Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

741 INDEX. PAGE Traction on Roads .. ..211 Tractive Force of Horses 241 ------‘— Power of Loco- motives .......... 221,225 Trade Regulations, Board of__________________188 Trains, Harding’s Formula 2.2 ------Resistance of .. 222 ______Speed, Table for .. 214 Treenails, Shearing of .. 27 Trial and Error .. .. 624 Triangles, Areas of .. ..616 _________ ---------Plane .. . • 616 ---------Right-angled .. 617 _________ ---------Spherical .. 619 Trigonometrical Equiva- lents ..............614 _______________Expres- sions ..............615 _______________Formulae 618 _______________ Functions 616 _--------------Signs .. 607 ____________ ________________Ratios .. 614 _______________ Surveying 4 ---------------Table of I’AGK Turbines, High-pressure.. 541 ________Low-pressure .. 53.8 ________Shafts of .. .. 338 Turning, Speeds for .. .. 439 Undershot Water-wheels 529 Union, German Railway 196 Units, Conversion of .. 301 _____Electromagnetic .. 300 Useful Angles for Curves 218 ------Knots..........56 ------Memoranda for Hy- draulic Calculations .. 243 _______________:— Steam- ships ..............568 ------Numbers for Pumps 283 _______________in Sur- veying .............. 3 Valve Motion, Joy’s .. 497 Valves, Lap and Lead of . 486 ------ Safety, Area of .. 490 ------—--French . Practice..............491 ___________ Proportions of 490 ------Slide ..........486 Varnish, Copal .. .. .. 429 ________ ------Spirit..........429 Velocities, Mean and Sur- face ..................... •• •• 264 Velocity of Falling Bodies 382 __________ ------------- Influx .. .. 450 ________ Light .. ..381 _________ Shot .. .. 574 __________ Sound .. .. 381 Water at Dif- __________ ferent Heads.. ______245 _________________ from. Orifices.............. _________________Surface 264 Vena Contract» .. •• Ventilation ..........374 __________ in Collieries .. 448 Tunnels .. 37 3 ____________ __________ of Water-wheels 535 ______________________ Natural Sines, &c. .. 621 Trigonometry.........614 __,_________Spherical.. Ö19 _____________ -------------Value of Sines and Cosines .. .. 614 Truss Bridge, American 1T8 -----Queen .. .. .. 13* -----Single _________13+ Trussed Beams.. .. .. 134 Tubes, Friction of Air in 457 ----—■ Pneumatic .. .. 550 ---Surface of .. 45T ---Weight of Brass .. 48 Tubing, Gas _________4" Tubular Boilers .. .. *63 Tunnels .. •. •• ..106 ________Ventilation of .. 372 Turbines, Foumeyron’s - • 540 --------Jonval’s .. . ■ 535