Prefabricated Demising Wall With Integrated Fire Sprinkler Conduits
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Solution Overview
Problem
Conventional construction methods for buildings are inefficient and wasteful due to the separation of design and construction processes, leading to costly and time-consuming in-field construction of demising walls, lack of acoustical, thermal, and waterproof separation between units, and inadequate fire protection and energy efficiency.
Innovation Solution
A prefabricated demising wall assembly comprising non-combustible substrate panels connected by metal studs, with hanger elements for finish panels and a fire sprinkler pipeline, designed to provide acoustical, thermal, and moisture protection, and meet fire and energy codes, allowing for offsite assembly and efficient on-site installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional in-field construction methods are used for demising walls, then construction can be performed on-site with traditional linear sequencing, but construction time is extended and material waste increases
Solution Approach 1:
The demising wall assembly is pre-assembled offsite including substrate panels, metal studs, fire sprinkler pipelines, and electrical conduits before transportation to the construction site. This preliminary assembly of wall components eliminates time-consuming on-site construction activities while maintaining the ability to install complete wall sections rapidly during construction
Solution Approach 2:
The building construction process is divided into modular demising wall assemblies that can be independently manufactured and transported. Each wall assembly functions as a discrete unit containing integrated systems (structural, fire protection, electrical), allowing parallel production and streamlined on-site installation that accelerates overall construction productivity
2Ease of manufacture
If conventional in-field construction methods are used for demising walls, then traditional construction processes can be followed, but material waste and construction costs increase
Solution Approach 1:
Multiple building systems are merged into a single integrated demising wall assembly, including structural elements (substrate panels and metal studs), fire protection (sprinkler pipelines), and electrical systems (conduits). This consolidation eliminates the need for separate installation processes and reduces material waste by coordinating all components during offsite manufacturing
Solution Approach 2:
All wall components are preliminarily assembled offsite with precise material placement and coordination, eliminating the need for on-site cutting, fitting, and adjustment that typically generates material waste. The pre-assembly process ensures optimal material utilization while maintaining construction simplicity through standardized installation procedures
3Device complexity
If demising walls are constructed with basic structural components only, then construction simplicity is maintained, but acoustical, thermal, and fire protection performance is insufficient
Solution Approach 1:
The demising wall assembly is designed as a multi-functional system where a single integrated structure provides structural support, acoustical separation, thermal insulation, moisture protection, and fire safety. The substrate panels and metal studs serve both structural and separation functions, while integrated sprinkler systems provide fire protection without requiring separate wall constructions
Solution Approach 2:
The wall assembly employs composite construction combining non-combustible substrate panels, metal studs, fire-resistant insulation materials, and protected piping systems. This composite approach achieves superior fire protection and thermal performance while maintaining construction efficiency through pre-fabricated integrated components that meet multiple building code requirements simultaneously
4Reliability
If demising walls are constructed with integrated fire sprinkler pipelines, then fire protection is improved, but installation complexity and on-site assembly time increase
Solution Approach 1:
Fire sprinkler pipelines are merged with the demising wall structure during offsite manufacturing, positioning fire protection components within the wall assembly framework. This integration eliminates separate fire system installation while maintaining reliable fire protection, as the pipelines are pre-routed through designated channels and connected to wall-mounted sprinkler heads
Solution Approach 2:
Fire sprinkler pipelines and related components are preliminarily installed and tested within the demising wall assembly during offsite fabrication. This preliminary action ensures fire protection reliability is achieved before site installation, while the standardized integration methods keep on-site complexity minimal, requiring only connection to building water supplies
Data Source
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AI summary
A prefabricated demising wall assembly comprising two substrate panels each with an interior and exterior surface, the substrate panels configured to span between a floor and a ceiling of a building unit; a plurality of metal studs connecting the interior surfaces of the two substrate panels, wherein the plurality of metal studs define a space between the substrate panels; a fire sprinkler pipeline between the two substrate panels, wherein at least some of the plurality of metal studs have an aperture accommodating the fire sprinkler pipeline through an interior of the demising wall assembly; and a plurality of hanger elements operably attached to the exterior surfaces of the two substrate panels, wherein the plurality of hanger elements are configured to connect to a plurality of removable finish panels.