Self-aligning Corner Bead for Fireproofing Structural Steel
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Solution Overview
Problem
Existing corner beads for fireproofing structural steel require skilled installation to ensure accurate alignment and thickness of fireproofing material, often resulting in inaccuracy and difficulty in achieving uniform thickness, especially at corners.
Innovation Solution
A self-aligning corner bead made of welded wire fabric, bent into an obtuse V-shape with pre-determined width and angle, allowing automatic alignment and uniform thickness distribution, featuring a flexible mesh for easy attachment and a rigid screed edge for forming a roughened surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional v-shaped corner bead with adjustable legs is used, then the corner bead can be attached to the steel member, but the alignment with adjacent surfaces is difficult and requires great skill to achieve accurate fireproofing thickness
Solution Approach 1:
The corner bead is pre-formed with legs of specific lengths and angles during manufacturing, eliminating the need for on-site adjustment. The legs are cut to predetermined lengths and bent at precise angles to ensure proper alignment with adjacent surfaces and accurate fireproofing thickness without requiring installer skill for adjustment.
Solution Approach 2:
The invention changes the parameters of the corner bead by providing multiple legs with different lengths and angles tailored to specific structural configurations. Each leg is designed with predetermined dimensions to automatically achieve the correct alignment and thickness gauge when installed, transforming the adjustable parameter system into a fixed parameter system optimized for specific applications.
2Adaptability or versatility
If the distance between legs of the corner bead is adjusted to establish correct fireproofing thickness, then the thickness can be customized, but the alignment becomes difficult and requires great skill
Solution Approach 1:
The corner bead is manufactured with legs of specific lengths and angles predetermined for the application. The distance between legs and the angles are fixed during production to provide the exact thickness gauge needed, eliminating on-site adjustment requirements while maintaining adaptability through different pre-configured leg arrangements.
Solution Approach 2:
The corner bead is divided into multiple legs, each with specific functions and predetermined dimensions. This segmentation allows each leg to be optimized for its specific role in achieving proper alignment and thickness, with different leg configurations available for different structural scenarios.
3Adaptability or versatility
If a corner bead with adjustable legs is used, then the device can accommodate different configurations, but the installation process is complex and time-consuming
Solution Approach 1:
The corner bead is pre-assembled with all legs positioned and secured at predetermined angles and distances during manufacturing. This preliminary configuration eliminates the need for on-site adjustment and assembly operations, allowing installers to simply attach the pre-configured unit to the steel member, dramatically reducing installation time while maintaining configuration adaptability through different pre-set designs.
Solution Approach 2:
Different corner bead models are manufactured with specific parameter sets (leg lengths, angles, spacing) optimized for different structural configurations. This allows the system to maintain versatility across applications while each individual unit requires no adjustment, speeding up installation.
Data Source
AI summary
A self-aligning corner bead for fireproofing structural steel, having a strip of welded wire fabric cut to the appropriate width for the fireproofing thickness and bent longitudinally to form an obtuse V-shaped device is disclosed. A plastic nosing is installed along one edge. A method of finishing the corners for fireproofing of structural steel member using an improved corner bead includes the step of attaching the first wing of an obtuse V-shaped device through a lathe to the structural steel member utilizing pneumatic or screw type fasteners. The mesh structure of the second wing of the V-shaped device provides a dam to form a roughened surface on the first application of fireproofing material until it hardens.