Prefabricated Eave Piece with Recess for Adjustable Roof Inclination
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Solution Overview
Problem
In roof constructions, especially terraces, the limited space under eaves poses challenges due to the thickness of the structure, requiring complex and difficult installations to accommodate inclined roof beams and supporting elements, and the need for precise fitting and tools to handle varying dimensions and snow loads.
Innovation Solution
A prefabricated eave piece with a recess for a horizontal front beam and a gutter, allowing for adjustable inclination and reduced vertical height, along with fastening members for easy installation, supports the roof beam and panel system, enabling faster construction and reduced tool requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional lumber construction methods are used with working and shaping at the installation site, then the structure can be adapted to different dimensions, but the construction time is protracted and requires several tools
Solution Approach 1:
The eave piece is pre-fabricated with a recess and circular arch structure before installation, eliminating the need for on-site working and shaping of lumber. This preliminary preparation allows rapid installation without requiring multiple tools or extended construction time, while still adapting to different terrace dimensions through the standardized modular design
Solution Approach 2:
The roof construction is divided into standardized modular components (eave pieces with integrated recesses and circular arches) that can be independently manufactured and then assembled. This segmentation allows each component to be optimized in advance while the overall system adapts to different dimensions through modular configuration
2Strength
If multiple transverse supporting structures and battens are placed on the roof beam, then the structure can support the roofing, but the structure becomes thick and takes a lot of space in the vertical direction
Solution Approach 1:
The eave piece integrates multiple functions into a single component: it provides the transverse supporting structure, incorporates the recess for the front beam, and includes the circular arch structure for panel support. This merging eliminates the need for separate battens and supporting structures, reducing the vertical height while maintaining the required support capacity for the roofing
3Strength
If the structure is made thicker to accommodate supporting elements, then the support capacity is sufficient, but not enough space is left under the roof beams for standing persons
Solution Approach 1:
The circular arch structure is positioned to extend downward from the eave piece, utilizing the vertical space efficiently. This dimensional arrangement allows the supporting structure to provide adequate strength while minimizing the horizontal projection, thereby maximizing the usable space under the eaves for standing persons
Data Source
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Figure 3
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AI summary
An eave piece, as well as a system for a roof construction, comprising: an eave piece (1, 31) which is prefabricated and intended to be fixed as an extension to a roof beam (7), which roof beam is substantially horizontal or inclined when installed in the use position; and a front beam (8, 34) which is prefabricated, substantially horizontal, intended to be placed transversely with respect to the roof beam (7), and configured to support said eave piece (1, 31) and thereby also the roof beam (7). The lower surface of the eave piece is provided with a recess (42), in which at least the top surface (61) of the front beam (8, 34) can be received. Structures to be placed against each other are provided on the bottom of the recess (42) on one hand and on the top surface (61) of the front beam on the other hand, their form following at least partly the shape of a circular arch. Said structures are, for the installation, also configured to allow use positions of the eave piece (1, 31) with a varying inclination with respect to the front beam (8, 34).