Sub-Surface Roof Anchor With Adjustable Bolt for Sloped Roofs
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Solution Overview
Problem
Traditional commercial roof anchors face challenges in secure attachment to sloped and highly visible residential and multi-family roofing structures, which differ from commercial setups, requiring improved low-profile and strong attachment solutions for safe fall protection.
Innovation Solution
The development of sub-surface fall protection anchors with an anchor point base plate and upwardly extendible adjustment bolt for secure attachment to various substrates like concrete decks, wood framing, and structural steel, using bolts, nails, or industrial-strength glue, along with a backer plate and removable cover plate for safety and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional Commercial Roof Anchors are used with base plates attached to the top surface of substrates, then they can provide fall protection attachment points, but they cannot be securely installed on sloped and varied substrates in residential and multi-family construction
Solution Approach 1:
Instead of attaching the base plate to the top surface of the substrate as in traditional CRAs, this invention inverts the approach by anchoring the base plate to the supporting structure (joist, truss, or beam) below the substrate. The base plate is positioned beneath the substrate and secured to the structural member, allowing the anchor to be installed on sloped and varied substrates while maintaining secure attachment through the structural support.
2Length of stationary object
If the riser dimension is lengthened to accommodate rigid insulation, then the serviceable portion above the finished roofing membrane is preserved, but the anchor becomes unsuitable for low-profile installation on residential roofs
Solution Approach 1:
This invention moves the anchor installation from a vertical dimension (above the roof surface) to a horizontal/different spatial dimension (beneath the substrate). By positioning the base plate below the substrate and securing it to the supporting structure, the anchor achieves a low-profile installation suitable for residential roofs while still accommodating insulation thickness variations through the adjustment mechanism.
3Ease of operation
If traditional CRAs require base plate attachment to the top surface of substrate, then installation is straightforward on commercial roofs, but installation becomes difficult and unsafe on sloped residential substrates
Solution Approach 1:
By inverting the installation approach to secure the base plate to the supporting structure below rather than attaching to the top surface, the invention enables safe and reliable installation on sloped residential substrates. The supporting structure provides a stable, load-bearing attachment point that is not affected by substrate slope or thickness variations.
Data Source
AI summary
Sub-surface roof attachment systems, methods, etc., configured for anchoring a personal fall protection anchorage device to a roof, the sub-surface roof attachment system comprising an anchor point base plate sized and configured for attachment to an upper surface of a support substrate, wherein the anchor point base plate is configured to immobily hold the personal fall protection anchorage device to the support substrate adequate for safe fall protection for a worker, the anchor point base plate further comprising an upwardly extendible adjustment bolt, an upper surface of the upwardly extendible adjustment bolt having a cavity therein configured to immobily receive and hold the personal fall protection anchorage device.