Balcony Railing Anchor with Segmented Mounting Plate
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Solution Overview
Problem
Conventional railing anchors on wooden balconies with lightweight concrete tread surfaces are prone to damage due to the 'missile' protrusion, which interferes with construction material movement and maintenance, leading to costly repairs.
Innovation Solution
A railing anchor arrangement featuring a metal plate with threaded holes on the wooden deck, secured with lag bolts and studs, covered by a moisture barrier, allowing for concrete pouring and subsequent mounting of an aluminum railing post, with shields and isolation barriers to prevent galvanic action and water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional railing anchors with affixed posts are mounted to the deck as missiles before concrete pouring, then the railings have a strong base anchored to the wooden support and deck, but the missile protrusions cause collisions during construction material movement and debris removal, dislodging the anchors and damaging the water-tight seal
Solution Approach 1:
The railing anchor system is divided into separate components: the mounting plate is installed first and secured to the deck, then the post is attached separately to the mounting plate after concrete pouring. This segmentation eliminates the need for large pre-protruding missiles while maintaining anchoring strength.
Solution Approach 2:
The mounting plate is installed in advance and secured to the wooden deck before concrete pouring, but the post attachment is deferred until after concrete curing. This preliminary action allows the anchor base to be secure without creating dangerous protrusions during construction.
2Ease of manufacture
If the wooden support and deck are exposed to water ingress, then the construction is simpler without extensive moisture barriers, but penetrating water causes early failure of the wooden components
Solution Approach 1:
A moisture barrier is introduced as an intermediary layer between the wooden deck and the concrete tread. This barrier prevents water ingress to the wood while allowing the concrete to provide the required structural support and finish.
Solution Approach 2:
A flexible moisture barrier membrane is applied over the wooden deck to create a water-tight seal. This thin film protects the wood from water damage while maintaining the structural integrity and simplicity of the construction.
3Ease of operation
If steel parts are placed adjacent to aluminum parts in the railing system, then the railing components can be easily assembled with different materials, but galvanic action occurs between the different metals causing corrosion
Solution Approach 1:
An isolation barrier is introduced as an intermediary between steel and aluminum components to prevent direct contact. This barrier eliminates galvanic action while allowing the system to utilize the advantages of both steel (strength) and aluminum (light weight, durability).
Solution Approach 2:
A non-conductive isolation barrier creates an inert environment between dissimilar metals, preventing the electrochemical reactions that cause galvanic corrosion. This allows different metals to be used together without compromising the system's reliability.
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 provides a durable, cost-effective railing support that minimizes damage from construction activities and ensures a watertight seal, reducing repair costs and enhancing safety by reducing the risk of dislodgment and water ingress.
Implementation Method 1
A moisture barrier covers the wooden deck and seals to the first metal plate. The moisture barrier can be a waterproof membrane.
Implementation Method 2
At least one lag bolt extends downward from the metal plate through the wooden deck and is secured in the wooden support to secure the metal plate onto the wooden deck and the wooden support.
Implementation Method 3
The threaded studs that extend upward from the holes in the first metal plate are preferably mounted by mating stud threads to threads in the holes of first metal plate with a thread locker adhesive where the studs mate with the first metal plate.
Implementation Method 4
Places where a steel part is adjacent an aluminum part are provided with an isolation barrier, to prevent galvanic action between the different metals.
Implementation Method 5
A shield preferably surrounds each stud between the metal plates to prevent contact of the concrete with the threads of the studs. The shield may be a polyvinyl chloride sleeve.
Data Source
AI summary
A balcony railing anchor arrangement for a balcony that has a wooden support and a wooden deck on the wooden support. A first metal plate on the wooden deck has threaded holes, and a moisture barrier covers the wooden deck. A lag bolt extends downward from the metal plate through the wooden deck and secured in the wooden support to secure the metal plate onto the wooden deck and the wooden support. Threaded studs extend upward from the holes in the first metal plate. Concrete can be poured on the moisture barrier and the first metal plate and a second metal plate with a post for a railing on the balcony can be mounted atop the concrete by aligning holes in the second metal plate with the studs.