CAD_standards_R2NY1-k_0Z5RDZ-i34K-pR.pdf

PBS CAD

STANDARDS

March 25, 2004

Washington, DC 20405 www.gsa.gov/cifm

Public Buildings Service http://www.gsa.gov/cifm

PBS CAD STANDARDS March 25, 2004

TABLE OF CONTENTS

INTRODUCTION

1.0 APPLICABILITY

2.0 PBS CAD STANDARDS

3.0 SOFTWARE REQUIREMENTS

4.0 DISSEMINATION OF SENSITIVE BUT UNCLASSIFIED

BUILDING INFORMATION (SBU)

5.0 ELECTRONIC DELIVERABLES

6.0 PAPER FORMAT DELIVERABLES

7.0 OWNERSHIP

8.0 DRAWING SETUP

9.0 FILE AND LAYER NAMES

10.0 SUPPLEMENTAL TABLES

INTRODUCTION

Goal: To represent information to users of two-dimensional (2D) electronic drawings, consistent data and representation (‘standards’) are needed.

The purpose of the PBS CAD Standards is to ensure:

• Consistent 2D drawings

• An accurate source of spatial data for rent billing

• Uniform requirements for contractor design deliverables

Moreover, the CAD standards aid the business of PBS by providing:

• Accurate space assignment and rent billing data

• Drawings suitable for client agency use (such as, space planning and furniture layout)

• Maintenance and operation data

• Record drawings for management and future renovations of PBS buildings

Therefore, the PBS CAD Standards set mandatory procedures for the creation and delivery of all 2D design, construction, and engineering drawings, including assignment drawings. The CAD standards are for all PBS contractors and associates. Differing regional requirements are accommodated by the addition of regional supplements.

In principle, the PBS CAD Standards conform to the National Institute of Building Sciences (NIBS) U.S. National CAD Standard Version 2.0 (NCS 2.0). The NCS consists of:

• CAD Layer Guidelines, published by the American Institute of Architects (AIA)

• Uniform Drawing Systems (UDS) Modules 1-8, published by the Construction Specifications Institute (CSI)

• Tri-Service Plotting Guidelines, published by the Tri-Service and the U.S. Coast Guard

PBS encourages contractors and associates to refer to NCS 2.0 as an additional resource. For example, the use of NCS UDS Modules 1-8 (Drawing Set Organization, Sheet Organization, Schedules, Drafting Conventions, Terms and Abbreviations, Symbols, Notations, and Code Conventions) can help to standardize drawing production and identify errors.

Another recommended reference is the CADD/GIS Technology Center for Facilities, Infrastructure, and Environment (CTCFIE) A/E/C CADD Standard, published by the U.S. Army Engineer Research and Development Center. Release 2.0 has been recognized by NIBS to be compliant with NCS 2.0.

The A/E/C CADD Standard is a good source for graphic concepts and standard symbols.

Links to AIA, CSI, CTCFIE, and NIBS may be found at www.gsa.gov/cifm.

Last, PBS is aware of the impact building information modeling (BIM) software will have on electronic building design and representation. The PBS Commissioner has set a goal of fiscal year 2006 and beyond for the use of BIM. Guidance and standards are under development.

1.0 APPLICABILITY

The PBS CAD Standards apply to all design, engineering, and construction related to PBS capital facilities projects. Major (prospectus level) PBS projects receiving design authorization and funding in fiscal year 2006 and beyond are excepted as a class, provided that they conform to all forthcoming guidance on use of Building Information Modeling. See also 3.4 Building Information Modeling (BIM).

2.0 PBS CAD STANDARDS

2.1 The PBS CAD Standards set mandatory procedures for the creation and delivery of all 2D drawings, including assignment drawings. Assignment drawings are a specific type of facility management drawing conveying occupancy information. When PBS requests submission of assignment drawings, contractors must follow the direction given by the PBS Assignment Drawing Guidance, in addition to the PBS CAD Standards.

2.2 The contractor shall submit a written request for approval of any deviations from the PBS CAD Standards. No deviation shall be permitted unless prior written approval of such deviation has been received from the Regional CIFM Manager. The contractor shall list approved deviations in the Deliverables Readme Microsoft Excel workbook required with every submission. See 5.3 Project and Drawing Documentation.

2.3 PBS provides templates (layer seed files), titleblocks, and other files to help contractors and associates prepare drawings that comply with the PBS CAD Standards. See www.gsa.gov/cifm.

3.0 SOFTWARE REQUIREMENTS

3.1 Drawing Formats.

3.1.1 All CAD drawings shall be supplied in DWG format and be readable by the PBS-supported CAD desktop software (Autodesk AutoCAD). Being ‘readable’ means the ability to open a file without any errors (such as proxy, font substitution, xref resolution, etc.) and with objects, layers, and other file properties remaining intact. See also 3.3 Third Party Software.

3.1.2 All digital files (such as model files, sheet files, reference files, and other data files) shall be compatible with the software vendors’ currently supported versions. The contractor shall consult with the Regional CIFM Manager to confirm software versions prior to all submissions.

3.1.3 The contractor shall be responsible to supply drawing files and other data files in the format as set forth in the solicitation and the contract. Final submission may require the contractor to update all files to the most current version of the PBS desktop software suite. Various software and data upgrades are at the discretion of the Regional CIFM Manager. Use of only AutoCAD 2000 or later format will be permitted. The contractor shall consult with the Regional CIFM Manager regarding current PBS-accepted versions prior to all submissions.

3.2 Other Formats.

3.2.1 File formats for word processor documents, spreadsheet documents, or slide presentations shall be those used by the Microsoft family of office software such as Word, Excel, and PowerPoint.

Contact the Regional CIFM Manager for version. Macros may be included with these documents provided they are virus free, their function is explained next to the code, and they are not write-protected.

3.2.2 Graphics shall be submitted in TIF, GIF, JPG, CALS, or PDF file format (compressed image formats only). This option is intended for photos, conceptual sketches, etc., and not to indicate that raster file drawings will be accepted in place of AutoCAD DWG files.

3.2.3 Data file formats for projects that employ information contained in a database or spreadsheet shall be those used by one of the following: Oracle, Microsoft Access, Microsoft SQL, or Microsoft Excel. All linkages of non-graphical data with graphic elements, relationships between database tables, and report formats shall be maintained. All database tables shall conform to the structure and field naming guidance provided by PBS. The contractor shall confirm database file format preference with the Regional CIFM Manager prior to issuance of database file.

3.2.4 File formats for project management documents shall be either that used by Microsoft Project or P3 Primavera (used for some prospectus level projects). Confirm file format with Regional CIFM Manager. Save project files with baseline.

3.2.5 Deliverables integrating multiple file formats may be submitted as a PDF (version 4 or later) in addition to the base file structure. Examples include reports, photographs, and manuals created by using a variety of software packages and file formats.

3.3 Third Party Software.

3.3.1 A written request must be submitted to PBS and approved in order to submit electronic data in a format other than those given above. When it is considered in the best interest of the Government, PBS may permit third party software. Obtain approval from the Regional CIFM Manager. Note: this includes applications such as Autodesk Architectural Desktop, Building Systems, or similar, which leave non-native objects in DWG files.

3.3.2 When third party software has been approved, submit with each DWG file the following if applicable: styles, blocks, and attribute information. Intelligent blocks and objects shall retain all of their data and intelligence within the file when submitted. All information shall be maintained in model space. Software must support layer name formats in NCS 2.0, Volume 1, AIA CAD Layer Guidelines, or AIA CAD Layer Guidelines NCS Version 2.

3.3.3 Drawings that are rendered for presentation purposes, such as walkthroughs, shall be AVI files.

Include supporting surface materials files with submissions.

3.4 Building Information Modeling (BIM). The PBS Commissioner has set a goal to have Industry Foundation Classes (IFC) based BIM in support of all national office concept reviews on projects receiving design funding in fiscal year 2006 and beyond. The Office of the Chief Architect has been charged to develop and issue implementing guidance, including regional pilot project opportunities.

3.4.1 Projects and project teams are encouraged to utilize 3D object model and other building information model technology and software applications (including during project stages of planning, design, construction, and handover to space management and facility operations and maintenance).

Outputs from these applications are acceptable as deliverables to GSA, provided that 2D output is also submitted that fully complies with all provisions herein.

4.0 DISSEMINATION OF SENSITIVE BUT UNCLASSIFIED

BUILDING INFORMATION (SBU)

4.1 PBS policy on the dissemination of sensitive but unclassified (SBU) paper and electronic building information about GSA controlled space, including owned, leased, or delegated Federal facilities is set forth in PBS Order 3490.1, March 8, 2002. A major goal of GSA and the Federal Government is the safety and security of people and facilities under the care and control of GSA.

4.2 The contractor and those who are disseminating or handling SBU building documents shall take reasonable care to protect this information from being used for dangerous or illegal purposes. This includes electronic and paper format copies of SBU documents such as construction drawings and specifications for buildings, security equipment and installation, and contract guard information [PBS 3490.1, 9].

4.2.1 Sheet File Security Imprint. All building plans, drawings, and specifications prepared for construction or renovation, and/or security services, either in electronic or paper formats, shall have included on each sheet file of the construction drawings or plans in a minimum of 14 point bold face type (3 mm or about 1/8”) [PBS 3490.1, 7d(1)]:

PROPERTY OF UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

Do not remove this notice

Properly destroy documents when no longer needed

4.2.3 Cover Sheet Security Imprint. The following paragraph will be noted on the cover page of all drawing sets and on the cover page of the specifications in a minimum of 14 point bold face type (3 mm or about 1/8”) [PBS Order 3490.1, 7d(2)]:

PROPERTY OF THE UNITED STATES GOVERNMENT

COPYING, DISSEMINATION, OR DISTRIBUTION OF THESE DRAWINGS, PLANS,

OR SPECIFICATIONS TO UNAUTHORIZED PERSONS IS PROHIBITED

Do not remove this notice

Properly destroy documents when no longer needed

5.0 ELECTRONIC DELIVERABLES

5.1 Electronic files and documentation are due with the final submission (and any required interim submission) for each project. (A sample set might be requested up front.) This includes studies, data, or graphics, which may or may not include drawings. Final submissions that do not include all files and documentation are incomplete. PBS reserves the right to reject, require corrective action, and withhold final payment until the files and documentation are complete. PBS places particular emphasis on the receipt of final record drawings. These drawings are used in the management of PBS buildings, which have a significant amount of change evolution in tenant space and renovation over their life span.

5.1.1 All deliverables must have any addenda, changes, and modifications included in the conformed, as-built, or record document so that there is no need to cross reference with separate addenda or modification documents.

5.1.2 All SBU building information, either in electronic or paper formats, shall have imprinted on each page of the information [PBS 3490.1, 7d(1)]:

PROPERTY OF UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

Do not remove this notice

Properly destroy documents when no longer needed

5.1.3 The contractor shall retain a copy of all electronic deliverables for at least one year. During this time if requested, the contractor shall provide up to two additional copies of each at no additional cost to PBS.

5.2 A copy of all electronic files and documentation shall be delivered to the appropriate PBS regional office on CD-R, DVD-R, or DVD+R. Media used shall be in a format that can be read and processed by

PBS current hardware and software. File compression is prohibited. Permission to submit on other media must be obtained from the Regional CIFM Manager.

5.2.1 Scan all files for viruses before placing on media.

5.2.2 Media jewel cases shall be labeled with the information below. Include SBU imprint. Label the media itself to contain as a minimum: date, GSA project name/number, and building name/number.

Label Checklist 1 Date 2 GSA project name, project number 3 Building name, number, and address 4 Short description of media content 5 Contractor name, contact name, telephone number 6 PBS Contact name, telephone number 7 CAD and operating system software name, version 8 Virus-scanned, date, software used 9 Sequence number of digital media 10 SBU imprint [PBS 3490.1, 7d(2)], see 5.1.3 above

5.3 Project and Drawing Documentation. With every submission, the contractor shall include a completed Deliverables Readme Microsoft Excel workbook. See www.gsa.gov/cifm.

Deliverables Readme Contents 1 Project Documentation and Drawing Information. Identifies project and software versions.

2 Deviations List. Approved deviations from the PBS CAD Standards. Lists user-defined Model File Types or Sheet File

Level 2 Designators, user-defined layer names, user-defined linetypes, and nonstandard fonts. Note: Regional CIFM Manager must approve all deviations in writing prior to submission.

3 Bulk Import Templates. Spreadsheets for importing project drawings, assignment drawings, and/or other files into the PBS electronic document management system (EDMS). Complete as needed for type of deliverables submitted.

5.4 Quality Control. The contractor is responsible to quality control check their submissions. PBS will visually and electronically check these submissions to verify compliance. PBS will reject and require correction of any required deliverables or formats that do not meet requirements. For final deliverables, verify that all entities outside the drawing limits are deleted. Remove all extraneous graphics outside border area. PURGE all blocks, layers, attributes, etc. not referenced in the drawing. Verify that all xrefs are attached without drive or directory specifications. (Users of AutoCAD 2000 or later must check that all unused layout tabs are deleted.)

PBS CAD Standards Electronic Checks Name of check What requirement is checked (section/paragraph number) Unresolved xrefs Include all xrefs with submission (3.1.1) Unresolved image xrefs Include all referenced images with submission (3.1.1) Missing shape files Include all referenced shapes with submission (3.1.1) Internal drawing errors (corruption) No internal errors (3.1.1) AutoCAD version Only 2000 and later permitted, and only up to the currently supported release specified in the regional supplement (3.1.3) Filename validation Name files as specified (9.0) Layer names Use AIA layers (8.3.9) Objects on layer 0 Use AIA layers, not layer 0 (8.3.9) Xref paths Don’t include paths in xrefs (8.3.21) Xrefed sheet files (incorrect assembly) Assemble files as prescribed directed (8.2.2) Fonts Use only approved fonts (8.3.18) Big Fonts (not just regular fonts) Use only approved fonts (8.3.18) Paper size check Drawings shall plot from paper space with plot scale of 1:1 (8.2.2 and 10.0) Lineweights assigned to layers Assign lineweights to layers (8.3.12) Object color set to BYLAYER Entity properties shall be BYLAYER (8.3.6) Object linetype set to BYLAYER Entity properties shall be BYLAYER (8.3.6) Object lineweight set to BYLAYER Entity properties shall be BYLAYER (8.3.6)

PBS CAD Standards Electronic Checks (continued) Drawing variables Set as prescribed (8.3.20) Block definition subentities on layer 0 Draw objects used to create blocks on layer 0 (8.3.2) Nested blocks Avoid nested blocks (8.3.2) List PURGE-able objects PURGE all entities not referenced in the drawing (5.4) Unused layouts Don’t leave unused layouts (5.4) ZOOM-ed to extents ZOOM to extents (8.3.20) Security imprint Include security imprint (4.2.1)

6.0 PAPER FORMAT DELIVERABLES

6.1 All deliverables must be submitted and received in a timely manner. A transmittal letter shall accompany each electronic deliverables submission. The letter shall be signed by the appropriate contractor’s representative and state the total number of CDs or DVDs submitted.

6.2 The contractor shall provide two paper format copies of drawings with each submission, unless PBS specifies otherwise.

6.3 If required, the contractor shall affix the professional seal to paper format drawings. Electronic copies of sealed drawings shall contain a statement that the paper format drawings bear the seal.

This statement should be placed near where the seal would appear on the paper format drawing.

7.0 OWNERSHIP

The Government, for itself and such others as it deems appropriate, will have unlimited rights to all information and materials developed under this contract and furnished to the Government. This includes any documentation thereof, reports and listings, and all other items pertaining to the work and services pursuant to this agreement including any copyright. Unlimited rights under this contract are rights to use, duplicate, or disclose data and information, in whole or in part, in any manner and for any purpose whatsoever without compensations to or approval from the Contractor. The Government will, at all reasonable times, have the right to inspect the work and will have access to and the right to make copies of the above-mentioned items. All digital files, associated data, and other products generated under the contract shall become the property of the Government.

8.0 DRAWING SETUP

8.1 Accuracy.

8.1.1 Contractors are responsible for the accuracy of all CAD drawings delivered to PBS. For all drawing entities, all lines meet at intersections, straight lines are straight, blocks are inserted properly and only once per each insert point, and all entities coexist without overlap (for example, without duplicate lines on different layers). PBS may provide contractors with existing CAD drawings for convenience. However, these drawings shall be used as a base reference only. Unless otherwise specified by the contracting documents, the contractor is responsible for field verification of existing conditions, and ensuring that all electronic documents comply with the PBS CAD Standards.

8.1.2 The minimum standard for building measurement accuracy is 3 mm or 1/8”. When using electronic equipment, the error tolerance is very small, therefore, the tolerance should be the smallest allowed by the equipment use.

8.2 Drawing Organization and Assembly.

8.2.1 Model and sheet files are two types of files used in electronic construction documentation.

Model files contain a drawing (or model) of the building or site, which is drawn full scale (1:1). Sheet files organize information for plotting. They consist of views of the model file(s), titleblock, border, and other information to appear on the printed sheet. In Autodesk AutoCAD, there are two types of workspaces: model space and paper space. See also 9.0 FILE AND LAYER NAMING.

8.2.2 Assemble drawings as shown below. The base model file is xrefed into the discipline specific model file at full size in model space. The reference must be placed in the World Coordinate System at 0,0,0 with 0 degrees rotation. The discipline specific model is xrefed into the sheet file at full size in model space. Viewports are drawn in paper space. The drawing content is scaled through the viewports and plotted at 1:1. The titleblock may reside in an xref or in the sheet file. The titleblock shall reside on Layer G-ANNO-TTLB, the titleblock text, on Layer G-ANNO-TTLB-TEXT. For titleblocks, see www.gsa.gov/cifm.

A-FP03. dwg xref

E-QP03. dwg

EP-105..dwg xref

Model file information block on layer G - ANNO - TTLB titleblock xref on layer

G - ANNO-REFR

OR titleblock on

G - ANNO-TTLB

model space model space paper space paper space model space paper space xref

G-DG.dwg [OPTIONAL] titleblock on layer

G - ANNO - TTLB

model space paper space

8.3 Other Drawing Requirements.

8.3.1 Attributes. Attributes may be used to store data in the drawing. Do not use attributes to store large amounts of data (greater than 10% of drawing size) or types of data that are better stored in external databases. (Facility data drawings are the only exception on a case-by-case basis).

8.3.2 Blocks. Any graphic entity that occurs repeatedly in drawings should be made into a block. Do not block the entire drawing or large portions of the drawing. Attributes contained within a block should pertain to the current project. Use logical insertion points such as the center of a circle or the lower-left corner of a square. Keep names simple and descriptive. Purge all unused blocks from the drawing. Nested blocks are permitted but should be avoided whenever possible. Draw objects used to create blocks on layer 0, so that the block inherits the properties of the layer on which it is inserted.

Do not insert blocks on layer 0 (zero).

8.3.3 Dimensioning. All dimensions shall update automatically when the distance they are measuring changes (associative dimensioning). Metric dimensions shall conform to PBS PQ260 GSA Metric Design Guide. Dimensions should be scaled using the system variable DIMSCALE.

8.3.4 Drawing Limits. Do not set the limits any larger than necessary to accommodate the drawing.

No entities shall be located outside the drawing limits.

8.3.5 Drawing Origin. Organize drawings in model space so that the lower left intersection of the outermost column lines that remain constant on most floors is placed at 0,0,0. In order to ensure proper insertion of xrefs and the stacking of floor plans, the origin point for an entire building must be consistent between model files. Once the origin is established, it cannot be changed. For sheet files, place the lower-left corner of the sheet at 0,0,0.

8.3.6 Entity Properties. Entity properties (color, linetype, and lineweight) shall be BYLAYER.

8.3.7 Graphic Standards. Drafting standards and symbols shall be in accordance with the AIA Architectural Graphic Standards. Suggestion: consult NCS 2.0 UDS Modules 1-8 for drafting conventions and symbols.

8.3.8 Hatching. Do not use polylines with increased width for poché or hatching. All hatching shall be associative. Hatching shall not deviate from AutoCAD defaults.

8.3.9 Layers. All drawing files shall be produced using AIA layer names and layer name formats.

See 9.0 FILE AND LAYER NAMES. When submitting drawings, no objects will be on layer 0 (zero) unless otherwise specified. Script files that turn on and off layers in order to produce different drawings within the same file are prohibited.

8.3.10 Layer Colors. Choice of layer colors is at the discretion of the contractor. Note: do not use yellow or bright colors (especially in hatches) for color plots on white paper. Such colors compete with the information conveyed by the drawing. Use of darker colors and half tones is recommended.

8.3.11 Linetypes. Contour lines, dashed lines, and other fonted lines shall be made of one continuous line segment and not of a series of separate line segments. If linetypes other than standard AutoCAD linetypes are used the LIN file must be provided with the submission. Use of toned or pochéd lines are acceptable for distinguishing between various types of work, such as new from existing, one phase from another, or background floor plans. Curved entities such as circles, arcs, and ellipses shall be created of one continuous line segment, except for entities that have to be physically constructed in a segmented fashion. These may be segmented to represent the joints in the actual construction.

8.3.12 Lineweights. Assign lineweights to layers. In the layer properties dialog box, select the lineweight of a layer. Once the layer lineweight is set, it applies to all entities on that layer.

8.3.13 Scale. Create drawing entities at full size. For example, a 100-foot wall will be drawn to 100 feet and a 36-inch column will be drawn to 36 inches. Drawings considered schematic in nature can be drawn to any scale. Some examples of schematic drawings are schedules, riser diagrams, schematic diagrams, and single line diagrams.

8.3.14 Plan Drawings. Create a separate model file for each drawing. Use sheet files to combine floor plans with non-plan information or multiple elevations. Do not combine several drawings such as elevations, sections, and details in one model file. When a floor plan is too large to fit on a single sheet at the desired scale use viewports in separate sheet files to show portions of the floor. DO NOT create individual model files for portions of a floor. For sheet sizes, see 10.0 SUPPLEMENTAL

TABLES.

8.3.15 Plotting. Paper format drawing deliverables need not be plotted from AutoCAD. However, electronic drawing deliverables are required to be able to accurately reproduce those paper format deliverables when plotted from AutoCAD using HDI drivers and the following settings:

Plot Style Parameter Table Setting Plot Color For black and white: 7

For color plots: Use object color Dither For black and white: On

For color plots: Off Grayscale Off Pen Number Automatic (unless required by your plotter) Virtual Pen Automatic (unless required by your plotter) Screening For black and white: Refer to pen table

For color plots: 100 Linetype Use object linetype Adaptive On Lineweight Use object lineweight Line End Style Use object end style Line Join Style Use object join style Fill Style Use object fill style

Note: Make sure the Plot with Plot Styles option is checked in the Plot dialog box. Screening is not used for color printing because colors already have various degrees of color intensity.

The following files are available for download at www.gsa.gov/cifm:

CTB Files Containing the Standard Pen Tables r200X monochrome screening.ctb For plotting black and white r2000 and later drawings in r2000 and later with screening r200X color nonscreening.ctb For plotting color r2000 and later drawings in r2000 and later without screening

Pen Tables for Previous AutoCAD Releases The following pen table files are not used for plotting drawings produced in accordance with the current PBS CAD Standards.

They are provided for accurately plotting background drawings provided by PBS which were produced under previous PBS Standards.

r14 monochrome nonscreening.ctb For plotting black and white r14 and earlier drawings in r2000 and later without screening r14 color nonscreening.ctb For plotting color r14 and earlier drawings in r2000 and later without screening r200X monochrome nonscreening.ctb For plotting black and white r2000 and later drawings in r2000 and later without screening

8.3.16 Screening. Screening (graying printed lines to varying degrees) can be accomplished by selecting a color, which corresponds to the level of screening desired (smaller values produce lighter lines), from the GSA Screening Pen Table. See www.gsa.gov/cifm. If screening is not desired, avoid using colors with screening values less than 100.

8.3.17 Templates (layer seed files) and titleblocks. PBS-provided templates (layer seed files) and titleblocks shall be used to prepare all drawings. Model files are required to have a model file information block. See www.gsa.gov/cifm.

8.3.18 Text and Fonts. Use only standard AutoCAD or approved True Type fonts. For file with acceptable fonts list, see www.gsa.gov/cifm. The minimum plotted text size for all full size drawings shall be 3/32”. It may be necessary to use other text sizes for clarity and presentation purposes

8.3.19 Units. Metric units shall be the standard system of measurement for new facilities and most design and construction projects unless otherwise specified. Refer to PBS PQ260 GSA Metric Design Guide. However, imperial units may be approved for use for projects in existing buildings when existing drawings are imperial. Contact the PBS Project Manager if either metric or imperial units have not been specified. Assignment drawings shall be in imperial units. Base units for metric shall be millimeters, for imperial, inches. Note: Merely changing the unit system variable does not convert the drawing from metric to imperial or vice versa.

http://www.gsa.gov/cifm http://www.gsa.gov/cifm

8.3.20 Variables and Commands. Set as follows for all drawings submitted to PBS:

Variables Settings ISAVEPERCENT 0, ensures every SAVE is a full SAVE PDMODE 0, controls how point objects are displayed PDSIZE 0, sets the display size for point objects TILEMODE 1 (model space) for model files; 0 (paper space) for sheet files; For TILEMODE = 0, PSPAC E shall be active, not MSPACE (floating model space)

VISRETAIN 1

Note: A script for setting variables automatically is available for download at www.gsa.gov/cifm. This utility is offered AS IS, is not supported, and GSA makes no warranty as to its use or performance. In no event will GSA be liable for any consequential, incidental, or special damages. This utility is an aid to compliance, but is not guaranteed to work in all versions of AutoCAD, and is not guaranteed to make drawings compliant. As always the party responsible for producing the drawing is ultimately responsible for compliance with policy.

Commands Settings BASE Insertion base point (0,0,0) GRID Off LAYER Current layer is on LIMITS Off, drawing limits to drawing size LINETYPE Current entity linetype BYLAYER POINT Display mode 0, size 0.0 QTEXT Off SNAP Off TEXT Style STANDARD UCS Set UCS to world UCSICON Set UCSICION to no origin UNITS (linear) As appropriate for drawing UNITS (angular) Decimal degrees (surveyor’s units for civil drawings) ZOOM To drawing extents

8.3.21 Xrefs. AutoCAD term for external reference. Xrefs help to organize drawing information, enhance coordination, and minimize redundant data. The xref path shall not include drives, directory designations, or relative paths (AutoCAD Release 2004 feature). Place the xref on a layer whose name contains the AIA Minor Group REFR. Document the relationship between drawing file and xref on the project documentation report and deliverables matrix available at www.gsa.gov/cifm. Circular references are prohibited.

8.3.22 Attached Image Files. Images may be incorporated into drawings by the IMAGEATTACH command (which produces a link, much like an xref), or by the INSERTOBJ command, which can produce a linked or embedded OLE object, or by the PASTE command, which produces an embedded OLE object. Images may be used for renderings, maps, etc. If images are attached, include image files with the submission.

8.3.23 AutoCAD 2004 Features. Digital signatures are allowed. Password protection is prohibited.

9.0 FILE AND LAYER NAMES

9.1 Model File Names.

9.1.1 Model files graphically represent the building’s physical layout and components such as floor plans, sections, elevations, and schematic details, each requiring its own separate model file. Model files are drawn full size in model space with the exception of schematic diagrams, which can be at any scale.

9.1.2 Model files shall include a PBS-provided information block, which describes the content of the model file. The information block is inserted on layer G-ANNO-TTLB at 0,0,0 in paper space.

9.1.3 Name model files as shown below. The Regional CIFM Manager must approve any user-defined Model File Types. Submit list of user-defined types with drawing submissions.

Model File Names Step Number of Characters Example 1 Start with Discipline Designator One followed by hyphen A- 2 Follow with Model File Type 2 FP 3 Follow with Floor Number 2 followed by hyphen 01- 4 To create unique file name, follow with ASID number for funded projects. For formative Prospectus projects where ASID number is not available, use Congressional line item number. Verify with Regional CIFM Manager.

8 followed by period RNY00339.

SAL96001.

5 End with file extension 3 dwg

Result A-FP01-RNY00339.dwg (funded project with ASID number) A-FP01-SAL96001.dwg (formative Prospectus project with Congressional line item number) First floor Architectural plan

Note: Supplemental PBS guidance for other drawing types may require use of an underline instead of the hyphen. Verify with Regional CIFM Manager.

Model File Name Guidelines Discipline Codes Civil A Architectural C-EP Environment B Geotechnial C-GP Grading C Civil C-RP Roads / Topographic D Process C-SV Survey E Electrical C-UP Utility F Fire Protection G General Electrical H Hazardous Materials E-CP Communications I Interiors E-GP Grounding L Landscape E-LP Lighting M Mechanical E-PP Power O Operations P Plumbing Fire Protection Q Equipment *-VP Evacuation Plan (may be other disciplines) R Resource F-KP Sprinkler Plan S Structural T Telecommunications Interiors V Survey/Mapping I-CP Ceiling Plans W Civil Works I-EP Enlarged Plans X Other Disciplines I-RP Furniture Plans Z Contractor/Shop Drawings I-NP Finish Plans

Drawing Type Codes that Apply to All Disciplines Mechanical 3D Isometric/3D M-CP Control Plans DG Diagrams M-HP HVAC Ductwork Plans DP Demolition Plan M-PP Piping Plans DT Detail EL Elevation Plumbing FP Floor Plan P-PP Plumbing Plans QP Equipment Plan SC Section Structural SH Schedules S-FP Framing Plans SP Site Plan S-NP Foundation Plans XP Existing Plan Telecommunications Discipline Codes Specific to Particular Disciplines T-DP Data Architectural T-TP Telephone A-CP Ceiling Plans A-EP Enlarged Plans Operations (Assignment Plans only) A-NP Finish Plans O_KY Key Drawing A-RP Roof Plan O_SR Source Drawing O_AP Assignment Plan Note: If using sheet grid coordinates, refer to NCS 2.0 UDS Module 1 for direction on naming detail files and coordinating the individual detail file to the specific detail sheet.

Floor Number 01-99 First to 99th Floor B1 Basement G1 Ground Floor K1 Parking Level M1 Mezzanine P1 Penthouse RX Roof Plan A through Z SB Subbasement Note 1: If more than one, use increment number on Basement, Parking Level, Mezzanine, and Penthouse.

Note 2: Floor Number may not apply to all drawings, especially details.

9.2 Sheet File Names.

9.2.1 Sheet files are used to assemble model files for plotting and viewing purposes. Every sheet file has a drawing area, title block, and border, and represents one plotted drawing. Sheet files shall be assembled in paper space and set up to be plotted at 1:1 scale. In AutoCAD, set plot scale 1:1.

9.2.2 Name sheet files as shown below. The Regional CIFM Manager must approve any user-defined Level 2 Designators. Submit list of user-defined designators with submissions.

Sheet File Names Step Number of Characters Example 1 Start with Discipline Designator Level 1 One followed by a hyphen A- 2 Or, use Discipline Designator with Level 2 Designator 2 followed by a hyphen AD- 3 Follow with Sheet Type Designator One 1 4 Follow with Sheet Sequence Number 2 (3 if needed) followed by a hyphen 01-

5 To create unique file name, follow with ASID number for funded projects. For formative Prospectus projects where ASID number is not available, use Congressional line item number. Verify with Regional CIFM Manager.

8 followed by period RNY00339.

SAL96001.

6 End with file extension 3 dwg

Result A-101-RNY00339.dwg (funded project with ASID number) A-101-SAL96001.dwg (formative Prospectus project with Congressional line item number)

Or AD-101-RNY00339.dwg AD-101-SAL06001.dwg First Architectural plan in set First Architectural Demolition plan in set

Note: Supplemental PBS guidance for other drawing types may require use of an underline instead of the hyphen. Verify with Regional CIFM Manager.

Discipline Designators Level 1 and Level 2 Level 1 Level 2 Description Content A - Architectural All or any portion of subjects included in Level 2 AS Architectural Site AD Architectural Demolition Protection and removal AE Architectural Elements General Architectural AI Architectural Interiors AF Architectural Finishes AG Architectural Graphics

Discipline Designators Level 1 and Level 2 (continued) Level 1 Level 2 Description Content C - Civil All or any portion of subjects included in Level 2 CD Civil Demolition Structure removal and site clearing CS Civil Site Plats, dimension control CG Civil Grading Excavation, grading, drainage, erosion control CP Civil Paving Roads, driveways, parking lots CI Civil Improvements Pavers, flagstone, exterior tile, furnishings, retaining walls, and water features CT Civil Transportation Waterways, wharves, docks, trams, railways, airfields, and people movers CU Civil Utilities Water, sanitary sewer, storm sewer, power, communications, fiber optic, telephone, cable television, natural gas, and steam systems CJ User Defined CK User Defined

W - Civil Works All or any portion of subjects included in Level 2 WJ User Defined WK User Defined

Z - Contractor/Shop Drawings All or any portion of subjects included in Level 2 ZJ User Defined ZK User Defined

E - Electrical All or any portion of subjects included in Level 2 ES Electrical Site Utility tunnels, site lighting ED Electrical Demolition Protection, termination, and removal EP Electrical Power EL Electrical Lighting EI Electrical Instrumentation Controls, relays, instrumentation, and measurement devices ET Electrical

Telecommunications Telephone, network, voice, and data cables

EY Electrical Auxiliary Systems Alarms, nurse call, security, CCTV, PA, music, clock, and program EJ User Defined EK User Define

Q - Equipment All or any portion of subjects included in Level 2 QA Athletic Equipment Gymnasium, exercise, aquatic, and recreational QB Bank Equipment Vaults, teller units, ATMS, drive-through QC Dry Cleaning Equipment Washers, dryers, ironing, and dry cleaning QD Detention Equipment Prisons and jails QE Educational Equipment Chalkboards, library QF Food Service Equipment Kitchen, bar, service, storage, and processing QH Hospital Equipment Medical, exam, and treatment QL Laboratory Equipment Science labs, planetariums, observatories QM Maintenance Equipment Housekeeping, window washing, and vehicle servicing QP Parking Lot Equipment Gates, ticket, and card access QR Retail Equipment Display, vending, and cash register QS Site Equipment Bicycle racks, benches, and playground QT Theatrical Equipment Stage, movie, rigging systems QV Video/Photographic

Equipment Television, darkroom, studio

QY Security Equipment Access control and monitoring surveillance QJ User Defined QK User Defined

F - Fire Protection All or any portion of subjects included in Level 2 FA Fire Detection and Alarm FX Fire Suppression Fire extinguishing systems and equipment FJ User Defined FK User Defined

G - General All or any portion of subjects included in Level 2 GI General Informational Drawing index, code summary, symbol legend, orientation maps GC General Contractual Phasing, schedules, contractor staging areas, fencing, haul routes, erosion control, temporary and special requirements GR General Resources Photographs, soil borings GJ User Defined GK User Defined

B - Geotechnical All or any portion of subjects included in Level 2 BJ User Defined

BK

H - Hazardous Materials All or any portion of subjects in the following Level 2 Designators HA Asbestos Asbestos abatement, identification, or containment HC Chemicals Toxic chemicals handling, removal or storage HL Lead Lead piping or paint removal HP PCB PCB containment and removal HR Refrigerants Ozone depleting refrigerants HJ User Defined HK User Defined

I - Interiors All or any portion of subjects included in Level 2s ID Interior Demolition IN Interior Design IF Interior Furnishings IG Interior Graphics Murals and visuals IJ User Defined IK User Defined

L - Landscape All or any portion of subjects included in Level 2 LD Landscape Demolition Protection and removal of existing landscape LI Landscape Irrigation LP Landscape Planting LJ User Defined LK User Defined

M - Mechanical All or any portion of subjects included in Level 2 MS Mechanical Site Utility tunnels, site lighting MD Mechanical Demolition Protection, termination, and removal MH Mechanical HVAC Ductwork, air devices, and equipment MP Mechanical Piping Chilled and heated water, steam MI Mechanical Instrumentation Instrumentation and controls MJ User Defined MK User Defined

O O- Operations All or any portion of subjects included in Level 2 OJ User Defined OK User Defined

X - Other Disciplines All or any portion of subjects included in Level 2 XJ User Defined XK User Defined

P - Plumbing All or any portion of subjects included in Level 2 PS Plumbing Site Extension and connection to Civil Utilities PD Plumbing Demolition Protection, termination, and removal PP Plumbing Piping Piping, valves, and insulation PQ Plumbing Equipment Pumps and tanks PL Plumbing Domestic water, sanitary and storm drainage, fixtures PJ User Defined PK User Defined

D - Process All or any portion of subjects included in Level 2 DS Process Site Extension and connection to civil utilities DD Process Demolition Protection, termination, and removal DL Process Liquids Liquid process systems DG Process Gases Gaseous process systems DP Process Piping Piping, valves, insulation, tanks, pumps, etc.

DQ Process Equipment Systems and equipment for thermal, electrical, materials handling, assembly and manufacturing, nuclear power generation, chemical refrigeration, and industrial processes

DE Process Electrical Electrical exclusively associated with a process and not the facility DI Process Instrumentation Instrumentation, measurement, recorders, devices and controllers

(electrical and mechanical) DJ User Defined DK User Defined

R - Resource Data furnished without warrant to accuracy RC Resource Civil Surveyor’s information and existing civil drawings RS Resource Structural Existing facility structural drawings RA Resource Architectural Existing facility architectural drawings RM Resource Mechanical Existing facility mechanical drawings RE Resource Electrical Existing facility electrical drawings RJ User Defined RK User Defined

S - Structural All or any portion of subjects included in Level 2 SD Structural Demolition Protection and removal SS Structural Site SB Structural Substructure Foundations, piles, slabs, and retaining walls SF Structural Framing Floors and roofs SJ User Defined SK User Defined

V - Survey/Mapping All or any portion of subjects included in Level 2 VA Aerial Survey VF Field Survey VH* Hydrographic Survey VI Digital Survey VU Combined Utilities VJ User Defined VK User Defined

T - Telecommunications All or any portion of subjects included in Level 2 TA Audio Visual Cable music, and CCTV systems TC Clock and Program Time generators and bell program systems TI Intercom Intercom and public address systems TM Monitoring Monitoring and alarm systems TN Data Networks Network cabling and equipment TT Telephone Telephone systems, wiring, and equipment TJ User Defined TK User Defined

Sheet Type Designators 0 General (symbols, legends, notes, etc.)

1 Plans (horizontal views) 2 Elevations (vertical views) 3 Sections (sectional views) 4 Large Scale Views (plans, elevations, or sections that are not details) 5 Details 6 Schedules and Diagrams 7 User Defined 8 User Defined 9 3D Representations (isometrics, perspectives, photographs)

9.3 Layer Names.

9.3.1 All drawing files shall be produced using the layer name formats in NCS 2.0, Volume 1, AIA CAD Layer Guidelines, or AIA CAD Layer Guidelines NCS Version 2. Due to copyright reasons, contractors and associates must refer to these publications for a list of AIA-approved layer names.

9.3.2 PBS has developed templates (layer seed files) with the most common layers for each discipline. See www.gsa.gov/cifm. If other layers are needed, follow the AIA layer name format to create additional layers. AIA layer names consist of a discipline code, major group, minor group, and optional status field. For example, A-WALL-FULL-E is the layer name for a full height architectural wall existing to remain. Layer names may be upper or lower case. Do not use major or minor groups in conjunction with disciplines under which they are not listed. The Regional CIFM Manager must approve user-defined layers. Also, a list and description of such layers must be submitted to PBS along with the drawing submission.

9.3.3 AIA layer guidelines allow different layer names for the same information such as A-COLS, I- COLS, and S-COLS. PBS does not allow the use of duplicate names and requires that the information be placed on the layer of the discipline responsible for the information. For example, columns should always be placed on the structural layer (S-COLS), lighting should always be placed on the electrical layer (E-LITE), and plumbing fixtures should always be placed on the plumbing layer

(P-FIXT).

10.0 SUPPLEMENTAL TABLES

Typical Line Weights / Uses in Construction Drawings Type Line Weight Layer Name* Description Thin 0.18 mm/ 0.007 in. THIN Dimension leaders/ witness lines, dimension lines, object lines seen in the distance, and most patterns Medium 0.25 mm/ 0.010 in. MEDM Minor object lines, line terminators (arrowheads and ticks), hidden lines, and note leader lines Medium Thick 0.35 mm/ 0.014 in. MEDT Most object lines, text, schedule boxes, and charts Thick 0.50 mm/ 0.020 in. THIK Minor title underlining, title text, object lines requiring special emphasis Extra Thick 0.70 mm/ 0.028 in. XTHK Use sparingly for underlining titles and separating portions of drawings, elevation grade lines, building footprints, and top of grade markings

Optional 1.00 mm/ 0.040 in. OPTI

* Layer name modifier to use when layers are separated by line weights such as title blocks and details

Imperial Plotted Text Heights Scale 3/32” 1/8” 5/32” 3/16” ¼” 3/8” ½” 1/32” = 1”-0” Text Height = 3’ 4’ 5’ 6’ 8’ 12’ 16’ 1/16 ”= 1’-0” Text Height = 1’-6” 2’ 2’-6” 3’ 4’ 6’ 8’ 3/32” = 1’-0” Text Height = 1’-1 ½” 1’-6” 1’-8” 2’-3” 3’ 4’-6” 6’ 1/8” = 1’-0” Text Height = 9” 1’ 1’-3” 1’-6” 2’ 3’ 4’ ¼” = 1’-0” Text Height = 4 ½” 6” 7 ½” 9” 1’ 1’-6” 2’ 3/8” = 1’-0” Text Height = 3” 4” 5” 6” 8” 1’ 1’-4” ½” = 1’-0” Text Height = 2 ¼” 3’ 3 ¾” 4 ½” 6” 9” 1’ ¾” = 1’-0” Text Height = 1 ½” 2” 2 ½” 3” 4” 6” 8” 1” = 1’-0” Text Height = 1.13” 1 ½” 1.875” 2 ¼” 3” 4 ½” 6” 1 ½” = 1’-0” Text Height = ¾” 1” 1 ¼” 1 ½” 2” 3” 4” 3” = 1’-0” Text Height = .38” ½” .625” ¾” 1’ 1 ½” 2”

Actual Height of Text in CAD Drawing

Metric Plotted Text Heights Scale 2 mm 3 mm 5 mm 6 mm 12 mm 24 mm 1:200 Text Height = 400 mm 600 mm 1000 mm 1200 mm 2400 mm 4800 mm 1:100 Text Height = 200 mm 300 mm 500 mm 600 mm 1200 mm 2400 mm 1:50 Text Height = 100 mm 150 mm 250 mm 300 mm 600 mm 1200 mm 1:25 Text Height = 50 mm 75 mm 125 mm 150 mm 300 mm 600 mm 1:10 Text Height = 20 mm 30 mm 50 mm 60 mm 120 mm 240 mm 1:5 Text Height = 10 mm 15 mm 25 mm 30 mm 60 mm 120 mm 1:1 Text Height = 2 mm 3 mm 5 mm 6 mm 12 mm 24 mm

Actual height of text in CAD drawing

Plotting Sheet Sizes (ANSI Sizes A, B, and Architectural Sizes) Size Horizontal Dimension Vertical Dimension F 1067 mm 42” 762 mm 30” E 1219 mm 48” 914 mm 36” D 914 mm 36” 610 mm 24” C 610 mm 24” 457 mm 19” ANSI B 432 mm 17” 279 mm 11” ANSI A 279 mm 11” 216 mm 8 ½”

Acceptable Drawing Scales for Sheets (Note: full size sheet files shall be assembled in paper space and plotted at 1:1.)

Architectural Scales Engineering Scales Metric Scales Drawing Scale Plot Scale Drawing Scale Plot Scale Drawing Scale Plot Scale 1” = 5000’ 60000 1” = 2500’ 30000 1” = 1250’ 15000 1” = 1000’ 12000 1” = 500’ 6000 1:5000 5000 1” = 200’ 2400 1:2500 2500 1” = 100’ 1200 1:1250 1250 1” = 50’ 600 1:1000 1000 1” = 40’ 480 1:500 500 1” = 30’ 360 1/16” = 1’-0” 192 1” = 20’ 240 1:200 200 1/8” = 1’-0” 96 1” = 10’ 120 1:100 100 ¼” = 1’-0” 48 1” = 5’ 60 1:50 50 3/8” = 1’-0” 32 1:30 30 ½” = 1’-0” 24 1” = 2’ 24 1:20 20 ¾” = 1’-0” 16 1” = 2’ 24 1:20 20 1” = 1’-0” 12 1” = 1’ 12 1:10 10 1 ½” = 1’-0” 8 1:10 10 3” = 1’-0” 4 1:5 5 6” = 1’-0” 2 1:2 2 Full size 1 1:1 1

Conversion Factors Quantity From Inch-Pound Units To Metric Multiply by Length Mile km 1.609 344* Yard m 0.914 4* Foot m 0.304 8* Foot mm 304.8* Inch mm 25.4*

Area Square Mile km2 2.590 00 Acre m2 4 046 87 Acre ha (10 000 m2) 0.404 687 Square Yard m2 0.836 127 36* Square Foot m2 0.092 903 04* Square Inch mm2 645.16*

*Denotes exact conversion

Units and Conversion Guide / Comparison of Drawing Scales Inch-Foot Scale Inch-Foot Ratio Metric Scale Full Size 1:1 1:1 Half Size 1:2 1:2 4” = 1’-0” 1:3 3” = 1’-0” 1:4 1:5 2” = 1’-0” 1:6 1-1/2” = 1’-0” 1:8 1:10 1” = 1’-0” 1:12 ¾” = 1’-0” 1:16 1:20 ½” = 1’-0” 1:24 1:25 ¼” = 1’-0” 1:48 1:50 1” = 5’-0” 1:60 1/8” = 1’-0” 1:96 1:100 1” = 10’-0” 1:120 1/16” = 1’-0” 1:192 1:200 1” = 20’-0” 1:240 1:250 1” = 30’-0” 1:360 1/32” = 1’-0” 1:384 1” = 40’-0” 1:480 1:500 1” = 50’-0” 1:600 1” = 60’-0” 1:720 1” = 80’-0” 1:960 1:1000