Product Manual

ManualsBrandsJobber Instruments ManualsConstruction CalculatorsJob 6 Construction Calculator

PAGES

Key Definitions .................... 4-11, 62

Entering Dimensions ................... 12-14

Metric ................................... 16

Solving Triangles ................. 15, 17-23

Solving Circles ................... 15, 41-47

Slopes and Percentages ................... 26

Calc. Concrete Volume ................. 27-30

Memories ................................ 4-6

Rake-Up ............................... 35-38

Rake-Down ............................. 39-40

Segmented Rise ........................ 45-47

Jack Rafters .......................... 49-50

Roof Trusses & Rafters ......... 48-50, 53-54

Hip and Valley ........................ 50-52

Stairs ................................ 55-57

Miter Cuts ............................... 46

Squaring Up Anything ................. 24, 61

Calculating Brick ........................ 25

Calculating Board Feet ................... 25

Off Set Bracing ....................... 31-32

Oblique Triangles ..................... 33-34

Special Formulas ......................... 58

Special Notes ................. 6, 10, 15, 61

INDEX PAGE

(2)

JOBBER “6”INSTRUCTION MANUAL

THE FEET INCHES SIXTEENTHS

CALCULATOR WITH

INSTANT CONVERSION BETWEEN

ALL MODES

The JOBBER 6 was developed especially for use by

anyone connected with the building and construction

industry.

JOBBER 6 has “FIVE” different dimensional

formats with instant conversion between all formats.

NOTE THIS FEATURE

A feature requested by many Jobber users is that they would

like to be able to set the calculator to work only in 16th and

not convert to lower case denominator fractions. This is

accomplished by pressing the FIS key a second time.

However, if you want to go to lower case fraction again, press

the FIS key again, as it will switch back and forth.

1 Feet, inches & fractions 4 Decimal (of inches)

2 Decimal (of feet) 5 Metric (millimeters, meters)

3 Inches & fractions

All will work with the many built-in math programs.

This means that complex calculations can be made

without the use of charts or tables, thus decreasing errors and

increasing production.

The primary difference between the JOBBER 6 and other

calculators is its use of its special keyboard of 0 to 15 instead

of 0 to 9. This allows inches and fractions to be entered with

a single keystroke each.

(1)

Summary of content (30 pages)

PAGE 1
JOBBER “6”INSTRUCTION MANUAL INDEX PAGE PAGES Key Definitions .................... 4-11, 62 Entering Dimensions ................... 12-14 Metric ................................... 16 Solving Triangles ................. 15, 17-23 Solving Circles ................... 15, 41-47 Slopes and Percentages ................... 26 Calc. Concrete Volume ................. 27-30 Memories ................................ 4-6 Rake-Up ............................... 35-38 Rake-Down .............................
PAGE 2
6 – DIFFERENT MODES KEYS TO PRESS Each Mode may be interchanged at any time. Thus, you can convert any (FIS) dimension to Decimal or Metric, and vice versa with a single keystroke. With an incorrect entry or answer beyond the range of the calculator, the display will show “error.” To clean an error condition you must press the “CLR” button. In the Decimal and Metric Modes, the display capacity is SEVEN digits, or “9999999.
PAGE 3
When these memories have a stored value in them a small M1 - M2 - M3 will light up in the display. MEM M4 and M5 will not light up in the display. You can press RCL M4 or M5 to see if they have a stored value in them. These same 5 Memories can also be used as Accumulative Memories. To clear these memories – first clear the display with only zeros “0” showing in the display. MEM becomes Memory Plus (Adds to Memory).
PAGE 4
KEY DEFINITIONS DEC This key activates the Decimal of Feet Mode and converts any other displayed value to the equivalent in Decimal of Feet. In this mode the calculator can be used as a standard calculator. JACK INV DEC DEC iINCH This key activates the Inch Mode and converts any other displayed dimension to inches and fractions or press INCH key a second time and go into the Decimal Inch Mode. HIP This key will automatically calculate the Hip/Valley Pitch of a 45° Hip/Valley roof.
PAGE 5
KEY DEFINITIONS INV PITCH RECALLING TANGENT OR PITCH DMS INV MEN DMS INV RCL SIN INV 6 INV. SIN INV 7 COS INV 8 INV. COS INV 9 AREA INV 10 v INV X2 ▲ INV CLR LGTH INV HIP DEGREES-MINUTES-SECONDS (INPUT): Allows the input of degrees, minutes and seconds into the calculator. DEGREES-MINUTES-SECONDS: This function will convert a decimal degree that is shown in the display to degrees, minutes and seconds. SINE: This function will calculate the sine of a degree or value displayed.
PAGE 6
THIS IS FEET OR WHOLE NUMBER. THIS IS THE INCHES. THIS IS THE FRACTION ▼ OR SIXTEENTH. ▼ ▼ 0 0 1 1 1" 2 2 2" 3 3 3" 4 4 4" 5 5 5" 6 6 6" 7 7 7" 8 8 8" 9 9 9" 10 10" 11 11" 12 * * * * 13 14 15 0 /16 2 /16 or 1/8 3 /16 4 /16 or 1/4 5 /16 6 /16 or 3/8 7 /16 8 /16 or 1/2 9 /16 10 /16 or 5/8 11 /16 12 /16 or 3/4 13 /16 14 /16 or 7/8 15 /16 1 In the INCH MODE only these keys can be used for inches. (11) SEE PAGE 62 FOR ADDITIONAL HELP.
PAGE 7
EXAMPLES OF HOW TO ENTER DIMENSIONS IN THE FIS (FT., INCH, SIXTEENTH MODE.) Enter 10' - 10 /8" /8 1 0 10 10 10 – 10 – 10/16 /4 /4" 9 11 12 3 Enter 8 /8" 3 8 9 – 11 – 12 /16 3 8 0 /8 6 0–8– /16 /16 6 /16" Enter 12' - 13/4" 1 2 1 12 Note: The 12 key could not be used here as this is a whole number of feet. 10 Enter 2' - 8" 2 0 8 2 0 4 12 /16 0 9–0– 0 – 10 – 0/16 2 – 8 – 0/16 22 – 4 – 12/16 Always press the numbers just as you would say them.
PAGE 8
★ METRIC INFO RADIUS SHIFT PITCH INV. DEGREE DIA RUN DEG SPAC CORD ARC. LGTH RISE X 2 M.O. CIR. SLP TAN METER AREA MM This key activates the Metric Mode and converts any other displayed dimension to the equivalent in Millimeters. When this mode is activated, the small icon MET.MM will appear in lower left corner of the display. 10 HIP 12345 12345 ø 12345 12345 0 • KEYBOARD These are the keys for automatically solving right triangles and segments of a circle.
PAGE 9
12 ▲ TANGENT ▼ 0 RUN = 12' – 83/4 DISPLAY 0–0–0 12 – 8 – 12/16 12 – 8 – 3/4 9 – 11 – 6/16 9 – 11 – 3/8 16 – 1 – 7/8 0 – 9 – 3/8 DEC .781505 DEG 38.00783 (17) / ▲ ▼ Given...Pitch = 615/16' and Run = 20' – 111/4" Find.....Rise and Slope Note....When the Pitch and one side is known, the other sides can be calculated with ease. PRESS FIS 1 2 8 12 RUN 9 11 6 RIS SLP PITCH ANSWERS: Slope Pitch Tangent Degree for Tangent 12" PITCH 615 16 RUN = 20' – 111/4 Given...
PAGE 10
C 1' – 0 ▲ ▼ 25° BEVEL PITCH PE SLO 24' ▲ ▼ RUN – B RUN – B Given...Rise – “A” = 10' – 811/16" and Angle = 25 degrees Find.....Pitch, Run and Slope Note....When the angle, and one of the three sides of a right triangle are known, the length of each of the other two sides, and the pitch, can easily be calculated as follows: REMARKS Turn on Jobber Put Jobber into Dec. mode Enter given Degree Tell Calc.
PAGE 11
▲ ▼ PE SLO mm 761 5 = TAN. R = 250 mm PITCH 156 mm ▲ ▼ RUN RUN = 6029 mm Given...Run = 6029 mm and Rise = 4522 Find.....Tangent (in Metric Tangent is Pitch) (Find Rise based on a Run of 250 mm) Find.....Slope Also Convert Metric Tangent to FIS Pitch Given...A Pitch of 156 mm, Rise to 250 mm Run Given...Slope dim of 5761 mm Find.....Run Find.....Rise Convert Metric Bevel to FIS REMARKS PRESS Turn on Jobber FIS Switch to Metric Mode MET Enter Given Run 6 0 2 9 Tell Calc.
PAGE 12
HOW TO ENTER OR CONVERT TO DEGREES – MINUTES – SECONDS DMS To convert a decimal degree that is shown in display to DEG. – MIN – SEC Press: INV – You want to square up a building for which you know the Dims. of two sides. What should the Diagonal Dim. be? MEM DMS INV – RCL SHIFT DMS Example of How to Enter a D.M.S. Press INV – MEM Enter 37° 22' 25" into calculator Press: 3 7 • 2 2 • 2 5 Display Reads Now Convert to Decimal Degree Now Ask for Tangent DEC TAN 37.37361 0.
PAGE 13
ESTIMATING BRICK How many standard bricks are required for a wall 42'-8" long x 9'-0" high. Convert 12.5% of Slope to Pitch. We have a ramp sloping at 12.5% - what is the pitch per foot? Brick Size (3-3/4" x 8") REMARKS Find area of brick Store in MEM KEYSTROKES DISPLAY READS 3 12 x 8 0 = 0.208333 MEM 0.208333 Find sq. ft. in the wall (go back to FIS) FIS 4 2 8 0 x 9 0 0 = 384 – 00/16 Divide by brick area Add 5% for waste PERCENT OF SLOPE ÷ RCL = 1843.2 (bricks) x 1 • 0 5 = 1935.
PAGE 14
8" 15' – 10 1/2" 12' – 91/4" NOTE: There are 27 Cubic Feet of concrete in one cubic yard. How many cubic yards of concrete are required to pour this slab. 1' – 4 You have 160 Lin. Ft. of concrete footing. How many cubic yards of concrete is needed? REMARKS Turn on Jobber Enter 8" PRESS FIS 8 0 DISPLAY 0–0–0 0–8–0 Multiply by 1' – 4 Equals Multiply by 160' X 1 4 0 = X 1 6 0 = 1–4–0 0.888889 142.2222 (cubic feet) 5.26749 (cubic yards) CU. YD. Conv.
PAGE 15
'-6 PART A 21'-0 27'-2 You are pouring this odd shaped slab 5" deep. How many yards of concrete are required? Find area Part A Store in (M + M3) Find area Part B 0 325 – 6 0 2 3 0 0 x 2 4 0 0 = 552 – 0 Store in (M + M3) Find area Part C M3 INV MEM 3 MEM+ M3 0 INV MEM 3 552 – 0 2 7 2 0 x 1 9 2 0 = MEM+ Store in (M + M3) MEM- M3 Recall total Sq. Ft. Multiply by 5" Deep /16 /16 /16 520.6944 M3 INV MEM 3 1398.194 x FIS 5 0 = 582.581 (cubic ft.) CU. YD.
PAGE 16
OFF-SET BRACING 24 ' REMARKS ADD (B + D) –01 [D] = 16' – 51/4" [B] = 17' – 61/4" [G ]= FORMULA “A” /8" A C ]= [E ' 24 / 9 " 6 3 1 – /4" + 16' – 5 /4" 1 (D) Recall Mem. “#1” /4" + 17' – 6 /4" 1 (B) ANSWER: A = 11' – 77/16" SEE FORMULAS “A” and “B” on following page (31) /8" 4 17 – 6 – 4/16 17 – 6 – 1/4 RCL 33 – 11 – 1/2 1 = Multiply X .515951 .515951 FIS 0 – 6 – 3/16 2 4 9 3 24 – 9 – 3/16 = 12.
PAGE 17
C A a b C B OBLIQUE TRIANGLES 1. Oblique triangles can be solved if you know 2 angles and one side, or 2. If you know 2 sides and one angle. FORMULA: a/SIN A = b/SIN B = c/SIN C The keystroke procedures presented here are not unique. There are many possible solutions to each problem. Until you become comfortable with a particular formula you may find it valuable to draw a diagram and label your results.
PAGE 18
NOTE: If during the solving process you make a mistake or want to start over, press the CLR key, then reactivate the RK-UP rise function by pressing the INV 13 keys to start the solving process over again, or to review the answers TAPE activate the TAPE function by pressing INV = keys then the – key, to review the answers in reverse.
PAGE 19
EL 820' – 11/2" D 3'-8 3 • 2'-65/8" * 18'-10" * * 18'-10" * 1'-41/2" B ❤ 822'-81/8" 89'-8" C ❤ 823'-101/4" A ❤ • 22'-0" 821'-6" ▲ • ▲ 3.576° Enter RUN 8 Enter RISE SPECIAL SPACING * 18'-10" • 11'-2" /4" 824'-65/8" KEYS TO PRESS DISPLAY READS 9 5 Enter Default Spacing 1 Activate Rake-Up Function Enter Special Spacing 8 7 8 0 4 10 RUN RISE 0 SPAC 89 – 8 – 0 5 – 7 – 4/16 18 – 10 – 0 RK-UP INV 13 0–0–0 2 2 0 0 SPAC 22 – 0 – 0 Ask for DIM.
PAGE 20
RAKE-DOWN KEY FUNCTION The RAKE-DOWN mode works very similar to the RAKE-UP mode with the exception it starts with the high side of the triangle and works down. It is excellent for finding the decreasing stud lengths in a raked wall. REMARKS /16" (39) SPECIAL SPACING DEFAULT SET SPACING E Fig.
PAGE 21
Solve circles Segment of Circle Example #1 Given Cord = 10' – 51/2" Given M O = 1' – 2" Find Radius ? _________ Find Degree ? _________ Find Area in Circle ? _________ instantly in the DIA.
PAGE 22
STILL IN CIRCLE MODE. REMARKS Enter Radius PRESS Go to Dec. Mode 7 10 12 M 7 – 10 – 3/4 DEC 7.895833 57.25 Tell Calc. this is Degree RUN 57.25 DEG 57.25 ARC Ask for Arc X 7.889525 Convert to FIS FIS 7 – 10 – 11/16 Ask for Cord 2 CORD RIS MO Ask for M O SLP CIR Ask for CIR Ask for Area of Circle pi INV 10 RA DI U S CIR CU AREA 4.338837” CORD BOLT CIRCLES CAN BE SOLVED IN SECONDS KNOWN 10" DIA.
PAGE 23
D C B A 6'-9" E 3'-19/16" 6'-73/4" 7'-45/16" 5'-25/16" /4" 7'-93/16" 7'-1013/16" 6'-101/2" 12 '-8 1 F 7'-1013/16" MO 4'-97/16" 12'-81/4" REMARKS 10 10 10 11'-9" 23'-6" DISPLAY READS Ask for DIM. E + 3 – 1 – 9/16 To find DIM. F clear display CLR 0 – 0 – 0/16 Reactivate Segm.
PAGE 24
261/8" E D C A B 0° 18 4013/16" " 5115/16" 569/16" 593/16" 60" 60 Roof rafters and trusses, even Hip and Valley, can be figured instantly with JOBBER “6” * * * • * • 10 10 10 14 10 6 * Solve One/Half of a Circle using the Inch Mode • DISPLAY READS • 100/16 600/16 + 593/16 Ask for DIM. B + 569/16 Ask for DIM. C + 5115/16 1 4 0 SPAC 140/16 Ask for DIM. D + 4013/16 Ask for DIM. E + 261/8 Enter Special Space (47) 2 1/16" Ask for DIM.
PAGE 25
The roof we are working on has a 5 1/2 inch pitch with a span of 24' 0", as indicated in the sketch below. Find the common rafter length, hip pitch, hip length and jack lengths. 1 28'–0" 13'–11 /2" /4 3 15 '-4" 51/2 To find the exact degree cut for the hip beam, recall the 5 1/2" roof pitch to the display by pressing INV PITCH then press HIP . The display will read .324091 which is the tangent for the hip. Now press INV TAN and the hip degree cut will be displayed 17.95702 DEGREES.
PAGE 26
16' – 6" 14' – 0" KNOWN KNOWN BA SE 10 /1 6 DI 3 45° 12 / 12 9 9' 16 " / " 16 9 E – AS 1 Z. I . M DI B R M. SLOPE 6' – 5" 17 2'–0" 11 4 / 12 15' / 1 6" OW N 5 1 / 2 14' – 6" 12' – 0" 16' – 6" 14' – 0" SEE NEXT PAGE FOR WRITTEN CALCULATIONS (51) 0 – 51/2 Ask for Hip Tangent HIP .324091 Convert to FIS for Pitch FIS 0 – 37/8 DEG INV TAN 17.89613° FIS 17 – 103/4 LGTH INV HIP 20 – 93/4 First find the diagonal (horiz. base dim.
PAGE 27
REMARKS D E C F /4 1 1' 6" B A KEYS TO PRESS DISPLAY READS Enter PITCH Truss #1 4 8 PITCH 41/2 Enter 51/2 Member Size 5 8 51/2 Tell Calc. this is RUN RUN 51/2 Ask for SLOPE, find DIM A SLP 57/8 Add 1/4" Heel, find DIM B + 4 = 61/8 Enter 1'-6 overhang 1 6 0 1 – 60/16 Tell Calc.
PAGE 28
HOW TO CALCULATE A STAIR Start with the known of 9' - 8" Floor to Floor Dimension RISERS We must first decide what is the maximum riser height we want to use or that the code will allow. In many areas 7" is the max. So now we must determine how many risers are required. By dividing 7" into 9' - 8". Enter 9' – 8" in display Divide by 7" 9 8 0 ÷ 7 0 = 16.57143 The answer is over 16, so that means in order for the risers not to exceed 7" we must have 17 risers.
PAGE 29
To cube a DIM. use the x2 key to raise it to the 2nd power then multiply the results one more time by itself. TREAD There is always one less tread than the total risers. There are 17 total risers (fl. to fl.). There will be 16 tread (always subtract the bottom riser). W Many codes require that commercial tread be a min. of 11" inches wide (so we will use 0' – 11").
PAGE 30
Limited Six Month Warranty The Jobber 6 calculator is warranted against defects in materials and workmanship for 6 months from the original date of purchase. The warranty does not cover batteries or vinyl case, and is void if the calculator is damaged by accident, misuse, neglect, or improper service. During the warranty period, we will repair or replace at no charge a calculator that proves defective provided you ship it prepaid and insured to Jobber Instruments with proof of purchase.