WASTEWATER Database and DATA Dictionary...WASTEWATER DATABASE AND DATA DICTIONARY - 1 - CHAPTER 2 INTRODUCTION 1.1 Purpose and Scope This purpose of this document is to present an

WASTEWATER DATABASE AND DATA DICTIONARY

WASTEWATER Database and

DATA Dictionary

Draft

Wastewater Edit Group


TABLE OF CONTENTS

CHAPTER 1 : INTRODUCTION ........................................................................................... 1

1.1 Purpose and Scope ........................................................................................................... 1

1.2 Wastewater Edit Group .................................................................................................... 1

1.3 Brief History of Sewer Database ..................................................................................... 2

1.4 Wye Map Conversion Process ......................................................................................... 3

1.5 Data Reconciliation and Synchronization ........................................................................ 3

CHAPTER 2 : WASTEWATER COLLECTION AND TREATMENT……………….….5

2.1 The City of Los Angeles Sewer Network ....................................................................... 5

2.2 Laterals............................................................................................................................. 5

2.3 Major / Interceptor Sewers .............................................................................................. 8

2.4 Pump Plants ..................................................................................................................... 9

2.5 Sewer Map Grid ............................................................................................................. 11

CHAPTER 3 : THE PLANNING PROCESS………………………………………………14

3.1 Bureau of Engineering Plan Process ............................................................................. 14

3.2 Phases of Engineering Construction Project ................................................................. 14

3.3 Electronic Plan Processing System (EPPS) ................................................................... 16

CHAPTER 4 : WASTEWATER DATABASE AND DATA DICTIONARY ...................... 17

4.1 Introduction .................................................................................................................... 17

4.2 Wastewater Feature Dataset ........................................................................................... 17

4.3 Associated Feature Class information ........................................................................... 18

4.4 Feature Dataset and Field name: Cleanout .................................................................... 20

4.5 Feature Dataset and Field name: Connectivity Node …………………………………21

4.6 Feature Dataset and Field name: Connector Wye ......................................................... 22

4.7 Feature Dataset and Field name: Laterals ...................................................................... 23


4.8 Feature Dataset and Field name: Non-Structure ............................................................ 24

4.9 Feature Dataset and Field name: Physical Structure ..................................................... 25

4.10 Maintenance Hole - Description .................................................................................. 26

4.11 Code Description ......................................................................................................... 26

4.12 Table Indexing and Stationing ..................................................................................... 27

4.13 Mainline Sewer ............................................................................................................ 28

4.14 Feature Dataset and Field name: Physical Structure Abandoned ................................ 29

4.15 Feature Dataset and Field name: Pipe.......................................................................... 30

4.16 Pipe - Subtypes ............................................................................................................ 31

4.17 Pipe - Status ................................................................................................................. 31

4.18 Pipe - Shape ................................................................................................................. 31

4.19 Pipe - Materials and Abreviations ............................................................................... 32

4.20 Pipe - Liners and General Description ......................................................................... 32

4.21 Gravity Force Main ...................................................................................................... 33

4.22 Major Sewers / Outfall Systems .................................................................................. 34

4.23 Pipe Ownership and General Information ................................................................... 34

4.24 Feature Dataset and Field name: Pipe Abandoned…...………………………………36

4.25 Feature Dataset and Field name: Plant……………………………………………..…37

4.26 Feature Dataset and Field name: Pseudo-Point………………………………………38

4.27 Feature Dataset and Field name: Pump Station………………………………………38

4.28 Feature Dataset and Field name: Wye………………………………………………..39

4.29 Feature Dataset and Field name: Wye Address...…………………………………….40

4.30 Wye Field Names…………………..…………………………………………………41

4.31 Wye - Description: Types of Sewer Connections……………………………………41

4.32 Wye Map Abbreviations……………………………………………………...………42

4.33 Connectivity of the Wastewater Network.………………………………...………….44


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CHAPTER 2

INTRODUCTION

1.1 Purpose and Scope

This purpose of this document is to present an outline the City of Los Angeles’s sanitary

sewer system as well as to provide a basic structure and organization of its wastewater

network. The document contains data schemas, code descriptions, tables, and attributes

descriptions for many of the feature dataset and field names. Among the items of

information is a data dictionary which records what data is stored; the name, description,

and characteristics of each data element; the types of relationships between the data

elements; and the access rights and frequency of access. The data dictionary is for the

benefit of the wastewater edit staff, programmers, and those who need to refer to it

1.2 Wastewater Edit Group

The Wastewater Edit Group is the folks on the wastewater frontline in the Mapping and

Land Records Division of the Bureau of Engineering. The Group comprises of a

knowledgeable staff with expertise in spatial analysis, geographic information systems

(GIS), property ownership, house connection permits, and legal documents. The Group

uses an ArcGIS Desktop application to help manage the City’s complex sewer network.

Its core responsibilities are creating and maintaining complete and accurate wastewater

data by performing routine sewer edits; major operational and corrective maintenance

activities on sewer pipes, wyes, laterals, special structures, and annotations; NavigateLA

corrections; and inputs and updates of sewer permits, B-plans, D-plans, and E-plans. In

addition, the Group offers department support with map products, solutions, and data to a

number of GIS-based sewer programs, namely WCED’s SMART (Sewer Management

Automated Renewal Tracking System); ESRP (Emergency Sewer Repair Program); and


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the Bureau of Sanitation’s EMPAC, a combined initiative which focuses on BOS and

BOE data synchronization.

An efficient approach to wastewater produces positive outcomes. Major benefits include

improve sewer data quality and distribution; improve services for cost-saving private

development programs, customers, and citizens. As increasing number of the City’s

clients are turning to NavigateLA as one of their resources for their planning and design

solutions, the Wastewater Edit Group has a tremendous responsibility to insure that the

City’s sewer network maintains its finest measurable detail and integrity.

1.3 Brief History of Sewer Database

Whether one is engaged in wastewater editing, or planning to, it is important that he or

she has some knowledge of the basic structure of the City’s sewer system and its

database. The documentation introduces various components and features of the sewer

network, namely sewer pipes, sewer outfalls, maintenance holes, pump plants, treatment

plants, chimneys, sewer wyes, and other structures. These elements and their appurtenant

facilities constitute the sewer system which collects and conveys wastewater flows

generated by residences and businesses.

Around 1985, the City’s Wastewater Program created the first database of the City’s

sewer system. The database was officially known as the “Sewer Inventory and

Maintenance Management System or “SIMMS” for short. SIMMS was based on the

Bureau of Engineering’s 400 scale hand-drawn sewer maps, sewer wye maps, and

constructions plans. The database contained an inventory of the physical properties of the

City’s sewer pipes and maintenance structures, as well as the maintenance reports and

schedules that were used by the Bureau of Sanitation to track important maintenance

operations and archive maintenance records. Records were stored in a tabular form on the

City’s mainframe computer.


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1.4 Wye Map Conversion Project

In 1989, the Wastewater Program launched the Wye map conversion project to convert

hand-drawn wye maps into a GIS format. Wye maps were digitized and the graphics

were linked to the existing SIMMS database. Sewer connections and permit information

were stored in the database. Maintenance structures were digitized against the City’s

existing landbase layer. The graphics were linked to the SIMMS database by assigning

each maintenance structure with the number that corresponded to its location on the

sewer maps. The identifier of each pipe was created by combining the structure

identifiers in the sequence of upstream and downstream structures. The identifier of each

pipe allowed access to the SIMMS database as well as the pipe or maintenance hole table.

Wye and Permit tables were created and updated periodically to reflect the City’s sewer

system and to show those permitted properties which were connected to the sewer

system.

1.5 Data Reconciliation and Synchronization

The Bureau of Engineering (BOE) Mapping and Land Records Division maintains the

sewer pipe attribute data using a customized Wastewater Application. Some of the

attributes are generated automatically during background processes by utilizing the

identity process with the overlaying layers. Today, many City engineers and sewer design

personnel refer to the maintenance record that is maintained by the Bureau of Sanitation

(BOS) as SIMMS. At the same time, they refer to the tables in the Sewer Wye database

linked to GIS and maintained by the Bureau of Engineering also as SIMMS. With the

converted wye maps and the ability to maintain and modify the data, both SIMMS have

expanded simultaneously over time into two sewer databases, often times conflicting with

each other. Most recently, in an attempt to resolve discrepancies between the two

databases, BOE and BOS have combined their efforts to synchronize or align BOE GIS

data with BOS Enterprise Maintenance Planning and Control (EMPAC) data. The

challenge is to resolve the discrepancies between the two departments’ databases and


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ultimately have BOE sewer database as the accepted and authoritative sewer network,

essential to the planning, design, and maintenance functions of the City’s wastewater

facilities.


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CHAPTER 2

WASTEWATER COLLECTION AND TREATMENT

2.1 The City’s Sewer Network

The City of Los Angeles has one of the world’s largest wastewater collection and

treatment systems. The system consists of 6,700 miles of sewers, 46 pumping plants

(2010), three water reclamation plants, and one secondary wastewater treatment plant.

This vast network of pipes, ranging from 6-inch to 14-feet diameter, collects and

transports wastewater generated by residential, commercial, and industrial users in the

City as well as from certain surrounding communities.

2.2 Laterals

Like small branches of a tree that lead to large branches, which in turn connect to the tree

trunk, sewers become increasingly larger and larger as the wastewater flows further and

further downstream. It starts with small diameter pipes, called lateral pipelines or

secondary sewers. These small diameter pipes, typically 8 inches, transport the

wastewater away from a home or business and into sewer mains that run under streets,

alleys, or other rights-of-way. Figure 2.1 depicts sewer flow in a sanitary sewer lateral

from a residence to the sewer main.


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Figure 2.1. Sewer Flow from Residential to Sewer Main (black arrow).


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Figure 2.2 shows the City’s sewer network of secondary, interceptor, relief, outfall and

trunk sewers that convey flows from residential, business and commercial sources to

various sewage treatment plants serving the City.

Figure 2.2. Los Angeles Sewer System with Neighborhood Service Areas (NSA).

Data obtained from the Bureau of Engineering, Wastewater Edit Group, 2010.


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2.3 Major/Interceptor Sewers

Sewer mains connect to collectors and trunk lines, which are large diameter pipes,

referred to as interceptor sewers, such as EVIS, NOS, and ECIS. These huge pipes

convey flows to the City’s treatment and water reclamation plants (see Figure 2.3).

Figure 2.3. Major Outfall or Interceptor Sewers and Treatment Plants in the City of Los

Angeles. Data obtained from the Bureau of Engineering, Wastewater Edit Group, 2010.


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2.4 Pump Plants

Generally, sewer routes follow slopes of natural topography for gravity sewers. The

City’s sewer network is a gravity flow system, meaning it uses its own built-up pressure

to allow sewage to flow naturally over terrain with vertical differences for long runs.

However, there are regions of the City, for example, in the Harbor and coastal Pacific

Coast Highway (PCH) where the topography is not well-suited for a gravity flow system.

Unfavorable terrain and/or subsurface conditions inhibit the flow, causing hydraulic

inefficiencies, flooding, and a host of other problems. An alternative is to use wastewater

pumping structures or pump plants. The City has a number of pump plants, complete with

appurtenant facilities, to collect and convey wastewater flows in unfavorable terrain to an

acceptable point of discharge (see Figure 2.4).


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Figure 2.4. Location of Pump Plants in the City of Los Angeles. Data obtained from the

Bureau of Sanitation, 2010.


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2.5 Sewer Map Grid

In the past, the numbering of Maintenance Hole (MH) corresponded to the location of

each structure on the sewer map grid. It was based on the S-map Quadrant numbering

system, commencing at grid number 1 (yellow) and looping across in a “S-like”

formation until it reaches grid number 16 (see Figure 2.5).

S-Map Quadrant number

16 13 14 15 16 13

4 1 2 3 4 1

8 5 6 7 8 5

12 9 10 11 12 9

16 13 14 15 16 13

4 1 2 3 4 1

Quadrants in each S-Map

Figure 2.5. City of Los Angeles Sewer Map Quadrant


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The identifier of each pipe was created by combining the structure identifiers in the

sequence of upstream and downstream structure. Figure 2.6 shows the City’s Sewer Map

Grid, laid on top of the four Engineering Districts- Central, Harbor, Valley, and West

Los Angeles.


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Figure 2.6. City of Los Angeles Sewer Map Grid and Engineering Districts.


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CHAPTER 3

PLAN PROCESSING

3.1 Bureau of Engineering Plan Processing

Engineering construction projects contain a set of drawing plans produced from

AutoCAD and Micro Station by BOE’S Drafting Technicians or Engineers and private

contractors. These engineering plans go through a life-cycle of four different stages,

associated with five phases of the Engineering Construction Project.

3.2 Phases of Engineering Construction Project

The following identifies the five phases of construction projects and four types of

engineering plans.

Five Phases of Engineering Construction Project:

1. Pre-Design (Planning)

2. Design

3. Bid and Award

4. Construction

5. Post-Construction


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Four Types of Engineering Plan:

1. AS-BID: Design Phase

The District Engineer signs off on the plans then submits them

for indexing. There are two ways in which these plans are

indexed and uploaded electronically into the Vault Repository

or eVault. The first is to use the plan processing module in

eVault to upload final and pre-final sheets for Record Indexing

to process index numbers. This method is generally done by the

B-Permit District Office. The second method is to send the hard

copies to Record indexing, where the plans are scanned and

processed into the eVault Repository. This is the method of

choice for other offices in BOE. Once indexed, the plan-set

sheets go to Construction Project for drawing distribution.

2. Revised: Bid & Award Phase

In very rare situation, some submitted plan-set sheets for bid

need to be revised during the bid phase. The bid phase occurs

before construction starts. Therefore, by the time a project goes

into construction phase, the construction Engineer can

download all current sheets from the eVault repository.

3. AS-BUILT: Construction Phase

Once construction is completed, the construction Engineer

downloads the sheets from the eVault and then records all

the changes made during the construction phase on the sheets.

These set of plans are known as AS-BUILT.

4. AS-CORRECTED: Post-Construction Phase

Any changes after submitting AS-BUIILT plan sets are


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considered AS-CORRECTED (different version may be

involved).

3.3 Electronic Plan Processing System (EPPS)

The Electronic Plan Processing System (EPPS) Application processes AS-BUILT

plans using the following procedure:

1. Authorized user in the Division/District Office uploads plans.

2. The manager or authorized user in the Division/District Office

verifies that all sheets are valid. They may correct and re-upload

the sheets and/or approve or disapprove the sheets individually.

Once all sheets are approved, the authorized user submits them

to the Vault for approval. He or she submits a digital signature

by entering his/her login password and then clicks on the

“Submit for Vault Approval” button, confirming that the plan

set is ready for Vault approval. After the plan sheets have been

submitted, an email is sent to the Vault approvers informing

them of the need to review the plan.

3. The authorized Vault approver reviews the plan, updates and re-

uploads the sheets and/or approves or disapproves the sheets

individually. After all sheets are approved, the Vault submits the

plan sheets for public viewing.


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CHAPTER 4

DATA DICTIONARY

4.1 Introduction

This chapter describes the basic structure of the wastewater database, including its

associated features, field names, and component variables. It also includes a data

dictionary which describes the basic organization of the wastewater database. The

data dictionary includes the values of each variable and provides helpful

information that can be used for data processing, organization, and analysis.

4.2 Wastewater Feature Dataset

This feature dataset represents current wastewater information within the City of Los

Angeles. The Mapping and Land Records Division of the Bureau of Engineering,

Department of Public Works provides the most current geographic information of the

sanitary sewer system, pump plants, wyes, maintenance holes, and other structures. The

majority of sewers are in good condition, but some are being repaired or replaced. These

include sewers that are very old, seriously deteriorating, or too small for the area they

serve. The City has developed a rigorous GIS wastewater maintenance system to ensure

that its sewers reflect ground conditions. Wye and sewer information are available on

NavigateLA, a website hosted by the Bureau of Engineering, Department of Public

Works.

http://navigatela.lacity.org/navigatela/


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4.3 Associated Feature Class Information

Associated feature class information about the wastewater feature dataset is as follows:

Annotation_casing: annotation feature class containing detailed information about a

particular casing.

Annotation_casing_line: line feature containing detailed information about a particular

casing.

Annotation_pipe: annotation feature for wastewater pipe dataset.

Annotation_pipe_line: line feature containing detailed information about a particular

pipe.

Annotation_sewer_ease: annotation containing description of easement and other source

data.

Annotation_sewer_ease_polys: annotation describing the shape or geometry of

easement.

Annotation_wye: annotation containing description of wye, i.e. stationing, type

Cleanout: a capped pipe which provides access to a sewer for cleanout or to remove

blockages.

Connectivity_node: a point where two sewers connect, having no physical maintenance

hole at point of junction.

Connector_wye: point showing the location of a chimney.

Connector_wye_history: a connector wye which has been removed from the wastewater

system.

Connector_wye_symbol: depicts a chimney box.

Construction_line: temporary line feature class used in the construction of wastewater

dataset.

Lateral: a sewer pipe line or portion thereof which connects a residence or business to

the sewer mainline.

Lateral_history: a lateral which has been removed from the wastewater system.


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Non_structure: a node used to indicate a change in size, alignment or stationing.

Physical_structure: a structure or maintenance hole used to provide access to the sewer

from the surface.

Physical_structure_abandoned: any physical structure (MH) which has been

abandoned.

Pipe: a mainline sewer constructed in a public street, alley, walk or other public place or

in a sewer easement and is used for the conveyance of wastewater.

Pipe_abandoned: a sewer pipe which is no longer in service.

Pipe_history: a sewer pipe which has been deleted from the wastewater system.

Plant: a wastewater treatment or reclamation facility.

Pseudo_point: a point where there is no physical structure; used to show connectivity.

Pump_station: structures and other appurtenances used to transfer wastewater either

because here is insufficient gravity or the common collecting point is lower than the

sewer.

Structure_History: a structure which has been removed from the wastewater system.

WW_Network: wastewater sewer system with all its interconnected components.

WW_Network_Juncture: area indicating a connectivity connector.

Wye: a connection device used to provide sewer service to either side of the street.

Wye_address: street or permitted address served by a wye.


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4.4 Feature Dataset and Field Name: CLEANOUT

1 OBJECTID AutoNumber OBJECTID

2 ENABLED Short Integer Enabled Yes 1 EnabledDomain

3 ASSETID Double ASSETID Yes

4 SERVICEID Text SERVICEID Yes wwDomainService 50

5 BASIN Text BASIN Yes 5

6 OWNER Text OWNER Yes wwDomainOwner 6

7 STATUS Text STATUS Yes wwDomainMH_Status 10 Maintenance Hole Status

8 STRUCTURE_ID Long Integer STRUCTURE_ID No

9 JUNCTION_SUBTYPE Long Integer TYPE Yes 1

10 LID_ELEV Double LID_ELEV Yes wwDomainMH_Elevation Lid Elevation

11 VDATUM Text VDATUM Yes wwDomainDatum 2 Vertical Datum

12 MHMATERIAL Text MHMATERIAL Yes wwDomainMH_Material 5 Maintenance Hole Material

13 YEAR_INST Text YEAR_INST Yes 4

14 MH_TYPE Text MH_TYPE Yes 50 Maintenance Hole Type

15 MH_BASE Text MH_BASE Yes wwDomainMH_Base 1 Maintenance Hole Base

16 MH_DEPTH Text MH_DEPTH Yes 50 Maintenance Hole Depth

17 COVERDIAM Double COVERDIAM Yes

18 BARRELDIAM Double COVERDIAM Yes

19 STREET1 Text STREET1 Yes 30


21 BLKNO Text BLKNO Yes 7

22 COMMENTS Text COMMENTS Yes 100

23 MDIST Text MDIST Yes 5

24 ROUTE Text ROUTE Yes 5

25 SEQ Text SEQ Yes 7

26 ENG_DIST Text ENG_DIST Yes wwDomainDistrict 2 Engineering District

27 CNCL_DIST Short Integer CNCL_DIST Yes wwDomainCnclDist Council District

28 FACILITY_NO Long Integer FACILITY_NO Yes

29 NAME Text NAME Yes 50

30 ADDRESS Text ADDRESS Yes 50

31 CRTN_DT Date CRTN_DT Yes

32 LAST_UPDATE Date LAST_UPDATE Yes

33 USER_ID Text USER_ID Yes

34 LON Double LON Yes Longitude

35 LAT Double LAT Yes Latitude

36 SHAPE Geometry SHAPE Yes Point

Default

Value

DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: cleanout

Type: Simple

Geometric Network: WW_Network

Subtype Field: JUNCTION_SUBTYPE

Subtypes: Code 1 = Cleanout; Code 2 = Lamp Hole; Code 3 = Terminal

Field Name Data Type Alias LengthAllow NULL Values Geometry Type


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4.5 Feature Dataset and Field Name: CONNECTIVITY NODE





































Default

Value

DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: connectivity node

Type: Simple Junction Features




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4.6 Feature Dataset and Field Name: CONNECTOR WYE



3 ASSETID Long Integer ASSETID Yes



6 PIPE_ID Text PIPE_ID No 17

7 WYE_NO Text WYE_NO No 2

8 WYE_ID Text WYE_ID No 19

9 STATUS Text STATUS Yes 12


11 STAT_HUND Long Integer STAT_HUND Yes

12 STAT_TENS Double STAT_TENS Yes

13 WYE_SUBTYPE Long Integer WYE_SUBTYPE Yes 1

14 SIDE Text SIDE Yes wwDomainSide 1 Wye Side

15 DEPTH Short Integer DEPTH Yes

16 C_HUNDS Long Integer C_HUNDS Yes

17 C_TENS Double C_TENS Yes

18 C_DEPTH Short Integer C_DEPTH Yes

19 PL_HUNDS Long Integer PL_HUNDS Yes

20 PL_TENS Double PL_TENS Yes

21 PL_DEPTH Short Integer PL_DEPTH Yes

22 BOTTOM Short Integer BOTTOM Yes

23 TOP_ Short Integer TOP Yes

24 REHAB Text REHAB Yes wwDomainRehab 1 Rehabilitation

25 SPECIAL_STRUCT Text SPECIAL_STRUCT Yes wwDomainSpecStruct 1 Special Structure

26 REMARKS Text REMARKS Yes 32



29 USER_ID Text USER_ID Yes 8

30 TYPE Text TYPE Yes 50

31 SHAPE Geometry SHAPE Yes Line

32 SHAPE_Length Double SHAPE_Length Yes

Feature Dataset: Wastewater_NetworkName: connector_wye



Subtype Field: WYE_SUBTYPE

Subtypes: Code 1 = Vertical Tee; Code 2 = Chimney; Code 3 = Offset Chimney

Field Name Data Type Alias LengthAllow NULL Values Geometry TypeDefault

Value

DomainNo. Notes


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4.7 Feature Dataset and Field Name: LATERALS




4 DIAMETER Long Integer DIAMETER Yes

5 MATERIAL Text MATERIAL Yes 4

6 RECORDEDLENGTH Double RECORDEDLENGTH Yes

7 LATERALTYPE Short Integer LATERALTYPE Yes 1 1=Solid; 2=Dash

8 REHAB Text REHAB Yes wwDomaninRehab 1 Rehabilitation

9 SPECIAL_STRUCT Text SPECIAL_STRUCT Yes wwDomainSpecStruct 1

10 ATTACHMENT Text ATTACHMENT Yes 1






Default Value DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: laterals

Type: Simple


Subtype Field: LATERALTYPE

Subtypes: Code 1 = Solid; Code 2 = Dash



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4.8 Feature Dataset and Field Name: NON_STRUCTURE





5 BASIN Text BASIN Yes 5 Basin Number


7 STATUS Text STATUS Yes wwDomainMH_Status 10



10 LID_ELEV Double LID_ELEV Yes wwDomainMH_Elevation Lid Elevation in Decimal Foot


12 MHMATERIAL Text MHMATERIAL Yes wwDomainMH_Material 5

13 YEAR_INST Text YEAR_INST Yes 4 Year Installation in format YYYY


15 MH_BASE Text MH_BASE Yes wwDomainMH_Base 1 The way flow bottom MH is running




19 STREET1 Text STREET1 Yes 30 Street name of MH Location

20 STREET2 Text STREET2 Yes 30 Cross Street, if applicable

21 BLKNO Text BLKNO Yes 7 Block Number of MH Location



24 ROUTE Text ROUTE Yes 5 Sewer MH Route Number

25 SEQ Text SEQ Yes 7 Sequence Number












Default

Value

DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: non_structure




Subtypes: Code 1 = Stub; Code 2 = Outfall; Code 3 = Relief Valve; Code 4 = Gate Valve; Code 5 = Transition; Code 6 = Other

Valve



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4.9 Feature Dataset and Field Name: PHYSICAL STRUCTURE










10 LID_ELEV Double LID_ELEV Yes wwDomainMH_Elevation Lid Elevation in Decimal foot



13 YEAR_INST Text YEAR_INST Yes 4 Year installation in format YYYY


15 MH_BASE Text MH_BASE Yes wwDomainMH_Base 1 The way flow botttom MH is running




19 STREET1 Text STREET1 Yes 30 Street Name of MH Location

20 STREET2 Text STREET2 Yes 30 Crosss Street, if applicable





25 SEQ Text SEQ Yes 7 Sequence Noumber












Feature Dataset: Wastewater_NetworkName: physical_structure




Subtypes: Code 1 = Maintenance; Code 2 = Drop/Drop Trap; Code 3 = Terminal; Code 4 = Offset; Code 5 = Trap; Code 6 =

Diversion Structure; Code 7 = Special Shallow; Code 8 = Flush; Code 9 = Junction Chamber; Code 10 = Siphon; Code 11 = Weir;

Code 12 = Special Structure; Code 13 = Junction Structure; Code 14 = Other Structure; Code 15 = Valve Vault; Code 15 = Transition

Field Name Data Type Alias LengthAllow NULL Values Geometry TypeDefault Value DomainNo. Notes


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4.10 Maintenance Hole- Description

STRUCTURED_ID - Maintenance hole number. Composed of S-Map number, S-

Map grid number, and the maintenance hole number from S-map.

4.11 Code Description

Q Start of pipe.

B One pipe with the flow through maintenance hole in same direction.

F Two pipes with the flow coming into maintenance hole and leaving in the

direction as one of the other pipes.

G Three pipes with the flow coming into maintenance hole and leaving in the

direction as one of the other pipes.

H Two pipes with the flow coming into maintenance hole in different direction and

leaving in the direction as one of the other pipes and leaving in the opposite

direction as the other two.

HQ B F G


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4.12 Table Indexing and Stationing

Unique on Structure_ID

Normal Stationing Equated Stationing

Stations increase going UPSTREAM Equation of manhole stationing occurs whenever

there are discrepancies due to realignment or

reconnection of mainline sewers. Upstream station

Ahead and downstream station – Back are illustrated

below.

Offset Maintenance Hole

Show offset if offset is more than 0.2

2+5

0.00

0+0

0.00

0+0

0.00

AH

D

15+0

0.0

0 B

CK

10+0

0.0

0

2+5

0.00

1.2’

10+0

0.0

0

38

2.0

0 L

id E

lev.


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4.13 Mainline Sewer

1 Sewer Wye 13 Sewer Permit [Number-Year-Issued] [Year-District-Number]

2 Lateral 14 Non-Structure to be added when size of pipe changes

3 Sewer Wye drawn as a Tap 15 Non-Structure will be added where original structure were removed such as (Lamphole, TCS & Others) by new construction

4 Dash Lateral not built by plan 16 Stub to be added at the being 10 feet endless length is given greater where sewer line runs further then structure

5 Chimney (Mainline) 17 Abandoned sewer line

6 Offset Chimney (Property Line) 18 Terminal are in two different layers either Cleanout (Terminal Cleanout) or Physical Terminal Maintenance Hole

7 Mainline connection station 19 Chimney top and bottom depth

8 Mainline connection depth

9 Curb connection station

10 Curb connection depth

11 Property line connection station

12 Property line connection depth

Y=

1+

30

14

1 2

3 4

Y=0

+4

0

PL=

0+

20

5

6

CB

=0+2

0

7

8

10

6

9

10

11

(S8

45

10

12

3)

12

8” VCP

0.40% 10”

14

15 18

13

CH=0+60

Y=0+60

8 10 19

16 17


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4.14 Feature Dataset and Field Name: PHYSICAL STRUCTURE

ABANDONED









9 JUNCTION_SUBTYPE Long Integer TYPE Yes 1 Code 2 = Proposed; Code 3 = Inactive

10 LID_ELEV Double LID_ELEV Yes wwDomainMH_Elevation Lid Elevation in Decimal foot



13 YEAR_INST Text YEAR_INST Yes 4 Year installation in format YYYY


15 MH_BASE Text MH_BASE Yes wwDomainMH_Base 1 The way flow bottom MH is running




19 STREET1 Text STREET1 Yes 30 Street Name of MH Location

20 STREET2 Text STREET2 Yes 30 Cross Street, if applicable





25 SEQ Text SEQ Yes 7 Sequence Number












Default

Value

DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: physical_structure_abandoned

Type: Point Feature



Subtypes: Code 1 = Abandoned; Code 2 = Proposed; Code 3 = Inactive



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4.15 Feature Dataset and Field Name: PIPE






6 CLASS Short Integer PIPE_CLASS Yes 3 wwDomainClass 10

7 PIPE_SUBTYPE Long Integer PIPE_SUBTYPE Yes 1

8 UP_STRUCT Long Integer UP_STRUCT No UP Structure

9 DN_STRUCT Long Integer DN_STRUCT No Down Structure

10 PIPE_LABEL Text PIPE_LABEL Yes A wwDomainPipeLabel 1


12 ENG_DIST Text ENG_DIST No wwDomainDistrict 2 Engineering District


14 UP_INV Double UP_INV Yes UP Invert

15 DN_INV Double DN_INV Yes Down Invert

16 PIPE_LENG Double PIPE_LENG Yes Pipe Length

17 SLOPE_PCT Double SLOPE_PCT Yes Slope Percent

18 PIPE_SIZE Double PIPE_SIZE Yes Pipe Size

19 PIPE_WIDTH Double PIPE_WIDTH Yes Pipe Width

20 PIPE_MAT Text PIPE_MAT Yes wwDomainMaterial 4 Pipe Material

21 PIPE_SHAPE Text PIPE_SHAPE Yes wwDomainShape 4 Pipe Shape


23 STREET Text STREET Yes 25

24 BLOCK Text BLOCK Yes 7

25 LINER Text LINER Yes wwDomainLinerType 2 Pipe Lined

26 C_SLOPE Text C_SLOPE Yes wwDomainC_Slope 1 Calculated Slope

27 C_UP_INV Text C_UP_INV Yes 1 Calculated Up Invert

28 C_DN_INV Text C_DN_INV Yes 1 Calculated Down Invert

29 C_PIPE_LEN Text C_PIPE_LEN Yes 1 Calculated Pipe Length

30 UP_STA_100 Short Integer UP_STA_100 Yes

31 UP_STA_PLS Double UP_STA_PLS Yes

32 DN_STA_100 Short Integer DN_STA_100 Yes

33 DN_STA_PLS Double DN_STA_PLS Yes


35 NO_LAT Short Integer NO_LAT Yes

36 GRV_FM Text GRV_FM Yes wwDomainGrvFm 2 Gravity Force Main

37 EASEMENT Text EASEMENT Yes wwDomainEasement 1 Pipe Easement

38 PIPE_STATUS Text PIPE_STATUS Yes wwDomainPipeStatus 1


40 WYE_CON Short Integer WYE_CON Yes

41 MON_INST Text MON_INST Yes 2

42 PLAN1 Text PLAN1 Yes 12


44 PROF Text PROF Yes 12

45 WYEMAP Text WYEMAP Yes 12

46 HR_VER Text HR_VER Yes wwDomainHR_Ver 1 Field:HR_VER-Layer: Pipe

47 PCT_ENTRY Text PCT_ENTRY Yes wwDomainPCT_Entry 1

48 WYE_MAT Text WYE_MAT Yes 3 Wye Material

49 WYE_DIAM Double WYW_DIAM Yes Wye Diameter

50 WYE_LENG Double WYE_LENG Yes Wye Length

51 WYE_UPDATE Text WYE_UPDATE Yes 1

52 EST_UPINV Text EST_UPINV Yes 1

53 EST_DNINV Text EST_DNINV Yes 1

54 EST_MATL Text EST_MATL Yes 1

55 LINER_DATE Text LINER_DATE Yes 4

56 EST_YEAR Text EST_YEAR Yes 1

57 EST_YR_LEV Text EST_YR_LEV Yes 1

58 SLOPE2 Double SLOPE2 Yes

59 V_CURVE Text V_CURVE Yes wwDomainV_Curve 1 Vertical Curve

60 PCT_ENTRY2 Text PCT_ENTRY2 Yes wwDomainPCT_Entry 1

61 CAPACITY Double CAPACITY Yes

62 SYSTEM Text SYSTEM Yes wwDomainSystem 8

63 TRTMNT_LOC Text TRTMNT_LOC Yes wwDomainService 4


65 CRTN_DT Data CRTN_DT Yes

66 LAST_UPDATE Data LAST_UPDATE Yes


68 VDATUM Text VDATUM Yes wwDomainDatum 2

69 UP_MH Long Integer UP_MH Yes

70 DN_MH Long Integer DN_MH Yes

71 SAN_PIPE_ID Text SAN_PIPE_ID Yes 17



Notes

Feature Dataset: Wastewater_NetworkName: pipe

Type: Complex Edge Features


Subtype Field: PIPE_SUBTYPE

Subtypes: Code 1 = Gravity; Code 2 = Force Main; Code 3 = Airline; Code 4 = Siphon; Code 5 = Special Lateral


Value

DomainNo.


- 31 -

4.16 Pipe- Subtypes

PIPE_SUBTYPE – Used to indicate the type of flow the pipe is handling.

1 GR - Gravity

2 FM - Force Main

3 AL - Airline

4 SI - Siphon

5 SL - Special Lateral

4.17 Pipe- Status

PIPE_STATUS - List the status of pipes that are a part of the City’s Sewer System.

CODE DESCRIPTION COMMENTS

A AS-BID Design phase of plan.

F AS-BUILT Construction phase of plan.

I INACTIVE Pipes no longer in service and haven’t been

abandoned.

L LATERAL Lateral pipe for house connections that have

cleanouts.

P PROPOSED Pipes proposed to be constructed at a later date.

N NON-CITY Pipe owned by other agencies and /or

municipalities.

R AIRLINE Pipe used with siphons to relieve barometric

pressure in a siphon.

S SIPHON Pipe that goes under an immovable obstruction and

returns to its riginal grade.

T ABANDONED Pipe removed from service.

U UNKNOWN

4.18 Pipe- Shape

PIPE_SHAPE – Shape of the pipe cross.

BM Burns & McDonald

BOX Box

CIR Circular

SE Semi Elliptical

UNK Unknown


- 32 -

4.19 Pipe- Material and Abbreviations

PIPE_MAT - Listing of various materials that define the City’s sewer system.

Abbreviations for Pipe Material

ACP Asbestos Cement Pipe

CIP Cast Iron

CIPC Cast in Place Concrete

CON Concrete

DIP Ductile Iron Pipe

GFR Glass-Fiber Reinforced

HDPE High Density Polyethylene

PCP Polymer Concrete Pipe

PEP Polyethylene Pipe

PVC Polyvinyl Chloride

RCP Reinforced Concrete Pipe

RCPL Lined Reinforced Concrete Pipe

STL Steel

TCP Terra Cotta Pipe

UNK Unknown

VCP Vitrified Clay Pipe

B/C Brick Concrete

CMP Corrugated Metal Pipe

ABS Acrylonitrile Butadiene Styrene

4.20 Pipe- Liner and General Description

LINER - Indicates basic material used to rehab a pipe.

L Plastic

S Steel

T Tile

C1 Meyer Polycrete

C2 Other Polymer Concrete

F1 Ameron Bondstrand

F2 Chenneline

F3 Hobas

F4 Other Fiberglass

I1 Felt Resin

I2 Fiberglass Reinforced


- 33 -

P1 HDPE

P2 Spirolite

P3 Danby

P4 T-Lock

P5 Other Plastic

1. LINER_DATE – The installation year of liner in format (2014).

2. REHAB – Indicates if pipe has been rehabilitated. Yes / No option.

3. NO_LAT – The number of laterals served by pipe segment.

4. WYE_CON – The number of WYE connections served by the pipe segment.

5. EASEMENT – Yes or NO flag to denote whether or not the pipe is within an easement.

6. VDATUM - All pipes constructed before 1930 have a 5.775 adjustment to inverts.

7. PLAN1 – Improvement plan drawing number.

8. PLAN2 – Supplementary improvement plan drawing number.

9. PROF – The profile drawing number.

10. STREET – The street name on which the pipe is located.

11. BLOCK – The block number on which the pipe is located.

12. COMMENTS – Used for comments.

13. MON_INST – The month of the pipe installation.

14. YEAR_INST – The year of pipe installation, expressed in the format (2014).

4.21 Gravity Force Main

GVR_FM – Used to indicate the type of flow the pipe is handling.

AL Airline

AV Airvent

FM Force Main

GR Gravity

SI Siphon


- 34 -

4.22 Major Sewers/Outfall Systems

SYSTEM – Identifies the major sewer / outfall system the pipe is associated with.

AVORS Additional Valley Outfall Relief Sewer

CIS Coastal Interceptor Sewer

COS Central Outfall Sewer

ECIS East Central Interceptor Sewer

EVIS East Valley Interceptor Sewer

EVRS East Valley Relief Sewer

GBIS Glendale Burbank Interceptor Sewer

LCIS La Cienega Interceptor Sewer

NCOS North Central Outfall System

NEIS North East Interceptor Sewer

NORS North Outfall Relief Sewer

NOS North Outfall Sewer

RRS Robertson Relief Sewer

VORS Valley Outfall Relief Sewer

VOS Venice Outfall Sewer

WHIS Wilshire - Hollywood Interceptor Sewer

WLAIS West Los Angeles Interceptor Sewer

WRS Westwood Relief Sewer

LCSFVRS La Cienega / San Fdo. Valley Relief Sewer

MAZE Area of Many Sewer Junctions and Interconnectivity.

4.23 Pipe Ownership and General Information

OWNER – The agency or municipality that constructed the pipe.

COSA LA County Sanitation

CTY City of LA

FED Federal Facilities

OUTLA Adjoining Cities

PVT Private

1. WYEMAP – The WYE card number reference.

2. PCT_ENTRY – Flag determining if the slope was entered in percent as opposed to a

decimal. Y for Yes and N for NO.


- 35 -

3. PCT ENTRY2 – Flag determining if the slope2 was entered in percent as opposed to a

decimal. Y for Yes and N for NO.

4. HR_VER – Flag determining whether a segment of pipe is horizontal, vertical or both.

H – Horizontal Curve

V – Vertical Curve

B – Both horizontal and vertical slope.

5. V_CURVE – Yes or no flag for vertical curves, expressed as Y or N.

6. LINER_DATE – Date pipe was rehab with liner.

7. CRTN_DT – Date the record in the database was created.

8. LAST_UPDATE – Date when record was last updated.

9. USER_ID – Identifies the last person who updated the record.

10. UP_MH – Sanitation Field (automatically updated). Maintenance hole number

composed of no (Non Structure) except of the one Sanitation recognizes.

11. DN_MH - Sanitation Field (automatically updated). Maintenance hole number

composed of no (Non Structure) except of the one Sanitation recognize.

12. SAN_PIPE_ID - Sanitation Field (automatically updated). Maintenance hole number

composed of no (Non Structure) except of the one Sanitation recognizes.


- 36 -

4.24 Feature Dataset and Field Name: PIPE ABANDONED






6 CLASS Short Integer PIPE_CLASS Yes 3 wwDomainClass 10

7 PIPE_SUBTYPE Long Integer PIPE_SUBTYPE Yes 1

8 UP_STRUCT Long Integer UP_STRUCT No Up Structure

9 DN_STRUCT Long Integer DN_STRUCT No Down Structure

10 PIPE_LABEL Text PIPE_LABEL Yes A wwDomainPipeLabel 1


12 ENG_DIST Text ENG_DIST No wwDomainDistrict 2 Engineering District


14 UP_INV Double UP_INV Yes Up Invert

15 DN_INV Double DN_INV Yes Down Invert

16 PIPE_LENG Double PIPE_LENG Yes Pipe Length

17 SLOPE_PCT Double SLOPE_PCT Yes Slope Percent

18 PIPE_SIZE Double PIPE_SIZE Yes Pipe Size

19 PIPE_WIDTH Double PIPE_WIDTH Yes Pipe Width

20 PIPE_MAT Text PIPE_MAT Yes wwDomainMaterial 4 Pipe Material

21 PIPE_SHAPE Text PIPE_SHAPE Yes wwDomainShape 4 Pipe Shape


23 STREET Text STREET Yes 25

24 BLOCK Text BLOCK Yes 7

25 LINER Text LINER Yes wwDomainLinerType 2 Pipe Lined

26 C_SLOPE Text C_SLOPE Yes wwDomainC_Slope 1 Calculated Slope

27 C_UP_INV Text C_UP_INV Yes 1 Calculated Up Invert

28 C_DN_INV Text C_DN_INV Yes 1 Calculated Down Invert

29 C_PIPE_LEN Text C_PIPE_LEN Yes 1 Calculated Pipe Length

30 UP_STA_100 Short Integer UP_STA_100 Yes

31 UP_STA_PLS Double UP_STA_PLS Yes

32 DN_STA_100 Short Integer DN_STA_100 Yes

33 DN_STA_PLS Double DN_STA_PLS Yes


35 NO_LAT Short Integer NO_LAT Yes

36 GRV_FM Text GRV_FM Yes wwDomainGrvFm 2 Gravity Force Main

37 EASEMENT Text EASEMENT Yes wwDomainEasement 1 Pipe Easement

38 PIPE_STATUS Text PIPE_STATUS Yes wwDomainPipeStatus 1 Pipe Status


40 WYE_CON Short Integer WYE_CON Yes

41 MON_INST Text MON_INST Yes 2



44 PROF Text PROF Yes 12

45 WYEMAP Text WYEMAP Yes 12

46 HR_VER Text HR_VER Yes wwDomainHR_Ver 1 Field: HR_VER-Layer:Pipe

47 PCT_ENTRY Text PCT_ENTRY Yes wwDomainPCT_Entry 1

48 WYE_MAT Text WYE_MAT Yes 3 Wye Material

49 WYE_DIAM Double WYW_DIAM Yes Wye Diameter

50 WYE_LENG Double WYE_DOUBLE Yes Wye Length

51 WYE_UPDATE Text WYE_UPDATE Yes 1

52 EST_UPINV Text EST_UPINV Yes 1 Estimated Up Invert

53 EST_DNINV Text EST_DNINV Yes 1 Estimated Dn Invert

54 EST_MATL Text EST_MATL Yes 1

55 LINER_DATE Text LINER_DATE Yes 4

56 EST_YEAR Text EST_YEAR Yes 1

57 EST_YR_LEV Text EST_YR_LEV Yes 1

58 SLOPE2 Double SLOPE2 Yes

59 V_CURVE Text V_CURVE Yes wwDomainV_Curve 1 Vertical Curve

60 PCT_ENTRY2 Text PCT_ENTRY2 Yes 1

61 CAPACITY Double CAPACITY Yes

62 SYSTEM Text SYSTEM Yes 8

63 TRTMNT_LOC Text TRTMNT_LOC Yes wwDomainService 4


65 CRTN_DT Data CRTN_DT Yes

66 LAST_UPDATE Data LAST_UPDATE Yes



69 UP_MH Long Integer UP_MH Yes Up Maintenance Hole

70 DN_MH Long Integer DN_MH Yes Down Maintenance Hole

71 SAN_PIPE_ID Text SAN_PIPE_ID Yes 17



Feature Dataset: Wastewater_NetworkName: pipe_abandoned

Type: Line


Subtype Field: PIPE_SUBTYPE

Subtypes: Code 1 = Ababdoned; Code 2 = Proposed; Code 3 = Inactive


Value

DomainNo. Notes


- 37 -

4.25 Feature Dataset and Field Name: PLANT





































Feature Dataset: Wastewater_NetworkName: plant




Subtypes: Code 1 = Air Treatment; Code 2 = Water Treatment; Code 3 = Pump Plant


Value

DomainNo. Notes


- 38 -

4.26 Feature Dataset and Field Name: PSEUDO-POINT

4.27 Feature Dataset and Field Name: PUMP STATION




Default Value DomainNo.

Feature Dataset: Wastewater_NetworkName: pseudo_point

Type: Simple Junction Feature

























23 MDIST Text MDIST Yes 5 Maintenance District














Feature Dataset: Wastewater_NetworkName: pump_station




Subtypes: Code 1 = Pump Station; Code 2 = Wet Well


Value

DomainNo. Notes


- 39 -

4.28 Feature Dataset and Field Name: WYE






6 PIPE_ID Text PIPE_ID NO 17

7 WYE_NO Text WYE_NO NO 2

8 WYE_ID Text WYE_ID No 19

9 STATUS Text STATUS Yes 12


11 STAT_HUND Long Integer STAT_HUND Yes

12 STAT_TENS Double STAT_TENS Yes

13 WYE_SUBTYPE Long Integer WYE_SUBTYPE Yes 1

14 SIDE Text SIDE Yes wwDomainSide 1 Wye Side

15 DEPTH Short Integer DEPTH Yes

16 C_HUNDS Long Integer C_HUNDS Yes

17 C_TENS Double C_TENS Yes

18 C_DEPTH Short Integer C_DEPTH Yes

19 PL_HUNDS Long Integer PL_HUNDS Yes

20 PL_TENS Double PL_TENS Yes

21 PL_DEPTH Short Integer PL_DEPTH Yes

22 BOTTOM Short Integer BOTTOM Yes

23 TOP_ Short Integer TOP Yes


25 SPECIAL_STRUCT Text SPECIAL_STRUCT Yes wwDomainSpecStruct 1 Special Structure





30 TYPE Text TYPE Yes 50



Default

Value

DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: wye

Type: Simple Edge Features


Subtype Field: WYE_SUBTYPE

Subtypes: Code 1 = Wye; Code 2 = Tap; Code 3 = Tee; Code 4 = Chimney; Code 5 = Vertical Tee Riser; Code 6 = Chimney

Riser; Code 7 = Vertical Tee; Code 8 = Siphon; Code 9 = Special Case; Code 10 = Spur; Code 11 = Unclassified; Code 12 =

Offset Chimney Riser; Code 13 = Wye drawn as a Tap



- 40 -

4.29 Feature Dataset and Field Name: WYE ADDRESS


2 WYE_ADD_ID Long Integer WYE_ADD_ID No

3 HOUSE_NO Long Integer HOUSE_NO No House Number

4 HOUSE_EXT Text HOUSE_EXT No 3 House Extension

5 ST_DIR Text ST_DIR No 2 Street Direction

6 ST_NAME Text ST_NAME No 32 Street Name

7 ST_TYPE Text ST_TYPE No 4 Street Type

8 HOUSE_UNITS Text HOUSE_UNITS No 10

9 PAR_ID Long Integer PAR_ID No

10 POLYGONID Long Integer POLYGONID No

11 SCALE Double SCALE No

12 ANGLE Double ANGLE No


Default Value DomainNo. Notes

Feature Dataset: Wastewater_NetworkName: wye_addresss

Type: Point Features




- 41 -

4.30 Wye- Field Names

CODE DESCRIPTION CODE DESCRIPTION CODE DESCRIPTION

1 WYE 6 CHIMNEY RISER 11 UNCLASSIFIED

2 TAP 7 VERTICAL TEE 12 OFFSET CHIMNEY

RISER

3 TEE 8 SIPHON 13 WYE DRAWN AS A

TAP

4 CHIMNEY 9 SPECIAL CASE

5 VERTICAL TEE

RISER

10 SPUR

4.31 Wye- Description and Types of Sewer Connections

1. WYE_ID – This is a combination of the PIPE identifier and a sequential WYE number. It

relates to geodatabase files and Oracle table PERMIT.

2. PIPE_ID – The PIPE identifier.

3. STAT_HUND – The hundreds portion of the stationing.

4. STAT_TENS – The tens portion of the stationing.

5. TYPE – The type identifier for the sewer connection. Acceptable value include:

CODE DESCRIPTION

C Chimney

F Vertical Tee Riser

O Offset Chimney Riser

R Chimney Riser

S Siphon

SC Special Case

SPUR Spur

T Tap

V Vertical Tee

W Wye

X Unclassified

Z Wye Drawn as a Tap

PL Connects to a Chimney at Property Line

6. SIDE – Looking upstream, this is the side of the pipe to which the structures are attached.

Acceptable values include:

CODE DESCRIPTION

C Center

L Left

R Right

U Unknown

7. DEPTH – The depth of the WYE.

8. C_HUND – The hundreds portion of the stationing at the curb line.

9. C_TENS – The tens portion of the stationing at the curb line.

10. C_DEPTH – The depth of the service connection at the curb line.

11. PL_HUND – The hundreds portion of the stationing at the property.


- 42 -

12. PL_TENS – The tens portion of the stationing at the property line.

13. PL_DEPTH – The depth of the service connection at the property line.

14. BOTTOM – The depth at the bottom of chimney.

15. TOP – The depth at the top of chimney.

4.32 Wye Map Abbreviations

Wye Map

ABBREVIATION DEFINITION

"C" House connected to the sewer, no permit issued.

(M) House connection tagged (Brick & Wire) or (Brick & Tag)

AF Additional Fees

B Bonded sewer Fees Paid

B Bonded sewer Fees Due

C County sewer permit requires county approval

CCOF Former name of sewer facilities charge

CE County Engineers

CH Chimney

CS County Sanitation District

DMH Drop Maintenance Hole

FB Field Book

FT Flush Tank

HC House Connection

LH Lamphole

MH Maintenace Hole

NC No Charge Permit

NDT Negative Dye Test

NI Not Inspected

NU Not Used

OP Connection charge Outlet sewer Fees

OF Connection charge Outlet sewer Fees Due

P. & P. Plan and Profile

PDT Positive Dye Test

PL Property Line

PWA Constructed by Public Works Administration

R Revised Invert Elevation


- 43 -

REC Reconnect

REP Repair

SC Sewer Capped

SF Special Fee for House Connection Sewer Due

SF Special Fee for House Connection Sewer Paid

SFC Sewer Facilities charge

TAP Tap House Connection

TCS Terminal Cleanout Structure

TMH Terminal Maintenance Hole

VT Vertical "T" House Connection

W Waiver

WEIR MH Weir Maintenance Hole

WPA Constructed by works Progress Administration

X Permit Issued to other address, Repair by others

Y Wye Outlet

[ ] REL Replace

[167H52] Hollywood Permit, Permit Issued

[NR-36] No Record of Permit, Permit Issued

[S95500003] Sewer House Connection Permit

[V. PER] Venice Permit, No Record, Permit Issued


- 44 -

4.33 Connectivity of the Wastewater Network

Subtypes in the Wastewater Network

WW_Network_Junctions

cleanout



Cleanout (Code =

Lamp Hole (Code = 2)

Terminal (Code = 3)

laterals

Dash

Solid

wye

Chimney

Chimney

Riser Offset Chimney Riser

Siphon Special Case

Spur

Tap

Tee

Unclassified

Vertical Tee

Vertical Tee Riser Wye

Wye Drawn as Tap

connectivity_node

connectivity_node

Chimney

Offset Chimney

Vertical Tee

connectivity_wye

(continue on the next page )


- 45 -

Gate Valve

Other Valve

non_structure

Outfall

Relief Valve

Stub

Transition

physical_structure

Diversion Structure

Drop / Drop Trap

Flush

Junction Chamber

Junction Structure

Maintenance

Offset

Special Shallow

Special Structure

Trap

Other Structure

Siphon

Terminal

Transition

Valve Vault

Weir

pump_station

Pump Station

Wet Well

(Continue on the next page)


- 46 -

Air Treatment

Pump Plant

plant

Water Treatment

pipe

Gravity (default Code = 1

Force Main (Code = 2)

Airline (Code = 3)

Siphon (Code = 4)

Special Lateral (Code = 5)

pseudo_point

pseudo_point

Documents

WASTEWATER Database and DATA Dictionary...WASTEWATER DATABASE AND DATA DICTIONARY - 1 - CHAPTER 2 INTRODUCTION 1.1 Purpose and Scope This purpose of this document is to present an