Add 2 1/2" to B & C dimensions when rubber end truck bumpers are provided.
Girder sizes with letter "C" indicate beams which are channel capped for additional stability.
S series bridge girders have 9°-30' tapered tread lower flange requiring tapered tread or crowned tread trolley wheels. "W" series bridge girders have flat tread lower flange requiring flat tread or crowned tread trolley wheels.
F dimension is measured from bottom of bridge girder up to underside of outrigger;- check hoist and trolley dimensions to insure proper clearance.
Dimension N, Dimension P, Dimension Q & Dimension V are for minimum size runway beams. For operation on larger size runways, dimensions N-V-P must be increased by 1/2 the runway beam flange width increase and dimension Q decreased by the same amount.