Development of a sanitary sewer system for North Redondo Beach, California

152 Pages·07.773 MB·English

by  Parker, Burns V

DEVELOPMENT OP A SANITARY SEWER SYSTEM
FOR NORTH REDONDO BEACH, CALIFORNIA
A Thesis
Presented to
the Faculty of the School of Engineering
University of Southern California
In Partial Fulfillment
of the Requirements for the Degree
Master of Science in Civil Engineering
by
Burns V * Parker
June 1950
UMI Number: EP41893
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This thesis, written by
BURNS V. PARKER
under the guidance of his.... Faculty Committee,
and approved by all its members, has been
presented to and accepted by the Council on
Graduate Study and Research in partial fulfill­
ment of the requirements for the degree of
MASTER OF SCIENCE IN CIVIL ENGINEERING
Date J .im .1950
Faculty Committee
TABLE OP CONTENTS
CHAPTER
SYNOPSIS. .
, INTRODUCTION.
Historical notes. •
Three basic requirements necessary to the
development of a sewer system . • . . *
Need for the sewer system •
Readiness of the property owners for the
sewer system. •
Method of financing the sewer system. •
II. PLANNING............
Survey of sanitary conditions by the
Los Angeles County Health Department.
City or Federal aid in financing the
preparation of plans. . . . . ........
Financing plan preparation by the Bureau
of Community Facilities of the Federal
Works Administration. • .
Proposed construction program of the
Los Angeles County Sanitation District.
Special Assessment Investigation, Limita­
tion and Majority Protest Act of 1931 .
iii
CHAPTER PACE
Waiver of the provisions of the Special
Assessment Investigation, Limitation
and Majority Protest Act of 1931 * . - . 2 5
Agency responsible for design - City
Engineering Department or private
engineering firms. , 28
III. DESIGN . . 30
Establishment of sewage flow coefficients. . 31
Limiting Velocities and Grades • • • • • • • 35
Design of Trunk Sewers............. - 36
Design of Street Sewers and House
Connections. ..........- 44
Trench loads and pipe bedding. • • 53
Design of pumping stations . . . 61
Establishment of rate of flow. • . 61
Determination of size of wet well and dry
well • . • 65
Choosing pumping station location. • 66
Determination of size of Force Main. . . . . 67
Determination of total dynamic head. . . . . 68
Required rating of pumps and motors. • • • • 71
Total available storage. .................. 73
Condition of sewage. 75
Pump operation and control • 77
iv
CHAPTER PAGE
Structural calculations. * 81
Pinal cost estimates . • , 86
Analysis of* cost estimates • 86
IV. LEGAL ASPECTS.......... 90
Summary of the provisions of the Improve­
ment Act of 1911,M Division 7 of the
Streets and Highways Code of California. • 93
Preliminary requirements ............ 93
Ordinance of Intention . . . - 93
Notice of Improvement. . - 95
Post card notice . . . 96
Protest and hearing. . 96
Ordinance ordering the work. . 97
Notice Inviting Sealed Proposals, and
Receiving Bids . . . 97
Resolution of Award, and Notice of Award
of Contract. • • • • 98
The Contract and its Contents. . . . . . . 99
Resolution approving Assessment Diagram. . • 100
The Assessment • • ........ . . . . . . 100
Notice of Assessment Hearing and Resolution
Confirming Assessment. • • • • r , 100
Warrant and Contractor^ Return. • 101
V
CHAPTER PACE
1911 Act Bonds. • - . 102
Affidavits. . . • 102
r. AWARDING THE CONTRACT FOR PHASE I . 105
Notice inviting bids. , - 103
Bond Quotation. . . • . «. • 104
Receiving bids and award of contract. • . 116
Signing the contract. . - . 117
VI. CONSTRUCTION OF PHASE I . * 121
Labor and materials • • .121
Supervision and Inspection. . . . • . . . 121
Completion and final cost of the project. • • 122
Assessment Engineering. • 125
Payment. . . . . 125
Collection by Contractor. . . . . . • 125
Collection of unpaid assessments. . • 127
VII. CONCLUSIONS........... - , 129
General . . . . 129
California Street Improvement Acts. • • • • • 130
Bond Discount • '.... - - . 133
Plan Preparation. . . 134
BIBLIOGRAPHY. . - , 135
APPENDIX. . - . 138
LIST OP TABLES
TABLE PAGE
I. Preliminary Cost Estimate for Phase I • . 13
II. Preliminary Cost Estimate for Phase II. • 13
III. Preliminary Cost Estimate for Phase III • 13
IV. Minimum Allowable Grades for Sewers to
Give a Minimum Velocity of 2 feet per
second. • • 38
7. Data for Plow in the South Hawthorne War-
field Avenue Extension Trunk and Tribu­
tary Trunk Sewers before the Lomita
Extension Trunk is Built............. 41
VI. Data for Plow in the South Hawthorne War­
field Avenue Extension Trunk and Tribu­
tary Trunk Sewers after the Lomita
Extension Trunk is Built. • • • « • • 42
VII. Maximum Widths of Trenches. • • • • • • 56
VIII. Vitrified Clay Pipe Crushing Strength
Requirements in Pounds per Linear Foot. • 56
IX. Values of C for Use in Formula W « CwB^ . * 58
X. Sewage Pumping Station Data ............. 80
XI. Pinal Cost Estimates for Phases I, II & III . 87
XII. Cost Summary for Phases I, II & III . - - 88
XIII. Summary of Bids............... 118
LIST OF FIGURES
FIGURE PAGE
1. Boundary and Topographic Map of North
Redondo Beach, California. • • • • . • •
.
2 Map of the Northerly Portion of the City
of Redondo Beach, California showing
"boundaries of areas to "be sewered in Phases
I, II and III, and proposed and existing
Trunk Sewers...........................
3. Index and Key Map of North Redondo Sewer
System Phase I showing flow pattern of
sewers • • • • • • • • • . 15
4. Index and Key Map of North Redondo Sewer
System Phase II showing Flow pattern of
sewers . . . . . . . . . 16
5. Index and Key Map of North Redondo Sewer
System Phase III showing flow pattern of
sewers • • • • . . . • • • • • 17
6. Zoning Map of North Redondo Beach, California
and Boundaries of Pumping Station Tributary
Areas. . . . . . . . . . . . 33
Map of the Northerly Portion of the City of
Redondo Beach, California showing gravity
flow and pumping flow areas tributary to
Lomita Extension Trunk . - 4-5
viii
FIGURE PAGE
8* Sheet 45 of North Redondo Sewer System
Phase I. . . . . ..................... . . 52
9. Map of Assessment District No. F.W.A. 663. • 91
A. Flow Diagram for the Design of Circular Sani­
tary Sewers. ................. 37
B. Standard Details for Sanitary Sewers • • • • 48
G. A.S.T.M. Specification (C-13-35) Methods for
Determining Crushing Strength of Pipe and
Approved Methods of Laying Pipe.........- 55
D. Improper Methods of Laying Pipe.......... .. = 60
E. Grant Pumping Station Details. • • • • • • • ' 62
F. Wiring Diagram and Bending Details for Re­
inforcing Bars for Grant Pumping Station • 63
G. Coefficients of Resistance of Rectangular
Beams............ 64
H. Resistance of Valves and Fittings to Flow
of Fluids. .............................. 70
I. Characteristic Curves for 4tt Vertical Wet
Pit Screenless Ejector................... 72
A-A. Economical Pipe Sizes for Pressure Mains • • . 139