Composite Wall System Stand-Off Fastener Installation
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Solution Overview
Problem
Existing composite floor systems are time-consuming and difficult to install, requiring steel beams in wall structures and powder-driven fasteners, which limits erectability and economy while maintaining load-bearing capacity.
Innovation Solution
A building structure utilizing stand-off fasteners with self-drilling and thread-forming capabilities, encapsulated in a cementitious wall structure, which eliminates the need for steel beams and powder-driven fasteners, allowing for independent spacing of wall studs and improved load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel beams and powder-driven fasteners are used in composite floor systems, then load-bearing capacity is maintained, but installation time increases and erectability deteriorates
Solution Approach 1:
The patent removes steel beams and powder-driven fasteners from the composite floor system, replacing them with a simplified assembly using self-drilling self-tapping screws that directly attach metal decking to wall studs. This extraction of unnecessary components reduces installation complexity and time while maintaining structural integrity through the cementitious material bonding the decking to the wall structure.
Solution Approach 2:
The self-drilling self-tapping screws perform multiple functions automatically: they drill through the metal decking, form threads in the wall stud, and secure the decking without requiring separate drilling, threading, or fastening operations. This self-service capability eliminates the need for powder-driven fasteners and steel beams, significantly reducing installation time and improving erectability.
2Strength
If steel beams are installed in wall structures, then load distribution is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent eliminates steel beams from the wall structure by using wall studs with integrated load-bearing capabilities. The self-drilling self-tapping screws directly attach the metal decking to the wall studs, which are positioned to optimize load distribution. This removes the intermediate steel beam component, simplifying the structural system while maintaining effective load transfer to the foundation.
Solution Approach 2:
The wall studs serve multiple functions: they provide structural support, distribute loads from the floor system, and serve as direct attachment points for the metal decking via self-drilling self-tapping screws. This multi-functionality replaces the specialized steel beams that previously handled load distribution, reducing device complexity while maintaining structural performance.
3Strength
If powder-driven fasteners are used, then secure attachment is achieved, but installation safety and ease of operation worsen
Solution Approach 1:
The self-drilling self-tapping screws automatically drill through the metal decking and form threaded connections in the wall studs without requiring separate drilling or threading operations. This self-service mechanism eliminates the need for hazardous powder-driven fasteners, making installation safer and easier while maintaining secure attachment through the threaded connection and cementitious material bonding.
Solution Approach 2:
The patent replaces the explosive mechanical system of powder-driven fasteners with a screw-based mechanical system that uses rotational force to create threaded connections. This substitution eliminates the hazards of powder-actuated tools while achieving equivalent or superior attachment security through the self-drilling and self-tapping actions that create firm mechanical interlocking between the decking and wall studs.
4Stability of the object's composition
If wall studs are positioned and spaced according to traditional methods, then structural alignment is maintained, but adaptability and flexibility are reduced
Solution Approach 1:
The patent enables flexible positioning and spacing of wall studs by changing the attachment mechanism from rigid steel beam connections to self-drilling self-tapping screws that can accommodate varying stud locations. The cementitious material provides bonding that maintains structural integrity regardless of stud spacing, allowing adaptation to different architectural requirements while preserving structural alignment through the flexible attachment system.
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
The solution enables rapid, safe, and error-reduced installation of composite floor systems with enhanced erectability and economy, while maintaining or exceeding load-bearing capacity, and allows for flexible positioning of wall studs.
Implementation Method 1
the lower portion comprises a self-drilling end portion and an adjacent thread-forming portion
Implementation Method 2
the lower portion comprises a self-drilling end portion and an adjacent thread-forming portion
Implementation Method 3
A cementitious wall structure is formed above the upper portion of the support structure with the upper portions of the stand-off fasteners encapsulated in the cementitious wall structure
Data Source
AI summary
A building structure comprising a support structure having upper portion extending to adjacent a floor structure above the support structure and adapted to receive stand-off fasteners there along, a plurality of stand-off fasteners each having a lower portion and an upper portion, where the lower portion of the stand-off fasteners comprises a self-drilling end portion and an adjacent thread-forming portion and, when installed into the upper portion of the support structure, at least a portion of the upper portion of each stand-off fastener extends significantly above the upper portion of the support structure, a cementitious wall structure formed above the upper portion of the wall structure with the upper portions of the stand-off fasteners encapsulated in the cementitious wall structure.