National CAD Standard/Uniform Drawing System

 

I. The National Institute of Building Sciences developed

Organizes electronic building design data that is produced in a large number of different and various formats

      Streamlines communication and the exchange of data

      Makes the compilation/comprehension of electronic building data easier

      Relies on the voluntary adoption of the Standard

      Currently consists of 4 different parts

            Introduction and Amendments: published by NIBS

            CAD Layer Guidelines -AlA (taught in AET 181)

            Uniform Drawing System: 8 modules. Published by CSI

Plotting Guidelines of the US Coast Guard

   Developed by the USDOD CADD/GIS Technology Center

 

      Drawing Organization and standards vary from office to office.

 

II. Eight Modules

      A. Drawing Set Organization

      B. Sheet Organization

      C. Schedules

      D. Layering

      E. Drafting Conventions

      F. Attributes

      G. CAD Standards

      H. Color

 

III. Drawing Set Organization

      A. Set Content and Order

            Drawings sets are divided into subsets

            a. General - Title sheets, index sheets (if required)

            b. Civil - site work, excavation, site improvements

            c. Landscape

            d. Structural

            e. Architectural

            f. Interiors

            g. Equipment

            h. Fire Protection

            i. Plumbing

            j. Mechanical

            k. Electrical

            l. Telecommunications

            m. Resource

 

IV. Sheet Identification

            Five character/digit system

      A. Discipline Designators

            a. One or two characters

b. Discipline modifiers only used on large drawing sets - complex projects.

B. Sheet Type Designators - middle character

C. Sheet sequence numbers - 01 through 99

 

V. Much more to come in UDS

      A. Architectural Drawings

Title sheet - Project title, Owner, consultants names, building code information, index of drawings

            Site plans - plans may be created for site plans, site grading, landscaping

            Floor plans - shows the horizontal relationships between rooms

                  Often used as a basis for identifying the location of other drawings

Exterior elevations - shows vertical views of the exterior of the building from all directions. Special views may be created for hidden areas. Indicates exterior finishes, window, door, and eave heights, etc.

Roof plans - shows a horizontal view of the roof. Usually drawn at the same scale as the floor plan

Reflected ceiling plans - show a reflected plan view of the ceiling as though looking through a mirror lying on the floor

Sections - a vertical slice through the building. Shows relationships between portions of the building

Schedules - usually a matrix of information about one project component such as doors, room finishes, windows, etc.