Fire-resistant members containing gypsum fiberboard

An improved structure of the type having glass panels supported by framing members, said structure characterized by at least one framing member comprising a gypsum-containing fiberboard composition having a density of at least about 60 lbs/ft.sup.3, said composition containing a substantially uniform distribution of solids including set gypsum dihydrate and about 1.5 wt. % to about 30 wt. % paper fiber.

A method of preparing a glass partition wall of the type having a glass panel supported by at least first and second framing members and having at least a 20 minute ASTM E-152 fire test rating, characterized by the steps comprising:

• attaching said first framing member to said second framing member to provide support for said glass panel, at least one of said framing members comprising a gypsum-containing fiberboard composition having a density of at least about 60 lbs/ft.sup.3, a flexural strength of at least about 30 lbs (1/2 inch thick material), and a screw-holding capacity of at least about 400 lbs, said composition containing a substantially uniform distribution of solids including about 65 wt. % to about 97 wt. % set gypsum dihydrate and about 1.5 wt. % to about 30 wt. % paper fiber, about 75 wt. % to about 90 wt. % set gypsum dihydrate, about 10 wt. % to about 17 wt. % paper fiber, and a density of at least about 60 lbs/ft.sup.3, and a honeycomb-like structure.