Profiled Sheet Roof Basin for Green Roof Water Management
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Solution Overview
Problem
Conventional green roof systems are heavy, costly, and require significant construction effort, posing structural burdens on buildings and lacking efficient water management.
Innovation Solution
A lightweight roof structure with a frame and profiled sheet forming a basin, incorporating a membrane element to separate a planting area and storage space, allowing for water circulation and control, and optionally integrating photovoltaic modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional green roof systems with substrate layer and planting layer are used, then green roof functionality is achieved, but weight increases significantly burdening the building structure
Solution Approach 1:
The patent extracts the planting layer from the conventional green roof system, retaining only the substrate layer as a thin functional coating on the profiled sheet. This removes the heavy planting layer while preserving the essential green roof functionality through the retained substrate and frame structure.
Solution Approach 2:
The patent employs thin substrate layers applied to the profiled sheet surface, replacing the thick conventional substrate and planting layers. This thin-film approach maintains green roof functionality while dramatically reducing the overall weight of the system.
2Object-generated harmful factors
If roof slopes are incorporated to drain excess water, then water drainage is improved, but construction complexity and cost increase
Solution Approach 1:
The patent segments the roof surface into multiple channels and ridges formed by the profiled sheet, with each channel acting as an independent water drainage pathway. This segmentation provides effective water drainage without requiring overall roof sloping, simplifying the structural design.
Solution Approach 2:
The profiled sheet's channel structure automatically directs water flow through gravity and surface tension along the channels to collection areas, providing self-draining functionality without additional mechanical drainage systems or complex sloping requirements.
3Adaptability or versatility
If conventional green roof materials and systems are used, then green roof performance is achieved, but purchase price and construction effort become relatively high
Solution Approach 1:
The patent combines the substrate layer, drainage channels, and structural support into an integrated profiled sheet assembly. This merging of functions into a single manufactured component reduces the number of separate materials and assembly steps required, lowering both purchase price and construction effort.
Solution Approach 2:
The profiled sheet serves multiple functions simultaneously: structural support, water drainage through channels, substrate retention, and plant growth surface. This multi-functionality eliminates the need for separate components for each function, reducing overall system cost and simplifying construction.
Data Source
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AI summary
The invention relates to a roof structure, particularly for a freestanding canopy, for example, a bus shelter or carport. The roof structure comprises a frame (10) with an angle profile in which a profiled sheet (21), in particular a corrugated sheet, with channels (22) and webs (23) is arranged. The profiled sheet (21) is connected to the frame (10) such that the profiled sheet (21) and the frame (10) form a (leak-proof) basin. At least one outer edge of the profiled sheet (21) has a distance (d) from an adjacent inner edge of the frame (10), so that water circulation between at least some of the channels is possible. Furthermore, a preferably rigid membrane element (30) is arranged on the profiled sheet (21), in particular on at least some of the webs, such that the basin is divided into a functional area, in particular a planting area (40), and a storage space (20).The storage space (20) is limited from below by the profile plate (21) and the frame (10), laterally by the frame (10) and upwards by the membrane element (30).