Drafting and Plan Set Standards

City of Tacoma (COT) Computer Aided Design (CAD) Standards

1.0 Introduction

All drawings shall:

• Be in AutoCAD Civil 3D 2022 or 2024 format.
• Be started with the COT template (DWT) 2022, or
• Be started with the COT template (DWT) 2024.
• Use the COT title block inserted as a block in the template.
• Be set to landscape orientation.
• Use the drawing layering system, fonts, and linetypes consistent with the COT CAD standards, which are included in the template.
• List of COT Standard drawings for projects is listed below in the order page arrangement for the plan set.

2.0 CAD Drafting Requirements

2.1 General

• COT template (DWT) 2022 shall be used for all drawings, or
• COT template (DWT) 2024 shall be used for all drawings.
• All layers shall be consistent with the COT CAD standards (PDF).
• All blocks (DWG) not included in the template or Symbol sheet.
• COT title block shall be used for all drawing sheets (included in the template).
• COT north arrow shall be used for all drawing sheets (included in the template).
• COT.ctb 2022 plot file, or
• COT.ctb 2024 plot file.

2.2 Base Drawing – General

• Drawing shall be tied into and use the NAD 83/91 horizontal datum and NGVD 29 vertical datum.
• Drawing plan scale shall be at a horizontal of 1″ = 20′ for all projects.
• Survey monuments and line information shall be in COT layering and block format and conform to the COT description key file and/or COT codes.
• Right-of-way and easement information, notes, and dimensions shall use appropriate COT layering and text conventions.
• Street names, lot & block numbers, plat names, and addresses with addresses owner name shall be labeled using appropriate COT layering and text conventions.
• Centerline control stationing shall be marked every 50′, labeled every 100′, and use appropriate COT layering and text conventions.

2.3 Topographic Base Map

• All survey collected points shall use COT description keys, layering, and block conventions (.xlsx) (included in the template).
• Connect all line features (pavement, curb, sidewalk, etc.) using lines and three-point arcs or circles.
• COT AutoCAD symbol blocks shall be used in drawings (included in the template).
• Hatch all corresponding areas using COT hatch patterns (included in the Symbol Sheet).

2.4 Triangulated Irregular Network (TIN) Surface

• TIN surface shall be created using all COT surface survey points, except 0 elevation and overhang survey points.
• Use COT styles for Contours display. These are part of the template drawing and start with ‘COT’. Additional styles can be added to the drawings, if needed (list additional styles in deliverables paperwork).
  • Note: existing contours are to have a dashed linetype, proposed contours shall be continuous.
• TIN shall be edited for breaks, holes and high points, bad points, missing information and other irregularities.
• COT Civil 3D styles for TIN (surface) shall be used. These are part of the template drawing and start with ‘COT’.
• Surface names shall be EG for existing ground and FG for finished grade, with the project name (can be abbreviated) included (Example: EPDX5664-EG, EPDX5664-FG). If multiple surfaces are needed, then additional descriptors can be used.

2.5 Alignments

• Alignment names shall include type of alignment (C/L, Curb, etc.) along with the street name which it represents. A brief description of the alignment is helpful (Example: EPORTLAND-CL, EPORTLAND-FOC-LT).
• Alignments styles shall conform to COT standard alignment styles, provided in the COT styles.

2.6 Profiles and Profile View

• A profile shall be created for each defined horizontal alignment (centerline, curb, utility, etc.) utilized in Plan view. Profile scale shall be 1″ = 20′ horizontal and 1″ = 5′ vertical for all projects.
• COT styles shall be used for profiles and profile views created. These are part of the template drawing and start with “COT”.
• Typical COT profiles include centerline profiles, right and left flow line profiles. Other profiles can be created and shall clearly note the alignment of the profile (example, FOW, front of walk, and BOW, for back of walk).

2.7 Existing and Proposed Utilities

• All utilities within the project scope shall be field located and shown on the base map (refer to individual contract for specific details required). All utility structures shall be shown with appropriate blocks as indicated in the COT standards.
• Label any/all inverts, stations, offsets (right or left) and pipe sizes (if known) of existing utilities on the profile and use appropriate COT layering and text conventions. Use Civil 3D styles for labeling of structures and pipes in plan and profile. These styles are part of the template drawing, and their names start with “COT”.
• Show water, sewer, and storm utilities on profiles views. Show utility crossings in profile views.
• Pipe networks shall be created for all utilities and dynamic labels used for these networks. Labels shall conform to COT label styles per the template drawings.

2.8 Deliverables

• COT layering schema and color assignments, as provided in the COT styles, must be adhered to or project will not be accepted.
• Electronic copies of 22×34 plan will be delivered to the COT along with all electronic drawing files.
• Horizontal Control worksheet must be provided along with the base mapping.
• A land xml file shall accompany all drawing files that include any of the following:
  • Surfaces
  • Alignments
  • Profiles
  • Pipe Networks
  • Corridors
  • Assemblies
• X-referencing: permanently bind all ‘x-refs’ to drawing prior to delivery.
• Do not purge text styles, civil 3d styles, blocks, or linework from drawing.
• All materials (hard copy and electronic) shall become the property of the COT.
• Submit a CD, DVD, or flash drive containing electronic files and PDF files of all pertinent documents. Plan set sheets shall be combined into one pdf document. Supplemental documents (control worksheet, field notes) must be individually named separate from plan sheet pdf. The City of Tacoma may accept files through a cloud-based file sharing program/application such as Basecamp, SharePoint, AutoCAD Cloud, but this shall be approved and agreed upon by the City of Tacoma prior to submittal.

3.0 Plan Sheet/Sheet Set Requirements

This chapter contains the City of Tacoma (COT) requirements for plan sheet set naming conventions and order of plan sheets. Also provided are example plan sheets for typical sheets expected in a plan sheet.

3.1 Sheet Set Naming and Order

See COT Sheet Naming & Sheet Order Word document for full list of production plan sheets that maybe included in a Plan sheet. The order of sheets shall match the order listed in the provided list.

3.2 Cover Sheet

• Location map showing COT limits.
• Vicinity map zoomed in to project location.
• Sheet index of drawings on the lower left corner.
• City Logo on top right of sheet.
• Plan set cover sheets shall also include: a legend, general notes, and project specific notes, i.e., water, sewer, street, and storm (provided by COT).

3.3 Symbol Sheet

• Symbol sheet shall be the COT Symbol Sheet template (City of Tacoma Symbol Sheet (DWG)).

3.4 Key Map

• Scale can vary between 1:20 to 1:100.
• Shall clearly reference all pertinent sheets, prioritizing construction, demolition plans, and utility plans.

3.5 Horizontal Control

• Scale may vary, typically between 1:20 to 1:100.
• No hatching or existing/proposed linework to be shown, only Right of Way shall be shown.
• Street names clearly labelled.
• Station equations shown at all intersection alignments.
• Type of monument clearly noted, and intersection location for the monument clearly noted (ex. “SBM @ STREET & AVENUE).
• Alignment lines and monuments clearly labelled in Plan view. Label all PI, PC, PT for curves.
• Alignment Lines and Curves table shall be included. This table shall include the following information: Line ID, Curve ID, curve/line length, Delta/bearing, radius northing, and easting information for all starting and ending points.
• Horizontal control table including all northing and easting, and elevations for all control points.
• All decimals shall be taken to the hundredth.

3.6 Road Section/Details

• Show all typical proposed road section details for project.
• Define the limits of each road section (may include start and ending stationing).
• Show all construction details needed for construction of project.
• Use COT template text font and layering styles.

3.7 Demolition Plan

• All demo layers shall conform to COT standard demo layers.
• Demolition plan notes shall conform to COT standards. City of Tacoma Standard Demo Plan Notes.
• New demo layers shall follow the COT demo layer naming convention “EX-XX-DEMO”, layers shall be set to print bold and clearly visible. Typical colors used are yellow and green per COT layering and plot styles.
• Show proposed road edge and sidewalk lines conforming to COT standard layers (faded gray dashed line).
• Refer to COT symbol sheet for demo hatching and symbols.
• Station/Offsets shall be located at all starts and ends of demolition activities for construction staking purposes.
• Clearing and grubbing lines shall conform to COT standard clearing and grubbing limits per the COT Symbol Sheet.

3.8 Construction Plan

• Proposed linework and hatching to conform to the COT standard, see Symbol Sheet template for reference.
• Alignments shall be shown and conform the COT standard alignment styles.
• Profiles and profile view shall conform to the standard stated above. Typically, shall include right and left construction profiles for the proposed roadway.
• New proposed linework or hatching naming shall conform to the COT standard, e.g. “NEW-XX”.
• Station/Offset label proposed work needed for construction staking, not present on other sheets (e.g. shifts in sidewalk alignment, road alignment, etc.).
• Construction notes shall conform to COT standard notes. City of Tacoma Standard Construction Plan Notes.
• Restoration limits shall conform to the standard provided in the COT Symbol Sheet.

3.9 Storm and Wastewater Plan

• Storm and Wastewater Plan construction notes shall conform to the COT standard.
• All proposed linework and hatching shall be shown and shall conform to COT standards.
• Pipes and structures shall conform to COT standards per the COT Symbol Sheet and/or COT blocks and line style templates.
• All storm and wastewater profile views shall conform to the standard listed above.
• All storm and wastewater pipes and structures shall be clearly labelled using COT standard labels in profile view.

3.10 ADA Ramp, Intersection, and Driveway Details

• ADA Ramp and Intersection Plans shall refer to DR-07 and shall meet the requirements for DR-07.
• All catchbasin rim elevations within the flowline shall be clearly labelled.
• All existing and proposed structures shall be clearly shown on the plans using COT standard blocks, including poles, pushbuttons, fire hydrants, utility vaults, and other appurtenances.
• ADA Ramps and Driveways details shall clearly show slopes at grade breaks.
• ADA Ramps and Driveways shall clearly show all flowline and back of curb elevations at all wings, flares, end of radii, hinge points, etc. along the flowline of the ramp and driveway.
• Crosswalk and PAR slopes or elevations in the roadway will be clearly shown, in accordance with COT Standard Plan DR-07.
• Maximum Extent Feasible (MEF) shall be clearly labelled on the ADA ramp details, if needed.

3.11 Signal and Illumination

• Include language or typical signal/illumination plans.
• Signal and illumination plans shall use COT signal and illumination notes.
• Wiring schedule notes shall conform to COT standard wiring schedule notes.
• Signal and Illumination plans blocks and symbols shall conform to the COT standard signal and illumination blocks.

3.12 Channelization and Signage

• All channelization shall have a grey background, see channelization standard and legend.
• All proposed channelization shall be shown in the correct color (i.e. yellow striping shall be yellow, white striping shall be white, green durable product shall be green, etc.).
• All plans shall be able to be printed in black and white as well as printed in color, with information being presented clearly in both printing options.
• Station and Offset in combination with dimensions shall be used to denote the start, end, and angle points for all proposed channelization for construction staking.
• All channelization layers shall conform to COT standards; new layers shall have a naming convention of CHAN-XX.
• All channelization and signage labels shall conform to the City of Tacoma standard channelization and signage notes.
• All proposed signage shall conform to the COT standard symbols and blocks.
• All channelization and signage plans shall contain the channelization and signage general notes provided in the provided templates.

3.13 Planting Plan

• Planting plans shall show locations for all trees proposed on project.
• Planting plans shall show all restoration, using the COT template for hatch styles.
• Planting plan construction notes shall conform to the COT standard construction notes for planting.
• Planting plans shall contain Tree Planting schedule with list of species, tree block symbol, and quantity.

3.14 Traffic Control Plans

• Traffic Control Plans shall conform to a scale between 1:20 to 1:100.
• Site specific plans shall clearly denote the limits of the detours and signage needed for Traffic Control needs.
• Site/Project specific traffic control plans shall be required unless otherwise approved by the Transportation Division. Traffic Control Template (K-Plans) can be used if approved by the Transportation Division and the Traffic Engineer.
• K-Plans being referred or used shall be clearly shown on the Traffic Control Plans.
• Traffic Control Template (K-Plan) approved Plans.
• Traffic Control Site Specific shall be designed and approved by the Licensed Engineer.

4.0 Right of Way Plan Requirements

4.1 Right of Way Plans – General

• Right of Way Plans shall consist of three unique parts, Cover Page, Parcels Page, and Legal Description Details.
• Title Block shall match the City of Tacoma (COT) standard Title Block.
• All Plans shall have the Licensed Surveyor’s stamp.

4.2 Right of Way Plans – Cover Sheet

• The Cover Sheet shall include:
• • Project Name
  • Project Number
  • Basis of Bearing
  • Vertical Datum for City of Tacoma
  • Equipment and Methodology
  • North Arrow
  • Vicinity Map (scale shall show the entire project limits), Section Map showing the Sections in which the project is contained, with written description of the Section information of the project.
  • Location Map, showing the location of the project within the COT.
  • Legend shall conform to the COT Right of Way Plan standard.

4.3 Right of Way Plans – Parcel Sheet

• The Parcel Sheet(s) shall include:
  • Detailed monumentation information, including northing easting, type of monument found, and location of monument.
  • Scale may vary between 1:20 to 1:100, but all labels shall be clearly noted and readable at the proposed scale.
  • North Arrow
  • Show entire parcels for properties in which Right of Way Acquisitions (Deeds), Vacations, Temporary or Permanent Easements are being requested.
  • Show and hatch the locations of the Right of Way needs matching the City of Tacoma standard hatching, label the Right of Way need including square footage.
  • Label property owner, APN, and file number for the properties affected by the ROW Needs.
  • Show proposed and existing linework, no utilities, blocks, hatches.
  • Show all ROW linework, including easements and vacations.
  • Show a table showing the affected parcels, this table shall include, file number, APN, parcel owner, total area of the parcel (Sq. ft.), Temporary Construction Easement area (sq. ft.), Acquisition area (sq. ft.), remaining area of the parcel (sq. ft.).
  • City of Tacoma Right of Way Plan Legend shall be shown.

4.4 Right of Way Plans – Legal Description Details

• Legal Description Details
  • Legal Description Details sheets shall include all legal descriptions drafted by a Licensed Surveyor.
  • A detail plan view showing all the information detailed in the legal description starting from the control point to the point of beginning then to the ROW need area. All bearing and distances for alignments and area boundaries shall be labelled matching the language in the Legal Description and in the COT style and template.
  • Plan view shall have a scale range between 1:5 to 1:20.
  • All control points called out in the legal descriptions shall be clearly noted with northing eastings, type of monument, and location of monument.
  • Points of beginning, commencement, and other points called out in the legal description shall be noted on the plan view.
  • Show proposed and existing linework only, no utilities or hatches.
  • North Arrow
  • Street Names
  • Label any existing Deeds, Vacations, Easements matching the COT legend.
  • COT Right of Way Plan Legend shall be shown.