Attachment 2.6 - CAFB CAD Standards - Jan 2024.pdf

27 SOCES AutoCad Standards January 2024

File Management:

General: Create documents for life-cycle management by Government personnel, keeping the organization straight forward and in accordance with these Standards.

Drawing Files: Simplify organization through limiting software to Autodesk (CAD*) features; layers, line types, colors, plotting commands, font types, hatches, etc. to that necessary for clear and accurate description of the work. Create entities without need to modify plot settings to achieve clear print reproductions.

Content Accuracy: Coordinate terminology describing work shown on drawings and described in specifications.

Coordinate requirements established by manufacturers and shop drawings with performance criteria described in specifications. Verify that terminology is consistent throughout the drawings. Verify there are no conflicts between specified equipment and each discipline; structural, mechanical, architectural, electrical, etc. For remodel projects, field verify existing conditions with new specified equipment.

Oversite: Review documents, prior to each submittal review, developed by design consultants to ensure accuracy of data and consistency in organization and format. Run the spell check feature prior to each review submission.

Measurements: Use Imperial or US customary units; feet, inches, fractions of an inch, degrees Fahrenheit, gallons, pounds, square feet, acre, as the primary measuring standard.

Exception is to list distance measurements using tenths of a foot. Metric Units; used only if required as secondary, background, information.

Optional Work; Where the Project requires separation of Design into Base and Optional Work, organize Bid Documents, drawings and specifications, as separate, ‘stand-alone’ design packages enabling issuance either as one or multiple projects. Specify Optional Work impact to Base Bid construction to be included with Bid Proposal.

Revit* (.rvt), Civil 3D and CAD* (.dwg) format files are due to CE Engineering Flight in the first review submittal.

XRefs, if used, are not required to be bound until the final submittal. During the review process all XRefs will be included with the AutoCAD submittals, with the paths clearly identified. (“relative path” option preferred) Both electronic (CD) and paper formats, one copy of each is required at the final submittal; half scale (11”x17”) and full (ANSI D).

Please identify CD content with a printed label or permanent marker.

Prior submissions are allowed in electronic AutoCAD (.dwg) and electronic PDF and paper format.

Data Management:

• Graphic Illustration – CAD*/Civil 3D* (.dwg) and Revit* (.rvt) are the acceptable software as applicable to project type (General/Civil/Structural, ref pg13). Files will be submitted in the latest version compatible with version in use by Government. It is the A-E/DoR/Contractor’s responsibility to verify and comply with the correct version.

• Text Narrative – Microsoft Word (.doc format).

• File Conversion – Adobe Acrobat (.pdf format).

• Accepted Formats – AutoDesk AutoCAD/Civil 3D (.dwg) and Revit (.rvt)

• PDF format drawings are acceptable as a supplemental format and .rvt and .dwg is always primary.

CAD Drawings:

Create in accordance with USACE Engineer Research and Development Center/Information Technology Laboratory TR-12-1A/E/C Graphics Standards (Aug. 2015).

Comply with specific standards identified herein, including:

Settings: Drawing Units Type – ‘Architectural’ Precision – 1/16” inch Scale – ‘Inches’, 1” = 1”

Drawing Origination: Every drawing will be an original. The Government may provide electronic files to be used as reference only. It is the sole responsibility of the

A-E/DoR/Contractor to conduct site visits to verify and record all existing conditions, using the provided files as reference.

Any/all plagiarism** is strictly prohibited, all drawings must be orginals.

Model Space

• Create each sheet as a separate, ‘stand-alone’ drawing file. Avoid complex drawing files used to create multiple sheets (paper space tabs).

• External References, (xref) – Ensure each drawing can stand-alone, is complete; containing ALL layers, information required to view, to work in and to print useable drawings, without the need to locate and attach/overlay/bind externally referenced data. Attach JPGs, OLE objects, Raster images, TIFFs and other similar representations directly to the drawing to which they are associated as block entities. Bind all pertaining xref(s) to applicable drawing upon final submittal.

• Colors – Develop drawings primarily as black and white documents designed for printing and readability on white paper. Do not use colors to ensure identification of significant design entities.

Use black, shades of grey and variation of line weight and line type to achieve contrast, clarity and legibility of details. Colors lose their identification qualities when copied.

• Layers – Limit use to the minimum necessary for the clear understanding of design intent and erection requirements.

• Bar Scale – Provide a bar scale on plan (site, floor, roof and reflected ceiling) building elevation, building section and large scale wall section details to enable measuring from reduced or enlarged print reproductions. Indicate both small increments (foot) and larger multiples (5 or 10 feet). The use of a bar scale is for a general scale reference. Never is the Bar Scale’s use to supersede the actual dimensions provided on drawings. If a question of scale arises, ALWAYS defer to the A/E/DoR/Contractor for clarification.

• Hatch Patterns – Use only when necessary to clarify extent of or emphasize drawing entity. Use a medium gray hue to distinguish area from outline of entity. The use of colored hatch or colored lines are prohibited. When there is text shown within the “hatched” area always create an island around the text to exclude hatch pattern over text so that it is legible or move the text outside the “hatched” area and provide an arrow to the item/area described by text. Ensure that the hatch scale is legible when printed and serves the intended purpose of distinguishing one area/item from another area/item without masking. When hatched areas interfere with notes, dimensions, drawing features, always use an island around the text, allowing it to be legible and still keep the hatch.

• Create all entities as flat (2D) drawings, using a ‘z’ coordinate value of zero (0). Provide flat, 2D isometric projections where 3D representations are used for design clarification.

• Orient all plan drawings in the same manner with plan north pointed to the top of the sheet. Orient lateral axis of drawing with lateral axis of the sheet. Occasionally, it is necessary for north to be oriented to the left of the sheet. Whether to the top or to the left, there will be appropriate north arrows for each plan.

• Scale of Lettering – Lettering height is critical for legibility. Lettering shall be no less than 1/8” or 3/32” to ensure readability when printed at half-scale.

• Drawing Scales – Architectural Site Plans: 1/8” = 1’-0” Floor Plans and Reflected Ceiling Plans: 3/16” or 1/4” = 1’-0” and 3/32” or 1/8” = 1’-0” for larger structures Exterior Elevations or Structural Elevations: Same as Floor Plans Building Sections: 1/4” = 1’-0”, 1/2” = 1’-0” for smaller structures Interior Elevations: 1/4”, 3/8” or 1/2” = 1’-0” depending on information represented Architectural Details: 1/2” to 3” = 1’-0” depending on complexity of detail Wall Sections, Door and Window Details: 3/4” = 1’-0” Enlarged Plans: Should be at least twice the scale of the original Floor Plan Roof Plan: Should be half the scale of the Floor Plan, if it is complex, it should be the same scale as Floor Plan Door, Window and Frame Schedules: 3/16” or 1/4” = 1’-0”

Note: Referenced scales are applicable to all disciplines

• Blocks – Create entities on Layer 0 having a Global Origin at coordinates 0-0-0 (x-y-z). When exploded, entities shall revert to Layer 0. Create symbols as blocks (e.g. electrical symbols, beam sections, doors, title blocks, etc.

• Polylines – Ensure shape integrity by converting connected lines defining a single entity to polylines.

Drawing Composition/Organization

• Drawings will be discipline specific. Each/every plan will be an original drawing, developed specifically for individual disciplines. For example, the Reflected Ceiling Plan will contain only those features that show on the ceiling. Plumbing fixtures, door swings, etc. that would show on the Architectural Floor Plan or Plumbing Floor Plan do not show on the Reflected Ceiling Plan.

• It is the responsibility of the A-E/DoR/Contractor to customize each drawing in a new set of electronic drawing files (.dwg/.rvt) to be submitted to the government during the submittal process and ultimately provided to the government. Files will be submitted in the latest version compatible with version in use by Government. It is the A-E/ DoR/Contractor’s responsibility to verify the version.

• It is not acceptable for the A-E/DoR/Contractor to use PDFs with overlay drawing information on top of the PDF. Drawings must be original drawings and specific to the project.

• Submitting any form of a PDF file as the only submittal is not acceptable.

• It is the responsibility A-E/DoR/Contractor uses government furnished drawings or originates drawings from scratch, it is the responsibility of the A-E/DoR/Contractor to customize the drawings for the new project. ALL dimensions relevant to the new project, both existing and new, will be FIELD VERIFIED by the contractor to be accurate and will be documented on drawings submitted to the Government.

• The Government will not accept, at any percent design review, drawings that have not been properly customized to reflect specific design discipline related information in the drawing set.

• When only a specific portion of an existing building is to have work accomplished within an area, there is no reason to show the entire Floor Plan at each specific discipline. The overall Floor Plan should give a “site location/key plan” of the work within the building. When showing an enlarged detail/plan info

• or specific discipline Floor Plans, there is no reason to show the entire Floor Plan UNLESS the affected areas are in different locations throughout the building and an overall Floor Plan view is warranted for multiple design disciplines. Otherwise, one overall Floor Plan and enlarged plans for specific design disciplines will be acceptable. Room permitting, it is acceptable to include details in the same design discipline as the plan on the same sheet.

• Each drawing and each layer will be identified by sheet content. Design disciplines will be named so that they are automatically grouped together in alphabetical order first by discipline, then by numerical sequence.

• Dimensions must be clear and legible. Text will be centered above the dimension line. Architectural ticks are preferred and should be the same size or a little smaller than the text. Extension line offset should be noticeable, at least the same length as the text size. Keeping the extension line offset slightly ‘disconnected’ from the item it is defining minimizes confusion as to what it being dimensioned. The dimension line should extend past the extension line and is directly related to the size of the arrow/ticks. Do not repeat dimensions on Interior Elevations, Reflected Ceiling Plans that are shown on the Floor Plan. However, Foundation Plans, Floor Plans, Structural Plans should have repeated over-all dimensions showing continuity and providing ease of reference. Dimension text offset can be adjusted by using ‘units’ (drawing units), set Precision to 0’-0 1/32”. This allows the text to be ‘tight’ to the dimension line and still readable.

• Indications, hatch, representation used throughout the drawing set must be consistent. Existing concrete in section on the civil sheets will be shown the same way throughout the drawings. All indications and/or hatches will be shown on the Explanation of Symbols.

• Abbreviations and/or anacronyms will all be shown on the List of Abbreviations.

• Every schedule, list, Index, etc. will always be customized for the specific project. Boiler plate schedules, lists or indexes with ‘N/A’ applied to unused items is not allowed.

Drawing Assembly

Create Design Models (graphic entities representing actual construction systems and elements) at full scale in model space. Locate lower left corner of drawing area (reference point) with a 0 (zero) Global Origin.

• Create composite images by superimposing multiple Design Modes, keeping in mind that the more simple the process and composition is, the better the end product is:

Architectural Construction Documentation Drawings:

Symbol Classification Structure The U.S. National CAD standard provides six classifications of symbols.

Following is a list of the symbol types, description and examples of each:

• Identity Symbols are symbols are those symbols that indicate individual objects but are not representations of the objects. Identity symbols are generally used to indicate objects such as valves, fire alarms, light fixtures and electrical outlets.

• Line symbols are symbols that indicate continuous objects and are drawn using either single or double lines. Line symbols are generally used to indicate objects such as walls, ductwork and utility lines.

• Material Symbols are symbols that graphically indicate construction materials or material of existing conditions. Material symbols may be shown in elevation, section or plan views. Material symbols are generally used to indicate objects such as brick, stone, earth, wood, concrete and steel.

• Object Symbols are symbols that represent specific physical objects. Object symbols are generally used to indicate objects such as doors, windows, toilet fixtures and furniture and are drawn to scale.

• Reference Symbols are symbols that refer the reader to information in another area of the set of drawings, or give basic information regarding the drawings or data on the sheet. Reference symbols include such symbols as elevation indicators, detail indicator, north arrow, graphic scale, section indicators and revision clouds.

• Text Symbols are symbols that graphically indicate a word or words and may be in notations on drawings.

Paper/Model Space

• Place sheet borders, title blocks, notations, symbols, dimensions, schedules, and other similar annotations only in paper space (Paper Models). Do not locate annotations in model space unless character is integral to block symbol (e.g. $3).

• Sheet Size – Restrict all design disciplines to one common size ANSI D (22x34).

• Text Size – Text sized at 1/8” – 3/32” is legible. 1/4” – 3/16” sized text is a good size to distinguish titles from general notes or dimensions.

It is important to remember that if text is not legible at half scale, the project submittal may be rejected. Illegible text anywhere in the drawing entity is not acceptable.

• Text Placement – Organize test and leader lines and arrows in a neat manner to ensure clear readability of graphic illustration and minimum clutter. Crossing leader lines is not acceptable. Horizontal text should read left to right and vertical text from the bottom of the sheet to the top.

• Detail Layout – Arrange graphical illustrations on each sheet in order of importance for reading print reproductions from lower right - most important, to upper left - least important. Keep ALL detail numbering in sequential numerical order.

• Detail Scale – Insert using scale factor enabling clear reading of small, complete entities.

• Dimension Style - Use medium gray value for lines and arrows. Use architectural ticks (preferred) or if space permits used close/filled arrows. Locate dimension text above dimension line.

Set dimension text height slightly smaller than general notes text height, maintaining legibility.

Dimensions from the outside face of the building to the centerline of an interior wall are prohibited.

• Line types – To designate different conditions use different line types, i.e. for construction to be removed, use a dashed line. For existing construction to remain, use a continuous line. For new construction, a heavier/thicker and/or darker continuous line is acceptable.

• Title Strip/Block – Use Base Standard Title Strip design as a block entity. Use only Level 1 discipline designators. Number sheets sequentially. Locate sheet identification box in lower right corner indicating design discipline (single letter) and 3-digit sheet sequence number (e.g. A-101). Locate Sheet Title Box immediately above Project Identification Box.

Indicate sheet contents, project name and number and completion (issuance) date of finalized design.

• Sheet Identification – Identify drawing content in the Title Block (e.g. Roof Plan).

List other related content where located on the same sheet (e.g. Roof Plan, Flashing Details).

(Architectural Floor Plan, Second Sheet)

• Layers – Layer names shall provide enough information so that they are readily identifiable.

In the case of a multi-floor building, a number corresponding with the floor level will be the second character in the layer name preceded by the discipline letter, followed by the sequence number.

In the following example identifying the first floor Doors layer, the number ‘1’ would follow the ‘A’, specifically A-1-DR. This naming identifies, the discipline, the layer and in the case of a multi-level building, the floor level.

• Locate Title Strip/Block with lower right corner placed as shown below.

Sheet Organization, Title Block Layout and Hierachy

• When Plan North and True North are not the same, always provide a North Arrow similar to the one shown above on every sheet. When, out of necessity, a large area site plan is involved and North will be represented differently in the drawing set, provide a True North and a Plan North for each plan.

• Attach photographs of existing conditions to drawing where work is illustrated. All overlaid information on photographs must be completely legible. Fuzzy/grainy objects are not allowed.

• Organization – Separate drawings, notes, schedules, details and etc., into sub-sets by design discipline.

Details on a sheet should be in consecutive order, for example: S-1, S-2, S-3.

• Site Plan – Indicate building footprint, pavements, walks and ancillary structures.

• Architectural Plans – Floor, roof and reflected ceiling. Indicate wall thickness, openings, locations and footprint of major equipment items.

• Building Elevations – Show openings, changes in materials, floor elevations, wall mounted equipment and roof profile. Show all sides of building, in order as they occur, including inside alcoves.

Final Deliverables

• Provide final deliverables upon Acceptance by Cannon AFB for approval/disapproval. Make corrections to documents deemed non-compliant and resubmit in a timely manner. CAD*/Civil 3D* (.dwg) and/or Revit* (.rvt) as applicable is the acceptable format for electronic drawing files. Verify with 27 SOCES the version of AutoCAD being used so that submitted As Built .dwg/.rvt files are fully compatible.

• Scan content to verify data is free of virus.

• Purge drawing files to remove extraneous and irrelevant data.

• Ensure layers are visible (‘ON’) and accessible (‘Unlocked, Thawed’)

• Ensure that all layers are designated as printable.

• Indicate project name, Base project number, contents and date (month and year) of construction completion on label. General Contractor name and contract number may be provided as supplemental information. Government’s project number is required.

• It is the responsibility of the A/E/DoR/Contractor to verify the accuracy of dimensions and building materials prior to construction to ensure project and drawing accuracy as well as at project completion and to note any/all discrepancies on “As Builts” drawings.

Printed Documents

• Print directly from original electronic files.

• Drawings – Plot on 20# white bond paper designated for technical printing. When sets are large and cumbersome, bind sheets by different design disciplines as separate sub-sets. Bind sub-sets having 15 or more sheets together with threaded removable studs in lieu of staples.

Auxiliary Database Systems

Provide modified drawings to comply with attribute and metadata application criteria required by 27 SOCES sections responsible for management of building systems.

• Asset Management Sections

• Utility maintenance Sections (electrical, plumbing and mechanical).

• Geographic Information System o Geographic Datum – World Geodetic System (WGS) 84 o Coordinate System – Universal Transverse Mercator (UTM) o Units – Meters o Logical Data Modeling – Spatial Data Standards for Facilities, Infrastructure and Environment

(SDSFIE) ver. 2.6 Compliant o Facility Management

Projects Records Documents (Construction As-Builts)

Deliver final documentation to 27 SOCES prior to issuance of final progress payment in two formats. One format is in PDF format to include drawings, both 1 copy full size, 1 copy half size and approved submittals.

The other format will be for “As-Builts” electronic files in CAD* ‘.dwg’ format on an identified CD(s) beginning at the 30% review. The “xref” files do not have to be bound to each drawing they are associated with until the “As Builts” are delivered. However, the “xref” files must be included in each submittal and their paths clearly annotated.

Construction Drawings Note all changes in a neat manner using red ink and cloud symbol.

Edit using one of the following methods:

Revision of digital drawing (direct) or edit of print copy (mechanical).

CSI 50 DIVISION FORMAT

GENERAL REQUIREMENTS SUBGROUP FACILITY SERVICES SUBGROUP

Division 01 General Requirements Division 20 Reserved

FACILITY CONSTRUCTION SUBGROUP Division 21 Fire Suppression Division 02 Existing Conditions Division 22 Plumbing

Division 03 Concrete Division 23 Heating, Ventilating & Air Conditioning (HVAC)

Division 04 Masonry Division 24 Reserved

Division 05 Metals Division 25 Integrated Automation

Division 06 Wood, Plastic & Composites Division 26 Electrical

Division 07 Thermal & Moisture Division 27 Communications

Division 08 Openings Division 28 Electronic Safety & Security

Division 09 Finishes Division 29 Reserved

Division 10 Specialties

Division 11 Equipment

Division 12 Furnishings Divisions typically used on Base Construction Projects are Division 13 Special Construction shown with bold numbers

Division 14 Conveying Equipment

Division 15

Division 16

Division 17 Reserved

Division 18 Division 19

SITE & INFRASTRUCTURE SUBGROUP PROCESS EQUIPMENT SUBGROUP

Division 30 Reserved Division 40 Process Integration/Interconnections

Division 31 Earthwork Division 41 Material Processing & Handling Equip't

Division 32 Exterior Improvements Division 42 Process Heating, Cooling & Drying Equip't.

Division 33 Utilities Division 43 Process Gas & Liquid Handling, Purification & Storage Equip't.

Division 34 Transportation Division 44 Pollution Control Equip't.

Division 35 Waterway & Marine Construction Division 45 Industry Specific Manufacturing Equip't.

Division 36 Division 46 Water & Waste Water Equipment

Division 37 Reserved Division 47 Reserved

Division 38 Division 48 Electrical Power Generation

Division 39 Division 49 Reserved

Existing/Demolition Model File Naming

There are instances when a facility is being renovated and the As-Built” designs need to be revised to show demolition and new items. These revisions would NOT be made on existing “As-Built” model files but on copies to ensure the original “As-Built” files are not modified.

A model file type, Existing/Demolition (XD) has been added to the standard to allow users to make revisions to “As-Built” files. This model file type is used to aid users in separating existing-to-remain items from items that will be demolished.

Design Review Submittals:

In regards to note numbers, detail numbers, etc. that are “not used”, these should be removed and all annotation coordinated as applicable throughout the drawings to reflect accurate info. “Not Used” info or note/detail numbers should be identified by at least the 30% submittal. “Not Used” terminology should be used on the rare occasion when a design change has occurred toward the end of the drawing production.

In many instances, the government furnishes drawing files to the A-E/DoR/Contractor. These drawings are for reference only. It is the responsibility of the A-E/DoR/Contractor to provide the government with an original, uncluttered, discipline specific drawings in the Government Standard electronic format, .dwg/.rvt.

When a drawing review submittal is provided to the government, the entire project will be at the specific percentage complete. For example, if a project has 10 buildings affected by the project, then at 30% review submittal, all 10 buildings will be at 30% complete. Having only 7 affected buildings at 30% and 3 affected buildings at 10% means the submittal is less than 30% and may be rejected.

A-E/DoR/Contractor Responsibilities

It is the responsibility of the A-E/DoR/Contractor to provide the Government with professional original drawings at each submittal. Each submittal shall be that specific percentage complete for the entire project.

When multiple facilities are involved, each discipline for each facility will be at the submittal percentage completeness. When only one facility is involved, each discipline will be at the specific percentage complete.

The Government furnished drawings are NOT intended to be used as a foundation for overlay information.

Government furnished drawings are intended as reference only. It is the A/E’s responsibility to provide original drawings developed in Autodesk software. The .dwg and/or .rvt files, as applicable, are to be furnished the Government for review beginning with the first submittal. When the Government requests drawings in PDF format, they will be part of the submittal, with .dwg/.rvt being the primary submittal format.

It is NOT the Government’s responsibility to provide Quality Control for the A-E/DoR/Contractor’s drawings.

If any part of the drawings does not comply with Cannon Air Force Base standards, at any percentage of submittal, the submittal is rejected and the A/E firm will make all necessary corrections with no delay or cost to the Government.

Provided as A-E/DoR/Contractor’s information:

*CAD = AutoCAD Software by Autodesk (General) *Revit = Revit software by Autodesk for architecture and building design (Structural) *Civil 3D = Civil 3D software by Autodesk for Civil design (Civil) **Plagiarism = Dictionary, definitions from Oxford Languages: Plagiarism, noun, the practice of taking someone else’s work or ideas and passing them off as one’s own;

To emphasize, the Government furnished drawing files are for reference only and will not be reused, customized or repurposed – all drawings furnished to the Government will be original drawing files.

Additional ‘industry drafting standards’ formation can be located in “The Professional Practice of Architectural Working Drawings” reference book.

If further information is required, please contact 27SOCES Engineering Flight Chief, 575-640-3334