Delaware Administrative Code
Title 1 - Authorities, Boards and Commissions
700 - Delaware State Fire Prevention Commission
702 - Fire Protection in Building Construction
Chapter 2 - Fire Barriers
Section 702-2-3.0 - Two-Hour Rated Fire Wall (Class "B" Fire Barriers)

Universal Citation: 1 DE Admin Code 702-2-3.0

Current through Register Vol. 28, No. 3, September 1, 2024

Note: Two-Hour Rated Fire Walls (Class "B" Fire Barriers) are utilized to sub-divide buildings that exceed 10,000 aggregate gross square feet, only where no public or private water distribution is available. See Regulation 702, Chapter 4 of this Regulation.

3.1 A Two-Hour Rated Fire Wall may be used to reduce a fire compartment within a building to the area limitations required by Chapter 4 of this Regulation, or any other part of these Regulations.

3.2 Two-Hour Rated Fire Walls shall meet the following criteria:

3.2.1 The fire wall is to be constructed in accordance with the provisions of the Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls, NFPA 221;

3.2.2 The fire wall, is to be of masonry construction and is to have a two-hour fire resistance rating;

3.2.3 The fire wall is to be a cantilevered/free standing fire wall; or, a tied fire wall; or, a double fire wall;

3.2.4 Continuous through the roof and parapetted a minimum of thirty (30) inches. The parapet height shall be measured from the top surface of the roof being protected. Roofs sloped greater than 1/4 in. per ft. downward toward the wall shall be provided with a minimum thirty-six inch (36") parapet;

Exception No. 1 to 3.2.4: This wall may terminate at the underside of a noncombustible roof deck.

Exception No. 2 to 3.2.4: Exception #1 may be utilized only one time per building exceeding 10,000 square feet. Any Barrier utilized thereafter shall be parapetted per these Regulations.

3.2.5 Openings, if any, protected with a 1 1/2 hour fire rated protective assembly on both sides of the opening.

Note: Exceptions No. 1 and 2 to subsection 3.2.4. These exceptions allow the use of a Class B Barrier without a parapet in buildings up to 20,000 square feet. This type of Class B Barrier can be utilized only one time, and any additional fire barriers shall be parapetted per these Regulations.

Disclaimer: These regulations may not be the most recent version. Delaware may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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