Book of StandardsNational tube Company, 1913 - 553 σελίδες |
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Αποτελέσματα 1 - 5 από τα 48.
Σελίδα 112
... stress exceeding two - thirds of the former figure . The deflection tests are limited to loads that produce about 18 000 pounds per square inch fiber stress . The stiffness of poles depends upon the modulus of elas- ticity of the ...
... stress exceeding two - thirds of the former figure . The deflection tests are limited to loads that produce about 18 000 pounds per square inch fiber stress . The stiffness of poles depends upon the modulus of elas- ticity of the ...
Σελίδα 117
... stress of a " static load . " If wires are insulated , the outside diameter of insulation must be used in reckoning ... stress may be omitted when computing column strength when the wind stress is less than 25 to 30 per cent . of the ...
... stress of a " static load . " If wires are insulated , the outside diameter of insulation must be used in reckoning ... stress may be omitted when computing column strength when the wind stress is less than 25 to 30 per cent . of the ...
Σελίδα 119
... stress in the material . Column headed " Load ( L ) for deflection D " gives the load that it is suitable to specify when poles must be tested for deflection . This deflection test load is about two - thirds of the maximum load P ...
... stress in the material . Column headed " Load ( L ) for deflection D " gives the load that it is suitable to specify when poles must be tested for deflection . This deflection test load is about two - thirds of the maximum load P ...
Σελίδα 190
... stress the thickness of a sphere would be half the thickness of a cylinder of same diameter , or for equal thick- ness the radius of the sphere would equal the diameter of the pipe . The same rule may be applied to the shape per Figs ...
... stress the thickness of a sphere would be half the thickness of a cylinder of same diameter , or for equal thick- ness the radius of the sphere would equal the diameter of the pipe . The same rule may be applied to the shape per Figs ...
Σελίδα 191
... stressed to s = 20 000 pounds per square inch by test pressure = p ; then an approxi- mate solution gives the thickness of heads stated in the following table for value of R and p ( in inches and pounds per square inch ) . R = radius of ...
... stressed to s = 20 000 pounds per square inch by test pressure = p ; then an approxi- mate solution gives the thickness of heads stated in the following table for value of R and p ( in inches and pounds per square inch ) . R = radius of ...
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Angle Valves Area beam bending boiler tubes cent column compression cubic feet cubic foot cubic inch Steel cylinders deflection Diam diameter in inches Dimensions are Nominal direct tabular values Distance Radius elastic limit Fahrenheit fiber squared fiber stress fitting flange Foot for Steel foot length formula gage globe valve head heat Hydrostatic Test inches For Tubes inertia inside diameter iron joint lap-welded Length of Pole Lineal Foot load L Factor material miner's inches moment of inertia Number of Weight Pipe and Tubing Pounds per Lineal pounds per square pressure in pounds Properties of Tubes Radius from axis radius of gyration Round Bars Continued seamless sizes specific square inch Standard pipe steam Steel Pipe strength swaging tabular values direct temperature Test pressure thickness of wall threads and couplings Tubes and Round Tubes use differences valve velocity volume of wall water hammer Weight per foot welded ΙΟ
Δημοφιλή αποσπάσματα
Σελίδα 36 - The permissible variation in weight is 5 per cent above and 5 per cent below. Furnished with threads and couplings and in random lengths unless otherwise ordered.
Σελίδα 484 - CHAIN TONGS.— A pipe-fitter's tool; a lever with a serrated end provided with a chain to enlace the pipe. The chain is wrapped around the pipe to hold the lever in place, and the teeth on the end of the latter grip into the pipe, thus affording a powerful leverage to screw or unscrew the joints.
Σελίδα 460 - System. The fundamental unit of the metric system is the METER — the unit of length. From this the units of capacity (LITER) and of weight (GRAM) were derived.
Σελίδα 312 - The following is a list of convenient equivalents for use in hydraulic computations : 1 second-foot equals 40 California miner's inches (law of March 23, 1901). 1 second-foot equals 38.4 Colorado miner's inches. 1 second-foot equals 40 Arizona miner's inches. 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per minute; equals 646,272 gallons for one day. 1 second-foot equals 6.23 British imperial gallons per second. 1 second-foot for one year covers 1 square mile 1.131...
Σελίδα 253 - The bending moment at any section of a beam is equal to the algebraic sum of the moments of the forces on either side of the section.
Σελίδα 320 - Mariotte.s law states that the volume of a gas varies inversely with the pressure to which it is subjected.
Σελίδα 460 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 510 - Wye; Y. A fitting either cast or wrought that has one side outlet at any angle other than 90°. Usually set 45", and always so set unless angle is specified. It is usually indicated by letter Y.
Σελίδα 499 - Packing. — (1) A general term relating to yielding material employed to effect a tight joint. A common example is the sheet rubber used for gaskets. The term is also applied to the braided hemp or metallic rings used in some joints, that allow considerable or incessant motion. The British grummet is another example.
Σελίδα 96 - The tensile strength, limit of elasticity, and ductility shall be determined from a standard test piece cut from the finished material. The standard shape of the...