Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Description: Chart of catenary curve ordinates: "The curve gives approximate values of sag at all points on the catenary curve expressed in per cent of the center sag. The error is negligible for all spans in which the center sag is less than 10% of the span length." It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Contributing Partner: UNT Libraries Government Documents Department