Flat Bottom Rail

Rail profile for flat bottom rail measures the shape of the cross-section and compares it with ideal shape of a new rail which has not been worn. If a track consists of more than one type of rail, information on rail type and ideal profiles is mandatory to make wear measurements. These comprise of vertical rail wear, guage and field lip, guage rail wear, cross-sectional area, side rail wear, head surface defects and field rail wear.