Grade Rod End Cap for Accurate Pipe-End Referencing
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Solution Overview
Problem
Existing grade rods struggle to maintain perpendicular orientation to the ground surface when referencing the end of a recessed surface, such as a buried pipe, leading to inaccurate readings due to user fatigue and difficulty in maintaining the rod's position.
Innovation Solution
An end cap with a projection is attached to the grade rod, allowing it to rest partially within the recessed surface while maintaining perpendicular orientation to the ground, ensuring accurate readings without user fatigue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the grade rod is held manually to reference the end of a recessed surface, then the rod can be positioned near the opening, but the user experiences fatigue and difficulty maintaining perpendicular orientation, leading to inaccurate readings
Solution Approach 1:
The grade rod system performs its own positioning function through the projection resting on the recessed surface, eliminating the need for continuous manual adjustment. The rod self-stabilizes in the perpendicular orientation required for accurate readings, allowing the user to simply place it without maintaining force.
Solution Approach 2:
The projection acts as an intermediary element between the grade rod and the recessed surface. It provides a mechanical interface that transfers the positioning function from manual control to the interaction between the projection and the surface, enabling accurate readings without direct user intervention.
2Measurement precision
If the grade rod is moved closer to the recessed surface opening, then accurate readings can be obtained, but the user must maintain precise perpendicular orientation which is difficult and tiring
Solution Approach 1:
The grade rod system performs its own positioning function through the projection resting on the recessed surface, eliminating the need for continuous manual adjustment. The rod self-stabilizes in the perpendicular orientation required for accurate readings, allowing the user to simply place it without maintaining force.
3Ease of operation
If the grade rod is positioned away from the recessed surface, then user effort is reduced, but reading accuracy decreases due to improper orientation
Solution Approach 1:
The grade rod system performs its own positioning function through the projection resting on the recessed surface, eliminating the need for continuous manual adjustment. The rod self-stabilizes in the perpendicular orientation required for accurate readings, allowing the user to simply place it without maintaining force.
Data Source
AI summary
An end cap for a grade rod and a method of using the same is provided. The end cap has a body that includes a bottom wall and a front wall perpendicular to the bottom wall. An outer surface of the bottom wall is substantially planar. A projection extends outwardly from the front wall. A bottom surface of the projection is substantially planar and substantially aligns with the outer surface of the bottom wall. In specific embodiments, the end cap is attached to an end of a grade rod. To reference the end of a recessed surface, such as a pipe, the end cap body is attached to a lower end of the grade rod. The grade rod is then positioned perpendicular to the ground at an open end of the recessed surface, such that the bottom surface of the projection rests on an interior portion of the recessed surface.