Please enable JavaScript.
Coggle requires JavaScript to display documents.
CURVES (IMPORTANT TERMS (FORWARD TANGENT, POINT OF INTERSECTION, BACK…
CURVES
IMPORTANT FORMULA
LONG CHORD = 2R sin D/2
MIDORDINATE DISTANCE = R[1-cos D/2 ]
TANGENT LENGTH = Rtan D/2
APEX DISTANCE = R[ sec D/2 - 1 ]
SETTING OUT OF CURVE
LINEAR METHOD
OFFSET FROM BISECTION OF ARC
OFFSET FROM LONG CHORD
OFFSET FROM TANGENT
RADIAL OFFSET
PERPENDICULAR OFFSET
ANGULAR METHOD
TWO THEODOLITE METHOD
TACHEOMETRIC METHOD
RANKINE METHOD
IMPORTANT TERMS
FORWARD TANGENT
POINT OF INTERSECTION
BACK TANGENT
POINT OF TANGENCY
POINT OF CURVATURE
DEFLECTION ANGLE
CLASSIFICATION
VERTICAL
HORIZONTAL
CIRCULAR
COMPOUND
REVERSE
SIMPLE
TRANSITION
COMBINED
DESIGNATION OF CURVE
ARC DEFINITION
DEGREE IS ANGLE SUBTENDED AT CENTER BY ARC LENGTH OF 30m (or) 20m
CHORD DEFINITION
DEGREE IS ANGLE SUBTENDED AT CENTER BY CHORD OF 30m (or) 20m