Prefabricated Wall Assembly Weather Protection via Segmentation

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Solution Overview

Problem

Existing prefabricated wall assemblies face challenges in providing cost-effective and adequate weather protection, especially for energy-efficient structures, due to the interaction of different materials with exterior environmental conditions.

Innovation Solution

A wall assembly comprising recessed cold-pressed steel stud assemblies, ProFab™ board, mesh, coatings, and structural building panels, which are prefabricated and assembled to provide comprehensive weather protection by embedding these elements within the wall structure, ensuring protection from temperature, moisture, wind, and other environmental factors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional embedded weather protecting elements are used in prefabricated wall assemblies, then weather protection is provided, but cost increases and protection adequacy may be insufficient

Engineering Contradiction:

Improveweather protection adequacyVSAvoidcost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The wall assembly is divided into modular components including separate sheathing layers, insulation sections, and window assemblies that can be manufactured independently and assembled prefabricatedly, allowing for standardized production at lower costs while maintaining protection effectiveness

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs composite construction combining wood framing, engineered wood sheathing (OSB), insulation materials, and weather-resistant barriers in layered configurations that provide comprehensive weather protection through material synergies rather than relying on single expensive protective elements

Inventive Principle:

Principle #40Composite materials

2Productivity

If prefabricated wall assemblies are manufactured at a separate location, then construction time at the site is reduced and site space is preserved, but weather protection challenges arise due to material interactions with exterior environmental conditions

Engineering Contradiction:

Improveconstruction timeVSAvoidexterior environmental exposure

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Weather protection elements including sheathing, insulation, and weather-resistant barriers are pre-installed and pre-assembled at the manufacturing location before the wall sections are shipped to the construction site, ensuring protection is already in place before exterior exposure occurs during installation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent utilizes weather-resistant barrier membranes and sheathing layers that act as flexible protective shells, conforming to the wall assembly structure while providing moisture and environmental protection during both transportation and installation phases

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS20240240454A1Wall assembly for building structures and methods for manufacturing thereof

Publication Date: 2024.07.18 PROFAB CONSTR LLC

AI summary

A wall assembly including: a plurality of stud assemblies, each of the stud assemblies including a plurality of metal studs, the stud assemblies being spaced apart from each other and forming a window opening therebetween; a sill wedge connected between the stud assemblies and forming a lower edge of the window opening; and a board layer extending around a periphery of the window opening and being attached to the stud assemblies.