Pre-formed Header Assembly for Steel Stud Rough Opening
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Solution Overview
Problem
The delay in delivery of hollow metal door frames in building construction hinders the timely progression of steel stud wall installation, particularly affecting the completion of door headers, duct work, electrical, and sheet rock installations, and poses safety risks due to exposed jamb track ends.
Innovation Solution
A pre-formed header assembly is used to create a rough opening in a steel stud wall, allowing completion of installations like electrical, ducting, and drywall before the hollow metal door frame is installed, and is configured to be secured beyond the design location of the door frame, eliminating exposed jamb track ends and enhancing worker safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional steel stud construction waits for hollow metal door frame delivery before installing header and jamb track, then the door frame can be properly positioned, but construction progress is delayed and worker safety is compromised due to exposed jamb track ends
Solution Approach 1:
The header and jamb track are installed in advance before the hollow metal door frame is delivered. This preliminary action allows the rough opening to be framed and other construction activities to proceed without waiting for the door frame, thereby eliminating construction delays while maintaining proper positioning through the pre-installed header configuration
Solution Approach 2:
The header serves as an intermediary element that enables construction to proceed without the actual door frame. By installing the header and jamb track as temporary placeholders, the system allows duct work, electrical, and sheet rock installations to complete before the final door frame installation, resolving the conflict between early construction access and accurate door frame positioning
2Loss of time
If hollow metal door frames are delivered late, then inventory management is optimized, but construction completion is delayed and worker safety is reduced due to exposed jamb track ends
Solution Approach 1:
The header and jamb track are installed preliminarily before the door frame arrives, allowing the rough opening to be properly configured in advance. This eliminates the hazardous condition of exposed jamb track ends and enables workers to safely proceed with other construction activities without exposure to sharp or exposed metal edges
Solution Approach 2:
The invention converts the potential harm of late door frame delivery into a benefit by using the waiting period to complete other construction activities. The pre-installed header and jamb track system transforms the delayed door frame installation into an opportunity to finish duct work, electrical, and sheet rock installations first, while the exposed jamb track ends are eliminated through proper header configuration
3Manufacturing precision
If header is installed at the exact door frame location, then precise door positioning is achieved, but construction activities like duct work and electrical cannot proceed until door frame is installed
Solution Approach 1:
The door framing system is segmented into separate components: the header and jamb track are installed independently in advance, and the hollow metal door frame is installed separately later. This segmentation allows the rough opening to be framed with precise positioning elements in place while enabling other construction activities to proceed independently without waiting for the actual door frame installation
Solution Approach 2:
The header is installed preliminarily at the exact location where the door frame will eventually be positioned. This preliminary installation establishes the precise positioning reference points and structural support needed for accurate door frame installation, while simultaneously allowing other construction activities to proceed around and above the rough opening without interference
Data Source
AI summary
A pre-formed header assembly creates a rough wall opening for a metal door/frame, permitting completion of electrical, ducting, drywall, etc. prior to receiving/installing the door frame. The header is secured to first and second king studs at respective locations positioned beyond a desired door frame location. The header includes four different channels, one of which is utilized at two locations. The first channel has a first length to span between the king studs. The second channel has a second length, and the third channel a third length, which correspond to minimum dimensional requirements for completing the wall. The base of the second and third channels are each fixedly secured to the base of the first channel. The base of the fourth and fifth channels are fixedly secured to the first and second ends of the base of the first channel, respectively, substantially perpendicular thereto, for attachment to the king studs.