Pivoting Rooftop Rigging Arm for Sloped Roof Eave Access
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Solution Overview
Problem
Conventional rooftop rigging support systems are difficult to use on buildings with sloped roofs, as they cannot support the weight and require novel structures for suspended maintenance tasks.
Innovation Solution
A rooftop rigging support system with a rigid, non-articulating arm that extends over and under the eave of a building, anchored to the roof, allowing for manual pivotal movement between deployed and withdrawn positions, and featuring a suspension line and lifeline for safely suspending loads underneath the eave.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional building davits are mounted to the roof, then maintenance personnel can be suspended down alongside the building's exterior wall, but the system cannot be used on sloped roofs
Solution Approach 1:
The arm is made manually pivotal, allowing it to be positioned at different angles to accommodate both sloped and flat roofs. The arm can be adjusted to extend outward over the eave and back inward underneath the eave, adapting to various roof geometries while maintaining load-bearing capability through controlled positioning.
Solution Approach 2:
The arm configuration transitions from a simple horizontal extension to a three-dimensional structure that extends outward and then curves back inward underneath the eave. This spatial reconfiguration allows the system to adapt to sloped roofs by utilizing vertical and horizontal dimensions together, rather than relying solely on horizontal placement.
2Ease of operation
If the arm extends outward over the eave and back inward underneath the eave, then the distal end can be positioned underneath the eave for load suspension, but the structure becomes more complex
Solution Approach 1:
The arm is divided into distinct functional segments: a proximal end for anchoring to the roof, a middle section that extends outward over the eave, and a distal end that curves back inward underneath the eave. This segmentation allows each portion to perform its specific function while simplifying the overall deployment process through manual pivotal movement.
3Ease of manufacture
If the arm is manually pivotal between deployed and withdrawn positions, then the system can be easily stored and deployed, but the connection point must handle dynamic loading
Solution Approach 1:
The anchoring system is designed with sufficient strength capacity to handle the dynamic loads generated during pivotal movement between deployed and withdrawn positions. The anchor point is positioned and constructed to accommodate the varying force vectors that occur during arm movement, ensuring structural integrity is maintained throughout the full range of motion.
Data Source
AI summary
In at least one embodiment, a rooftop rigging support system mounts to a roof a building for suspending a load under an eave of the building. In some embodiments, the rooftop rigging support system comprises an arm that extends outward over the eave and then back inward underneath the eave. In some embodiments, the arm is a generally rigid, non-articulating structure. In some embodiments, the arm can be manually pivoted between a deployed position reaching under the eave and a withdrawn position extending above the roof.