Stackable Plastic Column Forms with Interlocking Flanges
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Solution Overview
Problem
Conventional concrete forms, such as fiber, steel, and fiberglass forms, face issues like non-reusability, rusting, grout leakage, and unsightly seams, as well as being heavy, expensive, and lacking uniformity, which affect the quality and appearance of concrete columns.
Innovation Solution
The development of stackable plastic column forms with interlocking flanges that allow for easy assembly and disassembly, providing a smooth, lightweight, water-resistant, and reusable solution for forming concrete columns, which can be used with fiber or metal forms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel sectional forms are used, then the forms provide structural strength and reusability, but the forms are heavy and prone to rusting
Solution Approach 1:
The patent changes the material parameter from steel to plastic (polymer), fundamentally altering the weight and corrosion properties while maintaining structural integrity through optimized design. The plastic sections provide sufficient strength for concrete forming applications without the weight and rusting issues of steel.
Solution Approach 2:
The patent uses composite construction with plastic sections incorporating integral flanges and reinforcing elements. The sections combine multiple functional features (forming surface, connecting flanges, bracing elements) into a unified plastic component that achieves both light weight and structural strength.
2Ease of operation
If steel sectional forms with flanges are used, then the forms can be assembled and disassembled, but grout leakage occurs at the flange abutment joints
Solution Approach 1:
The patent divides the form into modular plastic sections with integral flanges that interlock. Each section is a self-contained unit with built-in connecting features, allowing easy assembly while the continuous plastic material eliminates grout leakage paths at joints.
Solution Approach 2:
The patent changes the joint configuration from abutting flanges (steel) to interlocking integral flanges (plastic). The interlocking design with overlapping surfaces and mechanical engagement prevents grout leakage while maintaining ease of assembly and disassembly.
3Shape
If fiberglass forms with tongue and groove flanges are used, then vertical seams are minimized, but horizontal seams still appear and uniformity is poor
Solution Approach 1:
The patent changes from tongue and groove joints to integral interlocking flanges that are molded as part of the section itself. This eliminates the need for separate tongue and groove components, ensuring uniformity in wall and flange thickness while achieving seamless appearances both vertically and horizontally.
4Productivity
If fiber forms are used, then the forms can be erected and stripped quickly, but the forms are not reusable and leave helical seams
Solution Approach 1:
The patent uses modular plastic sections that can be quickly assembled and disassembled like fiber forms, but the durable plastic material allows repeated reuse. The segmented design with interlocking flanges enables rapid erection while the robust construction provides long-term reusability.
Data Source
AI summary
Methods and apparatus providing a column forming assembly formable from multiple column forming sub-assemblies that are stackable providing a compact storage or transport configuration. A column forming structure is formed from multiple elongated wall sections configured for interlocking engagement with each other to form a hollow, open ended structure adapted to accept a settable substance, such as concrete or plaster. The multiple elongated wall sections are stackable and can be stored to shipped to a job site in a condensed or nested configuration. The nested configuration reduces empty or hollow spaces provided by assembled forms. In some embodiments, the forms can be disassembled after use for transport from the jobsite, storage, and later reuse. The column forming assembly can be combined with one or more column-end forms and with thin-walled column forming inserts.