. The Street railway journal . and Wabash Valley Tr. High Speed Curves Key to Spiral Tables. l^lDtersection AngleT-Tangent Distance from -Length of I For Simple Curve Tan !- (R+O) Tan ^ I+VqB RadluB of Simple Curve0 Tangent Otf 3ot;3)0 X (11 Verain A) Sum of Central Anglesof Spiral Sum of CoBiDOS of the DDepartures ^^M^ for ill Practical PurposesX- Ordinates V -- AbsciasaeTan. of Def 1. Angle for any Point on Spiral ^ X Y Directions to Linemen, At Llue of no Elevation TrolleyOccupies PositionA-B At Line ofMaxiniUTn ElevationTrolley Oc

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. The Street railway journal . and Wabash Valley Tr. High Speed Curves Key to Spiral Tables. l^lDtersection AngleT-Tangent Distance from -Length of I For Simple Curve Tan !- (R+O) Tan ^ I+VqB RadluB of Simple Curve0 Tangent Otf 3ot;3)0 X (11 Verain A) Sum of Central Anglesof Spiral Sum of CoBiDOS of the DDepartures ^^M^ for ill Practical PurposesX- Ordinates V -- AbsciasaeTan. of Def 1. Angle for any Point on Spiral ^ X Y Directions to Linemen, At Llue of no Elevation TrolleyOccupies PositionA-B At Line ofMaxiniUTn ElevationTrolley Occupies Positiuu A-C Per Helyht of Trolley of 20 Super-elevationBy to Obtain Throw. B- C Standard 400 Curve,. Note: In Tables 2. & 3. forLV ndDeflection Angle, 0A(£i- Def. Angle ) use theLinexjurft above the Line on which the Central SimpleCurve Is Jnscribeil. Form for Field Notes.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884