Fastener Guide for Accurate Structural Member Alignment
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Solution Overview
Problem
Current connectors in light wood frame construction often fail to ensure proper transfer of thrust, tension, and shear forces between structural members due to inadequate fastener placement, requiring field bending and interpretation of building codes, leading to potential misalignment and reduced load capacity.
Innovation Solution
A fastener guide with pre-sized and pre-positioned through-holes, calculated according to building codes, that allows for accurate spacing and alignment of fasteners to secure structural members, eliminating the need for code interpretation and field bending, and can be either removed or left in place without affecting load transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If connectors are hammered into place to develop contact surfaces, then connection is achieved, but the shape of these connectors directs the transferred load to the edge of the wall plate instead of to the top of the wall plate, reducing load transfer effectiveness
Solution Approach 1:
The connector is pre-formed with a specific shape and configuration before installation. The pre-formed shape includes a bearing surface that is预先 positioned to contact the top of the wall plate, ensuring correct load transfer path is established during installation without requiring field bending or adjustment.
Solution Approach 2:
The connector's geometric parameters (shape, orientation, bearing surface position) are specifically designed and controlled during manufacturing to achieve the optimal load transfer configuration. This eliminates the need for field bending and ensures the load is directed to the top of the wall plate rather than the edge.
2Ease of manufacture
If field bending of connectors is required, then connection can be achieved, but proper fastener placement is inhibited and installation time increases
Solution Approach 1:
The connector is pre-formed with the correct shape and fastener placement guides during manufacturing. This preliminary action eliminates the need for field bending and pre-positioning of fasteners, allowing for direct installation with proper fastener placement without time-consuming field modifications.
3Reliability
If connectors require placement prior to placing rafters, then connection is established early, but construction sequence flexibility is reduced and installation complexity increases
Solution Approach 1:
The connector is pre-formed with all necessary features (bearing surfaces, fastener holes, alignment guides) during manufacturing, so it can be directly installed in its final position without requiring preliminary placement or field bending. This maintains connection stability while simplifying the construction sequence.
4Manufacturing precision
If hand layout of fasteners is required, then code requirements can be met, but installation time and potential for errors increase
Solution Approach 1:
The connector is pre-formed with pre-positioned fastener holes and alignment features that directly indicate the correct fastener placement locations. This preliminary positioning eliminates the need for hand layout and code interpretation during installation, ensuring accurate fastener placement while reducing installation time.
Solution Approach 2:
The connector incorporates physical copies or representations of the required fastener placement pattern through pre-formed holes and alignment guides. These features replicate the correct fastener arrangement without requiring field measurement or code interpretation, ensuring precision while reducing time.
Data Source
AI summary
A fastener guide for accurate spacing and aligning of fastening means in light wood frame construction, comprising a vertical leg comprising a generally flat rigid material and including a plurality of through-holes spaced according to a calculated matrix for driving fasteners therethrough to secure a first structural member to a second structural member, and a flange attached to or integral with the vertical leg and positioned approximately at a right angle thereto. The fastener guide is placed against a face of the first structural member such that the vertical leg plurality of through-holes are positioned to allow for transfer of thrust, tension and shear forces to the second structural member oriented adjacent thereto at a building frame joint. Fasteners are driven through the plurality of through-holes into the second structural member to secure the first structural member to the second structural member.