UNLV Special Collections provides copies of materials to facilitate private study, scholarship, or research. Material not in the public domain may be used according to fair use of copyrighted materials as defined by copyright law. Please cite us.
Please note that UNLV may not own the copyright to these materials and cannot provide permission to publish or distribute materials when UNLV is not the copyright holder. The user is solely responsible for determining the copyright status of materials and obtaining permission to use material from the copyright holder and for determining whether any permissions relating to any other rights are necessary for the intended use, and for obtaining all required permissions beyond that allowed by fair use.
This material is made available to facilitate private study, scholarship, or research. It may be protected by copyright, trademark, privacy, publicity rights, or other interests not owned by UNLV. Users are responsible for determining whether permissions are necessary from rights owners for any intended use and for obtaining all required permissions. Acknowledgement of the UNLV University Libraries is requested. For more information, please see the UNLV Special Collections policies on reproduction and use (https://www.library.unlv.edu/speccol/research_and_services/reproductions) or contact us at special.collections@unlv.edu.
Digital Provenance
Digitized materials: physical originals can be viewed in Special Collections and Archives reading room
Publisher
University of Nevada, Las Vegas. Libraries
Transcription
O f f i c e o f C h i e f E n g i n e e r DEPARTMENT OF PUBLIC SERVICE 7 a OF THE CITY OF LOS ANGELES B U R E A U O F W A T E R W O R K S A N D S U P P L Y , 1 COo m I 1AJUN 14 a F. G. HENDERSON, President A. N. DAVIDSON S. C. GRAHAM R. F. DEL VALLE CHAS. WELLBORN 636 South hill street TELEPHONES: MAIN 275; HOME 10275 C O M M IS S IO N E R S WM. MULHOLLAND, Chief Engineer JAS. P. VROMAN, Secretary L. M. ANDERSON, Auditor LOS ANGELES, CAL., June l1*,1912. Me EC.hGi.e f TEinltgoinn,eer, S.P,L.A.& S.L./RR CLos Angeles, California. o Dear Sir: • With regard to the Las Yegas 18* reinforced concrete pipe with drop of 2 7 . 5 feet/in a distance of 9 , 2 1 0 feet, I do not believe that the Welocity of discharge will ever be greater than four feet ber second. A velocity head of 0 , 2 5 feet and entry head4>f 0 . 1 3 feet would be required for such velocity, thus maMng O. 3 9 feet as the theoretical minimum distance that the pipe should be placed below the surface of the water of the reservoir. For practical reasons, however, it would probably be better to commence the pipe at not less than six or eight inches below the water surface. Yours very truly, Assistant Engineer.
