Free Span Ceiling Grid With High Inertia Runners
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Solution Overview
Problem
Suspended ceiling grids often require multiple overhead wires for support, which can be impractical in spaces with limited overhead structure access or occupied plenums, and increase installation costs.
Innovation Solution
A ceiling grid system featuring high moment of inertia grid runners, end brackets, and wall-mounted runner end supports, including splice plates and cross hanger brackets, allowing for wire-free or reduced wire support by spanning areas with end bracket attachment and wall-mounted channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple overhead wires are used to support the ceiling grid, then the ceiling can be adequately supported, but the installation becomes impractical in spaces with limited overhead access or occupied plenums and installation costs increase
Solution Approach 1:
The patent extracts the intermediate overhead support wires from the ceiling system, eliminating them entirely by using high moment of inertia grid runners that can span long distances without intermediate support. The runners are supported only at the ends by wall-mounted channels, removing the need for wires through the occupied plenum space.
Solution Approach 2:
The patent changes the structural parameter of the grid runners by designing them with high moment of inertia cross-sections. This allows the runners to have sufficient stiffness and strength to span long distances without intermediate support, transforming them from wire-dependent components to self-supporting structural elements.
2Strength
If multiple overhead wires are used to support the ceiling grid, then the ceiling can be adequately supported, but the number of wires needed increases installation complexity and cost
Solution Approach 1:
The patent removes the complex network of intermediate support wires from the system, replacing them with a simplified end-supported configuration. The high moment of inertia runners act as self-supporting beams, eliminating the need for multiple wire attachment points and reducing overall system complexity.
Solution Approach 2:
The patent segments the support function into discrete wall-mounted channels at each end of the runners, rather than requiring continuous wire support throughout the span. This segmentation allows for simpler, localized support elements that are easier to install and maintain.
Data Source
AI summary
Components for constructing a ceiling grid across a span free of or with a limited number of suspension wires including main runners with a relatively high moment of inertia secured at their ends with brackets to wall moldings on opposing walls.