Attachment A4 - GLWA CAD BIM Standards - Version 0.0.pdf

GREAT LAKES WATER AUTHORITY

Computer Aided Drafting and Design and Building Information Modeling Standards Manual

Great Lakes Water Authority Water and Wastewater Engineering Teams

Great Lakes Water Authority CAD and BIM Standards Manual ii

Contents Introduction

General Requirements

2.1 Introduction

2.2 Applicability

Converting Existing Drawings to GLWA Guideline

2.3 Software

File Management

3.1 File Storage

Project Files Folders

Submittal Files Folders

Quality Assurance/ Quality Control (QA/QC)

Client

3.2 File Naming

Model, Base and Drawing File Naming

Level 1: Facility

Level 2: Discipline

Level 3: Structure/Area Designator

Level 4: Structure Level, Revit Version, or Drawing Number

Sample Files Names

Drawing Numbering

Level 1: Discipline

Level 2: Structure/Area Designator

Level 3: Drawing Type Designators

File Creation and Setup

4.1 AutoCAD and Civil 3D Files

Coordinates

Referencing Files

Title block

4.2 Revit Files

Collaboration

Coordinates iii

Linked Models

Title Block

Drafting and Modeling Standards

5.1 Drawing Layout

Plans

Viewports

Section and Detail Sequencing

Scales

Units

General Notes, Schedule, and Legends

Key Notes

Plan and Profiles

5.2 Layer Naming Conventions

Level 1: Discipline Designator

Level 2: Major Group

Level 3: Minor Group

Level 4: Modifier

Level 5: Status or Phase

5.3 Text Styles

Standard Text Settings

Leaders

5.4 Dimensions

Dimension Location

Dimension Text

Dimensioning Base Lines

Arrowheads and Leaders

Diameters, Radii, and Angles

Dimension Units

5.5 Line Types

AutoCAD and Civil 3D Lines

Revit Lines

Match Lines iv

5.6 Phasing

AutoCAD and Civil 3D

New Conditions

Existing Conditions

Future Conditions

Revit

Overview

Existing Conditions

New Construction

Demolished Conditions

Temporary Conditions

Future Conditions

5.7 Revit – Level of Development (LOD)

5.8 Civil 3D Standards

Coordinate Labeling

Digital Terrain Models (Surfaces)

Surface naming Convention

Surface display and labeling

Alignment Baseline Stationing

Cross and Parallel Underground Utilities

Facility and Yard Piping Connection Point Location

Pipeline Labeling

Pipeline Modeling

Pipeline Illustration and Layout Table

5.9 Symbology

North Arrow

Sections and Details

Bar Scales

5.10 Cover Drawing

5.11 Title Block

Format

Sign off Areas v

5.12 Formats Addendum and Change Order Sketches

5.13 Standard Detail Format

Contract Drawing Lifecycle

6.1 Overview

6.2 Bid Set

6.3 Addendum

6.4 Conformed

6.5 Construction

6.6 Record

Plotting

AutoCAD and Civil 3D Plotting

Revit Plotting

File Maintenance

8.1 File Size

AutoCAD and Civil Files

Revit Files

8.2 Purge and Audit

8.3 Delete Corrupt Data

8.4 Miscellaneous

8.5 File Backup

Quality Control

9.1 Quality

Conclusion

Tables Table 1: Discipline Designator

Table 2: Structure/Area Designator Example

Table 3: Base File Types

Table 5: Drawing Type Designators

Table 6: Phase Characters

Table 7: Pipeline Illustration vi

Figures

Figure 1: Matchline Example

Figure 2: Standard Detail Preparation Guidelines

Figure 3: Revision Descriptions

Figure 4: Record Drawing Stamp

Appendices

Appendix A ............................................................................................................................................ Facility Codes

Appendix B ............................................................................................................................... Legends and Symbols

Appendix C .................................................................................................................................... Layer Descriptions

Appendix D .................................................................................................................. Index of Native Files Available

Appendix E (future) ...................................................................................................................... BIM Implementation

Revision

Date

Section

Number Description of Change Revised By

Published Date: May 2022

Version 0.0

Introduction The Great Lakes Water Authority (GLWA) has established this Computer Aided Drafting and Design (CAD) and

Building Information Modeling (BIM) Standards Manual (the Manual) to establish uniform guidelines regarding the exchange of information on engineering drawings, to be used by users (e.g., consultants, engineers, contractors, vendors, etc.) that work on GLWA projects. It does not anticipate all possibilities. The manual will be an evolving document that will be updated as needed and all users shall ensure they have checked the GLWA website for the latest version. If users are unsure where to obtain, follow up with a representative from GLWA.

The quality of drafting and modeling is an important ingredient in maintaining consistency and uniformity.

Consistency and uniformity are the hallmark of a well-received set of plans and the foundation of a quality design.

All parties contracted with GLWA to generate drawings shall use the Manual to execute work in accordance with the requirements of their contract. It is understood that exceptions and deviations from this Manual may be necessary and desirable for some projects. The GLWA Project Manager (PM), with assistance from the GLWA

CAD Standards Committee, shall approve any such exceptions or deviations and any such approval shall be in writing.

This Manual, and all documents and data files prepared in accordance with the Manual, are the property of

GLWA. The Manual, documents and files are furnished for use solely in connection with work performed for a specific GLWA project, and permission is granted only for such use. Users agree not to permit third parties to copy or use the CAD and BIM Standards Manual or any document or file for any other purpose.

Within this Manual, GLWA will provide users with appropriate CAD and BIM related layering guidelines, drawing templates, script files, general symbols, and appropriate cover drawing and project border drawing with attributes and parameters developed by GLWA. This material is supplied as an aid in conformance to GLWA CAD and BIM

Standards and to enhance efficiency when placing GLWA standard symbology.

All drawing files created (new) or modified (previously existed in another standard) by any user and subsequently submitted to GLWA shall conform to the standards and procedures specified by this manual, unless waived in writing by GLWA. The standards to be implemented by the user are the current version of CAD Standards in place at 30% completion of the user’s project deliverable milestone phase. The user shall be responsible for obtaining the CAD standards from the GLWater.org website, or request from the GLWA Project Manager if none are published on the website. The CAD and BIM instructions contained herein are intended for use on GLWA projects only and may be revised at any time due to changing conditions/project requirements.

Where GLWA furnishes CAD files on which users of this manual are to build on, it is the user’s responsibility to verify the accuracy of drawings and files furnished by GLWA. Users are referred to the requirements of their executed contracts regarding the user’s responsibility for verify all conditions of the scope of work for which the user is responsible.

Please refer all questions regarding the GLWA CAD and BIM Standards Manual to:

Great Lakes Water Authority – CAD Standards Committee CADandENG_Standards@glwater.org;

Accompanying Information Listed on GLWA Website

Version 0.0

General Requirements

2.1 Introduction

This manual represents the guidelines to be used for the development of all contract drawings and report figures, regardless of the GLWA operating unit or business entity. It is intended to ensure uniformity of appearance for contract/construction drawings created using AutoCAD, Civil 3D, or Revit. This manual will be continually updated to maintain consistency with industry and GLWA requirements.

2.2 Applicability

The practices and guidelines referenced in this manual shall be used for all contract/construction drawings, record/as-built drawings (generated by Users during design or Users during/after construction), report figures, or other contract documents used on GLWA projects that require CAD drafting in which GLWA will own the CAD files (contract drawings). In the event of a conflict between this manual and contractual requirements, users and their subs are expected to adhere to and follow the requirements called for in the contract for that project.

Exceptions to this general rule may exist and it is expected that the User clarifies any exception in writing from

GLWA. One such exception is contract shop drawings. These are typically produced by a third-party manufacturer and will not be required to adhere to GLWA CAD and BIM standards. However, model parts supplied and incorporated from a third party user (BIM families or other) shall conform to this standard to the extent practical.

Deviation from these standards for any reason other than client mandated standards shall not be permitted.

This Manual and the guidelines within are intended to generally complement National CAD Standards, whereas

National CAD Standards shall be followed for topics that are not specifically represented in this Manual. This

Manual will be updated to support future releases of AutoCAD, Civil 3D, Revit, and other Autodesk products to conform to other standards and protocols as guidelines as they are developed. This Manual shall not be considered complete, but rather an evolving document that describes GLWA current guidelines and procedures for contract drawings production. Users shall adhere to these standards as they evolve up to 30% completion of contract drawings as a part of base contract pricing. Changes thereafter to adhere to the standard, if GLWA so desires, shall be handled as are other contractual changes.

Converting Existing Drawings to GLWA Guideline

These guidelines are written with an emphasis to define the setup of new drawing files. However, GLWA will also plan to convert existing CAD drawings to comply with this Manual. In general, consideration for the drawing attributes listed within the Manual shall be accommodated. In addition, there are several considerations specific to a conversion shall be addressed to ensure that the converted file aligns with this guideline, including but not limited to:

Templates o Utilize new templates to fullest extent

External References o Existing files to be used as an external reference shall be converted

Version 0.0 o Remove annotation and text from the external referenced file

Layering o Import new layers from templates provided o Perform a “Layer Walk” and make corrections to objects on wrong layer, purge when layer walk is completed then do an audit

Civil AutoCAD to Civil 3D o Where sufficient information exists, create an existing pipe network using Civil 3D o Annotation can remain as AutoCAD objects

2.3 Software

Applicable software is shown in the table below. Refer to project contract for software requirements.

Developer Software Version Native format Use / Discipline

Autodesk AutoCAD 2020 or later .dwg

Modelling / Authoring

Instrumentation

Process Mechanical

Structure

Architectural

MEP

Autodesk Civil 3D 2020 or later .dwg (Civil 3D)

Modelling / Authoring

Civil infrastructure

Earthworks

Autodesk Revit 2020 or later .rvt

Modelling / Authoring

Process Mechanical

Structure

Architectural

MEP

File Management When starting a project, users must first have the appropriate project site created with GLWA standard folder structure described in Section 3.1. As files are created, they should follow the naming convention in Section 3.2 and be placed in the appropriate folder on the project site.

Users shall plan to host their own BIM 360 Project Site for each project. Where this is not possible, coordinate with the GLWA Project Manager to have GLWA host the BIM 360 Project Site.

Version 0.0

3.1 File Storage

The standards for file storage are based on utilizing BIM 360 as common data environment.

GLWA must approve other methods of storage before use. Upon project completion, files shall be provided to

GLWA, unless required by contract to be provided more often.

Project Files Folders

The project files folder within BIM 360 contain all the project working files related to drawing development. The folder structure shall be as shown below:

01-WIP: The Work in Progress (WIP) folder will contain all project-related drawing files, including discipline, external references, and miscellaneous subfolders.

Version 0.0

02-Reference_Files: This folder is available for the drawing development team for saving reference information related to drawing creation.

03-BIM Management & Coordination: This folder is available for instruction and information related to managing and coordinating the drawing development.

Submittal Files Folders

The submittal files folder structure within BIM 360 shall be determined based on the agreed upon submittals within the project contract. Below is an example:

Quality Assurance/ Quality Control (QA/QC)

The QA/QC folder is provided for internal review ahead of the final deliverable. PDFs of the drawings, along with the CAD files from which the PDFs were plotted, shall be provided at specific dates determined per project.

Additional QA/QC folders can be added as necessary.

Client

The Client folder is provided for the final deliverable. PDFs of the drawings, along with the CAD files from which the PDFs were plotted, shall be provided at specific dates determined per project.

3.2 File Naming

All drawing files shall be named in accordance with the rules set out in this section unless specific project or client requirements dictate.

All drawing file names must be assigned in a logical and consistent manner so any user may access the files as required. GLWA CAD Management staff or experienced CAD users will be assigned the responsibility of

Version 0.0 maintaining consistent individual directories for each project, cataloging file names used, and verifying that the names used are consistent with these standards.

File naming procedures for AutoCAD and Civil 3D drawings are based on the concept of one drawing (layout) per file, multiple layouts shall not be used.

This drawing file numbering allows for electronic sorting of drawing files in the order of facility then discipline then structure then drawing type. The drawing numbering system allows for all disciplines to be sorted by facility number.

Model, Base and Drawing File Naming

Model files are in reference to Revit files. Base files are 2D or 3D AutoCAD/Civil 3D files that contain the digital linework or model components of a project. These are the files referenced into a drawing file. Drawing Files contain the title block are used to create the plot files from the model or base files. For Revit work, drawings are contained within the Model File.

Level 1: Facility

The first level is an alpha-numerical Facility code based on the facility the project is located in. See Appendix A -

Facility Codes.

FFFFF-D-SA-ZZZ

Level 2: Discipline

The second level is a one-character discipline designator.

FFFFF-D-SA-ZZZ

Discipline designators are shown in Table 1. Use only the discipline designators required for the project. The numerical component represents the sort order of the drawings.

Table 1: Discipline Designator

G 01 General D 10 Process

H 02 Hazardous Materials M 11 Building Mechanical (HVAC)

X 03 Demolition P 12 Plumbing

V 04 Survey/Mapping F 13 Fire Protection

B 05 Geotechnical E 14 Electrical

C 06 Civil T 15 Telecommunications

Version 0.0

Table 1: Discipline Designator

L 07 Landscape I 16 Instrumentation

S 08 Structural R 17 Reference

A 09 Architectural Z 18 Contractor / Shop Drawings

O 19 Operations

Level 3: Structure/Area Designator

The third level is two numerical characters for structure or area designation. General, Sitework, and Underground utilities shall always have the same area number as shown in table 2. All other structures and areas shall be assigned per project.

FFFFF-D-SA-ZZZ

Table 2: Structure/Area Designator Example

00 General/Details

01 Sitework

02 Underground Utilities

03 Structure/Area (i.e., Storm Pump Station)

04 Structure/Area (i.e., Sanitary Pump Station)

Level 4: Structure Level, Revit Version, or Drawing Number

The fourth level is determined by the file type. For base files this will be defined by the file type and numerical characters to represent multiple files of the same type. See table 3 for base File Types. For Revit model files this will be the Revit version RXX where XX is the version year being used for the project i.e., R20 for Revit 2020. For drawing files this will be the drawing number. Drawing numbering information can be found in Section 3.3.

FFFFF-D-SA-ZZZ

Table 3: Base File Types

Description Abbreviation

Floor Plans (Ascending from Grade) FP#

Version 0.0

Table 3: Base File Types

Roof Plans RP#

Elevations EL#

Site Plan SP#

Section SC#

Schedules SH#

3D Isometrics 3D#

Plan and Profile PP#

Legends LG#

Foundation Plan FN#

Sample Files Names

The following are examples of File Names

Sample Model, Base and Drawing File Names

Description File Name

Mechanical Base file for the second floor of facility CSCON area 05

CSCON-E-05-FP2.dwg

Civil Base file for sitework for facility CSCON CSCON-C-01-SP1.dwg

Plan and Profile for underground utilities for CSCON CSCON-C-02-PP1.dwg

Mechanical Model file for facility CSCON area 03 that is being done in Revit 2020

CSCON-M-03-R20.rvt

General Model file for facility CSCON that is being done in Revit 2021

CSCON-G-00-R21.rvt

Electrical Model file for facility CSCON area 04 that is being done in Revit 2020

CSCON-E-04-R20.rvt

Drawing file for Structural section at facility CSCON area 04. CSCON-S-04-S04-301.dwg

Drawing file for Architectural details at facility CSCON area 04.

CSCON-A-04-A04-501.dwg

Drawing file for Electrical first floor plan at facility CSCON area 04.

CSCON-E-04-E04-101.dwg

Version 0.0

Drawing Numbering

Level 1: Discipline

The first level is one alphabetical character discipline designator.

GXX-YYY

Discipline designators are shown in Table 1. See Section 3.2.1.2.

Level 2: Structure/Area Designator

The second level is two numerical characters for a structure or area designation. General, Demolition, Sitework, and Underground utilities shall always have the same area number. All other structures and areas will be assigned per project. Structure/Area designators are shown in Table 2.

GXX-YYY

Level 3: Drawing Type Designators

Drawing Type designators are shown in Table 5.

GXX-YYY

Table 5: Drawing Type Designators

0## General (symbols legend, notes, etc.)

1## Plans (horizontal views and combination Plan & Profile)

2## Elevations and Profiles (vertical views)

3## Sections (sectional views, wall sections)

4## Large-Scale Views (Scaled up reproductions of plans, elevations, or sections that are not details)

5## Details

6## Schedules and Diagrams

7## User Defined (for types that do not fall in other categories, including typical details)

8## User Defined (for types that do not fall in other categories)

9## 3D Representations

## = sequential drawing order

Version 0.0

File Creation and Setup Once the project Site and Folder structures have been created, model and drawing files can be setup following the guidelines in this section.

4.1 AutoCAD and Civil 3D Files

The first step in developing new model and drawing files in AutoCAD and Civil 3D is to create the new files using the standard discipline specific template files provided by GLWA (.dwt files). For drawing files, only one drawing per file shall be created. Once these files have been created the steps below should be taken to further set the file up for use.

Coordinates

The coordinate system should be set up in the model files with the survey provided for the project. Drawings shall be in the coordinate system indicated on the site survey, with units of feet. Typically, coordinates shall be in the appropriate state plan coordinate system. Note that site specific coordinate systems may also be utilized. If a site-specific coordinate system is utilized, ensure proper documentation is provided on plan drawings. When no coordinate system is pre-defined, the horizontal coordinate system shall be NAD 1983 HARN State Plane

Michigan, South FIPS 2113, International Feet coordinate system. The vertical datum shall be City of Detroit

Vertical Datum for all Facilities projects and sewer linear projects, and NAVD 88 for all transmission main projects, unless otherwise directed by GLWA. Based on this guidance, the user shall verify preferred datum with

GLWA Project Manager.

The site survey file provided shall not have objects moved, rotated, or otherwise have locations manipulated without consulting with the surveyor. When this file is referenced into drawings, it shall be inserted at world coordinates, at a location of 0,0,0, and no rotation. Users may need to set up a UCS as necessary for the production of plan views. It may be necessary to reset the UCS to the world coordinate system (command UCS, prompt “World”) prior to referencing files in. All site files shall also be referenced in the same way.

All projects shall include information on coordinate system and datum used (including whether US Survey Feet or

International Feet was utilized), as well as any site benchmarks within the work area. For site elevations, indicate the datum utilized within the project set.

Referencing Files

AutoCAD supports External Reference files using the “XREF” command. It permits a user to “refer” to and use a model file created by another discipline. All external reference shall be kept in the project “Xrefs” folder on BIM

360.

Xrefs shall be inserted into files as shown below as an overlay with a relative path type. This will reference only the file being requested and exclude any “nested” reference files within the file being referenced. Xref layering can be found per discipline in Appendix C – Layer Descriptions.

Version 0.0

Title block

The standard GLWA 22”x34” title block shall be used. As drawing files are created, the project title block shall be referenced in AutoCAD Paper Space at a scale factor of 1:1 and an insertion point of 0,0,0. The title block shall be placed on the G-ANNO-TTLB layer.

Once the title block is attached, the title block attribute file shall be inserted as a block into the drawing on the G-

ANNO-TTLB layer at 0,0,0.

4.2 Revit Files

The first step in developing new model files for Revit is to create the new files using the standard discipline specific template files provided by GLWA (.rte files). For Revit, drawings are contained within the model files.

Once these files have been created the steps below should be taken to further set the files up for use.

Collaboration

Model files must be collaborated in BIM 360 Document Management before any work is started in the file. Once the file is created locally and named appropriately, navigate to File Save as Cloud Model. Users will be prompted to select a project and folder location within BIM 360 to save the model.

Version 0.0

Coordinates

The coordinate system used for design shall match that used by the surveyor for data collection, these coordinates shall not be moved, rotated, or translated. If no survey is used, State Plane Coordinates shall be established.

The coordinate system should be established by linking the survey file into the general model only. The coordinates will be acquired from the survey within the general model. Once the coordinate system is in place in the general model, the general model is then linked into all other disciplines where the coordinates can be acquired from the general model. The coordinate system shall be developed before modeling starts within the models.

Once the coordinate system is established, the project basepoint should be set at the lower left corner of each structure in the project. The project basepoint will be the same for every discipline model of the same structure.

This should also be set up before modeling begins.

Version 0.0

Linked Models

Revit supports external files through linking. It permits a user to link in a file created by another discipline within the same project site on BIM 360. A specific workset for links shall be created for linked files to reside on.

Models shall be set up on a shared coordinate system and should be linked using “Auto – By Shared

Coordinates”. Linked files should not be moved once inserted to the correct position. If there is a discrepancy in the coordinates between models, the user shall be responsible for resolving.

Use “Overlay” for refence type when linking files. This will load only the model being requested and exclude any nested model files within the file being linked.

Title Block

The GLWA Revit title block will be loaded into the models as part of the templates. Title block attributes are built into the project border family using parameters. Once a drawing is created in Revit with this family, the parameters can be filled out. User shall be responsible to add additional project-specific parameters if needed.

Version 0.0

Drafting and Modeling Standards

5.1 Drawing Layout

The layout of individual elements on a plotted drawing must follow a left-to-right, top-to-bottom convention. All plans, profiles, and sections shall be to scale (1:1 in Model Space). When possible, details shall be to scale as well, if not to scale then label as Not to Scale.

Plans

Plans shall be in the upper left corner of the drawing. Similar plans should be in the same location across disciplines. A guide grid will be loaded into the template and a grid location should be selected as an insertion point for a specific corner or column line intersection of the facility.

Viewports

Viewports shall be set up in Paper Space on the “G-Anno-Std-Nplt” layer at the desired scale and then locked.

Section and Detail Sequencing

Multiple sections or details that are contained on a drawing shall be sequenced in order of placement. Sections shall always be numbered, and details shall be lettered unless client requirements dictate. The sequence shall always begin again for each drawing added. For example, more than one Section 1 or Detail A can exist for a given structure, but the drawing number in the bottom half of the bubble will locate the section/detail intended.

Scales

All plans, sections, details, etc., shall be drawn full scale (1:1). The scale of each plan, section, detail, table, etc., to be placed on the final drawing will be controlled creating and setting the viewport to the required scale.

Scale Guide – (these are general guidelines only, there may be exceptions)

Plans Sections 1/8”, 1/4”, 3/8”, 3/16”, 3/32”

Building Elevations - 1/8”, 1/4”, 3/8”, 3/16”, 3/32”

Building Sections - 1/8”, 1/4”, 3/8”, 3/16”, 3/32”

Full wall Sections - 3/8”, 3/16”, 3/32”

Mechanical Sections - 3/8”, 3/16”, 3/32”

Details - 3/8”, 3/4”, 1-1/2”, and 3”

Site plans - 1”=10’, 1”=20’, 1”=30’, 1”=40’ and 1”=100’

Version 0.0

Units

Drawing units within AutoCAD will vary between decimal and architectural, depending upon the type of drawing.

All civil work including yard piping, site plans, and grading plans must use AutoCAD’s decimal units, with the drawing unit understood as one foot for imperial. All other discipline drawings shall use Architectural units’ inches.

Project units within Revit models shall be set to decimal feet rounding to 2 decimal places.

General Notes, Schedule, and Legends

General notes are notes that apply to the entire drawing. These shall be placed on the right side of the drawing.

Schedules, indexes, and legends shall follow the same convention.

Key Notes

Key notes are notes that provide information, instructions, or explanations to specific components of a drawing.

These notes should be used whenever they can save time in lettering and prevent a drawing from becoming so cluttered that it becomes difficult to follow. Standard keynotes should use 3/8” diameter circle with standard 0.1”

Arial text centered in the circle. The leader should extend from the right or left quadrant point of the circle and be terminated with an arrowhead.

Plan and Profiles

When necessary, include profiles on the drawings. Profiles may be set up either as plan and profile drawings, or just as drawings of profiles with plan views on other drawings. For plan and profile drawings, the plan view shall be on the top half of the drawings, with the profile below. The profile shall line up with the plan view to the best extend possible. Plan drawings with alignment stationing and Plan and Profiles drawings shall read left to right with station numbers increasing.

Profile views shall be exaggerated, to better show small variations in elevations. Allowable horizontal and vertical scales are as follows:

Horizontal Scale Allowable vertical scales

1” = 5’ 1” = 1’ (5:1)

1” = 5’ (1:1)

1” = 10’ 1” = 2’ (5:1)

1” = 5’ (2:1)

1” = 20’ 1” = 4’ (5:1)

1”= 5’ (4:1)

1” = 10’ (2:1)

1” = 30’ 1” = 5’ (6:1)

Version 0.0

1” = 10’ (3:1)

1” = 40’ 1” = 10’ (4:1)

1” = 20’ (2:1)

Utilize a vertical scale that best represents the depths for the project. Scales not shown are not typically used; if such a scale is to be used, ensure that the scale factor is easy to work with.

5.2 Layer Naming Conventions

GLWA layering convention is based upon AIA CAD Layer Guidelines (CLG) from National CAD Standard V6.

Layers for each discipline can be found in Appendix C – Layer Descriptions and are included in the discipline template files. If additional layers are needed, please follow the layering convention set forth in this section.

Descriptions shall be included when any new layer is created.

Level 1: Discipline Designator

Level 1 is a single character discipline designator. Discipline designators can be found in Table 1. For example, A is architectural.

A-WALL-FULL-TEXT-E

Level 2: Major Group

Level 2 is a four-character designation that identifies major building systems. For example, the major group below would be for walls.

A-WALL-FULL-TEXT-E

Level 3: Minor Group

Level 3 is a four-character designation that further defines the major group. For example, FULL below for full height walls.

A-WALL-FULL-TEXT-E

Level 4: Modifier

Level 4 is a four-character designation that breaks down the major and minor groups further. This should be used minimally only if required. When this is not used these characters are omitted from the layer name.

Version 0.0

A-WALL-FULL-TEXT-E

Level 5: Status or Phase

Level 5 is a single character designation that indicates the status or phase of construction. See Table 6 below for phase characters.

A-WALL-FULL-TEXT-E

Table 6: Phase Characters

A Abandoned N New Work

D Existing to Demolish T Temporary Work

E Existing to Remain X Not in Contract

F Future Work 1-9 Phase Numbers

M Items to be Moved

5.3 Text Styles

All text shall be annotative and created within AutoCAD Model Space or within the Revit Viewport.

Standard Text Settings

The GLWA standard font sizes and styles will be loaded in the AutoCAD and Revit template files.

The three primary text styles used are all based on the Arial font because this is a common font between Revit and AutoCAD.

GLWA_HEADINGS: full size plotted will be 0.25” high x 1.0 width o To be used for title drawing, notes section headers, and view title text height.

GLWA_SUBHEADINGS: full size plotted will be .15” high x 1.0 width o To be used for index, legends, room names and schedules (headers only).

GLWA_NOTES: full size plotted will be 0.10” high x 1.0 width.

o To be used for dimensions, callouts, tags, and notes on drawings.

GLWA_NOTES_E: Italicized full size plotted will be 0.10” high x 1.0 width.

o To be used for existing dimensions, callouts, and notes on drawings.

All annotation text shall be placed in upper case. Text shall be placed to facilitate reading from the bottom or the right-hand edge of the drawing. Text shall be placed horizontal to the title block. Special care shall be taken to place text uniformly. Annotation within the drawing working area shall use left justified placement.

Version 0.0

All text shall be aligned with a zero rotation and parallel to the top of the drawing. No upside-down text is permitted. All text should be kept outside the object being annotated as much as possible

Leaders

Linear Leaders will be used on the project. Leader lines shall be placed from the left side of the first line of a text block, or from the right side of the first line of a text block.

Leader lines shall not cross dimension lines. Leader lines may cross extension lines if necessary but avoid if possible. Leader lines shall be as short as possible. Where leader lines cross dimension lines, use a separator or gap in the dimension line. Standard leader lines shall begin adjacent to text block and shall always be terminated with a filled 20-degree arrowhead drawn 1/8” long.

5.4 Dimensions

All dimensions shall be annotative and created within AutoCAD Model Space or within the Revit Viewport.

Dimensioning shall always be associative and linked to geometry in the model rather than an arbitrary point or detail line. Dimensions shall not be overwritten to read another dimension that is not accurate. Dimensions shall not be hand drafted with lines or exploded.

Dimension Location

Dimensions should be located outside of the view or out of line with objects wherever possible. Dimensions should be placed at the top or right side of the view wherever possible. Dimensions should be in continuous strings wherever possible. Dimensions should be offset 3/8” from each other to avoid overlapping.

Opening location dimensions and opening sizes shall be shown in the normal view of the opening whenever possible. Extension lines shall begin 3/32" from the outline of the object being dimensioned and shall extend not more than 1/8" beyond the farthest dimension line.

Dimensioning shall not be shown from hidden edges. Use a cut-away view if necessary; however, if another view would cause extensive extra work to show little information, dimensioning to hidden edges (dashed lines) are permitted. Dimensions shall be placed directly above the dimension line, midway between the tick marks. Where space does not permit, the dimensions may be placed outside the extension lines on a continuation of the dimension line, above the line, or above the line, and a leader shall be used.

Dimension Text

Dimension text should match the drawing text size standards (See section 5.3.1). Dimension text should be placed adjacent to the midpoint on top of the dimension line wherever possible.

Version 0.0

Dimensioning Base Lines

Dimensions shall be given from a base line or a finished surface that can be readily determined on site. Center line dimensioning is generally used for structural column grids, or for piping and equipment layout showing openings, but other applications may apply.

Arrowheads and Leaders

Dimension lines shall be terminated by tick marks, drawn 1/8" long and 45 degrees from the dimension line.

Diameters, Radii, and Angles

A dimension indicating a diameter shall have the abbreviation DIA or the diameter symbol (Ø) placed after the dimension. Holes that are not specified DRILL, BORE, etc., shall have the term "HOLE" after the hole size, e.g., 1/4" DIA HOLE (units are different between architectural and civil sheets). The dimension of a radius shall be placed above the radius line and between the arrowhead and the center of the radius whenever possible. The number shall always be followed by the letter R without a period. Angular dimensions shall be placed within the angle and be right reading rather than aligned with the angle. Arcs must be used rather than dimension lines and the arc broken to place the text whenever possible.

Dimension Units

Dimensions shall be created using Imperial units in a feet-and-inches format for all dimensions greater than 1 foot, e.g., 3'-6". Dimensions less than 1 foot shall be in inches only, e.g., 8". Precision shall not be less than

1/16”. Dimension styles will be set up to read as feet and fractional inches suppressing 0 feet. The exception to this shall be site/civil dimensions, which may be in decimal feet, with a precision of 0.00, e.g. 8.75’. Angular units shall be set with zero degrees always to the right.

5.5 Line Types

Typical line types are included within each discipline template file.

AutoCAD and Civil 3D Lines

All line types used in AutoCAD drawings must conform to the following standard. All line types will be based on the default AutoCAD line types from the file ACAD.LIN. Since this severely restricts the available patterns, this file may be extended in a logical manner. By adding a number to the line type name, it will be possible to create many line styles. If a number follows the line type name, the spacing of the line is the result of dividing the basic pattern by the number listed. If the name begins with a number and a hyphen, the pattern is the result of multiplying the basic pattern by the number.

For example, a line type named PHANTOM3 will have the same pattern as the AutoCAD’s phantom line type, but the dash and space lengths are one-third the distance. Similarly, 5DOT will have five times the spacing of the pattern DOT.

Version 0.0

An LTSCALE of 0.5 shall be used when plotting from Paper Space.

PSLTSCALE variable should be set to 1 at all times to ensure that line types appear consistent in Paper Space view ports having different scales.

Linetype and line weight shall be controlled by the layer the object is placed on (bylayer). Where necessary for illustration clarity, blocks may need to be edited by the User.

Custom linetypes shall be controlled by individual disciplines or client standards.

Revit Lines

Standard Revit settings for all line types, line weights and scaling shall be used. Future custom line types may be provided by GLWA within discipline templates.

Match Lines

Match Lines represent a clear and distinguishing delineation between viewports and or drawings. The Match Line is critical in showing the break in design information. When using a matchline, the matchline shall represent the end or edge of drawing area. Do not extend object lines past the matchline.

For civil drawings, matchlines shall be perpendicular to the design alignment at the station referenced as the matchline point. Matchlines shall be placed at the nearest full or half station point (Ex. MATCHLINE STA. 20+50).

Matchlines placed at quarter and three-quarter station points are acceptable.

Matchlines shall have a hidden a line type. Matchline text should be 0.15 height. See Figure 1 below.

Figure 1: Matchline Example

Version 0.0

5.6 Phasing

AutoCAD and Civil 3D

New Conditions

All new items must be placed on new layers (see section 5.2). All text for existing information shall be based on

GLWA standard text styles (see section 5.3). Avoid the repetitive use of the word "NEW” when adding notes to drawings.

Existing Conditions

All existing items must be placed on existing layers (see section 5.2) and shown on drawings, so they are easily distinguished from new work. All text for existing information shall be based GLWA standard text styles (see section 5.3). Avoid the repetitive use of the word "EXISTING" when adding notes to drawings. Refer to Section

2.2.1 when working with existing drawings that may not currently follow the GLWA Guideline.

Future Conditions

All future items must be placed on future layers (see section 5.2). Future information should also be drawn in a very light line with a phantom line style. Items designated as "FUTURE" should be clearly indicated and should not be confused with either existing conditions or new work. All text for future information shall be based on

GLWA standard text styles for (see section 5.3).

Revit

Overview

Two standard phases are included in each template file, Existing and New Construction. If the project is a multiple phase project, the user shall determine advanced phasing instructions.

Existing Conditions

All existing elements should be created in the existing phase.

Existing elements must be shown on a drawing in way so it may be easily distinguished from the new work. All existing information shall be depicted as halftone. Halftone settings should be set at a darkness level of 65.

All text for existing information shall be based on Arial text (Italicized), 0.1” height, a style called “Arial_E” is available for this purpose. Avoid the repetitive use of the word "EXISTING".

Version 0.0

New Construction

All new elements should be created in the New Construction phase.

Demolished Conditions

All elements that are to be demolished should be created in the Existing phase and Demolished in the New

Construction phase. Existing elements to be demolished shall always be phased this way and shall never be deleted out a model.

Temporary Conditions

All temporary elements should be created and demolished in the same phase. Temporary work will show as hidden lines.

Future Conditions

All future work should be placed on its own “Future” workset. Future information should also be drawn in a very light line with a phantom linestyle. Items designated as "FUTURE" should be clearly indicated and should not be confused with either existing conditions or new work. All text for future information shall be based on Arial text

(Italicized), 0.1” height, a style called “Arial_F” is available for this purpose.

5.7 Civil 3D Standards

Coordinate Labeling

All coordinates shown on the drawings shall be placed utilizing Civil 3D points. When creating points, ensure that both the elevation and description are properly filled out. Descriptions shall be concise and be consistent throughout the drawing set. All points shall have X and Y coordinates labeled, and a description; it us up to the designer whether the elevation needs to be included with the coordinate labels.

It is preferred that points and coordinate labels are placed in the individual drawings where the coordinates are labeled. However, for particularly large projects with points scattered among multiple drawings, a separate

Version 0.0 reference file with points and coordinate labels may be created, in order to aid in coordinate point numbers amongst drawings.

Depending on the number of points to be labeled, coordinates shall be shown in one of two ways:

Under 10 points per drawing:

o Coordinates shall be labeled in plan view. Labels styles have been provided to toggle the elevation and/or description of the point, in the format “GLWA Coordinates – Elevation, Description.

More than 10 points per drawing:

o Coordinates shall have a label showing the point number in plan view, with the label style “GLWA

Point Number”. Point numbers shall follow a logical progression throughout all site drawings;

ensure coordinates on different drawings do not have the same number. Note that Civil 3D automatically assigns point numbers when creating points, so points may need to be renumbered.

o In addition, a point table shall be created and shown along with the relevant plan view, utilizing either of the point table styles “GLWA Point Table – No Elev:” and “GLWA Point Table – Elev”.

Each table shall only show the points called out in the plan view and shall be generated utilizing point groups. Creating point groups give the designer better control over the length of each table when multiple tables on a drawing is necessary, in particular for when a reference file is created.

Digital Terrain Models (Surfaces)

For all projects with a civil component, both existing and proposed elevations shall be modeled within Civil 3D utilizing surfaces.

Existing surfaces are typically to be provided by the surveyor. When the surveyor does not provide an existing surface, care shall be taken in creating an existing surface, ensuring that the contours produced during this process adequately reflect the existing conditions of the site, particularly within the confines of steep slopes, swales, streams, etc. Existing footprint of buried structures shall also be identified.

Where necessary, a proposed surface shall be generated showing all proposed grading changes. For larger or more complex sites, it may be helpful and necessary to create multiple proposed surfaces based on the site size or features. In this case, a final display surface(s) shall be created (see naming conventions below) that will be the surface that is displayed and labeled on the site plans. This surface can be created by utilizing the surface edit

“Paste Surface”. For larger sites, it may make sense to have multiple display surfaces, however in no instance shall such surfaces overlap in area.

Surface naming Convention

Existing surfaces shall follow the naming convention FFFFF-EX-D, where “FFFFF” is the facility code (see appendix A) for the project, and “D” is an optional description to be used as necessary (i.e., multiple existing surfaces).

Version 0.0

Proposed surfaces shall follow the naming convention FFFFF-PR-D, where “FFFFF” is the facility code (see appendix A) for the project, and “D” is a description. When multiple proposed surfaces are necessary and a master surface for an area is necessary, the description shall be in the format “MASTER-Description”. All descriptions shall be created so as to help easily identify what an individual surface contains, what area of the site it covers, etc.

Surface display and labeling

Surface display styles for both existing and proposed surfaces have been setup in the civil template as follows:

Existing: GLWA-Existing-1’ Contours, GLWA-Existing-2’ Contours

Proposed: GLWA-Proposed-1’ Contours, GLWA-Proposed-2’ Contours

For most projects, the 1’ contour interval style shall be utilized. However, the 2’ contour interval is provided for projects where rapid changes in elevation occur where 1’ contour intervals would become distracting.

When necessary to work on a surface and show points or triangles, a style “GLWA-Working” has been provided.

This will turn on the border, triangles, and points within a surface on a layer that will not plot.

Contour labels shall be created utilizing the style “GLWA Contour Existing” or “GLWA Contour Proposed” for both major and minor contours. Contours shall be cleanly labeled throughout the plan views shown. In general, all contours shall be labeled in every plan view in multiple locations, to make identification easy. In areas with steep slopes where contour lines come close together, it is acceptable to only label the major (5’ or 10’ interval) contours, provided contours at both the top and toe of the slope are also labeled.

Where necessary, provide spot elevations through the drawing. The following basic spot elevation styles have been provided in the template:

GLWA-Existing – For existing spot elevations

GLWA-Proposed – For proposed spot elevations

GLWA-Existing-Curb – Contains both top and bottom of curb elevations. Place at bottom of curb.

GLWA-Proposed-Curb – Contains both top and bottom of curb elevations. Place at bottom of curb

When necessary, create additional spot elevation styles as necessary to provide additional label within the spot elevation (description, other elevations, etc.). When creating new styles, utilize a name that describes the function of the new spot elevation style. Spot elevations styles shall be created based of the GLWA standard styles and shall maintain the same general display style (color, font, leader, etc.), as well as the same level of precision.

Alignment Baseline Stationing

All pipeline stations shall be labeled to the tenth of a foot (Ex, 1+92.5) the pipeline alignment shall be developed with a continuous one-hundred-foot format. In addition, ticks shall occur at even divisions along the alignment, between stations (25’ or 50’ is preferred but depends on scale of drawing). This station format provides the means of referencing pertinent points of construction and proposed appurtenances along with providing a reference between plan and profile views. Styles for the alignment (GLWA-Alignment), station labels (GLWA-MAJR-

STATION) and minor labels (GLWA-MINR-TICK) have been provided in the Civil 3D Template.

Version 0.0

When assigning stationing to an alignment, the first priority is to the best extent possible any existing historical source of stationing. Where historical data is likely to be present (working alongside an existing roadway or pipeline, etc.), work with the GLWA PM to determine what stationing has been used in past projects. When no such stationing already existing, new station shall be implemented, starting with station 10+00. When multiple alignments with separate stationing are present, consider incrementing the stationing for each alignment by 10 or

100 as appropriate. For example, pipeline 1 would start at station 10+00 or 100+00, pipeline would start at 20+00 or 200+00, etc. When assigning new stationing, the goal is to not have two separate alignments contain the same station number.

When pipelines are aligned either with a roadway, or with a group of other pipelines, one alignment shall be the primary alignment. The primary alignment shall be, in order of preference, the roadway centerline, the largest diameter pipe within the pipe group, or the middle pipe. Where complex pipe routing occurs, efforts shall be made to minimize the number of sources of stationing that occur along each individual pipeline.

When common stationing occurs, all pipe stations shall be called out with offsets. Offsets shall be to the nearest tenth of a foot and shall be labeled either L (Left) or R (right), based on facing direction the stationing increases.

Cross and Parallel Underground Utilities

All underground utilities (including but not limited to process piping, natural gas, electric, telecom, water, storm and sanitary sewers, etc.) shall be shown and labeled with the correct size and elevation profiles. Additionally, all parallel underground utilities within 10 feet of the profile shall be shown. Pipes shall be modeled as discussed below in the pipeline modeling section.

Facility and Yard Piping Connection Point Location

All yard piping connections shall be coordinated with each facility to meet at five feet outside the building unless project specifics require otherwise. The X, Y, and Z location of each connection point shall be coordinated so the point is clearly defined and coordinated with all affected disciplines. All pressure pipe connections points shall match pipe centerline elevation. All gravity pipes shall match pipe invert elevation.

Pipeline Labeling

Design slopes for all water and wastewater lines shall be labeled to the nearest hundredth of a percent (Ex.

SLOPE=2.25%…