CAD Standards Manual 1 of 5

XYZ LLC, LLC CAD Standards Manual

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CAD STANDARDS MANUAL TABLE OF CONTENTS I. Introduction.........................................................................................................................................3

A. Purpose of Manual ...........................................................................................................................3 B. Scope ...............................................................................................................................................3

II. CAD System........................................................................................................................................4 A. Software Applications & Versions ....................................................................................................4

1. Drafting Software .........................................................................................................................4 2. Drawing Review Software............................................................................................................4 3. Spreadsheet Software .................................................................................................................4

B. Software Customization ...................................................................................................................4 III. Project Planning & Setup ..................................................................................................................5

A. Project Specific Standards...............................................................................................................5 B. Drawing Origin Point ........................................................................................................................5 C. Project Documentation.....................................................................................................................5

IV. File Storage & Server Drives .............................................................................................................6 A. Drawing Files ...................................................................................................................................6 B. Master Files......................................................................................................................................6 C. CAD Spreadsheets ..........................................................................................................................6 D. File Naming Conventions.................................................................................................................6

V. Drawing Setup & Structure................................................................................................................7 A. Use of Modelspace & Paperspace...................................................................................................7 B. Plan Sheet & Drawing Border Size ..................................................................................................7 C. Drawing Scales ................................................................................................................................7 D. XREF’s .............................................................................................................................................8 E. Archived & Older Drawings..............................................................................................................8

VI. Drafting Procedures...........................................................................................................................8 A. Sheet Numbering .............................................................................................................................8

1. Discipline Designators .................................................................................................................9 2. Sheet Type Designators ..............................................................................................................9 3. Sheet Sequence Designators......................................................................................................9 4. User-Defined Designators .........................................................................................................10

B. Title blocks .....................................................................................................................................10


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C. Viewports .......................................................................................................................................12 VII. Graphic Concepts.............................................................................................................................13

A. Linetypes & Lineweights ................................................................................................................13 B. Hatch Patterns ...............................................................................................................................14 C. Line Colors .....................................................................................................................................15 D. Screening .......................................................................................................................................15

VIII. Annotation.........................................................................................................................................16 A. Text ................................................................................................................................................16 B. Dimensions ....................................................................................................................................16

1. Dimension Checklist ..................................................................................................................17 2. Linear Dimensions .....................................................................................................................17 3. Angular Dimensions...................................................................................................................18 4. Circle & Arc Dimensions ............................................................................................................19 5. Fillet & Round Dimensions ........................................................................................................19 6. Hole Dimensions........................................................................................................................20 7. Slotted Hole Dimensions ...........................................................................................................20 8. Chamfer Dimensions .................................................................................................................21 9. Ordinate Dimensions .................................................................................................................21 10. Dimension References ..............................................................................................................22

C. Multileaders....................................................................................................................................23 D. Symbols .........................................................................................................................................24

1. Text Based Symbols..................................................................................................................24 2. Block Symbols ...........................................................................................................................25

IX. Documentation .................................................................................................................................26 A. PDF Creation .................................................................................................................................26


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I. Introduction

A. Purpose of Manual This manual was developed to provide Computer Aided Drafting (CAD) standards and guidelines for use by the XYZ LLC CAD Department. Due to the rapidly changing technologies used in drafting and design, this manual should be considered a “living” document that will need to be revised when the drafting technology used at XYZ LLC changes.

B. Scope This manual covers the basic preparation of drawings by the CAD department at XYZ LLC using AutoCAD as the drafting software.


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II. CAD System The CAD system used at XYZ LLC is comprised of networked CAD Workstations running Windows XP Professional (both 32-bit and 64-bit) operating system. Drafting software is installed on each of the CAD Workstations; the network provides file, printer and plotter sharing, as well as access to email, internet and other shared resources. The purpose of this system is to give the CAD department state-of-the-art tools to maximize productivity of the department.

A. Software Applications & Versions

1. Drafting Software AutoCAD is the current drafting software used at XYZ LLC. The current version installed on each of the CAD Workstations is AutoCAD 2008 SP 1. All drawings used by, or provided to, the department shall be in DWG (native AutoCAD) format.

2. Drawing Review Software There are two kinds of drawing review software used by XYZ LLC. Autodesk’s Design Review 2011 (ADR) software is used to view, markup and plot DWF files (Design Web Format). Adobe’s Acrobat 8 Standard is used to view, markup and plot PDF files (Portable Document File). ADR is also used by the CAD department to create multi-sheet PDF.

3. Spreadsheet Software Microsoft Office Excel 2003 SP3 is the standard software used by XYZ LLC for all spreadsheets and charts.

B. Software Customization The XYZ LLC CAD department used a customized set of symbols, lines, fonts and hatch patterns, as discussed in the following sections of the manual. All of these files can be found on the server’s I drive in the CAD folder. It is recommended that each CAD team member adjust the AutoCAD environment to increase accuracy and efficiency. A sample of a streamlined user interface is included in the back of the manual.


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III. Project Planning & Setup

A. Project Specific Standards The standards described in this manual will apply to the majority of drawings that are made by the CAD department. There may be projects where a variance from these standards will provide a better methodology – an example of this would be revising a set of drawings that were completed prior to the creation of these standards. In cases where the use of these standards would require a significant amount of re-work, project-specific standards may be acceptable. If you are unsure, ask the CAD manager before proceeding with any work.

B. Drawing Origin Point All drawings should have an origin point of 0,0,0, also referred to as the “zero-point.” There is a marker included on the Defpoints layer that shows where the zero-point is located in each of the template files. The distance between the objects in a drawing and the zero-point is important, especially with hatch patterns and XREF’s. If a hatch pattern is too far from the zero-point, the pattern will appear broken and out of scale. If using and XREF, the zero-point in one drawing should align with the zero-point in the other drawing so the XREF file will overlay in the proper position.

C. Project Documentation Once the drawings have been approved by the customer, and all customer-requested changes have been made, the CAD team member assigned to the project will print a hard copy of the drawing set stamped with the dated master stamp, and make two copies of the mastered set which will be stamped with the copy stamp. The master set will be placed in the filing cabinet outside of the CAD room, and the two copies will be given to the project manager (PM) or project coordinator (PC). It is the PM/PC’s responsibility to deliver the copies to the appropriate build team for production.


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IV. File Storage & Server Drives

A. Drawing Files All DWG and DWF files, along with any other file types that are customer supplied that contains information about the project will be stored in customer specific folders on the server’s I drive (commonly referred to as the engineering drive). You are not allowed to store customer specific files on your workstation’s drive (i.e. C drive).

B. Master Files Our mastered PDF files are stored in the Approved CAD folder on the S drive (also known as the shared drive). No other file types are allowed in this folder. Every employee with computer access will have access to this folder at any time.

C. CAD Spreadsheets Each of the spreadsheets that the CAD department uses is stored on the S drive in the CAD Dept folder. You should place a shortcut to this folder or specific spreadsheets such as the CAD Project Tracking file on your desktop for easy access.

D. File Naming Conventions Drawing files should be named in a way that anyone in the CAD department can easily identify both the customer and the project that the drawing is for. For example, the file name EBB_2176.dwg would let the CAD team members know that the drawing is for Einstein Bagels store #2176. Another example would be file name UOI_Plano_FR.dwg. This drawing would be for Urban Outfitters Inc., the store is Plano, TX and the project is the fitting room package. Master PDF files should have the exact same name as the drawing file, but also include either APPROVED or REV# (# being the revision level of the most current drawing) at the end of the name to let someone know if it is an original master drawing or a revised master drawing. Using the same file names above, the approved drawing would be EBB_2176 – APPROVED.pdf and the revised drawing would be UOI_Plano_FR – REV1.pdf.


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V. Drawing Setup & Structure

A. Use of Modelspace & Paperspace All drafting/drawing will be done in modlespace at 1:1 ration, or full size. All dimensions, notes, leaders, annotation blocks, schedules, title blocks and plotting will be done in Paperspace. Do not place any annotations in modelspace unless absolutely necessary (for example, ordinate dimensions are required to be in modelspace since the origin point will always default to the zero-point and will need to be moved to a point on the object being detailed).

B. Plan Sheet & Drawing Border Size The most often used sheet size at XYZ LLC is ANSI B 11”x17”. This sheet size can be oriented either horizontally or vertically, depending on how the drawings need to be shown so that the details can be clearly seen. There are standard title blocks set up for both orientations for 11”x17” sheets. On occasion, you may need to create an installation guide for use in the field that will be ANSI D 22”x34”. There is a title block available for this sheet size as well. Each of these sheet sizes are set up with a 1/4” plotting offset. The base point of the title blocks will always be placed at the zero-point in Paperspace.

C. Drawing Scales All 2D drawing views will be plotted to scale. The list of approved scales is as follows: • 3/32” • 1/8” • 3/16” • 1/4” • 3/8” • 1/2” • 3/4” • 1” • 1-1/2” • 3” • 6” • Full or 1’ Each of these scales can be found on at architect’s scale (except for 6”) and are available in the viewport tag (see SYMBOLS). All 3D drawing views, such as isometrics or perspectives, can be set to any standard or custom scale that best shows the view, but should never have a scale other than NTS (Not to Scale) in the viewport tag.

CAD Standards Manual 1 of 5

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