Jonathan Ochshorn
Room 121-B, Rand Hall
Department of Architecture
Cornell University
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ARCH 262: Building Technology, Materials & Methods
Assign #4: Fire protection/ building code exercise


assigned: Nov. 25, 2002
due: Dec. 2, 2002

See fire safety handout for more information.

1. Assume that you are designing an elementary school with a total floor area of 30,000 square feet, sited on a 5-acre plot with at least 60 feet of separation on all 4 sides of the building.

Check whether the school can be built as a 2-story unprotected wood-frame structure:

  • What is the occupancy group? ________

  • What is the construction type?________

  • Are sprinklers required?_________

  • What is the tabular allowable floor area, including consideration of the 2-story height, but excluding consideration of frontage and sprinklers?____________

  • What is the allowable floor area, Aa = At + At Is / 100 + At If / 100

    _________________________________________________________________

  • Can school be built as proposed?___________

  • Can school be built as proposed, except as a 3-story structure?__________

  • Can school be built as proposed without sprinklers?__________

  • Can school be built as a 1-story structure without sprinklers using Type V-A construction? Show calculations for allowable floor area:

    _________________________________________________________________

  • If the school is built of Type II-A construction, what are the fire-resistive requirements in hours -- the "fire rating" -- for the following:

    • structural frame____________

    • floor-ceiling assembly____________

  • If the school is built as a 3-story sprinklered building on an urban site with separation (frontage) on the street facade only, what construction types are possible?

    _________________________________________________________________

  • If the school is built as a 3-story building on an urban site with separation on the street facade only, what construction types are possible without sprinklers?

    _________________________________________________________________

2. FInd the allowable increase for "frontage" (If) for the stie plan shown below:


last updated: 25 Nov. 2002 | "fireCode" link updated 21 April 2006

Copyright 2002 J. Ochshorn. All rights reserved. Republishing material on this web site, whether in print or on another web site, in whole or in part, is not permitted without advance permission of the author.