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FLOOD-CONTROL CHANNELS RESEARCH PROGRAM MISCELLANEOUS PAPER HL-90-1 0 FLOOD-CONTROL CHANNEL NATIONAL INVENTORY by Robert W. Mccarley, John J. Ingram, Bobby J. Brown Hydraulics Laboratory DEPARTMENT OF THE ARMY Waterways Experiment Station, Corps of Engineers 3909 Halls Ferry Road, Vicksburg, Mississippi 39180-6199 and Andrew J. Reese MCI Consulting Engineers, Inc. 3325 Perimeter Hill Drive Nashville, Tennessee 3721 1 October 1990 Final Report Approved For Public Release; Distribution Unlimited Prepared for DEPARTMENT OF THE ARMY US Army Corps of Engineers Washington, DC 20314-1000 Under Work Unit No. 32549 Destroy this report when no longer needed. Do not return it to the originator. The findinge in this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. ) Unclassified SC:CURITY CLASSI FICATION OF THIS PAGE Form Approved REPORT DOCUMENTATION PAGE I 0MB No. 0704-0188 la. REPORT SECU RITY CLASSIFICATION 1 b. RESTRICTIVE MARKINGS Tt"".-.1 ~c- c-; -F"1 o.4 2a. SECURIT Y CLASSIFICATION AUTHORITY 3 . OISTRIBUTION / AVAILABILITY OF REPORT Approved for public release; 2b. DECLASSIFICATION/ OOWNGRAOING SCHEDULE distribution unlimited. 4. PERFORMING ORGANIZATION REPORT NUMBER(S} 5. MONITORING ORGAN IZATION REPORT NUMBER(S) Mis cellaneous Paoer HL- 90 -10 6a. NAME OF PERFORMING ORGANIZATION 6b. OFFICE SYMBOL 7a . NAME OF MONITORING ORGANIZATION (If applicable) See reverse. 6c. ADO RESS (City, State, and ZIP Code) 7b. ADDRESS (City, State, and ZI P Code) See reverse. 8a. NAME OF FUNOING / SPONSORING 8b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFI CATION NUMBER ORGANIZATION (If applicable) US Armv Corn" of "'--•- ~-,rs Sc. AOORE SS (City, State, and ZIP Code} 10. SOURCE OF FUNDI

TECHNICAL REPORT NO. 1-801 DEVELOPMENT OF ON-STRUCTURE STRESS GAGES by R. W. Faust J. K. Ingram November 1967 Sponsored by Defense Atomic Support Agency NWET Subtask 11x13x03 Conducted by U. S. Army Engineer Waterways Experiment Station CORPS OF ENGINEERS Vicksburg, Mississippi ARMY-MRC VICKSBURG, MISS. THIS DOCUMENT HAS BEEN APPROVED FOR PUBLIC RELEASE AND SALE; ITS DISTRIBUTION IS UNLIMITED Tf]E CONTENTS OF THIS REPORT ARE NOT TO BE USED FOR ADVERTISING, PUBLICATION, OR PROMOTIONAL PURPOSES, CITATION OF TRADE NAMES DOES NOT CONSTITUTE AN OFFICIAL ENDORSEMENT OR APPROVAL OF THE USE OF SUCH COMMERCIAL PRODUCTS* ABSTRACT This report describes the development of three types of onstructure stress (OSS) gages (the IF and FS soil-pressure gages and the M-l airblast gage) based upon the load column principle. The OSS gage design is based upon the assumption (backed by theory and experiment) that if the gage is made much stiffer than the soil, the overregistration of the gage approaches a constant value. A brief discussion of some of the unique problems of measurement of soil pressures is presented. Six OSS gages (four IF, one FS, and one M-l) were statically tested and evaluated with respect to linearity, hysteresis, resolution, thermal sensitivity, and strain sensitivity. Dynamic tests were performed in a laboratory shock tube and blast load simulator facilities. The OSS gages are concluded to be adequate for soil-pressure measurements on certain types of rigid structures and for airblast measurements, even in explosive atmospheres. They successfully measured dynamic gas pressures up to 5,000 psi in the firing tubes of the laboratory blast simulator device. Additional research is recommended to evaluate the gage performance more completely in static and dynamic soil tests. A range of soil types from coarse dry sand to moist fat clays should be investigated. Future research on gages for measuring soil pressures on structures should be concentrated on development of small