Low Profile Pullout Resistant Pintle Veneer Tie
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anchoring systems for cavity walls with brick or stone veneer fail to provide a high-strength, pullout-resistant connection between the veneer tie and the receptor, especially in structures with larger cavities and increased insulation, which are prone to lateral forces such as wind and seismic activity.
Innovation Solution
A low-profile, high-strength pullout-resistant pintle veneer tie system with compressively reduced and patterned ribbon pintles that securely engage with a wall anchor, restricting movement and enhancing tensile and compressive strength, suitable for both masonry block and dry wall constructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cavity wall insulation thickness is increased to meet energy code requirements, then the thermal insulation performance is improved, but the span distance between inner and outer wythes increases making the anchoring system less reliable
Solution Approach 1:
The anchoring system is segmented into multiple components: the L-shaped anchor with reception leg, the separate reinforcement wire, and the pintle tie. This segmentation allows each component to be optimized for its specific function while working together to span larger cavity distances reliably.
Solution Approach 2:
The anchor utilizes three-dimensional spatial configuration with the reception leg extending perpendicular to the bed joint face, creating a multi-dimensional anchoring structure that effectively spans larger cavity widths while maintaining connection reliability.
2Ease of manufacture
If the bed joint height is kept at traditional 3/8-inch to maintain construction practices, then the ease of manufacture is improved, but the anchoring system cannot provide sufficient pullout resistance for high-span applications
Solution Approach 1:
The L-shaped anchor extends in multiple dimensions, with the reception leg projecting perpendicular from the bed joint face into the cavity space. This three-dimensional configuration allows the anchor to achieve sufficient pullout resistance without requiring increased bed joint height, maintaining traditional 3/8-inch construction while providing enhanced anchoring capability for high-span applications.
3Strength
If multiple separate components are used for the anchoring system to achieve high strength, then the strength is improved, but the device complexity increases making installation more difficult
Solution Approach 1:
The L-shaped anchor and reinforcement wire are merged into a single integrated component, eliminating the need for separate anchor and reinforcement elements. This merging maintains the high strength required for high-span applications while simplifying the installation process by reducing the number of components that need to be handled and assembled.
4Ease of operation
If the pintle tie uses traditional wire configuration to simplify installation, then the ease of operation is improved, but the pullout resistance at the pintle-receptor junction is insufficient
Solution Approach 1:
The pintle tie features a localized enlarged portion that concentrates strength at the critical pintle-receptor junction. This local quality enhancement provides superior pullout resistance at the connection point while maintaining the overall simplicity of the wire tie configuration for ease of installation.
Solution Approach 2:
The pintle tie undergoes cold-working to reduce its height and increase its strength. This parameter change transforms the wire dimensions and mechanical properties, creating a low-profile, high-strength component that provides enhanced pullout resistance while maintaining installation simplicity.
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 system provides enhanced resistance to pullout and movement, maintaining structural integrity under high wind and seismic loads while simplifying installation and reducing the number of components, thus meeting stringent building code requirements.
Implementation Method 1
The wire formative insertion portion for disposition within the outer wythe, is compressively reduced in height by the cold-working thereof
Data Source
AI summary
A high-strength low profile pullout resistant pintle and anchoring system employing the same is disclosed. The modified veneer tie utilizes ribbon pintles formed from a wire formative construct that is cold-worked with the resultant body having substantially semicircular edges and flat surfaces therebetween. The edges are aligned to receive compressive forces transmitted from the outer wythe. The ribbon pintles hereof, when part of the anchoring system, interengage with receptor portions of a wall anchor and are dimensioned to preclude significant veneer tie movement and to preclude pullout. The insertion portion of the veneer tie is compressed and patterned to ensure a secure hold within the bed joint.