Which bottom cross-section dimension is used for the first order accuracy of survey monuments?

Prepare for the DMC Administrative Order Test No. 2007-29. Use flashcards, interactive quizzes, and detailed explanations for each question to enhance your understanding. Master the content with our comprehensive practice material and succeed!

Multiple Choice

Which bottom cross-section dimension is used for the first order accuracy of survey monuments?

Explanation:
For first-order survey monuments, stability and long-term accuracy depend on a solid, well-sized base. The bottom cross-section is the footprint of the monument’s base, and a 40 by 40 centimeter base provides ample bearing area and stiffness to resist settlement, tilt, and environmental effects over time. This size is specified for first-order accuracy because it helps ensure the monument remains stable and true to its position in the network. Smaller bases, such as 35x35, 25x25, or 20x20, are typical for lower-order markers or less demanding applications and would not meet the stability requirements of first-order monuments.

For first-order survey monuments, stability and long-term accuracy depend on a solid, well-sized base. The bottom cross-section is the footprint of the monument’s base, and a 40 by 40 centimeter base provides ample bearing area and stiffness to resist settlement, tilt, and environmental effects over time. This size is specified for first-order accuracy because it helps ensure the monument remains stable and true to its position in the network. Smaller bases, such as 35x35, 25x25, or 20x20, are typical for lower-order markers or less demanding applications and would not meet the stability requirements of first-order monuments.

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