background image

- 39 -

APPENDIX

Area Formulas

Circle

Triangle

Sphere

Cylinder

ab

2

r

a

b

r

I

r

p

r

2

4

p

r

2

2

p

r(r+I)

- 40 -

APPENDIX

Volume Formulas

Sphere

Cylinder

Cone

4

p

r

3

3

p

b

a

12

r

I

a

b

r

p

r

2

I

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APPENDIX

Lumber Sizes

Normal Size

Actual Size (S4S)

1" x 2"

3/4" x 1 1/2"

1" x 3"

3/4" x 2 1/2"

1" x 4"

3/4" x 3 1/2"

1" x 6"

3/4" x 5 1/2"

1" x 8"

3/4" x 7 1/4"

1" x 10"

3/4" x 9 1/4"

1" x 12"

3/4" x 11 1/4"

2" x 2"

1 1/2" x 1 1/2"

2" x 3"

1 1/2" x 2 1/2"

2" x 4"

1 1/2" x 3 1/2"

2" x 6"

1 1/2" x 5 1/2"

2" x 8"

1 1/2" x 7 1/4"

2" x 10"

1 1/2" x 9 1/4"

2" x 12"

1 1/2" x 11 1/4"

4" x 4"

3 1/2" x 3 1/2"

4" x 6"

3 1/2" x 5 1/2"

4" x 8"

3 1/2" x 7 1/4"

4" x 10"

3 1/2" x 9 1/4"

4" x 12"

3 1/2" x 11 1/2"

Summary of Contents for DT220

Page 1: ...Weight Conversions 17 Liquid Conversions 17 Temperature Conversion 17 Paperless Tape Review 18 19 EXAMPLE PROBLEMS 20 35 Complex Area 20 Carpentry Rough Opening 21 Carpentry Joist Numbers 21 CONTENTS...

Page 2: ...ys Percent is used to find a given percentage of a number 6 2ND X2 is used to take the square quantity multiplied by itself of the number on the display No operation is performed if the square of an a...

Page 3: ...ter and convert pounds lbs 2ND kg Use to enter and convert kilograms DryOz Dry Oz use to enter and convert Dry Ounces DryOz 2ND grams Use to enter and convert grams Dimension Keys Mile Mile Use for en...

Page 4: ...alley length If an irregular pitch 2ND H V is entered first then the irregular hip valley will be shown H V 2ND Irregular Pitch is used to change the regular pitch value for determining lengths of irr...

Page 5: ...4 5 Enter 7 Ft 0 3 64 INCH Feet 32 4 1 2 3 4 5 Enter 2 5 Inch 5 2 Inch 4 5 14 GETTING STARTED DEFAULT SETTINGS Reduced Fraction Mode Your calculator is set to Reduced Fraction mode which give the mos...

Page 6: ...isplayed Convert 10 pounds 10 lbs 10 LB To kgs 2ND kg 4 535924 KG Liquid Conversions Key Sequence Result Displayed Convert 10 Gallons 10 Gal 10 GL To Liters 2ND Gal 37 85412 L Temperature Conversion K...

Page 7: ...4 Tape 04 6 Tape 05 7 Tape 06 10 19 GETTING STARTED To review in the reverse direction Note If more than one series of calculations have been performed the Paperless Tape will only review the last se...

Page 8: ...dd to memory Find Area of c Enter Feet Inch 5 3 0 3 5 3 Answer 87 5 SQFt Press M to store in memory Press RCL RCL to recall 125 total SQ Ft then multiply by depth Inch 4 3 5 Answer 41 66667 CU Ft To c...

Page 9: ...nd you require shorter risers 5 and wider treads 3 for physically challenged user Operation Reset Enter CE CLR CE CLR Display 0 Operation Enter Height Enter Rise Feet 3 Display RISE 3 Ft 0 INCH Operat...

Page 10: ...c foot of lumber conversions can only be done to and from other cubic measurements Circle Solutions After entering the diameter of a circle the Circle function is used to find the circumference and ar...

Page 11: ...12 thus a 4 12 roof has a SLOPE of 4 when entering SLOPE always use inches In Metric pitch is expressed in millimeters over 1 000 millimeters of run Enter Display Pitch Inch 4 PTCH 4 INCH Run Feet In...

Page 12: ...d on center spacing applies to main roof and 18 on center spacing applies to hip roof Fix Fraction to 8ths Operation Change Fixed Fraction Key Sequence 8 2 2ND 2ND Display Fix 0 Operation Run Key Sequ...

Page 13: ...re possible Don t leave the calculator on when not in use NOTE To save the battery calculator will turn off automatically after 10 12 minutes of inactivity at which time the displayed value and memory...

Page 14: ...rmal Size Actual Size S4S 1 x 2 3 4 x 1 1 2 1 x 3 3 4 x 2 1 2 1 x 4 3 4 x 3 1 2 1 x 6 3 4 x 5 1 2 1 x 8 3 4 x 7 1 4 1 x 10 3 4 x 9 1 4 1 x 12 3 4 x 11 1 4 2 x 2 1 1 2 x 1 1 2 2 x 3 1 1 2 x 2 1 2 2 x 4...

Page 15: ...are designed to provide reasonable protection against harmful interference in a residential installation This device generates uses and can radiate radio frequency energy and if not used in accordance...

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