Log In Sign Up

NOTE: This is an unformatted excerpt from our online fire protection training library.

Authorities, Specifications and Codes & Standards

Alternative Protection for an Older Structure

In a major northern city, an office building is being renovated. It was originally constructed in 1972 as a completely fire-resistive building. Construction was all concrete and concrete-encased steel. The building is nine stories high and meets the definition of a high-rise building as listed in the modern building code applied by the city now. The building is going to go through a major cosmetic renovation.

The "code" requires total sprinkler protection for a high-rise building, and although this wasn't a requirement in 1972, the local fire marshal deems it necessary life safety protection for the occupants. To provide total sprinkler protection will make the renovation cost prohibitive, and the building would be left vacant. The owner and the AHJ sit down with a qualified engineer, and they develop alternative protection for the building. The protection concept will consist of stairwell pressurization for the fire resistive stair towers, partial automatic sprinkler protection designed in accordance with NFPA 13 to protect all exit paths, a smoke barrier dividing each floor into two zones, and a total fire alarm system, designed in accordance with NFPA 72, using voice communications and fire fighter phones.

The alternatives offered what the AHJ considers an acceptable level of protection when compared to the benefits of total automatic sprinkler protection. Keep in mind that the people in an office building will be able to move or easily be moved to the exit stairs or to the other side of the smoke barrier. This arrangement would probably not be allowed in an occupancy that housed impaired people but is deemed an acceptable alternative in this case.
NOTE: This is an unformatted excerpt from our online fire protection training library.

Contact Us:

Please fill in the fields below:

    Privacy Policy
    Please choose all that interest you.

    Contact Customer Service at AcademySupport@jensenhughes.com or 800-930-9414 option 1.

    Our regular support hours are 9:00 AM to 5:00 PM, Monday through Friday, except holidays...