Cantilevered Deck System with Moment-Resisting Frame
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Solution Overview
Problem
Conventional residential deck construction often leads to moisture intrusion issues and obstructs space beneath the deck due to ledger boards and columns, while also lacking architectural appeal.
Innovation Solution
A free-standing cantilevered deck system with a caisson foundation and moment-resisting frame that extends from the foundation, eliminating the need for columns and allowing for a more open space beneath, while providing a visually appealing architectural feature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ledger board construction is used, then deck attachment to structure is achieved, but moisture intrusion occurs and architectural appeal is reduced
Solution Approach 1:
The patent removes the ledger board component entirely and replaces it with a free-standing cantilevered frame system. This extraction of the problematic ledger board eliminates the moisture intrusion issue while maintaining deck attachment functionality through the frame's moment-resisting connection to the foundation.
Solution Approach 2:
The deck system is segmented into distinct functional components: a foundation, a cantilevered frame with moment-resisting connection, and a deck surface. This segmentation allows each component to be optimized independently, with the frame specifically designed to resist moments and prevent moisture intrusion pathways.
2Strength
If columns are used for beam support, then structural support is achieved, but space beneath deck is obstructed
Solution Approach 1:
The patent eliminates the columns that obstruct space beneath the deck by using a cantilevered frame system that derives support from the foundation and moment-resisting connection, thereby creating unobstructed space below the deck level.
Solution Approach 2:
The frame is designed to resist moments in a specific dimensional orientation, allowing the deck to cantilever away from the structure in one direction while maintaining structural integrity through the moment-resisting connection, thus eliminating the need for vertical columns.
3Stability of the object's composition
If conventional deck construction is used, then structural stability is achieved, but architectural appeal is reduced
Solution Approach 1:
The frame is designed with dynamic moment-resisting capabilities that allow it to adapt to loading conditions while maintaining structural stability. The cantilevered configuration provides architectural appeal through its visual characteristics, while the moment-resisting connection ensures structural integrity.
Solution Approach 2:
The cantilevered frame configuration creates an asymmetric, visually appealing structure that departs from conventional symmetric deck constructions. The moment-resisting connection provides the necessary structural stability while the cantilevered geometry enhances architectural appeal.
Data Source
AI summary
A deck for positioning adjacent a structure may include a foundation configured for positioning relatively proximate to the structure, a frame extending from the foundation, and a deck system arranged about and supported by the frame, wherein the deck is adapted for positioning adjacent the structure and for cantilevering away from the structure.