Document 6RVq3ewYQk0yo271X8ma3ZEbE

American Society of Heating and Ventilating Engineers Guide, 1930 Short words such as ton, day, and mile are spelled out. Do not use abbreviations where the meaning will not be clear. In case of doubt, spell out. Do not use conventional signs for abbreviations in text; thus per, not /; lb., not #; in., not Such signs are used sparingly in tables and similar places for conserving space. The sub-committee recognizes a tendency toward the omission of the period in some technical abbreviations and favors the omission, except in cases of general literary composition, as being economical and conducive to the elimination of waste. Some mathematical arid chemical terms are, in preferred practice, customarily abbreviated without periods; thus sin,, log, Cu, etc. Do not space the letters of such abbreviations as A.S.H.V.E. (not A. S. H. V. E.). In text, do not use the exponents for the abbreviations of square and cube nor the negative exponents for terms involving per. The superior figureS are usually not avail able on the keyboards of typesetting and linotype machines and composition is therefore delayed. There is also the likelihood of confusion with footnote reference numbers! These shorter forms are permissible in tables and are sometimes difficult to avoid in text. Abbreviations In this initial list of abbreviations for engineering and scientific terms, only those most commonly used have been included. Absolute- ..abs Acre_____ Acre-feet ...........1.........spell out Air horsepower-- ______________ air hp. Alternating-current (adjective)__________ .a-c. American wire gage (Brown and Sharp)..B.&S. gage Ampere.____________amp. Ampere-hour________ _amp-hr. Angstrom unit_____ - ______ -A Antilogarithm____ !__ ..antilog. Armature--_________ Cirriilar circular mils__________________ ........ ..........cir. mils r.R Conductivity............. ................. -------------------.cond. P/instant atm CrwinA hhl. TV. Birmingham wire gage____________________ B.w.g. Board feet________ :_________________ _____ J.b.m. Counter electromotive force__ ______counter emf Cubic centimeter_____________ .cu. cm., cc (liquid) Cubic foot-____ ._____________ ......................cu. ft. . b.hp. Brake horsepower-hour__-__________ ___ b.hp-hr. Brinnell hardness number.___________ ...___ B.h.n. R.fn . hdt. >l Centi meter____ _________ ._____ ..._....________.cm Centimeter-gram-second______________________ cgs Cent........... -- :............ -- .............. ............ -.-C. Cubic yard___________________ ___________cu. yd. Cylinder. .... --............ -- -- Degree Centigrade..-.-------------Degree Fahrenheit;___________ .............. ......... .... F K Degree Rfcaumur-............... ...... ................... ....... R rtiam Direct-current (as adjective).... --..... .. .......--d-c. Dollar.................--------------------........ --..................$ A. 5. A. 530 Chapter 34--Symbols and Abbreviations Dozen. Dram- East----------------- i----------------East-northeast------ ----------East-southeast-------------------Electric.--- ----------------------- Electric horsepower---------. Electrical Engineer------------Electromotive force----------Elevation--..--------- ---- _doz. __.dr. ___ E .ENE _ESE ...elec. _e.hp. --- ~--------.emf __ -__ ___--el. Farad--------------------------------Feet board measure----------Feet per minute______ ____ Feet per second----- ------------ Fluid Foot Foot-candle---- -----------------Foot-Lambert.-- Foot-pound--------- -------------Foot-pound-second system. ________f.b.m. _______ i.p.m. -------- ----f.p.s. ___________ JL -------------ft-c. --------------- ft-L. _________ ft-lb. ----------------fps Free aboard ship--------------Free alongside ship.------Free on board_____ _______ Freezing point-------- ---------Frequency,_________ .______ Furlong.--,------- ----------------- ,,spell out -spell out ____f.o.b. _____ J-P. ____ireq. ______Jut. Gallon*----------------------------------------------- .---gal. Gallons per minute.----------------------------------- g.p.m. Gallons per second.g.p.s. Generator_____--------------------------------- -----------gen. Grain. .--spell out Gram..______________________________ ___spell out Gram-calorie------------------------- g-cai Lambert--^...._____________________ -X Latitude.iat. Least common multiple-..__________. Lineal foot---------------- ------ --------------- .---------iin. ft. Link-------------- -------------------------------------------------- 1. Liraspell out Liter--------------.------------ ----------- ----- *.--1 , Liquid.liq. Logarithm--________________________________ Jog Longitude.----------- -------------------------------- .------ long. Low-pressure cylinderL.P. cyl. Lumen-____________________________ ___ ..1 Lumen-hour________________1-hr. Lumens per watt_____________________l.p.w. Magnetomotive forcemmf Mark--------------------------------------- ------------- -----.M. Mass.________ _____________ ________spell out Master Car Builders' Standard______ M.C.B. Std. Mathematics (ical)___--math. Maximum_________________ _____________ ...max. Mean effective pressurem.e.p. Mean horizontal candlepower____________ m.h.cp. Mean spherical candlepower.______ ______ m.s.cp. Mechanical Engineer.M.E. Megawatt------------- -------------------------------.spell out Megohm------- -------- ------------- :--.--------------------meg Melting point.. ; --m.p. . Meter.---- ------ m , Meter-kilogram-----.------------- ----------- --___ --m-kg Mho------------------- ----------------------- .--------.spell out- Microfarad-------- -------- -----------------------------. --uf Micromicron____________________--------------------uu Micron--------- u Microwatt.-------------------- ------------------------.spell out Mile_______________ .--spell out Miles per hour.--________ m.p.h. Hectare-- -----------------------.---------------.--:-------- ha Henry--------- ----------------------------------------------------- h High-pressure cylinderH.P. cyl. Miles per hour per second________ m.p.h. per sec. Milliampere___________________________ milliamp. Milifarad-____ _____________________________ mf Hogshead__--hhd Horsepower________________ ________ ..hp. Horsepower-hour_________ hp-hr. Hour_______ _______________ --hr. Milligram__________._______________ -------------mg Milihenry.......................--------------------------------- mh Millilambert_._____ mL Milliliter-_________..,____ml Hundredweight (112 lb.)cwt. Hyperbolic sine.sinh Hyperbolic cosine___________________ cosh Inch---------------------------------- --------------------------- in. Inch-pound.in-lb. Inches per second;i.p.s. Indicated horsepower___-i.bp. Indicated horsepower-houri.hp-hr. Intermediate-pressure cylinder.I.P. cyl. Millimeter............................................................ .mm Millimicron________ _______ _---------------------------mu Million-------------------- ------- --------spell out Million gallons per day------------------- ----._m.g.d. Millivolt............ ....................... .......------------- ,.mv Mining Engineer-....................... -- E.M. Minute______________ --_:--------------------------- min. Molecular weight--.......... .................. --mol. wt. Molecule._____ _____ ____ --------------------------- mol. Internal______________ _______*int. National Electric Code........................... --N.E.C. Kilogramkg Kilogram-meter_______ kg-m Kilograms per cubic meter..kg per cu. m. Kilograms per secondkg per sec. KiloIiter.J-------------------------- ----------------------- ------kl North________________ ___ ____ ___________ ,_____N Northeast....... ...... -.... ---------- .-.-------NE North-northeast...................-____ _________--NNE North-northwest.............................. ,--NNW Northwest............... ...... ...NW Kilometer.--..__________________ km Ohm...............................................----spell out or Q Kilometers per second_______________km per sec. Ohm-centimeter._________________ ohm-cm Kilovolt..._______________ kv Kilovolt-ampere.--------------- ------ kv-a Kilowatt__________________________________ kw Kilowatt-hour____________ ______ --------------kw-hr. OuncelJ-.-............... oz. . Parts per million-................----p.p.m. Peck.--_____________________________________ pk. 531