Modular Precast Concrete Steps Segmentation
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Solution Overview
Problem
Existing pre-cast concrete steps are heavy, impractical to install without heavy equipment, limited in design and customization options, and require replacing entire units when only specific components are damaged.
Innovation Solution
A modular system of pre-fabricated concrete modules, including side wall, riser, and tread modules, weighing no more than 250 pounds each, allowing for on-site assembly with customizable designs, easy replacement of individual components, and use of internal brackets and doweling for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pre-cast concrete steps are made as one-piece units, then structural strength and stability are improved, but weight increases making installation impractical without heavy equipment
Solution Approach 1:
The pre-cast concrete step system is divided into multiple separate modules including side wall modules, tread modules, and riser modules. Each module weighs no more than 250 pounds, making them manually movable, while the modular connection system maintains overall structural strength through internal brackets, bracing, and doweling that join the segments together.
2Ease of manufacture
If pre-cast concrete steps are made as one-piece units, then manufacturing simplicity is improved, but installation flexibility and customization options decrease
Solution Approach 1:
The step system is segmented into standardized modules that can be manufactured using simple, repeatable processes. These modules can then be combined in various configurations to create custom step designs with different heights, widths, and styles, allowing both manufacturing efficiency and design flexibility.
Solution Approach 2:
The modular components are designed with universal connection features that allow the same basic modules to serve multiple functions and be assembled into various step configurations. The side wall modules, for example, can be used in different heights and combinations to accommodate different building requirements.
3Strength
If pre-cast concrete steps are made as one-piece units, then structural integrity is improved, but repairability decreases requiring entire unit replacement when damaged
Solution Approach 1:
The step system is divided into separate, replaceable modules including side wall modules, tread modules, and riser modules. If one module becomes damaged, only that specific module needs to be replaced rather than the entire step unit, while the modular connection system maintains structural integrity through proper joining mechanisms.
4Ease of operation
If pre-cast concrete steps are made as one-piece units, then installation simplicity is improved, but installation cost increases due to heavy equipment requirements
Solution Approach 1:
The step system is segmented into lightweight modules that can be manually handled and installed without heavy lifting equipment. While the assembly process involves multiple components, the elimination of crane requirements and the use of simple connection mechanisms actually reduces overall installation complexity and cost.
Data Source
AI summary
A precast concrete step unit formed of left and right sidewalls, risers, and treads, wherein left and right sidewalls are assembled from a plurality of pre-cast sidewall panel modules, with a stepped panel module with two or more steps. Pre-cast concrete riser modules and tread modules extend between the right and left sidewalls. Reinforcing cross brace members are fastened to the inside distal surfaces of the left and right sidewalls where they are bolted into screw anchors embedded into the sidewalls. There are also screw anchor inserts embedded into the proximal ends of the sidewalls and into the ends of a first or lowest of the risers, and adapted for affixing the riser and sidewalls using clip angles or right-angle brackets. After alignment, the treads and remaining risers are installed using a construction adhesive which may be applied using a caulk gun. The precast modules each weight about 200 pounds or less, with none exceeding 250 pounds, and most much less. The installation can be carried out by an installation team of two workmen. One-piece concrete footing pieces can be used to support the lower edges of the sidewall panel modules.