Which symbol shall be used to designate special plans in survey notation?

• A. Spl
• B. S
• C. Scs
• D. Sp

Answer: (D)

In survey notation, plan types are labeled with concise abbreviations so readers instantly know the plan’s purpose. Special plans are those created for unique or exceptional cases that don’t fit the standard categories, so they need a distinct mark that readers will recognize quickly.

The symbol Sp is used for special plans because it’s short for Special and is a widely understood indicator that the plan isn’t a routine cadastral or standard chart. Other options aren’t standard designations for special plans and can be misleading or too vague—Spl might imply something else, S is too generic, and Scs isn’t a recognized abbreviation for this purpose. So Sp communicates clearly that the plan is of a special nature and warrants attention to its particular scope and conditions.