This photo provides an excellent comparison between the Budd Company's FLUTING, shown on the left, and Pullman-Standard / American Car & Foundry CORRUGATIONS, on the right. Fluting, by definition, denotes a CONCAVE cross-section, whereas corrugations are CONVEX, like corrugated cardboard. Budd cars all use square cross-section corrugations on the roof, and above the windows, except for the letterboard. The demotored RDC shown here, has a full-length letterboard, so there are no corrugations there in this case. The P-S and ACF cars apply the same "major-minor" corrugation pattern above and below the windows. However, many ACF cars and later P-S cars have taller windows, and so will have one less corrugation of each size above the windows. The number of corrugations below the windows, on P-S and ACF cars, may vary depending upon the design of skirting, or lack thereof, as specified by the individual railroads.
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I really like the color and texture. Well done.
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