Exterior Wall Drainage Channels With Fireblocking
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Solution Overview
Problem
Existing exterior wall assemblies struggle to effectively manage moisture and prevent fire propagation through internal void spaces, as current systems often prioritize one aspect over the other.
Innovation Solution
The development of exterior wall system assemblies and subassemblies that incorporate drainage features, such as wedges with sloped top sides and channels with water-resistant ribbons, combined with fireblocking features like fire-resistant materials and base forms, to address both moisture management and fire prevention simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drainage features are added to manage moisture, then moisture management is improved, but device complexity increases
Solution Approach 1:
The patent combines drainage features and fireblocking features into a single integrated wall assembly system. The drainage mat with channels integrates with the fireblocking board to create a unified structure that performs both moisture management and fire prevention functions simultaneously, reducing overall system complexity despite adding functionality.
Solution Approach 2:
The wall assembly components are designed to perform multiple functions. The drainage mat serves both as a moisture collection system and a fireblocking barrier. The integrated design allows single components to fulfill multiple roles, improving reliability without proportionally increasing complexity.
2Object-affected harmful factors
If fireblocking features are added to prevent fire propagation, then fire safety is improved, but moisture management capability deteriorates
Solution Approach 1:
The patent merges fireblocking boards with drainage mats into an integrated assembly where both functions coexist. The fireblocking board is positioned to create fire barriers while the drainage mat with its channels remains functional for moisture collection and evacuation, allowing both fire safety and moisture management to operate simultaneously without interference.
Solution Approach 2:
The wall assembly is segmented into distinct functional layers - the drainage mat with channels for moisture management and the fireblocking board for fire prevention. This segmentation allows each component to optimize its specific function while working together in an integrated system, preventing either function from compromising the other.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These integrated systems effectively manage moisture by directing it out of the wall assembly through drainage channels and weep tubes, while also inhibiting fire propagation by creating a continuous fire-resistant barrier within the wall assembly.
Implementation Method 1
a waterproof membrane aligned on the top side of the wedge
Implementation Method 2
a channel disposed on the top side of the wedge, wherein the channel comprises a channel outlet, and wherein the channel outlet is aligned proximal to the top front edge and distal to the top rear edge
Implementation Method 3
a fireblocking base form aligned below the wedge, wherein the fireblocking base form comprises a fire-resistant material
Data Source
AI summary
Exterior wall system assemblies, exterior wall system component subassemblies, and exterior wall system components that incorporate drainage features and fireblocking features are disclosed. The drainage features can include a channel or conduit assembly by which moisture that collects within concealed spaces of the respective exterior wall system assembly can migrate via gravity from the concealed spaces out through the exterior wall system assembly, wall panel, or wall panel system to the outside of the building. The exterior wall system assemblies, exterior wall system component subassemblies, and exterior wall system components include fireblocking features that can inhibit the propagation of fire through the concealed spaces of the exterior wall system assembly.