Which symbol is used to denote a benchmark for elevation control?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the ASBOG Fundamentals of Geology exam. Access flashcards, multiple-choice questions, and understand key geologic principles. Prepare confidently for your exam!

Multiple Choice

Which symbol is used to denote a benchmark for elevation control?

Explanation:
A benchmark marks a fixed point with a known elevation that serves as the reference for vertical control. On plans and field notes, the symbol BM denotes that point, indicating its published elevation relative to a datum so other elevations can be derived from it. GPS coordinates provide horizontal position, not an elevation control symbol; an elevation datum is the reference surface itself rather than a marker; and the term “topographic benchmark” isn’t a standard marker symbol.

A benchmark marks a fixed point with a known elevation that serves as the reference for vertical control. On plans and field notes, the symbol BM denotes that point, indicating its published elevation relative to a datum so other elevations can be derived from it. GPS coordinates provide horizontal position, not an elevation control symbol; an elevation datum is the reference surface itself rather than a marker; and the term “topographic benchmark” isn’t a standard marker symbol.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy