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The drafting standards and Computer Aided Design (CADD) requirements for Engineering at Metra, including drawing sizes, numbers, and naming conventions. It also covers the process of developing and revising drawings during different phases of Metra projects.
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Developed For: Metra Engineering Department 547 West Jackson Blvd. Chicago, Illinois 60661
Developed By: Chandra Mahalingam CADD System Administrator
Revised By:
CADD System Administrator Chandra Mahalingam
Date:
Approved By: Reviewed By:
M
!
Date: Date:
4
Issue Date: 8/ Revision Level: 03
Issued 08/18, METRA Engineering CADD Manual, Rev. 03
2
SECTION DESCRIPTION
PAGE NO.
SECTION 1 INTRODUCTION 6
SECTION 2 DRAWING FORMAT 7
SECTION 3
DRAWING NUMBERS, CADD FILE NAMING CONVENTION AND DRAWING STRUCTURE. 9
SECTION 4 DRAWING BORDER, TITLE AND TITLE SHEET 14
SECTION 5 DRAFTING REQUIREMENTS 19
SECTION 6 CELL LIBRARIES, LEVEL ASSIGNMENTAND STANDARD DETAILS. 21
SECTION 7 DRAWING DEVELOPMENT AND REVISIONS 22
SECTION 8 PROJECT DELIVERABLES 24
APPENDICES
APPENDIX 1 DISCIPLINE DESIGNATION CODES 26
APPENDIX 2 METRA DISTRICT CODES 27
APPENDIX 3 PROJECT PERCENTAGE COMPLETION 28
FIGURES
FIGURE 3.1 TEXT ORIENTATION 13
FIGURE 4.1 BORDER 29
FIGURE 4.2 TITLE SHEET 30
FIGURE 4.3 STATION AND PARKING TITLE SHEET 31
ACROYNYMS 5
METRA Engineering CADD Manual, Rev. 03 4
AB …………………. As-built
AIA ………………… American Institute of Architects
ANSI ………………. American National Standard Institute
CADD ………………Computer Aided Design Drafting
CSI…………………..Construction Specifications Institute
IFB ………………… Issued for Bid
IFC ………………… Issued for Construction
IFB …………………. Issued for Permit
IDOT ……………….. Illinois Department Of Transportation
N/A ………………… Not Applicable
NCS …………………National Cad Standards
(NAD 83) ……………North American Datum
NIBS…………………National Institute of Building Sciences
PM ………………….. Project Manager
QA/QC ………………Quality Assurance / Quality Control
RFP ………………… Request for Proposal
RFI …………………. Request for Information
ROCC ……………… Record of Contractor Contact
RFSS ………………. Request for Specific Services
TPC ……………….. Third party Contractors
UD…………………... User Department
METRA Engineering CADD Manual, Rev. 03 5
2.0 SIZE
2.1. Unless otherwise directed, it is desired that all issued for bid, issued for permit, and issued for construction plans shall be plotted on American National Standard Institute (ANSI) Arch. D (24’x36”) size sheets. Interim review hard copy drawings shall be submitted on ANSI Size B (11”x17”) sheets, unless otherwise requested in the project scope of work document. Refer to Section 8 for additional details. The following table provides other sizes that may be used by various UD & TPC. Metra may request any of the drawing sizes shown in Table 2.1, as conditions dictate.
TABLE 2.1 – ANSI SHEET SIZES
Size Dimensions (Inches) A 8.5 x 11 ARCH. A 9 x 12 B 11 x 17 ARCH. B 12 x 18 C 17 x 22 ARCH. C 18 x 24 D 22 x 34 ARCH. D 24 x 36
2.2. SEED (PROTOTYPE FILES)
To facilitate drawing creation, Metra’s Engineering Division has created a Seed file (Seed 1_1.dgn) and Ref_Metra_Brd.dgn as a reference file to Seed 1_1.dgn to be used when creating a new drawing. Scale the Seed file accordingly to different sizes as needed. Metra_Bridge.dgn should be used for developing bridge drawings using feets and inches. Metra_Road.dgn should be used for drawings using decimals. Refer to Table 2.2 for different seed files provided by Metra. Download the Seed file at www.metrarr.com/engineering
METRA Engineering CADD Manual, Rev. 03 7
2.3. DRAWING TYPES
Dimensional Dimensional drawings depict objects to scale and accurately portray the spatial relationships between them. Examples may include structural steel details, architectural elevations, track routing and layout plans, plans and profiles of storm sewers, etc. These drawings shall be prepared from the Microstation seed files provided.
2.4. REFERENCE SYSTEMS
Microstation models showing proposed and/or existing track alignments, buildings, roadways, parking areas and/or other major installations to scale shall be positioned with reference to the Illinois State Plane Coordinate System, North American Datum, 1983 (NAD83).
TABLE 2.2 – MICROSTATION SEED FILES
File Name Drawing Dimension
Seed 1_1 24’ X 36’ Ref_Metra_Brd 24’x36’ Title_Seed_Sta_Park 24’X36’ Title_Seed_gen_eng 24’ X 36’ Metra_Bridge Feet & Inches Metra_Road Decimal
METRA Engineering CADD Manual, Rev. 03 8
3.3. CADD FILES LEVELS
Each graphic entity contained in the project CADD files shall be placed on the appropriate level.
3.4. LINE COLOR
The default Microstation Color Table should be used in all drawings (shown below), except for the Color Yellow. All other colors may be used by consultants. Color 0 (Black) shall be used for the general body of the drawing.
3.5. LINE WORK
3.5.1. Line Style
Microstation line style zero (0) shall be used for general drawing development. Line style three (3) shall be used for dashed lines. Line style four (4) shall be used for centerlines. Line style six (6) shall be used for Right-of-Way lines. Microstation custom line style “Rail Road” shall be used to show tracks.
METRA Engineering CADD Manual, Rev. 03 10
3.5.2. Line Weight
Line weight 3 shall be used for the general body of the drawing. Line weight 5 shall be used for titles and sub titles. Line weight 3 shall be used for dimension lines and the existing contents of the drawing. Line weight 5 shall be used for the proposed contents of the drawing.
3.6. TEXT
Metra Engineering uses Arial font as standard text for all drawings. Arial Black shall be used for any bold characters. All text sizes provided refer to the standard “Arch D” (24”x36”) size sheet. Text size 3/32” (0.0938) should be used for all general notations. Text size 1/8” (0.1250) should be used for notes and titles. Text size 3/16” (0.1875) should be used for sheet numbers. Refer to Figure 3.1 later in this document, for proper text orientation. All text should have a minimum size of 3/32” when plotted at full scale for readability.
METRA Engineering CADD Manual, Rev. 03 11
FIGURE 3.1 – TEXT ORIENTATION
METRA Engineering CADD Manual, Revision 03 13
4.0 GENERAL 4.1. DRAWING BORDER Standard Arch D size (24” x 36”) sheets shall be used for all drawings created as part of an Engineering design project. Seed files provided shall of be used to create all of the design drawings. All seed files are developed in accordance with this section. They are described below and can be downloaded from Metra’s website.
4.2. DRAWING TITLE BOX AND PROJECT LOCATION DESCRIPTION The style, size, and placement of the title box text shall be in accordance with Figures 4.1, 4.2, and 4.3 later in this document. Unless otherwise specified by Metra, the contents of the title box shall be as specified herein. The drawing title shall include up to five lines. The first line (Location Name) contains the facility or location name in bold letters as shown in Figure 4.1.
The second line (Title) contains the sheet title information (bold font), up to a maximum of four lines, as shown in Figure 4.1.
4.3. CADD FILE NAMING BOX See Section 3 for Metra CADD drawing numbers and file naming convention.
4.4. DRAWING SCALE BOX If a single scale is used in the drawing, it shall be shown in the drawing scale box (e.g., 1”=100’, ¼”=1’, etc.). If more than one scale is used on a sheet, or if some of the information shown is not drawn to scale, the drawing scale box entry shall be shown “AS NOTED”. If a drawing is not to any particular scale, the entry shall be shown as not to scale (“NTS”).
In addition to the drawing scale provided in the scale box, a graphic scale shall be shown as appropriate (see below). The preferred graphic scale should be located just below the drawing /detail title, or in the lower right-hand corner above the Title Block. See Figure 4.1 for exact location.
METRA Engineering CADD Manual, Revision 03 14
4.11. PROFESSIONAL SEAL AND SIGNATURE BOX
Design professionals issuing the original drawing shall sign and seal the drawing. When a professional’s wet seal and signature are required, the engineer or architect responsible for the design shall seal the drawing. They shall then sign and date the drawing and indicate their license expiration date. Figures 4.1 and 4.3 show where the sheets are to be signed and sealed. The name and seal shall be clearly legible. An electronic seal with a wet signature is also acceptable.
For modifications to an already sealed drawing, the Signature and Seal shal be provided again.
4.12. DESIGNED, DRAWN, CHECKED, METRA P.M. AND DATE BOX
Except date box, all boxes shall contain the first initial and last name of the Individuals described below:
Designed – The name of the person who did the majority of the design work. Drawn – The name of the person who did the majority of the drafting. Checked – The name of the person who is responsible for checking the plan. Metra Project Manager – The name of Metra’s Project Manager. Date – Enter the date that the drawing was last revised.
4.13. REVISION BLOCKS Revision information shall be entered in the lower left corner of the Metra border. Refer to Tables 4.1, 4.2 and 4.3 for information.
REV (Revision) Column Drawing revision levels shall be entered in this column. Refer to Tables 4.1, 4.2, and 4.3 for details.
DATE Column The date on which a given revision of a drawing set is submitted shall be entered into this column, in accordance with the ISO format explained above.
METRA Engineering CADD Manual, Revision 03 16
BY, APP (Approved) columns The initials of the designer who made the revision shall be entered into the “BY” column. The initials of the person who has the authority to approve the revision, shall be entered into the “APP” column.
4.14. DATE STAMP
All hard copy submittals shall have a plot date of creation. See figure 4.1 for the stamp configuration and placement. Stamping plots in this way prevents any confusion as to which plans are the most current and allows the source file to be found easily.
4.15. COVER AND INDEX SHEET
Each drawing set will have a Cover and an Index Sheet. For Metra Stations and Parking division use cover sheet shown in Figure 4.3. Other than Station and Parking division use cover sheet shown in Figure 4.2. Index sheet using the standard border remains the same for all Engineering divisions. The Cover Sheet shall show the Metra system map, project location, Metra logo, project title, subtitles, and Metra Construction Project Number (PE number), as shown in Figures 4.2 and 4.3. Certifications and Seals should be shown in cover sheet used by Station and Parking division.
4.16. REVISION BUBBLE
Any revisions done to the drawings submitted for review outside of the established submittal milestones, shall be bubbled with the corresponding revision number. With a new issuance of documents (Issued for Bid and Issued for Construction), revision blocks shall be cleared with the initial issuance of IFB and IFC drawings.
TABLE 4.1 - REVISIONS DURING DESIGN
4 06 - 10 - 2012 CM CP 100% SUBMITTAL 3 05 - 10 - 2012 CM CP 90% SUBMITTAL 2 04 - 10 - 2012 CM CP 60% SUBMITTAL 1 02 - 10 - 2012 CM CP 30% SUBMITTAL REV DATE BY APP DESCRIPTION
METRA Engineering CADD Manual, Revision 03 17
5.0 GENERAL
5.1. GENERAL REQUIREMENTS
Drafting rules, Microstation files, and all other information Metra supplies to implement the following standards shall be used without modification. Drawings shall be revised electronically. Diagrams, contract modifications, requests for information, etc., attached to plotted sheets will not be accepted. Each project CADD file and its associated plots shall include all changes and reflect the design configuration, as the project progresses. All revisions to project CADD files shall be made in the approved version of Microstation. Revised sheets must match the size of the original drawing.
5.2. DRAWING ORIENTATION
5.2.1. General
All plans in a project depicting the same work area shall have the same scale, orientation, and match lines. Drawings shall be oriented with baseline stationing progressing from left to right across the sheet. Where possible, all drawings shall be oriented with north in the up direction.
5.2.2. North Arrows A north arrow shall appear in all plan views.
5.2.3. Details All objects depicted as details shall be oriented as they are shown in the plans and/or elevations from which they originate.
5.2.4. Cross Sections Cross sections of track or roadway alignments shall be shown such that they are viewed as though looking ahead along the alignment, in the direction of increasing stationing. When more than one cross section is shown on a sheet, the cross section shall be arranged so that the section stations increase from left to right, and from top to bottom.
METRA Engineering CADD Manual, Revision 03 19
5.3. SCALE, UNITS OF MEASURE, DIMENSIONING
5.3.1. Scale The basic scale used in each drawing shall be noted in the border scale box. The preferred graphic scale location box is just below the title or in the lower right corner, above the title block. A scale bar shall appear on the plan sheet as noted in Section 4.4.
5.3.2. Units of Measure Unless directed otherwise by Metra, United States Customary Units shall be used in the drawings. Distances, dimensions and elevations shall be expressed in feet and inches. Angles and bearings shall be expressed in degrees, minutes and seconds.
5.3.3. Dimensioning System Designers shall employ a dimensioning system as follows: Civil and utility plans shall use decimal feet. Sections, details, etc., within civil and utility drawings may be dimensioned in decimal feet and/or feet and inches. Structural, architectural, mechanical, track work, and electrical drawings and their associated sections and details, shall be dimensioned using feet and inches.
5.3.4. Dimension style Dimension arrows and dimension ticks shall be 3/16” (0.1875) in length and will be adjusted according to the scale of the drawing. Dimension text shall plot 3/32” (0.09375). Arrow heads should be closed and filled.
METRA Engineering CADD Manual, Revision 03 20
