United States Gypsum Company

Francis Harold Laux

James Joseph Lehane

Clifford Black

David McDonald

John Ellicson

Stephen W Payne, Jr

Dennis Albert Socha

Russell A Dombeck

Kurt Goodfriend

Thomas F Sheppard

The present invention relates to a sound rated floor system for inhibiting sound transmission between floors. The system includes a corrugated steel deck; a first layer of cementitious material or board or sheet applied over the corrugated steel deck; a sound insulation mat or board applied over the first layer; a second layer of cementitious material applied over the sound insulation mat or board. The floor system has an IIC rating of at least 25 and the corrugated steel deck provides at least 50 percent of the ultimate load carrying capacity under static and impact loading of the floor system with a floor deflection of at most 1/360 of the floor span.

Corrugated steel deck system including acoustic features

A J-runner, used in the construction of shaft walls in buildings is provided with a lifting element or ledge or both to permit simple centering of studs or shaft walls or both. By providing a lifting member in a lower J-runner, the studs or shaft walls or both can rest upon the lifting member to assist in vertically centering the studs or shaft walls or both when the shaft is fully constructed.

Self centering shaft wall system

Growing community of inventors

Wheeling, IL, United States of America

Francis Harold Laux