Chain surveying — the overall accuracy of measurement in a chain survey does not depend on which one of the following considerations?

Difficulty: Easy

Correct Answer: importance of the features

Explanation:


Introduction / Context:
Accuracy in chain surveying depends on how measurements are taken and controlled so that plotting errors stay within acceptable limits. Several factors influence this, including the layout of chain lines, the size of offsets, and the plotting scale. However, some considerations affect only the amount of detailing effort, not the measurement accuracy itself.


Given Data / Assumptions:

  • Offsets must be short enough to stay within positional tolerances at the chosen scale.
  • Chain line layout should minimize cumulative error and provide good checks (tie lines, check lines).
  • Plotting scale converts ground errors into plan displacements.


Concept / Approach:

Accuracy hinges on geometric control and measurement precision. Long offsets amplify perpendicular-setting errors; poor chain-line layout can magnify cumulative errors; a small plotting scale tightens tolerances. The importance of features (e.g., whether a fence is critical or minor) influences how frequently you observe and plot details, but it does not change the underlying accuracy of measurement process or the permissible errors dictated by scale and method.


Step-by-Step Solution:

1) Identify variables that affect numeric error limits: scale, offset length, and chain-line geometry.2) Note that “importance” affects the decision to include more or fewer details, not accuracy per se.3) Conclude that measurement accuracy does not depend on feature importance.4) Select the corresponding option.


Verification / Alternative check:

Surveying guidance relates limiting offset lengths and check-line frequencies to scale and layout—not to subjective feature importance.


Why Other Options Are Wrong:

Length of offset — directly affects perpendicular error magnitude.
Scale of plotting — sets plan tolerance for ground errors.
General layout — impacts error propagation and ability to detect/correct mistakes.


Common Pitfalls:

Allowing “important” features to bias instrument precision expectations; accuracy must be maintained uniformly across the sheet to ensure consistency.


Final Answer:

importance of the features

More Questions from Surveying

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion