. PennsylvaniaFrederick S. Merritt EditorLate Consulting Engineer, West Palm Beach, FloridaThird Edition McGRAW- HILL, INC.New York San Francisco Washington, D.C. Auckland Bogota´Caracas Lisbon London. L. Brockenbrough, Sec. 9 in Standard Handbook for Civil Engineers, 4th ed., F. S.Merritt, ed., McGraw- Hill, Inc., New York.)1.2 STEEL-QUALITY DESIGNATIONSSteel plates, shapes, sheetpiling,. Merritt, Frederick S.TA684.S79 1994624.1Ј821—dc20 93-38088CIPCopyright᭧ 1999, 1994, 1972 by McGraw- Hill, Inc. All rights reserved.Printed in the United States of America. Except as permitted...