The Civil Engineer's Handbook: A Convenient Reference Book for Chainmen, Rodmen, Transitmen, Levelers, Surveyors, as Well as Draftsmen, Computers, and Railroad, Municipal, and Hydraulic EngineersInternational textbook Company, 1913 - 411 σελίδες |
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Αποτελέσματα 1 - 5 από τα 39.
Σελίδα 34
... reading of the south end of the needle . In order to read either end of the needle accurately , the eye should be directly above a line in the prolongation of the oppo- site end of the needle . Then reverse the compass end for end and ...
... reading of the south end of the needle . In order to read either end of the needle accurately , the eye should be directly above a line in the prolongation of the oppo- site end of the needle . Then reverse the compass end for end and ...
Σελίδα 35
... readings of its opposite ends ; then remove the needle from the pivot and bend the pivot carefully at right angles to this position an amount equal to one - half the error . Repeat the operation until the needle cuts accurately all ...
... readings of its opposite ends ; then remove the needle from the pivot and bend the pivot carefully at right angles to this position an amount equal to one - half the error . Repeat the operation until the needle cuts accurately all ...
Σελίδα 42
... reading of the vernier . If the least reading of the vernier is denoted by r , the smallest subdivision of the main scale by s , and the vernier is divided into n equal parts , then S r = - n For example , if the smallest division of a ...
... reading of the vernier . If the least reading of the vernier is denoted by r , the smallest subdivision of the main scale by s , and the vernier is divided into n equal parts , then S r = - n For example , if the smallest division of a ...
Σελίδα 43
... reading . The circle is divided into degrees and halves , and the vernier is divided into 30 equal parts covering 29 ... reading of the vernier is 1 ' , its reading , in this case , is 23 ' . The reading of the scale , up to the division ...
... reading . The circle is divided into degrees and halves , and the vernier is divided into 30 equal parts covering 29 ... reading of the vernier is 1 ' , its reading , in this case , is 23 ' . The reading of the scale , up to the division ...
Σελίδα 44
... reading of the instrument is 105 ° 37 ' . The vertical circle , or arc , V , of the engineers ' transit , Fig . 1 , is often graduated to degrees and halves , and the vernier v ' , which is double , like the vernier of the horizontal ...
... reading of the instrument is 105 ° 37 ' . The vertical circle , or arc , V , of the engineers ' transit , Fig . 1 , is often graduated to degrees and halves , and the vernier v ' , which is double , like the vernier of the horizontal ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
accompanying table adjustment angles of repose axis azimuth backsight beam bearing bending brick bubble called cement center line center of gravity chain chord circle circular curve clamp coefficient column computed concrete correction cross-hairs cross-section cubic curvature degree of curve determined diameter discharge distance dumpy level elevation equal factor of safety feet formula friction frog given horizontal Inches instrument intersection latitude length line of sight load located longitude longitude range material maximum means measured meridian method moment of inertia mortar pavement perpendicular pipe plane plane table Portland cement position Pounds pressure prismoid radius rail railroad railroad switch ratio reading rivet sand sewer shear shearing stress shown in Fig side slope spiral square stadia stake station steel stone strength stress subgrade surface survey tangent telescope tion track transit triangle tube turnout velocity vernier vertical volume wall weight
Δημοφιλή αποσπάσματα
Σελίδα 4 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal.) 31| gallons = 1 barrel (bbl.) 2 barrels...
Σελίδα 2 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 2 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq. yd.) 30^ square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 5 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 343 - The pressure of a liquid on any surface immersed in it is equal to the weight of a column of the liquid whose base is the surface pressed, and whose height is the perpendicular depth of the center of gravity of the surface below the surface of the liquid.
Σελίδα 6 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg...
Σελίδα 6 - MEASURES OF CAPACITY 10 milliliters (ml.) = 1 centiliter (cl.) 10 centiliters = 1 deciliter (dl.) 10 deciliters = 1 liter (1.) 10 liters = 1 dekaliter (Dl.) 10 dekaliters = 1 hektoliter (hi.) 10 hektoliters = 1 kiloliter (kl.) MEASURES OF WEIGHT 10 milligrams (mg.) = 1 centigram (eg.) 10 centigrams = 1 decigram (dg.) 10 decigrams = 1 gram (g.) 10 grams...
Σελίδα 405 - The pulverized carbonate of lime, granite, or quartz while cold shall be mixed with the hot sand in the required proportions, and then mixed with the asphaltic cement, at the required temperature and in the proper proportion, in a suitable apparatus, so as to effect a thoroughly homogeneous mixture.
Σελίδα 2 - 1 Square Chain . sq. ch. 10 Square Chains " 1 Acre A. 640 Acres " 1 Square Mile . . sq. mi. 36 Square Miles (6 miles square)
Σελίδα 3 - TROY WEIGHT. 24 grains (gr.) 1 pennyweight (pwt.) 20 pennyweights, 1 ounce (oz.) 12 ounces ... 1 pound (Ib.) Troy weight is used in weighing gold, silver, precious stones, etc. APOTHECARIES