Triangular Modular Shuttering Block for Swimming Pool Corner Stairs

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Solution Overview

Problem

The construction of corner stairs for swimming pools is hindered by the need for costly and time-consuming cutting and adjustment of conventional shuttering blocks, which can lead to inaccuracies and sealing issues, especially in corner configurations, and existing solutions are either expensive or labor-intensive.

Innovation Solution

A modular shuttering block with a right prism shape and integrated ribs and assembly means, allowing for interlocking and precise alignment without cutting, made from plastic material, enabling efficient assembly and alignment of blocks to form corner stairs without the need for precise cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional rectangular or cubic formwork blocks are used for corner stairs, then they can be obtained through standard manufacturing, but they require costly and time-consuming cutting and adjustment work to achieve precise corner dimensions

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidcutting and adjustment time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The formwork block is divided into multiple modular segments that can be assembled to form corner stairs of various configurations. Each segment is pre-formed with standardized dimensions and connection features, eliminating the need for on-site cutting and adjustment while allowing flexible assembly to match different corner step requirements

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The corner step geometry is pre-formed in the mold during manufacturing, rather than requiring subsequent cutting and shaping operations. The mold itself is designed with the exact corner step geometry, so the formwork block emerges ready-to-use with precise dimensions and shapes already integrated

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If cutting and adjustment work is performed on formwork blocks, then adaptation to specific project dimensions is possible, but inaccuracies can cause defects during liner installation and sealing problems

Engineering Contradiction:
Improvedimensional adaptabilityVSAvoidsealing reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

Instead of physically modifying the formwork block through cutting, the solution changes the dimensional parameters by selecting from multiple pre-fabricated segments with standardized dimensions. This allows adaptation to different project requirements while maintaining manufacturing precision, as each segment is produced with controlled tolerances in the factory setting

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If monolithic staircases are constructed using large molds, then a single-piece structure is achieved, but they are very expensive and bulky in terms of storage and transport

Engineering Contradiction:
Improvestructural integrityVSAvoidmold complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The monolithic staircase is segmented into multiple formwork blocks that can be manufactured separately using smaller, simpler molds. These blocks are then assembled on-site to create the complete staircase structure, reducing mold size and complexity while maintaining the integrity of the final concrete structure through proper connection design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The formwork blocks are designed with nested or interlocking geometries that allow them to fit together precisely, with smaller blocks nesting within or alongside larger ones. This modular nesting approach simplifies individual block designs and molds while enabling the construction of complex staircase configurations

Inventive Principle:
Principle #7Nested doll (Nesting)

4Ease of manufacture

If traditional wooden formwork is used, then construction is possible, but the formwork must be removed after concrete setting, adding to the construction process time and complexity

Engineering Contradiction:
Improveformwork availabilityVSAvoidformwork retention time
Core Design Contradiction:
Ease of manufactureVSDuration of action of moving object

Solution Approach 1:

The formwork blocks are designed as disposable elements that remain embedded in the finished concrete structure, eliminating the need for removal and recovery operations. The blocks serve their formwork function during concrete setting and then become part of the permanent structure, simplifying the construction process and eliminating formwork removal time

Inventive Principle:
Principle #34Discarding and recovering

Data Source

PatentEP3262251B1Modular shuttering block
Publication Date: 2021.06.30 PISCINES DESJOYAUX
  • EP3262251B1 patent drawingFigure 1
  • EP3262251B1 patent drawingFigure 2a~2b
  • EP3262251B1 patent drawingFigure 3~4

AI summary

The invention relates to a modular shuttering block (1) defining a through-housing that connects a first face (A) of the modular block (1) and a second face (B), opposite the first face, for the reception of a filling material; the modular block (1) being provided with means (2) for assembling with at least one other block. According to the invention, the modular block (1) is in the form of a right prism with isosceles triangular bases formed by the first and second faces (A, B). The invention also relates to an assembly formed by a plurality of such modular blocks and finds application notably for the production of swimming pool steps.