Fastening Plate Assembly Wind Uplift Resistance
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Solution Overview
Problem
Conventional fastening plate assemblies for securing construction boards to roof decks face challenges in providing adequate wind uplift resistance, as they require numerous fasteners and precise placement to prevent weak points and potential failure under wind forces.
Innovation Solution
A fastening plate assembly comprising a plurality of fastening plates with connectors extending between them, ensuring proper spacing and increased wind uplift resistance by distributing forces effectively across the construction board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large number of fastening plates and fasteners are used to secure construction boards, then wind uplift resistance is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent combines multiple fastening plates into a single integrated fastening plate assembly that functions as one unit. This assembly includes a first fastening plate, a second fastening plate, and a connector that links them together, allowing the entire assembly to be installed as a single component rather than multiple separate fasteners.
Solution Approach 2:
The fastening plate assembly is segmented into distinct functional components: a first fastening plate with a first opening, a second fastening plate with a second opening, and a connector with linking portions. This segmentation allows each component to serve its specific function while maintaining overall structural integrity and wind uplift resistance.
2Reliability
If fastening plates are spaced closely to prevent weak points, then reliability is improved, but installation time and labor increase
Solution Approach 1:
The fastening plate assembly is pre-manufactured with the correct spacing between the first and second fastening plates. The connector is pre-attached to link the two plates at the proper distance, eliminating the need for installers to measure and space individual fastening plates during installation. This preliminary preparation ensures proper spacing for reliability while reducing installation time.
3Strength
If precise placement of fastening plates is required to avoid weak points, then wind uplift resistance is improved, but manufacturing precision and installation skill requirements increase
Solution Approach 1:
The correct placement and spacing of fastening plates is predetermined during manufacturing of the fastening plate assembly. The connector is designed with specific dimensions that ensure the first and second fastening plates are positioned at the optimal spacing for wind uplift resistance. This eliminates the need for installers to exercise judgment or precision in spacing.
Solution Approach 2:
The fastening plate assembly is designed to self-position and self-align during installation. The connector and fastening plates are configured so that the assembly naturally settles into the correct position and orientation when installed, ensuring proper placement without requiring high skill levels or precise measurement by the installer.
4Strength
If numerous fastening plates are used to cover large construction boards, then wind uplift resistance is improved, but ease of operation during installation deteriorates
Solution Approach 1:
Multiple fastening plates that would traditionally need to be installed separately are merged into a single integrated assembly. The first fastening plate, second fastening plate, and connector form one unit that is installed in a single operation, dramatically simplifying the installation process while maintaining the wind uplift resistance provided by multiple distributed fastening points.
Data Source
AI summary
A roofing system includes a construction board positioned over a roof deck and a plurality of fastening plates positioned on a top surface of the construction board. At least one connector extends between two of the plurality of fastening plates and is positioned on the top surface of the construction board. The construction boards may be insulation or cover boards, and in certain embodiments may be polyisocyanurate boards. Fasteners are driven through the fastening plates and the construction boards and into an underlying roof deck to secure the construction boards in place.