Appendix. Conversion Factors LENGTH

Transcription

1 Appendix Conversion Factors * LENGTH Inches feet angstrom units 2.54 x 10 8 micros millis 25.4 centis 2.54 s Feet inches 12.0 angstrom units x 10 9 micros millis centis s Millis inches x 10-2 feet x 10-3 angstrom units 1 x 10 7 micros 1 x 10 3 centis 1 x 10-1 s 1 x 10-3 Centis inches feet angstrom units 1 x 10 8 micros 1 x 10 4 millis 10 s 1 x 10-2 Meters inches feet angstrom units 1 x micros 1 x 10 6 millis 1 x 10 3 centis 1 x 10 2 Yard feet 3 centi Angstrom units inches x 10-9 feet x micros millis 1 x 10-7 centis 1 x 10-8 s 1 x Micros inches x 10-5 feet x 10-6 angstrom units 1 x 10 4 millis 1 x 10-3 centis 1 x 10-4 s 1 x 10-6 * For additional information, see American Society for Testing and Materials, Metric Practice Guide, ASTM E , 34 pp., 1973; International Organization of Standardization International Stardt, SI Units, and Recommendations for the Use of their Multiples and Certain Other Units, Ref. No. ISO (E), 21 pp., 1973; National Bureau of Standards, Engineering Standards, U.S. Metric Study, NBS SP , 250 pp.,

2 816 Appendix AREA FORCE Square s square feet square centis 1 x 10 4 square inches Square feet square s x 10-2 square centis square inches 144 Square centis square s 1 x 10-4 square feet x 10-3 square inches Square inches square s x 10-4 square feet x 10-3 square centis Square yard acres x 10-4 square feet 0 square centis square miles x 10-7 Acres square s square feet yards 4840 VOLUME Cubic centis cubic s 1 x 10-6 cubic feet x 10-5 cubic inches Cubic s cubic feet cubic centis 1x 10 6 cubic inches Cubic inches cubic s x 10-5 cubic feet x 10-4 cubic centis Cubic feet cubic s cubic centis cubic inches 1728 U.S. gallons (gal) cubic centis 3785 cubic s x 10-3 cubic feet cubic inches 231 cubic yards 4951 x 10-3 British Imperial gallons liters Pounds dynes x 10 5 grams kilograms tons (long) x 10-4 tons (short) 5 x 10-4 kips 1 x 10-3 tons (metric) x 10-4 Kips pounds 1000 tons (short) kilograms tons (metric) Kilograms dynes grams 1000 pounds tons (long) x 10-4 tons (short) x 10-4 kips x 10-3 tons (metric) Tons (short) kilograms pounds 2000 kips 2 tons (metric) Tons (metric) grams 1 x 10 6 kilograms 1000 pounds kips tons (short) Pound force (lbf) newtons 4.45 Kilogram force (kgf) newtons 9.81 VELOCITY Centis/sec microns/ 10,000 s/minute feet/minute miles/hour feet/year Microns/ centis/ s/minute feet/minute miles/hour feet/year

3 . Conversion Factors 817 Feet/minute centis/ microns/ s/minute miles/hour 9, feet/year Feet/year microns/ centis/ s/minute x 10-7 feet/minute x 10-6 miles/hour x 10-8 Miles/hour centis/ s/minute feet/hour feet/minute 88 feet/ miles/ x 10-4 minutes 1440 hours 24 months x 10-2 years Months millis x 10 9 s x 10 6 minutes hours 730 days years Years millis x s x 10 7 minutes hours (mean solar) 8760 days (mean solar) 365 months 12 TIME STRESS Millis s 10-3 minutes x 10-5 hours x 10-7 days x 10-8 months x years x Seconds millis 1000 minutes x 10-2 hours x 10-4 days x 10-5 months x 10-7 years x 10-8 Minutes millis s 60 hours days x 10-4 months x 10-5 years 1/ x 10-6 Hours millis s 3600 minutes 60 days months x 10-3 years x 10-4 Days millis s Pounds/square pound/square 144 inch feet of water kips/square kilograms/square centi tons/square atmospheres kilopascals 6.9 Pounds/square pounds/square inch feet of water kips/square 1 x 10-3 kilograms/square centi tons/square atmospheres x 10-4 pascals 47.9 Feet of water (at pounds/square inch F) pounds/square kilograms/square centi tons/square atmospheres inches of Hg

4 818 Appendix pounds/square inch pounds/square 1000 Kips/square tons(short)/square kilograms/square centi tons(metric)/square Kilograms/square pounds/square inch centi pounds/square feet of water (39.2 F) kips/square tons/square 10 atmospheres Tons (short)/ atmospheres square kilograms/square centi tons(metric)/square pounds/square inch pounds/square 2000 kips/square 2.0 Tons (metric)/ kilograms/square 0.10 square centi pounds/square kips/square tons (short)/square Atmospheres bars centis of 76 mercury at 0 C millis of 760 mercury at 0 C feet of water at F kilograms/square centi grams/square centi kilograms/square tons (metric) /square pounds/square pounds/square inch tons(short)/square Newtons/square pascals 1.00 UNIT WEIGHT Grams/cubic centi kilograms/cubic Pounds/cubic inch Pounds/cubic Tons(metric)/ cubic tons(metric)/cubic 1.00 kilograms/cubic pounds/cubic inch pounds/cubic grams/cubic centi tons(metric)/cubic pounds/cubic inch x 10-5 pounds/cubic grams/cubic centi tons (metric)/cubic kilograms /cubic pounds/cubic 1728 grams/cubic centi tons(metric)/cubic kilograms/cubic pounds/cubic inch x 10-4 grams/cubic 1.00 centi kilograms/cubic pounds/cubic inch pounds/cubic

5 . Conversion Factors 819 COEFFICIENT OF CONSOLIDATION, C V Square square centis/ x 10 7 centis/ year square s/year x 10 3 square inches/ square inches/year x 10 6 square feet/ year x 10 4 Square inches/ square inches/year x 10 7 square feet/year x 10 5 square centis/ square centis/ x 10 8 year square s/year x 10 4 COEFFICIENT OF THERMAL CONDUCTIVITY, k Btu/hr-ft 2 -( F/ft) cal/sec-cm 2 -( C/cm) x 10-3 W/cm 2 -( C/cm) Btu/hr-ft 2 -( F/ft) W/cm 2 -( C/cm) cal/sec-cm 2 -( C/cm) TEMPERATURE 5 T 9 9 T ( F ) = T ( C) T K = T C ( C) = [ T( F ) 32 ] ( ) ( )

6 820 Appendix