6th progress report
I. IDENTIFICATION OF SPECIMENS. The method of designation used hitherto is not sufficiently differentiated to identify the present and future specimens since specimens with identical bottom flanges but different top flanges are used. For this reason from now on each specimen is designated by symbols and figures, for example D-18-16-88a in which: D designates a series of beams, 18 designates the gage of mterial used for web and bottom flange, 16 designates the gage of material used for the top flange, 8 designates the depth of the section in inches, 8 designates the width of the bottom flange in inches, "a" designates the particular beam if duplicates are submitted. In the present and future tests of the specimens given on drawins 63 and 64 of the summary report, the letter D refers to the beams without stiffeners on the bottom flange (left oclumns of these drawings) and E to those with stiffeners (right columns).
Civil, Architectural and Environmental Engineering
American Iron and Steel Institute
Wei-Wen Yu Center for Cold-Formed Steel Structures
01 Jan 1940
Cornell University School of Civil Engineering, "Cornell University School of Civil Engineering Tests on light beams of cold-formed steel" (1940). CCFSS Library (1939 - present). 202.