Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

732 INDEX, PAGE Pedestals .. .. .. .. 413 Pendulum..................391 Penetration of Projectiles 577 Percussion, Centre of .. 391 Permanent Way .. .. 202 ---------------Indian State Railways .. .. 207 Persian Wheels .. .. 290 Phenomena, Tidal .. .. 9 Piers to sustain Equal Pressure.................91 j -----Loads on............. 91 Pig Iron, Classification of 34 Pike I,'river, Steam .. ..118 -----Driving..............116 Piles, Iron, for Retaining i Walls ................. 296 I --Hydraulic .. .. 120 -----Screw ............. 119 Piling, Sheet ............118 Shot and Shell .. 578 Pillars and Struts .. .. 115 Pine Beams, Safe Load on 125 Pins, Suspension . .. 186 Pipes, Bi nds in..........262 -----Cast-iron, Weight of 4Ö Coating for .. .. 281 -----------------------------Copper 51 —------- Weight of 61 -----Cylindrical .. .. 255 -----Delivery of Water in 253 -----Gas..................370 '----Glasgow Water- works .......................285 -----Iron, Wrought .. 50 -----r-Lead, Weight of .. 51 -----Motion of Gas in .. 369 -----Water iu 254 ---------------Water, Table of...............255 — Pro:-sure in .. ,. 284 —--Water .................284 -----— Weight, Rule for .. 284 Piston,EffectivePressure on 221 PAGE Piston, Speed of .. .. 502 --------—----in Locomo- tives -------502 Pitch of Screws.........566 —------Teeth of Wheels 400 Plane Surfaces, Friction of 420 -----Triangles .. 618 Plastering...............95 Plate Girders...........170 Plates, Buckled............lit ------Metal.................39 ------Thickness of, in Vessels........... ,, 554 Plotting Angles .. .. 7 ■—————— without Protractor ,. .. ,. 7 Plummer-blocks .. ,. 413 Pneumatic Transmission 550 Poinis and Crossings 209 --------------------Me- moranda on----------208 ------of the Ovmpass ,. 622 Polish, French..........428 Polishing Speed .. .. 438 Polygonal Framing .. 151 Polygons, Areas of .. ,. 359 --------Table of .. .. 659 Polyhedrons ...............659 Poncelet’s Water-wheel ., 530 Portland Cement .. ,. 96 Pounds and cwts........594 ----------ozs., Decimal Equivalents of ., ,. 594 ------Equivalent Rate? per cwt. and ton .. .. 595 Power, Adhesive, in Loco- motives ...............224 ------Animal.............529 ------gained by Blocks...436 ------for Different Pro- cesses in Iron-works .. 441 •-----for liaising Water from Wells.............290 ------Horse.............485