Offset Wall Block Design for Stable Dry Stone Construction

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Solution Overview

Problem

Existing dry stone walls are less stable than concrete walls due to their reliance on friction, making them unsuitable for free-standing structures, and methods to increase stability, such as specially shaped bricks, are costly and difficult to produce.

Innovation Solution

A brick design featuring spacers on the upper and lower sides to set a defined joint height, allowing for improved mortar placement and anchorage with a grid, combined with a solid concrete composition and dummy joints for enhanced stability and aesthetic appeal, facilitates the creation of a more stable and cost-effective dry stone wall system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If specially shaped bricks are used to increase stability, then the stability of dry stone walls is improved, but the production complexity and cost increase

Engineering Contradiction:
ImprovestabilityVSAvoidproduction complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The brick is divided into an upper part and a lower part that are laterally offset, creating a stepped configuration. This segmentation provides stability through the offset arrangement without requiring complex geometric shapes, as each part remains relatively simple in form.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper part and lower part of the brick are arranged asymmetrically with lateral offset, where the upper part is positioned offset from the lower part. This asymmetric arrangement creates stability through the offset configuration while maintaining simple, manufacturable shapes for each individual part.

Inventive Principle:
Principle #4Asymmetry

2Reliability

If elaborate geometric shapes are used for bricks, then the stability is improved, but the manufacturing cost increases

Engineering Contradiction:
ImprovestabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The brick comprises a lower part and an upper part that can be manufactured separately using simple molds, then assembled by offsetting them laterally. This segmentation allows each part to be produced with simple geometry at low cost, while the combined offset structure provides the desired stability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Two simple brick parts (upper and lower) are merged through lateral offset arrangement to create a stable wall structure. The merging of these simple components achieves the stability function without requiring either component to be complex or expensive to manufacture.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If spacers are added to define joint height, then the precision of mortar placement is improved, but the device complexity increases

Engineering Contradiction:
Improvejoint height precisionVSAvoidbrick structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The spacer function is merged with the brick structure itself by forming spacers as integral parts of either the upper or lower brick part. This integration provides precise joint height definition without adding separate, complex components, as the spacers are simply extensions of the basic brick geometry.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The spacers serve multiple functions: they define joint height for precise mortar placement, provide alignment guidance during construction, and maintain consistent spacing between bricks. This multi-functionality reduces the need for additional specialized components, keeping the overall structure simple.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2929100B1Wall block for a wall system
Publication Date: 2017.02.01 METTEN STEIN DESIGN GMBH & CO KG
  • EP2929100B1 patent drawing
  • EP2929100B1 patent drawing
  • EP2929100B1 patent drawing

AI summary

What is represented and described is a wall block (1) for a wall system (10), having an upper part (2), which comprises the upper side of the wall block (1), and having a lower part (3), which comprises the lower side of the wall block (1), wherein the wall block (1) has at least one spacer (7) on the upper side thereof and/or on the lower side thereof, and also a wall system (10) and a method for erecting a wall system (10). In order to make it possible for the wall to be produced in an advantageous manner and to have high stability, it is proposed that the upper part (2) and the lower part (3) of the wall block (1) are offset laterally relative to one another.