pipeline rules of thumb handbook, 7th edition

[...]... worth of $1.00 per period where: P ¼ a present sum of money S ¼ a sum of money at a specified future date R ¼ a uniform series of equal end -of- period payments n ¼ designates the number of interest periods i ¼ the interest rate earned at the end of each period General Information Mathematics—areas 3 4 Pipeline Rules of Thumb Handbook Mathematics—surfaces and volumes General Information 5 Rules of exponents... anchored at a horizontal distance of 170 ft from the mast and the elevations of the guy anchorages are 10 ft below the base of the mast The load on the structure is If erection tension is 10% of total working tension, 5,714 is 90% of total working tension Therefore, working tension ¼ (5,714 Â 100)/90 ¼ 6,349 lb 12 Pipeline Rules of Thumb Handbook Strength and weight of popular wire rope The following... Diameter of driving pulley 24 inches RPM1 ¼ 100 (Driving pulley speed) d2 ¼ 24 Â 100 ¼ 4 inches 600 RPM2 ¼ Speed of driven pulley ¼ 600 Diameter of Driving Pulley Required D1 d2 RPM2 RPM1 ¼ ¼ ¼ ¼ D1 ¼ inches 36 inches 150 600 36 Â 150 ¼ 9 inches 600 6 Pipeline Rules of Thumb Handbook Speed of Driving Pulley Required A D2 ¼ 4 inches RPM2 ¼ 800 D1 ¼ 26 inches B C 4 Â 800 ¼ 123 RPM1 ¼ 26 D Speed of Driven... Determine pulley speed Speed of Driven Pulley Required: Diameter and speed of driving pulley and diameter of driven pulley are known D1 RPM1 d2 RPM2 ¼ ¼ ¼ ¼ RPM2 ¼ Diameter of driving pulley 15 inches 180 (Driving pulley speed) Diameter of driven pulley 9 inches Speed of driven pulley 15 Â 180 ¼ 300 RPM 9 Diameter of Driven Pulley Required: Diameter and speed of driving pulley and speed of driven pulley are... in inches; count the number of turns; multiply the sum of the two measured diameters by the number of turns, and multiply this product by 0.13; the result is the total length of the material in feet Example A roll of belting contains 24 turns The diameter of the hole is 2 in., and of the outside of the roll is 13 in ð2 þ 13Þ Â 24 Â 0:13 ¼ 46:8 The roll contains 46.8 feet of belting Note: The rule can... 1.06 1.32 1.61 1.92 2.26 2.63 3.03 3.45 4.38 5.43 5.56 6.58 6.73 7.85 8.01 9.40 10.90 12.52 14.24 18 Pipeline Rules of Thumb Handbook Properties of shafting SECTION MODULUS Diameter of Shaft, Inches Area of Shaft Weight per Inch Weight per Foot MOMENT OF INERTIA Bending Bending Torsion Torsion Radius of Gyration /16 0.6903 0.195 2.34 0.0809 0.1618 0.0379 0.0758 0.2343 13/16 ... 1970 3280 5470 8 Pipeline Rules of Thumb Handbook CABLES AND ROPES Estimating strength of cable Rule 1 2 3 4 Diameter ¼ Change line diameter to eighths Square the numerator Divide by the denominator Read the answer in tons 1 4 ¼ 2 8 42 16 ¼ ¼2 8 8 The approximate strengh of 1/2 -in steel cable is 2 tons Example Estimate the strength of 1/2 -in steel cable: Find the working strength of Manila rope The... or platform The use of chains for lashing, or the use of lever against rope instead of flange Nailing through rope to flange e f Wire-Rope Trouble Cause i Lengthening of lay and reduction of diameter Frequently produced by some type of overloading, such as an overload resulting in a collapse of the fiber core in swabbing lines This may also occur in cable-tool lines as a result of concentrated pulsating... measuring the deflection at the center of the span from the chord drawn from the guy anchorage to the point of support on the structure A good average figure to use for erection tension of guys is 20% of the maximum working tension of the guy This discussion outlines the method for determining the stresses in guys One of the first considerations is the location of the guy anchorages The anchorages should... Contents 17: Leak Detection, 605 Pipeline leak detection techniques Summary Introduction Causes and economic aspects of leaks Simple leak detection systems Pig-based monitoring systems Computer-based monitoring systems Pipeline leak phenomena Background philosophy of pipeline modeling Basic pipeline modeling equations Impact of instrument accuracy . earned at the end of each period 2 Pipeline Rules of Thumb Handbook Mathematics—areas General Information 3 Mathematics—surfaces and volumes 4 Pipeline Rules of Thumb Handbook Rules of exponents a n Â. the present worth of $1.00 per period. where: P ¼a present sum of money S ¼a sum of money at a specified future date R ¼a uniform series of equal end -of- period payments n ¼designates the number of interest. gas 357 Flow of fuel gases in pipelines 358 Calculate the velocity of gas in a pipeline 359 Determining throat pressure in a blow-down system 359 Estimate the amount of gas blown off through a