WSP03255

• File Number: 8220.200.05.A
• Description: Hoover Dam/Lake Mead/Boulder Canyon Project
• Basin: Colorado Mainstem
• Date: 1/1/1933
• Author: USDOI
• Title: The Construction of Hoover Dam: Preliminary Investigations Design of Dam and Progress of Construction
• Water Supply Pro - Doc Type: Report/Study

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CONTENTS

PART! : ENGINEERING INVESTIGATIONS

Sea.rch for the most suitable site for a reservoir to regulate the flow of the Colora.do~_____._n_____n_
Geology of dam and reservoir Bites. __ _ _._. ____ _ ___ _____ _ ____ _ _ ______ _______ ____________________
Technical design studies. _ _ _ _ _ _ _ _ _ ____ ___ _ ____ ___ _ _ _ .____ __ __ __________ _ __ ___________ _________
Hydraulic research:
Spillways_________________________________________________._____________.________________
Erosion of tunnellining____ __ _ ___ _ ___ _ ___ ____ _____ _ __._ ______ _________ ____________________
Outlet works. _ _ _ __ _ ___ _ __ _ _ _ _ _ __ _ ____ _ __.____ __ _______. __ ___________________ ____________
Outlet pipes and penstocks__ _ __ __ _ _____ ___ __ _______________ ____ ____ ________________u_____
ConcreteinvestigatioDs_______________________________________________________________________
Tenttl.tive cement specifications_ _ __ ___ ________ __ __ _ _____ _____ _____ _____________ __ _____ _________

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PART II: PRELIMINARY OPERATIONS

lJnion Pacific Itailroad________________________________________________________________________ 23
lJnited States Construction Railroad____ __ _ __ _________~_________________ _______________________ 23
Boulder City-Hoover Dam Highway ____ _________ _ _ __________ _ _____ ____ ____________ ___________ 24
Construction power _ _ _ -_ _ __ _____ ______ __________ ________ _____________________________________24
Boulder City, Nev _ _ _ __ _ - ___ _ ___ _______ ____ ___ ______ __ ___ __________________ _____ _____________ 26
Boulder City w.ler supply _____________________________h_____________________________________ '28
Boulder City sewage disposalaystem___________________________________________________________ 31
Suryoying in Black Canyon__ __ __ _________________________________________________________a___ 33

PART III : PROJECT FEATURES-DETAILS OF DESIGN

Report of consulting board_________ ___ _______________ _________________________________________ 38
lJ8Ill_______________________________________________________________________________________ 38
Contraction and radial joints___ ______ __________ _______________________________________________ 38
Grout and drainage system__ __________________________________________________________________ 39
Concrete cooling system_ ___ __ ___ ____ __ _ ___________ ___________________________________________ 39
Divermonworks____________________________________________________________________________~ 40
Outletworke________________________________________________________________________________ 40
Spillways___________________________________________________________________________________ 41
Power plant____ __ ____ __ __ __ _ _____ _ _ __ ____________ ______________ _____________________________ 42
Pennanentcableway________~________________________________________________________________ 43
Report of Colorado River Board_______________________________________________________________ 44

PART IV: PROGRESS OF CONSTRUCTION
Contract with Six Companies (Inc.)____________________________________________________________ 49
Award of contract_____________ ___ ___________________________ _____________________________ 49
Excavation of diversion tunne1sn ___ ____ ____ ____________u_ __ ___ _____________ ______________ 49
COncreteaggregates_______________________________________~______________________________ 51
Concrete mixing_ _ ____ _ _ __ _______ _ __ _ _____ ___________ ____________________________________ 54
Concrete.lining_ Diversion tunnels_ _ _ _ _ _ _ _ _ _ _ _ _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___ _ _ _ __ _ _ _ _ _ _ __ __ __ __ _ 07
Steel gates for diversion tunnels____________________________________________________________ 61
Co Construction of cofl'erdams__ _________ __________ _______ ___ __ _____________________ __________ 65
L' otract with Babcock & Wilcox Co. for penstock pipes__________________________________________ 67
ist of prinCipal contracts________ _ __ _ ___ _ ___ _____ ____ _____ _ _ _______ ________ _ _____..:._________ ___ 68

PART V: ALL-AMERICAN CANAL
Summa')' of Gault reporth_ ----------____________n___________________"______________________ 69

APPENDIX
Standard Government form of contract (in full text)__________________________,_________________,_ 1Q

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