JOINT COMmittee on CONCRETE AND REINForced concrete. ORGANIZATION. The members of the special committees on concrete and reinforced concrete of the American Society of Civil Engineers, the American Society for Testing Materials, the American Railway Engineering and Maintenance of Way Association, and the Association of American Portland Cement Manufacturers met at Atlantic City, N. J., on June 17, 1904. Mr. C. C. Schneider was elected temporary chairman, and Prof. A. N. Talbot was elected temporary secretary. The proposed plan of action of the special committee of the American Society of Civil Engineers was outlined, involving the appointment of subcommittees on plan and scope, on tests, and on ways and means. It was voted that the other committees present should cooperate with the special committee of the American Society of Civil Engineers, and that the work should be carried on under a common organization to be known as the joint committee on concrete and reinforced concrete. Mr. C. C. Schneider and Mr. J. W. Schaub, as chairman and secretary, respectively, of the committee of the American Society of Civil Engineers, were made chairman and secretary of the joint committee. Mr. Emil Swensson was elected vice chairman, and upon the resignation of Mr. Schaub Mr. Richard L. Humphrey was elected secretary. PERSONNEL. The present members of the joint committee and of the various subcommittees are as follows: OFFICERS. Chairman: C. C. Schneider. Vice chairman: Emil Swensson. Secretary: Richard L. Humphrey. MEMBERS. American Society of Civil Engineers (special committee en concrete and reinforced concrete): Greiner, J. E., assistant chief engineer, Baltimore and Ohio Railroad, Baltimore, Md. Hatt, W. K., professor of civil engineering, Purdue University, Lafayette, Ind. Hoff, Olaf, vice president Butler Brothers, Hoff & Co., New York, N. Y. Humphrey, Richard L., consulting engineer, Philadelphia, Pa. Lesley, R. W., president American Cement Company, Philadelphia, Pa. Schaub, J. W., consulting engineer, Chicago, Ill. Schneider, C. C., consulting engineer, Philadelphia, Pa. Swensson, Emil, consulting engineer, Pittsburg, Pa. Talbot, A. N., professor of sanitary engineering. University of Illinois, Urbana, Ill. Worcester, J. R., consulting engineer, Boston, Mass. American Society for Testing Materials (committee on reinforced concrete): Johnson, Albert L., consulting engineer, St. Louis, Mo. Lanza, Gaetano, professor of theoretical and applied mechanics, Massachusetts Institute of Technology, Boston, Mass. Lesley, R. W., president American Cement Company, Philadelphia, Pa. Marburg, Edgar, professor of civil engineering, University of Pennsylvania, Philadelphia, Pa. Mills, Chas. M., principal assistant engineer Philadelphia Rapid Transit Company, Philadelphia, Pa. Moisseiff, Leon S., assistant engineer department of bridges, New York, N. Y. Quimby, Henry H., assistant engineer of bridges, bureau of surveys, Philadelphia, Pa. Taylor, W. P., engineer in charge of testing laboratory, Philadelphia, Pa. Turneaure, F. E., dean of College of Mechanics and Engineering, University of Wagner, Samuel Tobias, assistant engineer Philadelphia and Reading Railroad, Philadelphia, Pa. Webster, George S., chief engineer bureau of surveys, Philadelphia, Pa. American Railway Engineering and Maintenance of Way Association (subcommittee on reinforced concrete): Boynton, C. W., chief inspector Universal Portland Cement Company, Chicago, Ill. Swain, George F., professor of civil engineering, Massachusetts Institute of Technology, Boston, Mass. Association of American Portland Cement Manufacturers (committee on concrete and steel concrete): Fraser, Norman D., president Chicago Portland Cement Company, Chicago, Ill. Griffiths, R. E., vice president American Cement Company, Philadelphia, Pa. Hagar, Edward M., president Universal Portland Cement Company, Chicago, Ill. Newberry, Spencer B., manager Sandusky Portland Cement Company, Sandusky, Ohio. To collate existing literature and results of previous investigations. J. R. Worcester, chairman. R. W. Lesley. F. E. Turneaure. George F. Swain. R. E. Griffiths. The national advisory board at its first meeting discussed and revised the tentative programme adopted for the continuation of the work begun during the exposition. In addition to the study of the properties of concrete and reinforced concrete, this programme provided for an examination of the constituent materials of concrete, including the collection of representative samples of crushed stone, gravel, sand, slag, cinders, etc., from all parts of the country, and the testing of these samples to determine their relative value for mortar and concrete. In view of the similarity of the investigations outlined by the joint committee, and those about to be started by the Geological Survey, there was discussed at a meeting of the joint committee in Cleveland, Ohio, June, 1905, the advisability of joint cooperation. At a meeting a few days later in Atlantic City, N. J., Mr. Joseph A. Holmes, representing the Director of the Geological Survey, submitted a basis of cooperation providing for the execution of this work by the Geological Survey, either in its laboratories at St. Louis or in other laboratories which possess the requisite facilities, under the general direction of the joint committee. This plan of cooperation was mutually agreed to and the subcommittee on tests was instructed to cooperate with the Geological Survey in accordance with this understanding. On December 14, 1905, the subcommittee on tests submitted a revised programme of tests, which was amended and adopted by the joint committee. This programme was approved by the national advisory board March 31, 1906, and now constitutes the working outline for these investigations. FUNDS. The first appropriation by Congress for the investigation of structural materials amounted to $12,500, of which $5,000 was available until June 30, 1905, and $7,500 until June 30, 1906. Some months before the close of the fiscal year ending June 30, 1906, this small appropriation of $12,500 for the work at the structural-materials testing laboratories became exhausted, and the work was nearly at a standstill until a new appropriation of $100,000 became available July 1, 1906. With this increased appropriation the work was greatly extended, new equipment purchased, and two large buildings, used during the exposition by the department of mines and metallurgy, were occupied for testing purposes. Another appropriation of $100,000 for the fiscal year July 1, 1907, to June 30, 1908, insures the continuance of the work which is now being conducted as described in the following pages. STRUCTURAL-MATERIALS DIVISION. ORGANIZATION. The investigation of structural materials assigned to a division of the technologic branch of the United States Geological Survey is under the general supervision of Mr. Joseph A. Holmes, expert in charge, with Mr. Herbert M. Wilson as chief engineer, and is under the direct supervision of Mr. Richard L. Humphrey, engineer in charge. |