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30-minute residential fire protection of floors

A technology for residences and floors, applied to floors, buildings, building components, etc. It can solve the problems of easy freezing in regular maintenance and high installation cost of sprinkler systems, and achieve the effect of improving light reflection and low cost

Inactive Publication Date: 2013-12-11
USG BORAL BUILDING PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sprinkler systems are expensive to install, require regular maintenance and testing, and are prone to freezing

Method used

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  • 30-minute residential fire protection of floors
  • 30-minute residential fire protection of floors
  • 30-minute residential fire protection of floors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] exist figure 1 and figure 2 A typical residential floor construction 10 utilizing light wood joists 11 is shown in . In the example shown, the joists 11 are wooden I-beams, typically having oriented strand board (OSB) webs 12 and square timber flanges 13 . Other lightweight wooden I-beams, not shown, may have their webs factory made with openings for piping or other facilities spaced along their length. Lightweight wood joists can also be of the parallel-chord truss type, with square timber sections joined by barbed metal plates.

[0012] The described wooden light joists have many recognized advantages over solid square logs, but unfortunately have serious disadvantages when they are exposed to fire from below for a relatively short period of time. Some studies have shown that light wood joists fail after as little as 6 minutes compared to 30 minutes for regular solid sawn wood joists.

[0013] The present invention provides a low cost fire barrier to protect resi...

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PUM

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Abstract

A fire protective barrier for a residential floor (10) and a method of its construction, the construction involving a floor (10) supported on lightweight joists (11) of a type susceptible to early failure once exposed to a fire existing in the space below the floor, an array of elongated steel main tees (21) suspended below the joists, the tees being parallel and spaced apart by a nominal distance of 21, the tees having an upper hollow reinforcing bulb, a central vertical web extending downwardly from the bulb and a horizontal flange extending laterally from both sides of the web, drywall panels (22) carried on upper faces of the flanges of adjacent pairs of tees, the drywall panels having a width of slightly less than the center-to-center distance of the tees, a majority of the panels having lengths of 8 ' or more.

Description

technical field [0001] The present invention relates to building construction, and in particular to methods and materials for inexpensively fireproofing floor joists. Background technique [0002] Recent experience has shown that uncovered light joist construction in residential properties, while adequate under ordinary circumstances, may be susceptible to early structural failure in the event of a fire. This situation poses a serious risk to occupants and firefighters or other rescuers who may walk on floor areas damaged by the underlying fire and fall through weakened areas. There is a need for a viable, inexpensive way to protect light joists to extend the time they can withstand a fire occurring below. Sprinkler systems are expensive to install, require regular maintenance and testing, and are prone to freezing. Conventional drywall ceilings require taping and eliminate available access to joist spaces for inspection, repair, and installation or other purposes. Lightw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B5/12E04B9/00E04B9/24E04B9/30
CPCE04B5/12E04B9/001E04B9/241E04B9/30E04B9/00E04B9/24
Inventor G·F·米勒
Owner USG BORAL BUILDING PROD
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