Exterior Wall Backing Segmentation for Lean-to Roof Construction
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Solution Overview
Problem
The construction efficiency of exterior wall structures near lean-to roofs, which include a backing, can be improved to enhance construction freedom.
Innovation Solution
An exterior wall structure with a column, a first backing attached upward from the lean-to roof frame member, a second backing attached downward from the lean-to roof frame member, a cladding attached to the first backing, a lean-to roof frame member, and a flashing member between the cladding and the lean-to roof frame member, where the flashing member includes specific portions to manage water effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single backing extends along the column from the upper side to the lower side of the lean-to roof, then the structure is simple, but the construction freedom is limited
Solution Approach 1:
The single backing is divided into two separate backings: a first backing attached to the column at a position upward from the lean-to roof frame member, and a second backing attached to the column at a position downward from the lean-to roof frame member. This segmentation allows independent installation and positioning, thereby improving construction freedom while maintaining structural simplicity.
2Strength
If the first backing is attached between two columns, then the structural integrity is improved, but the installation complexity increases
Solution Approach 1:
The first backing is extracted from the space between two columns and repositioned to be attached directly to the outer surface of a single column. This simplifies the installation process by eliminating the need to position and secure the backing between multiple columns, while the column's inherent strength maintains structural integrity.
3Reliability
If the flashing member is arranged without specific water management portions, then the structure is simpler, but water management effectiveness is reduced
Solution Approach 1:
The flashing member is designed with different portions having specific functions: a flashing upper portion that receives water from the first backing, a flashing intermediate portion that guides water, and a flashing lower portion that directs water to the lean-to roof. This local differentiation of functions improves water management effectiveness while keeping each portion structurally simple.
Data Source
AI summary
An exterior wall structure of a building, the building including an exterior wall on which a lean-to roof is arranged. The exterior wall structure includes a column forming the exterior wall, a first backing attached to the column, a second backing attached to the column at a position located downward from the first backing, a cladding attached to the first backing, a lean-to roof frame member forming the lean-to roof, and a flashing member arranged between the cladding and the lean-to roof frame member. The first backing is attached to the column at a position located upward from the lean-to roof frame member. The second backing is attached to the column at a position located downward from the lean-to roof frame member.