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Chapter 42

Chapter 42. Building Codes and Commercial Design. Introduction. Commercial drafting depends more on building codes This means working with the International Building Code or a local code based on IBC You must be able to properly use the code governing your area. Exploring Building Codes.

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Chapter 42

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  1. Chapter 42 Building Codes and Commercial Design

  2. Introduction • Commercial drafting depends more on building codes • This means working with the International Building Code or a local code based on IBC • You must be able to properly use the code governing your area

  3. Exploring Building Codes • International Building Code (IBC) • Published by the International Code Council (ICC) • Merger between: • Uniform Building Code (UBC) • National Building Code (NBC) • Building Officials and Code Administrators International (BOCA) • Standard Building Code (SBC)

  4. Exploring Building Codes (cont’d.) • International Building Code (cont’d) • Part of a family of codes • Structural • Plumbing • Mechanical • Fire • Residential • Several other International Codes published by the ICC (e.g., fuel gas, sewage disposal, etc.)

  5. Exploring Building Codes (cont’d.) • Building codes influence every aspect of a construction project • Code book should be available and referred to frequently • Check with building department to determine the code for drafting project

  6. Exploring Building Codes (cont’d.) • Exploring the IBC • Each code consists of related books to regulate: • Design and structural • Electrical and energy • Fire • Mechanical • Plumbing • Zoning • Construction types are numbered from I to V

  7. Exploring Building Codes (cont’d.) • Exploring the IBC (cont’d.) • Additional considerations • Safety requirements • Building systems • Building materials

  8. Determining Design Categories • Occupancy groups • Specifies by whom or how the structure will be used • Ten classifications, broken into sub classifications • Group R occupancy categories considerations

  9. Design Categories (cont’d.) • Type of construction • Five general types of construction • Represented by the Roman numerals I through V • Building area • Basic square-foot sizes • May be altered depending on construction techniques

  10. Design Categories (cont’d.) • Determining height • Occupancy and type of construction will determine maximum height • Building location and size • Impacted by zoning and the structures use • Increasing space between buildings lessens chance of additional fire damage and provides greater firefighting equipment access

  11. Design Categories (cont’d.) • Increasing the allowable floor area • Wood frames cannot be as large or tall as those built of noncombustible materials • Fire protected structural members may be larger and taller • Occupancy load • Determined by a ratio of room area to code specified area per person

  12. Design Categories (cont’d.) • Exits • Exit paths • Mostly determined by number of occupants • Determining exits • Refer to text for calculations • Exit locations • If more than one exit is required, IBC requires at least two exits be separated by one-half of the diagonal of the area served

  13. Design Categories (cont’d.) • Accessibility requirements for type R occupancies • Type of living units based on level of accessibility provided • Type A or B

  14. Design Categories (cont’d.) • Accessibility requirements for type R occupancies • Additional considerations: • Accessible routes • Operating controls • Doorways • Kitchens • Toilet and bathing facilities

  15. Using the Codes • Drafter must be aware of classifications • Many problems will need the code to solve • Requires knowledge of basic code limitations • Practice using tables in the text and similar tables of the code that govern your area

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