Prefabricated Panel with Thin Concrete and Steel Frame
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Solution Overview
Problem
Existing prefabricated building panels are heavy, require thick concrete for strength, and struggle to meet stringent energy codes while balancing weight, size, thermal insulation, and material costs.
Innovation Solution
A prefabricated building panel design featuring a concrete slab with a thickness of 2 inches or less, stainless steel anchors for structural reinforcement, and continuous insulation filling the spacing between the concrete and framing, which reduces weight and supports structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If concrete thickness is increased to support panel weight and wind loads, then panel strength is improved, but panel weight and volume increase significantly
Solution Approach 1:
The patent combines concrete with a steel frame structure and insulation materials to create a composite panel system. The steel frame provides structural strength and rigidity, allowing the concrete slab to be much thinner (2 inches or less) while maintaining the panel's overall strength to resist wind loads and support building weights.
Solution Approach 2:
The panel is divided into separate functional components: a thin concrete slab for weather protection, a steel frame for structural support, and insulation for thermal performance. This segmentation allows each component to be optimized independently, with the steel frame bearing the structural loads rather than requiring thick concrete.
2Strength
If concrete thickness is increased to meet strength requirements, then panel strength is improved, but thermal insulation performance deteriorates due to increased heat transfer
Solution Approach 1:
The composite structure combines concrete with dedicated insulation materials (such as foam board or fiberglass) positioned within the steel frame cavity. This allows the panel to meet strength requirements with thin concrete while the insulation layer provides thermal resistance to reduce energy loss through the building envelope.
Solution Approach 2:
Different materials are assigned different functions within the panel: concrete provides weather protection and fire resistance, steel provides structural strength, and insulation provides thermal resistance. This local optimization of material properties allows the panel to achieve multiple performance goals simultaneously.
3Strength
If traditional materials and methods are used, then structural integrity is maintained, but material costs and labor costs increase
Solution Approach 1:
The panel components (concrete slab, steel frame, insulation) are fabricated and assembled at an off-site manufacturing facility before being transported to the construction site. This preliminary assembly allows for efficient production using specialized equipment and controlled conditions, reducing both material waste and on-site labor costs while maintaining structural integrity.
Solution Approach 2:
Multiple building envelope components are merged into a single integrated prefabricated panel unit. The concrete slab, steel frame, insulation, and even finishing materials are combined into one assembly that is installed as a single unit, eliminating the need for separate installation steps and reducing overall material and labor costs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in lighter panels that meet energy codes, improve thermal insulation, and reduce material costs while maintaining structural integrity, enabling easier installation and reduced labor costs.
Implementation Method 1
a continuous insulation which fills at least 0.5 to 3 inches of the spacing between the concrete slab and the framing
Data Source
AI summary
Prefabricated building panels combine new and unexpected element dimensions and materials with the effect of reducing overall weight and depth while simultaneously improving panel performance such as thermal insulation. As compared to former panels, prefabricated building panels according to exemplary embodiments of the invention generally include thinner concrete slabs, wider separations between concrete and support framing, and new material choices for anchors connecting slabs with framing. Exemplary panels are compliant with energy codes such as the latest ASHRAE and IECC.