Flush-Mounted Attic Egress Hatch Panel Concealed in Roof Decking
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Solution Overview
Problem
Conventional emergency egress systems for attics, such as roof scuttles, are unsightly, prone to dislodgment, and susceptible to leakage, making them inadequate for residential structures, especially in harsh weather conditions, and can trap individuals during emergencies like floods or fires.
Innovation Solution
An emergency egress system comprising a hatch panel made of the same material as roof decking, securely mounted within a frame, allowing roofing materials to be applied uniformly, with a gap for cutting tools to deploy the panel, providing a hidden and reliable exit route.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional roof scuttles are used for emergency egress, then a means of exit is provided, but the system is unsightly, prone to dislodgment, and susceptible to leakage
Solution Approach 1:
The hatch panel is made of the same material as the roof decking (wooden planks), making it visually indistinguishable from the surrounding roof surface. This homogeneity eliminates the aesthetic disadvantage and reduces the risk of dislodgment while maintaining the emergency egress function.
Solution Approach 2:
The hatch panel is integrated flush with the roof decking surface, merging the egress system with the roof structure. This integration eliminates the projection that causes dislodgment in harsh weather and reduces leakage points while preserving the emergency exit capability.
2Shape
If the hatch panel is made of the same material as roof decking, then the system blends with roofing material, but the panel must be securely mounted to prevent accidental opening
Solution Approach 1:
The mounting frame is divided into multiple components: horizontal and vertical members forming a grid pattern, with separate mounting brackets and fastening mechanisms. This segmentation allows for secure attachment while maintaining a flush, aesthetically pleasing integration with the roof decking.
Solution Approach 2:
The hatch panel is pre-mounted within the mounting frame during manufacturing, with all fastening mechanisms and security features already in place. This preliminary action ensures secure mounting while allowing the panel to be easily installed and removed when needed, maintaining both aesthetic blending and reliability.
3Ease of operation
If a gap is provided between the hatch panel and mounting frame, then cutting tools can be inserted for deployment, but the gap may allow leakage or structural weakness
Solution Approach 1:
The gap between the hatch panel and mounting frame is provided only at specific localized positions where cutting tools can be inserted for deployment. The gap is strategically positioned and sized to facilitate tool insertion while minimizing the total open area that could allow leakage or structural weakness.
Solution Approach 2:
The gap acts as an intermediary channel that allows cutting tools to penetrate the roofing material and reach the hatch panel for deployment. The gap is controlled and positioned to serve this specific function while being minimized to reduce the risk of leakage and maintain structural integrity.
Data Source
AI summary
An egress system for an interior space such as an attic covered by roof decking. In one embodiment, the egress system comprises a steel frame adapted for installation within an opening formed in the roof decking between two adjacent roof joists. A hatch panel is releasably secured within the opening defined by the frame by means of a plurality of removable pins. In accordance with one aspect of the invention, an upper surface of the hatch panel is substantially flush with the upper surface of the roof decking, allowing for the uniform application of roofing material, such as composition shingles, overtop the roof decking and the hatch panel, thereby concealing the presence of the egress system beneath the roofing material. Deployment of the egress system is accomplished with the use of a cutting implement inserted from the underside of the egress system inside the interior space into a gap maintained around the periphery of the hatch panel when secured within said frame. The cutting implement cuts or perforates the roofing material sufficiently to permit at least partial release of the hatch panel from the frame, allowing egress from the interior space defined by the frame.