Codelist Overview

Link to form for Codelist Suggestions and Errors (opens new window)

The TS_AsBuilt Codelist is numeric based similar to the FeatureSurvey codelist.

It is to create standard CAD layers within the DWG so that other users can easily understand what has been produced.

Feature Surveys and AsBuilt Surveys need to be completed in seperate jobs within Trimble Access because the codes are not interchangeable.

The only exception is Stormwater drainage where that is located in both the service master file and the feature survey.

Codelist Changes - Survey of Utilities

Introduction

The survey codelist has been updated for 2023. In particular there have been changes to the utility attributes The purpose of the updates is to provide a clearer understanding of the utilities present and the information available in the area of interest. Most of the actual numeric codes used in the field have not changed.

Attributes changes

Some attributes have been removed from pits and surface features so that those that aren’t required are no longer listed. See examples below.

The naming of some attributes has changed to better reflect their meaning or a change in the way we record the utility data.

Old	New	Note
Item	Feature	This is just a name change, it describes the physical feature being surveyed. Pipe, pit or cable etc
Quality	Method	This change means there will be no need to interpret the quality level of the location method. More details below.
Size	Size-Bank	Recording of multiple conduits (banks) for existing utilities is always a challenge for survey codelist. With codelist updates we will be recording the bank details in a couple of ways. The Size-Bank field will be used to record a description of the bank e.g. 6x100 or 3x50 & 2X100. See below for details on recording banks. More details below
Sub_item	Sub-type	This is just a name change, it describes the sub type of utility
Type	Status	This is just a name change, it describes the status of the utility e.g existing, redundant, as-built. We have added “removed” in order to track changes once site works commence..

Banks

There are 3 attributes that need to be recorded in order to model a bank of conduits. SIZE-BANK as described above is used to give a description of the conduits within the bank. e.g. 6x100 or 3x50 & 2x100. In addition there are 2 new attribute fields BANK-WIDTH and BANK-HEIGHT. These 2 fields are used to record the height and width in millimeters instead of the config attribute. Whilst it's clear that the information may not always be available in the field if it is recorded where possible it will enable more accurate modeling of banks in CAD.

The attributes BANK-HEIGHT and BANK-WIDTH can also be used to describe the dimensions of a culvert.

Method

The method attribute is describing the method by which the utility has been identified and measured. To better represent this, Direct has been changed to Visual. Visual is to be used when a utility has been visually identified in a pit etc or surveyed as-built, Non destructive digging (NDD) has been added as a separate method so that locations where the asset has been proven can be more easily identified in CAD.

The options for methods are:

• Trace - Most utilities that are located without excavation use this method.

• NDD - Where there has been an excavation to prove an asset

• Visual - Used for when a utility has been identified at a pit.

• GPR - Ground penetrating radar is really only used for gas and water PE or PVC pipes. The utility locator will usually note where this method has been used.

• BYDA - DBYD has changed its name. This won’t be used much in the field.

• Other - Sometimes a utility locator will mark something out based on a bitumen scar or similar. They might mark this as QL-C. Anything that doesn’t conform to one on the above methods should be recorded as other with basic details given in comments.

Sub-Type

Sub-type has been refined to more specifically describe the subtype of utility, therefore some things have been removed from this attribute, for example:

• For drainage invert will now only be recorded in the position field. And the subtype of drainage will only be gravity or pressure.

• The subtype for non fibre-optic comms has changed from coaxial to copper.

• Recycled water and fire service have been included as subtypes of water. And are no longer separate utilities.

Rail Infrastructure

There has been a lot of confusion with identifying and recording of existing rail assets and in particular whether something is comms, electrical or signals. Where the asset sud-type is unknown we should use a basic rule of orange conduit as signals and white as comms. The sub-type of CSR can be used where these assets are combined in a bank configuration.

Also note for Victrack fibre optic assets should be recorded by sub-type Comms Fibre Optic, and owner VicTrack.

Abbreviations

DB cable or DB is used by utility locators to identify a direct buried cable. This can be recorded with the feature attribute of cable. MT is empty E.O.T or L.O.S essentially mean the same thing . End of trace or loss of trace. Which indicates that the locator is unable to continue the trace beyond that point. E.O.R is the end of rod. A rod is a traceable rod inserted in an empty or non traceable asset. Most locators carry an 80m rod, but could also be stopped short of that distance due to blockage.

Utility Data Manager

On NWPA projects the workflow will change with field surveyors still producing their daily DWG and correcting any errors in that file but the Utility Data Manager now responsible for inserting the daily files into the master file. As a result the utility master file held in the working folder will be a copy of the master file. Therefore any changes made to this file will be lost.

If you notice any errors in the master file contact the utility data manager with the changes required.

Pipe Sizes

Whilst a utility locator will generally spray up the size of utilities the following may be useful when looking in pits or doing as built surveys.

Most conduit or pipe sizes are described by their internal diameters. (Although it varies by pipe size, material and specification of the pipe). The main exception to this is Polyethylene (PE) pipe. Which is described by its external size.

Standard sizes

Electrical (orange) 20, 25, 32, 40, 50, 63, 80,100, 125, 150, 200

Comms (white) 20, 25, 32, 40, 50, 80, 100, 150, 200

Those shown in red are less commonly used.

Smaller drainage pipes could be any size 100, 125, 150 but once you get to 225 pipes sizes increases in 75mm increments up to 1050 and then 150mm- 225, 300, 375, 450, 525, 600, 675, 750, 825, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950, 2100

Service Attributes

Attribute	Description	Gas Pipe located	Comms Bank Located	Water Pipe NDD
UTILITY	The main utility type.	GAS	COMMS	WATER
SUB-TYPE	A breakdown utilities based on capacity or other features unique to that utility for example Comms- Copper or Comms-Fibre Optic	HIGH PRESSURE	FIBRE OPTIC	POTABLE
FEATURE	A description of the feature being located or surveyed. Most subsurface utilities should be recorded as pipe.	PIPE	BANK OF CONDUITS	PIPE
SIZE-BANK	The diameter of the pipe in mm eg 100 or the description of a bank eg. 4x100 or 2x125 & 3x63.	100	6x100	100
MATERIAL	A list of pipe materials. In the case of a bank made of 2 or more material eg PVC and AC use MIXED	CI	PVC	PVC
BANK-WIDTH	Where a bank has been recorded as a single line the BANK-HEIGHT should be recorded (if known). This field can also be used to describe culvert width	NA	400	NA
BANK-HEIGHT	Where a bank has been recorded as a single line the BANK-HEIGHT should be recorded (if known). This field can also be used to describe culvert height	NA	250	NA
DEPTH	The depth as recorded by the utility locator. recorded at each point of the locate	0.7	0.6	0.9
OWNER	The owner of the utility	APA	TELTRSA	SOUTH EAST WATER
POSITION	The position that the utility has been measured either directly or where depth has been recorded to.	MIDDLE	MIDDLE	TOP
METHOD	The method used to locate the utility. See section on utility locate methods. The method informs the quality level.	TRACE	TRACE	NDD
STATUS	status of the asset at the date and time of the survey	EXISTING	EXISTING	EXISTING
PHOTO	To be used for NDD holes and any other purpose that assists in understanding.	123456.jpg
COMMENTS	General comments by the locator, NDD crew or Surveyor
SOURCE	The CSV file name that was used to create the data. Automated field	CE20220424.csv	CE20220424.csv	CE20220424.csv
SC	Special codes used for field survey

Pit and Feature Attributes

Attribute	Sewer Pit	VicTrack Pit	Water Valve
UTILITY	SEWER	RAIL	WATER
SUB-TYPE	GRAVITY	COMMS OPTIC FIBER	POTABLE
FEATURE	PIT	PIT	VALVE
PIT-DEPTH	2.31	0.55	Attribute not used
OWNER	YARRA VALLEY WATER	VICTRACK	YARRA VALLEY WATER
STATUS	EXISTING	EXISTING	EXISTING
PHOTO	123456.jpg	123456.jpg	123456.jpg
COMMENTS
SOURCE	CE20220424.csv	CE20220424.csv	CE20220424.csv
SC