o.C. Spacing 15 [feet] 5 [inch] [rise] rise 15 ft...
Page 45: Hip/valley & Jack Rafters
User's guide — 45 hip/valley & jack rafters the construction master iv uses the rise, run, diagonal, pitch and o.C. Spacing values to compute regular (45°) and irregular (non-45°) hip/ valley and jack rafter lengths (ex- cluding wood thickness, etc.). “regular” hip/valley & jack rafters: to solve fo...
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46 — construction master iv additional presses of [jack], once “0” is reached, will cause your calcu- lator to “revolve,” or display the rafter sizes on the opposite side of the hip/valley rafter (i.E., the irregular pitch side). Pressing [conv] [jack] will start the display sequence using the longe...
Page 47: Regular (45°) Hip/valley
User's guide — 47 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 val- ley) and; (c) find the lengths of the regular jack raft...
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48 — 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 49: & Jack Rafters
User's guide — 49 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: (a) find the point-to-point length for the com- mon rafter; (b) find the length of the adjoining “irregular” hip (or valley);...
Page 50
50 — construction master iv 3. Find irregular jack lengths 16 [inch] [conv] [jack] oc 16 in [conv] [jack] ij1 14 ft 11-13/16 in [jack] * ij2 13 ft 7 in [jack] ij3 12 ft 2-3/16 in [jack] ij4 10 ft 9-3/8 in [jack] ij5 9 ft 4-1/2 in etc......Continue pressing [jack] until last regu- lar jack or “0.” is...
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User's guide — 51 stair problems (risers/treads) the construction master iv easily computes the various values pertain- ing to stair building. Given values for total rise, total run and a desired stair riser height, your calculator will com- pute the following with the press of the [stair] key: 1) n...
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52 — construction master iv the desired stair riser height (default = 7-1/2) inches can be permanently revised 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 conven- tional-height risers. If the total rise...
Page 53: Risers & Treads —
User's guide — 53 risers & treads — (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,...
Page 54: Circle Problems
54 — 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 inch arc lengths find the arc...
Page 55: Ppendix
User's guide — 55 a ppendix a accuracy/errors accuracy/display capacity — your calculator has an eleven digit display made up of seven digits (normal dis- play) and four fractional digits. Each calculation is carried out internally to 10 digits. Errors — when an incorrect entry is made, or the answe...
Page 56: Battery & Auto Shut-Off
56 — construction master iv 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 desi...
Page 57: Ppendix
User's guide — 57 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 π r area = π r 2 b a ellipse area = π ab.
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58 — construction master iv surface area & volume formulas w l rectangle surface area = 2hw + 2hl + 2lw volume = l x w x h h sphere surface area = 4 π r volume = π r r 2 4 3 3 cone surface area = π r r + h (+ π r if you add the base) volume = π r h r h 2 2 2 2 3 cylinder surface area = 2 π rh + 2 π ...
Page 59: Arranty
User's guide — 59 w arranty warranty repair service – u.S.A. Calculated industries, inc. ("cii") war- rants this product against defects in materi- als and workmanship for a period of one (1) year from the date of original consumer purchase in the u.S. If a defect exists dur- ing the warranty period...
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60 — construction master iv vide an explanation of the service require- ment, your name, address, day phone num- ber and dated proof of purchase (typically a sales receipt). If the product is over 90 days old, include payment of $6.95 for return shipping and handling within the contigu- ous 48 state...
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User's guide — 61 product repaired in your area, you may contact cii to obtain current product repair information and charges, including freight and duties. Disclaimer cii makes no warranty or representation, either express or implied, with respect to the product’s quality, performance, merchantabil...
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62 — construction master iv tension, or addition to this warranty. Some states do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you spe- cific rights, an...
Page 63: Looking For New Ideas
User's guide — 63 looking for new ideas calculated industries, a leading manufacturer of special function cal- culators and digital measuring instru- ments, is always looking for new pro- duct ideas in these areas. If you have one, or if you have any suggestions for improvements to this product or i...
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64 — construction master iv calculated industries, inc. 4840 hytech drive carson city, nv 89706 u.S.A 775/885-4975 • fax: 775/885-4949 e-mail: techsup@calculated.Com http://www.Calculated.Com.
Page 65: All Rights Reserved.
Software copyrighted and licensed to calculated industries by construction master technologies, llc, 1999 construction master iv user’s guide copyrighted by calculated industries, 1999 construction master® and calculated industries® are registered trademarks of calculated industries, inc. All rights...