Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

725 ____________________________________________________ INDEX. PAGE Gradients, Table of.. .. 223 Grate Surface..........462 Gravity ................382 --------Centre of .. .. 386 --------------Co-ordi- ________________ nates of..........__ • • 386 ________________—■ in loco- motives .. .. .. .• 503 _________________________________Paral- lelograms ..........386 .-------------------Tri- angles ..............386 ____1------------------Vari- ous figures..........387 ________-—>— of Series of Lines .. .. .. • • 389 ___________________Two Bodies ..............38^ --------Resistance due to 223 --------Specific .. .. 390 Grease, Antifriction .. 424 Grinding, Spe d of .. .. 438 Gudgeons of Water-wheels 533 Guides for High-pfessure Turbines ..........541 ________— Low-pressure Turbines..............537 Gun-cotton ..........86 Gunnery, &c„ Field Earth- works .......... . ■ 579 --------------Gunpowder 576 ____________Penetration 577 --------------Piling of Shot and Shell .. .. 678 ____________Pointblank Ranges .. .... ■ • 575 I____________Projectiles 573 ____________ --------------Range of Floating Objects .. .. 578 _________.— Velocity of Shot....................574 I Guttapercha ..........336 I g, Value of ...................... 243 [ Gyration, Centre of .. .. 390 PAGE I Galvanizing Iron .. . • 421 Gas, Delivery of, in Pipes 370 • -Mains, Dimensions of 371 j -Motion of, in Pipes.. 369 -Pipe, Weight of .. 47 --Threads of Screws .. 419 -Tubing, Weight of .. 47 , ----Works ......... 368 I Purifiers for 369 ___________ Gases, Expansion of .. 365 ------Weight of .. .. 21 Gates, Lock, best Angle for 295 ___________Pressure on 295 Gauge, B.W. __...........592 ------Mercurial .. • • 450 ---of Railways .. .. 205 ---Railway Loading 205 .--Whitworth’s .. 418 Gauaina Road Metal >■ 242 ____Water .. ..251 Gearing, Hemp Rope .. 416 Geometrical Progression.. 613 Giffard’s Injector .. ..473 Gilbert’s Catenary .. ..352 GirdTS, Braced, Stress Diagrams for.. ■> •• 172 ______—Bowstring .. ..177 -----r— Cast-iron .. .. 169 -----Continuity of .. 163 _----Counter-bracing 166 -] leflection of 132, 165 -Lattice.. .. 1^1 --— Load on .. ..162 --Plate.........170 ------Safe limit of stress in........... •• .-1*0 ----Strains on .. ..175 ----Trussed .. •• ----Unequally Loaded 1 <3 ----Web Plates öf .. 171 ----Wrought iron .. 170 Glue Cement _________426 ----Marine .. ... . • 426 Governor, Steam-engine 494