For a fourth-order geodetic control network established by traverse, the position closure after azimuth adjustment should be at least as good as which ratio?

For a fourth-order geodetic control network established by traverse, the position closure after azimuth adjustment should be at least as good as which ratio?

• A. 1:100,000
• B. 1:50,000
• C. 1:20,000
• D. 1:10,000

Answer: (D)

In a fourth-order geodetic control network, the precision goal is set by how closely the network must close after adjustment. After azimuth adjustment, the remaining position misclosure should be very small to ensure reliable coordinates across the network. The accepted standard is that this position closure must be at least as good as one part in ten thousand of the length involved. This tight ratio reflects the high precision expected for fourth-order networks. Ratios like 1:20,000, 1:50,000, or 1:100,000 are looser and would allow larger cumulative errors, which is not acceptable for this level of control.

In a fourth-order geodetic control network, the precision goal is set by how closely the network must close after adjustment. After azimuth adjustment, the remaining position misclosure should be very small to ensure reliable coordinates across the network. The accepted standard is that this position closure must be at least as good as one part in ten thousand of the length involved. This tight ratio reflects the high precision expected for fourth-order networks. Ratios like 1:20,000, 1:50,000, or 1:100,000 are looser and would allow larger cumulative errors, which is not acceptable for this level of control.