Exhibit B-2 CAD Standards and Drafting Guide.pdf
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- Solicitation number
- RFP # 25253003
- Issued by
- Juneau City and Borough, Alaska
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This document is the Alaska Department of Transportation & Public Facilities' (DOT&PF) CAD Standards and Drafting Guide (CSDG). The CSDG formalizes the establishment of computer-aided drafting (CAD) standards for DOT projects to facilitate integration, ensure consistent data quality, improve workflow, and promote efficient data transfer within the department and between state, federal and local agencies, consultants, and the public. The guide is organized by discipline, with each chapter regularly reviewed and updated. It covers drawing development, templates, layering, color/linetype (CTB) files, survey standards, highway design, and other content requirements for the various plan set series (A, B, C, etc.). The guide is intended to provide uniform procedures and standards for organizations performing CAD-related services for the Alaska DOT&PF.
The guide establishes standards for format, content, and structure of drawings developed for roadway projects to ensure consistency in drawing standards, symbol usage, layer naming/properties, drawing naming/sequencing, and electronic deliverables. It specifies requirements for text styles, dimensions, linetypes, external references, model vs. paper space, and other drafting elements. The layering scheme is based on the National CAD Standards with some modifications by DOT&PF. CTB files are provided to control plotted lineweights by color. The guide also covers requirements for survey control diagrams, plan & profile sheets, details, traffic sheets, and other components of the roadway plan set.
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DEPARTMENT OF TRANSPORTATION
AND
PUBLIC FACILITIES
STATEWIDE
CAD STANDARDS &
DRAFTING GUIDE
(CSDG)
Revised October 2015
TABLE OF CONTENTS
Chapter 1: Overview ................................................................................................... Revised Ocotber 2015
Chapter 2: Drafting Standards ..................................................................................... Revised October 2015
Chapter 3: Survey (Roadway) ...................................................................................... Revised October 2015
Chapter 4: Right‐of‐Way ............................................................................................. Revised October 2015
Chapter 5: Highway Design ......................................................................................... Revised Ocotber 2015
Appendix A – H Sheet Order
Chapter 6: Aviation ......................................................................................................................... Reserved
Chapter 6: Environmental ............................................................................................................... Reserved
Chapter 7: Utilities .......................................................................................................................... Reserved
Appendix A – Northern and Southcoast Region CTB File Information
Appendix B – Central Region CTB File Information
Appendix C –NCS Layer Name Field Codes
Appendix D – Northern and Southcoast Region Layering Guide
Chapter 1: Overview
CHAPTER 1: OVERVIEW
Chapter 1: Overview Revised October 2015 P a g e | 1.2 of 1.4
TABLE OF CONTENTS
SECTION 1. Overview
1.1 Organization and Updates
1.2 Resource Locations
1.3 Intended Use
SECTION 1 – INTRODUCTION
Revised October 2015 P a g e | 1.3 of 1.4
SECTION 1. OVERVIEW
The Alaska Department of Transportation & Public Facilities’ CAD Standards and Drafting Guide (CSDG) formalizes the establishment of computer‐aided drafting (CAD) standards that facilitate integration, ensure consistent data quality, improve work flow, and promote efficient data transfer within the department and between state, federal and local agencies, consultants, and the public. For project competition and continuity, the CSDG will need to be used for all DOT projects and functional groups.
1.1 Organization and Updates
This guide is organized by discipline. Each of the chapters will be reviewed and updated regularly.
Although each section is independent, all sections substantially conform to each other. Follow the Department’s guidelines for naming and organizing CAD files/sheets. For exceptions please reference the applicable chapter of this guide.
Updating this guide is an ongoing process and revisions will be made periodically. Please check frequently to ensure that you are using the most current version of this document as well as the associated appendices. Questions, comments, and recommendations are always welcome and may be addressed to:
Central Region
Kristen Keifer Chris Post Phone: (907) 269‐0597 Phone: (907) 269‐0585 Email: Kristen.Keifer @alaska.gov Email: Christopher.Post @alaska.gov
Northern Region
Judy Biggane Steve Powers Phone: (907) 451‐2290 Phone: (907) 451‐5360 Email: judy.biggane@alaska.gov Email: steve.powers@alaska.gov
Southcoast Region
Nate Geary Jonathan Weaver Phone: (907) 465‐3772 Phone: (907) 465‐4442 Email: nate.geary@alaska.gov Email: jonathan.weaver@alaska.gov
SECTION 1 – INTRODUCTION
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1.2 Resource Locations
Central Region:
For in‐house personnel see the following folder tree:
L:\Engineering\AutoCAD
For Consultants the site is:
http://www.dot.state.ak.us/creg/dot‐cadastral/Central‐Region‐DOT‐CAD‐Standards/Highway
Northern and Southcoast Regions:
Contact the Project Manager for a copy of the most current files and documentation.
1.3 Intended Use
The information presented in this guide assumes that the user has a solid understanding of the common commands and features of AutoCAD software. Please defer to the Project Manager (PM) or the Consultant Coordinator to request clarifications on this guide or to receive approval to deviate from it.
This guide is not a text book and does not exempt the professional from performing responsible surveying and/or engineering. It is intended to provide uniform procedures and standards for organizations that perform CAD related services for the Alaska DOT&PF. The professional shall have final responsibility for the accuracy of all input and output of computer based applications.
| Chapter | 2: | Drawing | Development, |
| Templates, | Layering, | & | CTB |
CHAPTER 2: DRAWING DEVELOPMENT, TEMPLATES, LAYERING, & CTB
Chapter 2: Drafting Standards Revised July 2016 P a g e | 2.i of 2.10
TABLE OF CONTENTS
SECTION 1. INTRODUCTION
SECTION 2. DRAWING DEVELOPMENT
2.1 Basic Information
2.2 Drawing Templates & Sheet Templates
2.3 Model Space & Paper Space Guidance
2.4 Scale & Units
2.5 Callouts & Dimension Settings
2.6 Linework, Linetypes, & Lineweights
2.7 External References & Data References
2.8 Font, Text Styles, & Size
2.9 Tables, Titles, Notes, & Matchlines
2.10 Blocks
SECTION 3. LAYERING
3.1 Highway Design Layer Layers & Formatting
3.2 General Layers & Formatting
3.2.1 Discipline Code:
3.2.2 Major Group & Minor Group:
SECTION 4. CTB FILE INFORMATION
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SECTION 1. INTRODUCTION
The function of an engineering drawing is to illustrate and describe a design project in sufficient detail and clarity to ensure correct interpretation by contractors and construction personnel. To achieve this purpose, a drawing must be prepared according to practices that are universally recognized. This guide establishes the standards for format, content, and structure of drawings developed for roadway projects for the Alaska DOT&PF. The establishment of CAD data and drafting standards ensures consistency in:
Drawing standards & symbol usage
Layer naming & properties
Drawing naming & sequencing
Electronic deliverables
The creation of design drawings is merely the initial process in the design’s life span. These drawings will be shared and referenced by many users and must adhere to a well‐defined standard to alleviate potential confusion and maximize efficiency. To accomplish this, all persons involved in the production of plans for the Alaska DOT&PF should use this guide as a basis for their development.
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SECTION 2. DRAWING DEVELOPMENT
The cornerstone of all good drafting practice is clarity and precision. The Project Manager, Project Engineer, Designer, and Drafter must decide what is important and ensure that the drawings communicate the information to the intended audience as clearly as possible.
2.1 Basic Information
CAD files are considered models or real maps. Files shall not be broken into sheets in model space but drawn as contiguous layouts, maps, models, etc. Each section creates file information with specific levels and symbols allowing files to be added to or “stacked” as reference files to compile full engineering maps and models.
CAD files are considered working engineering drawings with the appropriate accuracy.
2.2 Drawing Templates & Sheet Templates
All civil base drawings shall be setup using the current appropriate dwt file. “Full sized” sheet format for all plans will be 22”x34” in paper space. “Half sized” format will be 11”x17”. Plain bond paper will be used for “Half sized” final drawing submittals unless otherwise specified. Use the standard borders and title sheets for all drawings. Each DOT Region has drawings, templates, and other files available for use by design squads and consultants.
Title and border template sheets are inserted into Paper space at 0,0,0 and attribute information is entered in full. Do not explode title and border sheet xref or blocks (xref of border is preferred).
2.3 Model Space & Paper Space Guidance
Drawing models shall be drawn full scale in model space. Additional items that define the model or add model data such as details, dimensions, elevations, names, descriptive text, or sections are regularly drawn in model space. Secondary drawing elements such as title blocks, sheet borders, notes, schedules, titles, and legends may be created in paper space. Following are general lists of items that belong in model or paper space in AutoCAD:
Model:
Plans, sections, elevations, and details
Any physical object located on the ground
Text that is used to identify a line or a specific object (typically any text with a leader is drawn in model space.)
Hatch patterns
Dimensions
Detail call outs and section cuts
Object symbols
Diagrams
Station and/or offset references
Elevation references
Northing and Easting references
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Paper:
Sheet borders, title blocks and any add‐ons within the title blocks
Viewports
General notes and sheet notes
Schedules, tables (that are not referencing a 3D element like pipes), and legends
Any sheet layout information
Titles and accompanying text
Essentially, model space is where you will do the design work and most of the drafting. Paper space is used to arrange, annotate, and plot various views of the model. Title blocks, general notes, sheet notes and entities that are not attached to articles that represent “real objects on the ground” are placed in paper space. “Real” entities and objects referring to them are placed in model space.
Note: Survey information referenced in design drawings shall not be moved or rotated from the original coordinates used in the survey drawing. When copying model space information between drawings, verify the UCS coordinates in both drawings are set to “World” prior to executing the copy‐paste commands.
2.4 Scale & Units
CAD drawing models shall be drafted at full scale in engineering units such that one drawing unit equals one foot. All plans should be in imperial units.
2.5 Callouts & Dimension Settings
All alignment and profile callouts should reference the Civil3D objects. Do not explode or overwrite callouts; all callouts shall remain associative, if possible.
Annotative dimensions and references should be used when available. Care should be taken to ensure that the referenced object or element is correctly identified. Do not explode or overwrite dimensions;
all dimensions shall remain associative, if possible.
2.6 Linework, Linetypes, & Lineweights
All line work shall be black and opaque, except for as‐built line work which shall be done in red. CAD entity linetypes and colors shall be set “BYLAYER” with only rare exceptions. Linetype scale shall be set to plot correctly at full size. The “linescale” feature in the plot routine can then be used to plot accordingly.
The Legend Sheet shows custom linetypes and standard symbols.
Best practices dictate that:
All linetypes and lineweights shall be set to “BYLAYER”
Plotted lineweights are controlled by color and the CTB file
“Halftoning” or “screening” of lines or entities should be done only in special circumstances
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2.7 External References & Data References
All externally referenced source drawings (XREFs) shall be inserted on layer C‐ANNO‐REFR per the Layering Guide, and the layer should remain locked to avoid unintentionally moving the reference drawing from its original coordinates.
Data references should be used when possible to ensure accurate, up‐to‐date data is used in the design.
Note: Personnel working on a project should be continually informed of changes to referenced data. A design log or journal in the project folder and logical data naming should be retained to ensure designers use the correct data.
2.8 Font, Text Styles, & Size
All contract document text shall be UPPERCASE. Only three fonts are approved for use; Romans, RomanSM (Central Region only)and Romand. The exception to the allowed text is the title block provided by each DOT Region, fonts used for signage, exceptions per section dictated in the guide, and tables where text alignment provides additional clarity to the planset. Follow the provided regional templates for font, text style, and size.
Central Region Font Sizes
Style Title Font Size (1:1) Remarks
RS200 Title Text Romans 0.200” Detail Titles, Match Lines
RS140 Sub‐Title Romans 0.140” Table Column Headings, Detail Subtitles, Note Titles
RS120 Note Text Romans 0.120” All General Text, & Dimensions
RM120 Table Text Romansm 0.120” Table Text
RS100 Note Text Romans 0.100” Only when necessary (Parcel text, Dimensions, Grading plans, striping calouts)
Note: Do not use oblique text or a width factor; unless a special case dictates their use. (Water labeling text should be at a 35 degree oblique angle.)
Southcoast and Northern Region Font Sizes
Style Title Font Plot Size (1:1) Remarks
RD250 Title Text Romand 0.250” Table Titles
RD200 Title Text Romand 0.200” Sheet Titles, Detail Titles, Match Lines
RD150 Sub‐Title Romand 0.150” Table Column Headings, Detail Subtitles, Note Titles
RS125
Note & Dimension Text
Romans 0.125” All General Text, Dimensions & Table Text
*There are two text styles used in all drawings: RS and RD. The number shown after RS or RD is used to denote text height (this is optional). Example: RD250 has a text height of 0.250”.
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2.9 Tables, Titles, Notes, & Matchlines
For alignment of tables, RomanSM should be used (Central Region only). This is a monospaced font.
Tables, titles, notes, and matchlines shall with conform to what is outlined in the legend sheet and templates provided.
2.10 Blocks
The majority of blocks needed for the planset should be provided in the drawing template of the legend sheet. However, if an additional block is needed, all entities within the block shall be created on layer 0.
Masking should be on layer 0 and the color property should be overwritten from “BYLAYER” to the appropriate masking color. Do not nest blocks.
Note: If the block is not in the template, most users will want to copy and paste entities directly from the legend sheet drawing into another drawing in order to set/load the correct layer, linetype, color, and block definitions.
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SECTION 3. LAYERING
3.1 Highway Design Layer Layers & Formatting
CAD drawings shall be prepared using the Alaska DOT&PF’s variation of the National Cad Standards (NCS) layering scheme. The layers in the templates, legend sheet, drawing files, and those outlined in this guide shall be followed.
The Alaska DOT&PF has eliminated its proprietary CAD layering standard and has adopted the NCS layering scheme with some modifications. By adopting a “common language” of data classification and organization, the need for consultants to maintain multiple layering guides to decipher layer codes is reduced.
The standards outlined in this document substantially conform to the NCS. However, DOT&PF follows its own guidelines for naming and organizing CAD files and for naming sheets. The CTB file, although not entirely NCS, uses elements for simplicity.
Whether a design is in‐house or by a consultant, all drawings will be layered in accordance with the layering standard established on the legend sheet (also known as “A3”) and the layering guide appendix.
During drawing production, if it appears that additional layers are needed, contact the Project Engineer for further direction. Any additional or project specific layers will substantially conform to NCS.
3.2 General Layers & Formatting
Only in rare cases should new layers be created that do not already exist in the Alaska DOT C3D template drawing. Project specific layers will substantially conform to NCS Standards and this guide.
This is not intended to be an all‐inclusive list; but rather a guideline. Here are some examples of acceptable formula variations, with explanations of formula variables found below:
# 1 C‐TRAF = discipline code + major group # 2 C‐TRAF‐SGNL = discipline code + major group + minor group # 3 C‐TRAF‐SGNL‐POLE= discipline code + major group + minor group + minor
3.2.1 Discipline Code:
The discipline code is a one or two‐character field with the first character being the discipline code and the second character being either a hyphen or a modifier.
Major Group Description
C Civil
*CU Civil Utilities
E Electrical (to be used by electrical consultants only)
GIS GIS enabled
V Survey
*VU Survey Utilities
*Central Region Only
3.2.2 Major Group & Minor Group:
The major group designation is a four‐character field that identifies the system, such as roads, right‐of‐ way, buildings, etc. Although most major groups are logically associated with specific discipline codes, it
Revised July 2016 P a g e | 2.8 of 2.10 is possible to combine major group codes with any of the discipline codes. For example: C‐ASPH‐EDGE or VU‐ELEC‐OVHD. See the box below, Appendix B: NCS Layer Name Field Codes, and Appendix C:
Northern and Southcoast Region Layering Guide for additional Major and Minor groups names.
Major Group Description
TRAF Traffic related layers
TRAF‐SGNL Traffic signal related layers
TRAF‐MRKG Traffic marking related layers
RWAY Right‐of‐Way related layers
RWAY‐PROP Right‐of‐Way property related layers
RWAY‐ESMT Right‐of‐Way easement related layers
SURV Survey
In practice there are cases were clarity or further identifiers may be needed. The minor group codes could be used again following another minor group entry. This is optional. Further differentiation of minor groups could be needed for estimates or different viewport scales. For example, a property line might be better segregated with V‐RWAY‐PROP‐SECT for a section line.
Note: If necessary, the minor group field may also be defined by the user, allowing additional layers to be added to accommodate special project requirements. However, this should only be done after checking to see if any of the predefined layer names in that list would meet the special project requirements.
SECTION 7 – DOT NR LAYERING GUIDE
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SECTION 4. CTB FILE INFORMATION
Plotted lineweights are controlled by color and the CTB file which maps drawing colors to line thicknesses CTB files contain color‐based plot styles, or mappings of colors to layers of objects; used to attach color and display settings to design objects. In a color dependent system, use the color parameter – either BYLAYER or BYOBJECT – of an object to control the thickness of the lines in the final printed output.
Appexdix A outlines information for the AKDOT_Fullsize.ctb file. It should be used for all construction plansets. Use a 1:2 plot scale when plotting to halfsize (11”x17”) paper.
CHAPTER 3: SURVEY (ROADWAY)
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Chapter 3: Survey (Roadway)
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TABLE OF CONTENTS
SECTION 1. Introduction
SECTION 2. Drawing Development
2.1 Standards
2.2 Scale
2.3 Content Survey Control Diagram/Survey Control Sheet
2.3.1 Data Tables
2.3.2 Control Statements
2.3.3 Notes
2.4 Content Survey Control Diagram
2.4.1 Surveyor’s Certificate
2.4.2 Title Block
2.5 Content SCS
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INTRODUCTION SECTION 1.
This chapter covers the Survey Control Diagram (SCD), the Survey Control Sheet (SCS), and the differences between the two products.
The SCD’s purpose to show horizontal and vertical control that was either found or established during the survey. The SCD will show monumentation that was found during a ROW survey if ROW mapping is not done for the project. The SCD will be recorded in the appropriate recording district.
The SCS identifies all existing horizontal and vertical survey control in relationship to the current project centerline or baseline. This differs from a SCD in that the SCD does NOT show the current project alignment. The SCS is typically NOT recorded as a Record of Survey.
The principal users of the SCS will be Land Surveyors who are performing construction stakeout work in the vicinity of the project. Near‐term users are Land Surveyors staking the project centerline after construction, replacing corners that were disturbed, DOT surveyors checking that work, and the Construction Engineer to ensure that existing monumentation does not get disturbed. The SCS has the potential to be used for many years.
Below is a breakdown of the typical SCD and SCS and what they consist of:
1. Survey Control Diagram –Contains all horizontal and vertical control found or set. Contains found ROW and property corners if no ROW Base mapping effort is planned. No project centerline shown, no station & offset tables. The diagram is recorded as a Record of Survey.
2. Survey Control Sheet (where ROW Mapping has been done) – Project centerline shown, and related to horizontal and vertical control listed in tables. ROW and property corners are only shown if they may be affected by construction activities. The SCS is used in the Department’s plan set.
3. Survey Control Sheet (where ROW Mapping has not been done) – Project centerline shown, and related to horizontal and vertical control listed in tables. ROW and property corners may also be shown in station & offset tables. The SCS is used in the Department’s plan set.
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DRAWING DEVELOPMENT SECTION 2.
2.1 Standards
In the preparation of a SCD/SCS, adherence to the DOT & PF drafting guide will be strictly enforced.
Additional drawing requirements are spelled out in the Surveying Statement of Services. Read these documents thoroughly since submittals that do not substantially conform to these criteria will be rejected.
2.2 Scale
The sheets shall be drawn at a scale to clearly show the relationship between survey control and the surrounding features. When selecting the scale, it must be remembered that all plan sets are published on 11”x17” sheets.
2.3 Content Survey Control Diagram/Survey Control Sheet
Horizontal and vertical control points and existing corners shall be identified with standard DOT & PF symbols.
Each SCD/SCS shall show basic planimetric background information using a screened pen. The background will typically consist of the existing edge of pavement, buildings, significant land and water bodies. Label side street names. The goal is to help orient the user without cluttering the sheet.
2.3.1 Data Tables
On projects with multiple sheets, it is preferred that tables show only data applicable to the sheet on which the table is located. Occasionally it is prudent to group larger tables on their own sheets where space dictates.
Tables shall be sorted by ascending Point Number on the SCD, and by ascending Station on the SCS.
Horizontal Control Table—A table containing existing horizontal control points of sufficient quality to control the project. These points can be set or found points. The points shall be part of a closed traverse or redundantly tied points (as spelled out in the Statement of Services). The horizontal control table shall show point numbers, Northings and Eastings (to four decimal places), and a description of the type of monument shall be shown. Station and offset referenced from the current project alignment/baseline(s) will only be shown on a SCS. An example is shown below.
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Vertical Control Table—A table containing existing vertical control points of sufficient quality to control the project. These points can be set or found points. All vertical control points shall be part of a closed level loop; side‐shots are not acceptable. The vertical control table shall show point number, Northing and Easting to the nearest foot, elevations to the hundredth of a foot, and a description of Benchmarks and TBMs shall be shown. Station and offset to the nearest foot referenced from the current project alignment/baseline(s) will only be shown for a SCS. An example is shown below.
Monument Table—A monument table shall be included as part of the SCD/SCS per the following conditions. An example is shown below.
SCD—A monument table will be included in the SCD when no ROW mapping is being done for the project.
SCS—A monument table will be included in the SCS to show any monumentation that might be affected by construction. For example, centerline monuments, GLO monuments, and property corners that are directly affected by construction.
2.3.2 Control Statements
A Horizontal & Vertical Control statement is required and will be provided by the DOT & PF Survey Section. Examples are shown below.
Horizontal Control Statement
Coordinate System:
This project is located entirely within the Anchorage Bowl 2000 adjustment, a U.S. Survey Foot local surface grid coordinate system developed by the Alaska Department of Transportation.
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Basis of Coordinates:
The Basis of Coordinates is NGS Station O’Malley, located near the intersection of the New Seward Highway and O’Malley Road. Said station has Anchorage Bowl 2000 coordinates of 303,939.2310 N, 353,362.5446 E.
Basis of Bearings:
The Basis of Bearings is a local plane bearing between NGS Station O’Malley and NGS Station Loop 2 USE RM 3 1964. NGS Station Loop 2 USE RM 3 1964 bears N 01º43’26. 4”E a distance of 49,488.45 U.S. Survey Feet from NGS Station O’Malley. NGS Station Loop 2 USE RM 3 1964 has Anchorage Bowl 2000 coordinates of 353,405.2778 N, 354,851.3982 E.
Translation Parameters:
To convert the local coordinates to NAD83 (92) State Plane foot coordinates, translate using +2,296,868.6878 N, +1,312,517.4905 E, and scale using 0.9998910192.
Vertical Control Statement
MSL NAVD 88 as determined by differential level loops performed by AKDOT between bench marks USC&GS BM V‐102 1965, a brass disk clamped to a copper coated rod, with an elevation of 356.05 feet; USC&GS BM D‐103 1965, a brass disk clamped to a copper coated rod, with an elevation of 301.58 feet; and USC&GS BM E‐103 1965 a brass disk clamped to a copper coated rod, with an elevation of 285.89 feet.
2.3.3 Notes
The notes should contain the following information:
1. The methodology of how the survey was completed.
2. The unit of measurement used for the project.
3. Who completed the survey and the date it was performed.
4. Any additional information or direction that clarifies the survey.
An example is shown below.
NOTES
1. The information shown hereon is based on a field survey performed by Alaska DOT & PF January
28 through April 1, 2014.
2. Background information depicted is shown for orientation only and should not be used for any other purposes.
3. All dimensions, coordinates, and elevations shown are in U.S. Survey Feet unless otherwise noted.
4. Horizontal control points shown on this sheet were surveyed using networked static GNSS techniques. GNSS measurements were performed using Leica Viva GS15 GNSS receivers and processed using Leica GeoOffice v8.4 software. Differential leveling was performed with a Leica DNA‐03 digital level.
5. All monument cases will have a permanent riser of sufficient height added so that the top of the monument lid matches finished grade.
6. All elevations must be field verified before use.
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2.4 Content Survey Control Diagram
2.4.1 Surveyor’s Certificate
The SCD shall be sealed and signed by a Professional Land Surveyor licensed to practice in the State of Alaska. The SCD will be filed as a Record of Survey (ROS). A Surveyors Certificate shall appear and be signed by the PLS responsible for the diagram(s). The following certificate is an example:
Surveyor's Certificate
I hereby certify that I am properly Registered and Licensed to practice Land Surveying in the State of Alaska, and that this drawing represents a survey made by me or under my direct supervision, and that the monuments shown hereon actually exist as described, and that all dimensions and other details are correct to the extent shown hereon.
(Surveyor Name) (Surveyor Registration Number) (Date)
2.4.2 Title Block
The following statements should be placed above the title block.
Recording District
State Business—No Fee
This survey does not constitute a subdivision
As defined by AS 40.15.900(5)
MTRS information shall be placed in the title block.
Cap marking details shall be drawn on the SCD as recovered or set. The cap drawings shall depict all markings on the cap including dings and scratches as well as showing their orientation relative to north.
2.5 Content SCS
1. The current project alignment/baseline(s) shall be shown. Tangents shall be labeled with bearings to the nearest second and distances to the hundredth of a foot. Curves shall have PC and PT's stations and coordinates labeled as well as Delta, Radius, Length, and Tangent values.
Curves shall be tangential, unless specifically called out otherwise and labeled accordingly. On projects with multiple adjoining alignment/baseline(s) (such as ramp, side street, bike path, and frontage road alignment/baselines) the consultant shall meet with DOT Survey personnel to determine which alignment/baseline(s) shall be shown and dimensioned.
2. The SCS shall contain the following statement:
Whether listed or not, ALL monuments or property markers, corners, or accessories, which will be disturbed or buried, shall be referenced and re‐established in their original position (A.S.
19.10.260) and recorded (A.S. 34.65.040).
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Chapter 5: Highway & Traffic Design
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TABLE OF CONTENTS
OVERVIEW ............................................................................................................................. 3 SECTION 1.
PLANSET ORGANIZATION ...................................................................................................... 4 SECTION 2.
2.1 Planset Series Organization
2.2 Series Descriptions
FILE NAMING ....................................................................................................................... 13 SECTION 3.
3.1 Drawing Naming Convention
3.1.1 Engineering Drawings
3.1.2 External Referenced Drawings
3.1.3 Planset Drawings
ADVERTISING, ADDENDUMS, & AS‐BUILTS ......................................................................... 15 SECTION 4.
4.1 Advertising
4.1.1 N.I.C. (Not In Contract)
4.1.2 Addendums
4.2 Design Closeout
4.3 “As‐Builts” (also known as “Record Drawings”) – Reserved
SHEET TEMPLATES .............................................................................................................. 16 SECTION 5.
5.1 Title Sheet (TITLE_A1nA2.dwg)
5.2 Notes Sheet (TITLE_A1nA2.dwg)
5.3 Legend Sheet (ACAD_HWY_LEGEND‐NR.dwg)
5.4 Detail Sheet Template (_C3D_HWY_Detail.dwt)
5.5 Plan and Profile Template (_C3D Sheets‐NR.dwt)
5.6 Plan and Profile Template (_C3D Sheets‐NR.dwt)
APPENDIX
APPENDIX A: H SHEET ORDER
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OVERVIEW SECTION 1.
This chapter of the Alaska Department of Transportation & Public Facilities’ (DOT&PF) Highway Design CAD Standards and Drafting Guide covers information pertaining to the Highway Design and Traffic Design sections. This guide is to be used for roadway projects.
Note: For Central Region project completion and continuity, this guide should be used in conjunction with the Central Region Highway Design Project Closeout Guide.
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PLANSET ORGANIZATION SECTION 2.
2.1 Planset Series Organization
Arrange highway project plan sets in the order shown below. Plan sheet numbering will be alphanumeric. For example, plan and profile sheets will be numbered from F1 to F19.
Series Letter Sheet Category A Title, Index, Sheet Layout Schematic, Legend/Symbols, General Notes and Survey
Control Sheets B Typical Sections C Estimate of Quantities/ Table of Estimating Factors D Summary Tables E Details F Plan & Profile Sheets – Mainline, Pathway, and Approaches G Grading (Intersections, Pads, Cul‐de‐Sacs, Roundabouts, etc.)
H Traffic Sheets (Legend & Notes, Signalization, Illumination, Signing, & Striping) J Unassigned K Automated Traffic Recorder (ATR) and Weigh‐In‐Motion (WIM) L Landscaping M Retaining Walls N Bridge Structures P Unassigned Q Erosion Sediment Control Plan (Consult PM for inclusion) R Right of Way Maps (Consult PM for inclusion) S Construction Phasing (Consult PM and Construction PM for inclusion) T Traffic Control Plans (Consult PM for inclusion) U Utilities (Consult PM for inclusion) V Unassigned W Unassigned X Unassigned Y Unassigned Z Unassigned
Consult the chapters of this guide for additional information on the planset.
Note: Do not use the letters “I” or “O” for series letters. For all the series, the total number of sheets shown in the top right corner is for that particular series only. For example, if there are 14 plan and profile sheets, the number in the total sheets box should read “F14” and so forth.
Note: Do not use aerial imagery in the plansets unless specifically requested by the Project Manager.
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2.2 Series Descriptions
Specific planset sheets and/or sections are discussed below:
A1 – Title Sheet
The Title sheet shows the general location of the project, official name of the project, project number (Federal and State), construction year, location map (with the closest M&O Station), and vicinity map. It also shows the “Project Summary” and “Design Designations” tables which are usually located on the far right side. For in‐house designs the title sheet will be signed and dated by the Project Manager (seal included), Regional Preconstruction Engineer and the Director of Design & Construction. Central Region designs shall also include the Design Section Chief (seal included) on sheet A1. For consultant designs, the Title Sheet shall be stamped by the individual that is in responsible charge of the project, as determined by the consultant. The remainder of the planset is sealed by the Professional Engineer responsible for it.
If designed by a consultant, “PLANS DEVELOPED BY:” (Name of Firm) in 0.12 size text shall be shown just above the Signature Block in the lower right corner. The name of the consultant’s firm is located just under the consultant Engineer’s Seal on all other sheets. Consultant’s logos are not allowed on any plan sheet.
A2 – Index, Sheet Layout Schematic, and General Notes
The Sheet Layout, Index, and General Notes belong on sheet A2. The Index is located on the right side of A2 followed by the list of Regional Standard Drawings and Standard Drawings that apply to the project. This placement ensures that these items are consistently easy to locate when the planset is “Z” folded.
Included in the remaining space is the comprehensive overview of the project, known as the Sheet Layout or Schematic. It is a quick‐reference “stick” drawing of the roadway with plan view outlines (from the F sheets) and sheet numbers superimposed on a scaled‐down view of the entire project. Consider including project stationing, BOP/EOP, and key features of the design to highlight and provide a “quick overview” to the user. It is placed on A2 (if it will fit) with any remaining schematics following.
A draft of the general notes is provided on the A2 template drawing. The notes should be modified to suit the project, and additional notes may be needed.
Note: Additional schematic sheets will bump the legend sheet and survey control drawings. The first sheet of plan schematics contains a table listing any alignment abbreviations.
A3 – Legend
This sheet consists of a general Legend (blocks, linetypes, etc.) that applies to the planset. It is provided by DOT&PF and includes the layer names, linetypes, colors, blocks, text sizes, etc. that apply to the planset. If extra space is needed for project specific items not otherwise shown, use space on A2 or create a new sheet that will follow the standard legend.
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It is intended that this drawing be dynamic. There is a revision table in model space to inform users of any revisions. Please ensure that you are using the most current version of the legend available.
Note: Specific legends such as Survey Control, Electrical, Landscaping, ESCP, etc. generally appear on the first sheet of their respective sections.
A4 – Survey Control
See the Survey Chapter of this Guide.
B – Typical Sections
The Typical Section sheets show cross‐section views that are typical to all or a large portion of the project with only minor modifications. If several typical sections run sequentially with direct transitions between them, the transitions do not generally require their own details. Typical sections should be organized in ascending order by station, wherever possible.
The titles of each typical are generally the street name. The locations or stations that apply are noted under the title of each typical section, as appropriate. The words “Typical Sections” are shown only in the title block in the bottom right corner.
If applicable, the “Cut Section” is generally shown on the left of the centerline and the “Embankment Section” is generally on the right.
The roadway structural section material types and depths are shown in order, from top to bottom. These should be condensed into separate details called “Pavement Structural Section No. 1”, “… No. 2”, etc.
General typical section notes are shown on the first sheet, “B1”, and are located in the upper right corner, if possible.
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Typical Section Conventions
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C – Estimate of Quantities
The Estimate of Quantities sheets show the item number, item descriptions, unit of measurement, and quantities necessary to construct the project and shall match the bid schedule, Engineer’s estimate, and the pay items in the specifications. All item numbers are shown in numeric order, starting with the smallest item number at the top. Include extra spaces, generally following each section, to allow for the possible addition of items during construction. The “Table of Estimating Factors” is always shown on the last C sheet.
D – Summary Tables
The Summary Sheets contain tables for most work items except those shown on the Plan & Profile sheets, Traffic sheets, Bridge sheets, and the Landscaping sheets. They may contain tables and totals for the project not found elsewhere. For example, a culvert pipe summary
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Summary tables are shown in numeric order, starting with the smallest item numbers on “D1”.
In each table extra spaces are included to allow for the possible addition of items during construction as well as for as‐built entries. If items are listed by sheet number, there should be a space between each break in the sheet numbers. A general guideline regarding extra spaces is one space for every half‐dozen or so entries (unless clarity is added by grouping items together).
Note: The Earthwork Quantities table may be added to the project on rare occasion. On projects with significant earthwork quantities, include a “D0” sheet with information about the excavation and embankment preparation such as what types of earthwork can be expected in different areas of the project and overall expected volumes for excavation, assumed swell factors, etc. This sheet will be included in the reviews and likely removed prior to advertisement.
The inclusion in the final planset will be at the discretion of the Project Manager and the Construction Project Manager. If an Earthwork Summary table is included in the project, it is always the first summary sheet shown “D1” and is given its own individual sheet. If not included in the planset, the information should be provided in the Design Quantity Notebook.
E – Details
The Detail sheets are drawings developed for anything that is not clearly shown elsewhere.
Examples might include details for curbs and gutters, pipe installations, curb ramps, drainage, etc. Details should be organized first by general details pertaining to the whole project followed by any particular of specific details. Similar work items should be grouped together.
F – Plan & Profile Sheets
The Plan and Profile sheets (P&P’s) orient horizontal features of the alignment to the vertical information of the profile. Generally the minimum scale of the full size planset is as follows:
1”=50’ for rural projects and 1”=20’ for urban projects. (Pavement Preservation projects may be set at a larger scale depending on the complexity. Prior to setting up sheets, confirm the appropriate scale with the Project Manager.) The preferred horizontal to vertical scale ratio is 1:10; depending on the terrain. This may be reduced to 1:5 in steep terrain.
Adjacent sheets are connected with match lines along the alignment. Stations on the profile shall proceed from left to right. Consider lining up the beginning or ending station, or a tangent section of the roadway in the plan view with the corresponding profile station. Attempt to line up features if stationing has not been established. Stationing will typically increase from South to North or from West to East. (Before setting a new stationing check if a preferred stationing has already been established for the roadway.)
Major approach roadway Plan and Profile sheets generally match the scale of the mainline.
Stationing should run south to north and west to east so that Plan & Profile run left to right but may be shown differently depending on the specific circumstances and as determined by the Project Engineer. Do not start stationing at 0+00; choose stationing that doesn’t conflict with mainline. Approach roadway sheets appear after the mainline “F” series.
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Pathway Plan and Profile sheets generally match the scale of the mainline and follow the direction of the mainline stationing. Pathway sheets appear after the mainline and major approach roadway P&P sheets.
Driveway sheets are generally at a scale of 1”=20’. Driveway sheets appear at the end of the “F” series. For simple driveway designs, the use of a detail sheet may suffice and no additional plan and profile would be required. Complicated approaches may need a plan and profile view while others may just need a profile. Use 20+00 where the driveway intersects with mainline as a general rule.
G – Grading Plans
The Grading Plan sheets show how grading features such as intersections, pullouts, gravel pads, cul‐de‐sacs, roundabouts, etc. should be constructed. Grading features often have complicated grading and drainage designs that vary from the typical sections. Grading plans show detailed elevation information to correctly construct these features and are usually shown at a larger scale than the “F” series sheets that can more easily accommodate labeling and dimensioning.
H – Traffic Sheets
The H1 sheet consists of legend items and notes that are specific to the project’s H Sheets and are not otherwise shown elsewhere within the plan set. General notes regarding Traffic information will be placed here. This drawing is stamped and signed by the Project Engineer.
Following the H1 sheet will be applicable Traffic detail sheets in the order listed in Appendix Subsequent to the detail sheets, any intersection specific signal and lighting sheets are included.
These sheets will contain all the information a contractor would need to install signals or lighting at the specific intersections. Intersection specific plan view sheets will be displayed on the AKDOT Detail border layout, and typically should be at a 1”:20’ scale. Profile view sheets including Pole Elevation sheets will use the same border but typically are displayed at a 1”:10’ scale.
Any detail sheets pertaining to project wide lighting will be placed in order as found in Appendix A. These sheets will include any information needed to install project wide lighting that is not shown elsewhere within the H sheet section or plan set. The project wide illumination plan will be added to the signing and striping plan sheets. Load center, illumination, and other summary table sheets will precede the signing, striping, and illumination plan sheets. Appropriate summary tables may be moved to the D sheet section if confusion can be avoided.
The signing, striping, and illumination plan sheets are typically shown at a 1”:20’ scale. Other scales may be used if appropriate detail of striping plans can be shown. The signing and striping plan sheets will be displayed on the AKDOT Plan and Profile border layout and can be shown in a plan and plan format. Alignments and striping station callouts will be displayed as shown on the A3 sheet under the traffic and pavement markings sections. Alignment stationing tic marks will be shown as needed to effectively augment the striping station callouts. For clarity of striping, proposed line work should be emphasized and only the needed existing line work should be shown.
K – Automated Traffic Recorder (ATR) and Weigh‐In‐Motion (WIM) Sheets
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Automated Traffic Recorder (ATR) and Weigh‐In‐Motion (WIM) sheets generally have the following items and follow a general order. On “K1” there is generally a site plan, “K” series index, notes, labels, and legend. Following “K1” should be the site layout, wiring diagrams, schedule, and details.
L – Landscaping
The Landscaping sheets are usually only included in urban projects, with rare exceptions. The overall plan usually appears on the first sheet “L1”. Total quantities are summarized on the first sheet in the “Landscape Summary” and each quantity agrees with “C1” or the Estimate of Quantities Sheet and the cost estimate. Additional landscaping detail sheets generally follow L1.
M – Retaining Walls
Retaining wall drawings belong in the M series sheets and not the E series sheets.
N – Bridge Structures
Consult with the DOT&PF’s Bridge section for guidance on the Bridge sheets.
Q – Erosion Sediment Control Plan
Generally, the Erosion Sediment Control Plans (ESCP) are not included as a part of the planset and are available separately to the contractor at the time of bidding in an appendix of the ESCP document. However, the general guidelines of this guide apply to the ESCP sheets.
If there are specific requirements, the ESCP may be included in the planset. The most common case is when a specific permanent erosion control measure is called out for on the plans and is included as a separate pay item. The details would be included in the “Q” series.
R – Right‐of‐Way Maps
See the Right‐of‐Way Chapter of this Guide.
S – Construction Phasing
Generally, the Construction Phasing Plans are not in the planset and are rarely provided to the contractor. However, the general guidelines of this Guide still apply to the sheets. If there are specific requirements, the phasing plans may be included in the planset.
T – Traffic Control Plan
Traffic Control Plans (TCP) are generally not in the planset. They are commonly provided to the contractor under a separate cover. If there are specific requirements, the TCP may be included in the planset.
See Chapter 14 of the current edition of the Highway Preconstruction Manual on when a TCP should be included in the planset.
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U – Utilities
If utility relocations are to be done by the project’s contractor, the U series sheets will be included in the planset. If the utility companies are doing their own relocations, the sheets will not be included in the planset. The sheets are generally signed by the individual that is in responsible charge of the project, as determined by the utility company.
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FILE NAMING SECTION 3.
3.1 Drawing Naming Convention
3.1.1 Engineering Drawings
These are drawing that have the data referenced material created in them. Use the following naming convention:
(Last 5 digest of the State Project #)‐(Suffix ‐ Discipline or Drawing Type)‐(Brief Description, if needed) Suffixes include:
C Alignment & Profile CM Corridor Model GIS GIS enabled ROS Record of Survey P&P Plan and Profile RW Right of Way plans RWBM Right of Way Base Map
PN Pipe Network SR Design Surface SV Survey SVBM Survey Basemap TR Traffic and Safety UL Utility XS Cross‐Sections
Examples:
12345‐C.dwg 12345‐CM‐M2.dwg 12345‐CM‐A.dwg
12345‐PN‐Culverts.dwg
12345‐PN‐M4.dwg 12345‐SR‐Lidar.dwg 12345‐XS‐M2.dwg
Alignment name convention may be used for clarification based on project complexity:
Mainline Alignments: M<counter>
Approach Alignments: A‐<counter>
Target Alignments: T‐<Parent Alignment>‐<Description>‐<RT/LT>
R.O.W. Alignments: R‐<Parent Alignment>‐<RT/LT>
Profile name convention may be:
<FG/EG>‐<Parent Alignment>‐ i.e. “FG‐M2” or “EG‐M2” meaning finished or existing grade for mainline alignment #2
Note: if there are multiple FG options, supplement FG with a counter, ex “FG2‐M2”
Corridor name convention may be:
Mainline Corridor: M‐<Description>
Approach Corridor: A‐<Description>‐<RT/LT> i.e. M‐Mainline or A‐LocalRoad
Surface name convention may be:
<Profile Name> i.e. “FG‐M2” or “FG2‐M2” or “EG‐M2”
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3.1.2 External Referenced Drawings
External Reference Drawings should be named with XR so that they group together. Use the following naming convention for external references:
Central Region
(Last 5 digits of the State Project #)‐XR‐(Brief Description)
Examples:
12345‐XR‐BDR_DTL.dwg 12345‐XR‐BDR_PnP.dwg 12345‐XR‐Design.dwg 12345‐XR‐ROW.dwg
Northen and Southcoast Region
(x)(Last 5 digits of the State Project #)‐ (Brief Description)
Examples:
x12345‐BDR_DTL.dwg x12345‐BDR_PnP.dwg x12345‐DesignLinework.dwg x12345‐ROW Limits.dwg
3.1.3 Planset Drawings
Use the following naming convention:
(Last 5 digits of the State Project #)_(Series Letter and/or Number)_(Brief Description)
Examples:
12345_A01_Title.dwg
12345_B01_Typ.dwg 12345_H05_Signal.dwg 12345_H23_SignStripe.dwg
Note: It is important to keep file names as short as possible; therefore, keep descriptions short or do not use them unless necessary. Example: 12345_B01_Typ.dwg, 12345_F12_PnP.dwg
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ADVERTISING, ADDENDUMS, & AS‐BUILTS SECTION 4.
4.1 Advertising
All 11x17’s submitted for advertising shall be signed originals. It is the drafter’s responsibility to ensure that all sheets are numbered correctly, stamped, signed, and dated.
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