Footing Pad Structural Webs for Post Uplift Resistance
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Solution Overview
Problem
The construction industry faces challenges in achieving improved uplift resistance and efficient installation of footing pads for supporting posts and upright structures, particularly in areas prone to extreme weather or seismic activity.
Innovation Solution
A footing pad design featuring a base with structural webs and an uplift feature, which includes parallel walls with bores for securing posts, enhancing uplift resistance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional concrete or rock-filled holes are used for anchoring posts, then installation is straightforward, but uplift resistance is insufficient
Solution Approach 1:
The footing pad is segmented into multiple functional components: a base plate for ground contact, structural webs for load distribution, and an uplift feature with parallel walls for resisting upward forces. This segmentation allows each component to specialize in resisting specific types of loads, thereby improving overall uplift resistance without requiring a monolithic complex structure.
Solution Approach 2:
The uplift feature introduces a vertical dimension to uplift resistance by extending parallel walls upward from the base plate. This dimensional addition creates a mechanical interlock with the post that directly counters upward forces, transforming the traditional horizontal base-only approach into a three-dimensional anchoring system.
2Strength
If larger hole depth and diameter are used to improve anchoring, then uplift resistance increases, but installation becomes cumbersome and precise positioning becomes difficult
Solution Approach 1:
The invention extracts the anchoring function from the ground itself and concentrates it into a portable footing pad assembly. This allows the uplift resistance to be achieved through the pad's internal structure rather than relying on excavating large holes, thereby improving installation ease while maintaining strength.
Solution Approach 2:
The footing pad changes the parameters of the anchoring system by providing a large surface area base plate that distributes loads over a wider area, reducing the need for deep excavations. The structural webs and uplift feature are designed with optimized dimensions to achieve maximum resistance with minimal installation complexity.
3Reliability
If deeper and larger diameter holes are excavated for better anchoring, then uplift resistance improves, but installation time and complexity increase
Solution Approach 1:
The footing pad is pre-assembled with all anchoring components (base plate, structural webs, uplift feature) before installation. This preliminary preparation eliminates the need for on-site construction of complex anchoring systems, significantly reducing installation time while maintaining high anchoring reliability through the pre-engineered structure.
Data Source
AI summary
A footing pad for supporting a post or other upright structure includes a base. The base includes an upper surface and a lower surface opposite the upper surface. The base of the footing pad also includes a plurality of structural webs extending perpendicularly to a uniform height from the upper surface of the base. An uplift feature is rigidly coupled to the upper surface of the base and includes a first wall spaced substantially parallel to a second wall, with the first wall and the second wall extending substantially perpendicular from the upper surface. The uplift feature also includes a bore for receiving a fastener to secure the post. The footing pad may also include at least one positioning feature extending from the upper surface of the base and defining a bore for receiving a positioning tool.