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<br />~ <br /> <br />~ <br />L.~ <br />N <br /> <br />c <br /> <br />CONTENTS <br /> <br />&~~ p~ <br />Introductory statement................................................ . facing UI <br />EngineeringocganizadoD during model studies...........". ...... .... ... .... VI <br />Foreword... ........,......'. ....... ..... ..'.......... ...... '.. ..,........ VII <br />Contents.. . .. . . .......................................................... IX <br />Ust of.6gures... ...". .-.. ....... ... ....... ,... ...... ...." ......... ....... mI <br /> <br />CHAPTER I-INTRODUCTION <br /> <br />1. General.. . ... ...."".. ......"... ....... .... ...... ... ,.... ............ 1 <br />2. Scope of bulletin. . . . ........,.............................................. 5 <br />3. Summary of results. .... ..... ",. ...... .... ..,..... .......... ..... ...... .... 6 <br />4. Verification of results of investigations....................................... 6 <br />5. Similitude. . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7 <br />6. The hydraulic laboratories.....................................,............ 7 <br />7. Personnel... -.............................................................. 7 <br />8. Bibliography. . . ... ....................................,................... 8 <br /> <br />CHAPTER n-SPILLWAY STUDIES <br />INTRODUCTION <br />9. The prototype. ............ ......... ......... ..... .............. ........... 11 <br />10. Purpose of the spi1Jway model t,ests........... ..... ...... .,. ... .............. 11 <br /> <br />INITJA1. STILLlNG,POOL.1ESTS <br /> <br />11. Model of the preliminary design. .......... ....... ......... .................. 13 <br />12. Spillway 1,072 fIXt long, pool floor at elevation 152.0.......................... 15 <br />13. Spillway 1,300 feet long, pool floor at elevation 152.0.......................... 15 <br />14. Spillway 1,732 feet long, pool floor at elevation 152.0. .... _.................... 18 <br />15. SpiJIway 1,300 fcct long, pool tIoor at elevation 150.0. ...................... 20 <br /> <br />FINAL STILLING,POOL TESTS <br /> <br />16. Effect ohive! bed on stiUing pool. . . .. .. .................,.................. 22 <br />17. Spillway 1,335 fcct long, pool .Boor at elevation 150.0.......................... 23 <br />18. Pinal design of stilling pool. . . . . . . . .. . . . . . .. .. . .. . . .. . . . . . . .. . . . . . . . . . .. .. .. 23 <br /> <br />MODIFICATIONS IN FINAL SPILLWAY DESIGN AS RESULT OF <br />STILLING-POOL TESTS <br /> <br />19. Final modifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 24 <br />20. Thoroughness afsrilling-pool te.sts......... ........ ........... ... ... ........ 26 <br /> <br />TESTS OF PRESSURES ON FACE OF SPILLWAY <br /> <br />21. Original design. ........... ... ." ...... .......... ...,...... ...... .......... 26 <br />22. Effect of depth of approaCh.................................................... 26 <br />23. Effect of negative pressures........... ....................................... 26 <br />'" <br />