Edge-Adapted Detectable Warning Tiles with Bottom Extensions
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Solution Overview
Problem
Existing detectable warning tiles, especially in platform applications, face issues of durability and tripping hazards due to improper installation and exposure to impacts at edges, leading to cracking and detachment.
Innovation Solution
The development of tiles with an extending member embedded within a concavity in the bottom side, which bonds with a substrate upon hardening, and a dual-component system with anchoring members forming an L-shaped corner at the platform edge, providing enhanced durability and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If warning tiles are attached to the top of a surface with screws or adhesives, then installation is faster and less expensive, but the tile creates a raised surface that becomes a tripping hazard and is less durable
Solution Approach 1:
The extending member is embedded within a concavity in the bottom side of the tile, creating a nested structure where the anchoring component is housed inside the tile body. This nesting allows the tile to be set in wet substrate with the extending member protruding to bond with the substrate, achieving both secure attachment and a level finished surface without requiring post-installation adjustments.
2Reliability
If warning tiles are set in wet concrete, then the tile achieves strong bond and level finished surface, but installation is more costly and time consuming
Solution Approach 1:
The extending member is pre-embedded in the concavity during tile manufacturing, so that when the tile is installed by setting it in wet substrate, the anchoring mechanism is already in place. This preliminary preparation eliminates the need for on-site drilling or complex anchoring procedures, reducing installation time and cost while maintaining strong bond strength.
3Strength
If the concavity perforates the top side of the tile, then the extending member can be embedded deeper, but this causes cracking and other problems
Solution Approach 1:
The concavity is designed to extend only partially through the tile thickness (no more than three quarters), creating a localized cavity that provides sufficient anchoring depth for the extending member while preserving the structural integrity of the tile. This localized modification avoids full perforation and the associated cracking problems.
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 ensures a strong bond between the tile and substrate, reducing cracking and detachment, and enhances durability against impacts, thereby improving the longevity and safety of detectable warning tiles in platform applications.
Implementation Method 1
an anchoring member and an extending member that bonds with a substrate, such as a cementitious material
Data Source
AI summary
Apparatus and processes that include a detectable warning tile having a top side with a plurality of protuberances forming a pattern or array and a second tile member disposed perpendicular to an edge of the detectable warning tile. The bottom side of both the detectable warning tile and the second tile member have at least one anchoring member embedded within a concavity in the bottom side, making the tile and tile member especially durable on platform edges.