In the rectangular survey system, how many acres are contained in a standard section?
Correct Answer
C) 640 acres
A section in the rectangular survey system is one square mile, which equals 640 acres. This is a fundamental unit of measurement in the government survey system.
Why This Is the Correct Answer
A section is defined as one square mile in the rectangular survey system. Since one square mile contains exactly 640 acres (calculated as 5,280 feet × 5,280 feet ÷ 43,560 square feet per acre), a standard section always contains 640 acres. This is a fundamental measurement that has remained constant since the establishment of the Public Land Survey System in 1785.
Why the Other Options Are Wrong
Option A: 160 acres
160 acres represents a quarter-section, which is one-fourth of a full section, not a complete section.
Option B: 320 acres
320 acres represents a half-section, which is one-half of a full section, not a complete section.
Option D: 1,280 acres
1,280 acres would represent two sections combined, which is twice the size of a standard section.
The 640 Rule
Remember 'Six-Forty for a Square Mile' - visualize a large square with '640' written inside it, and remember that this represents one section or one square mile.
How to use: When you see any question about sections in the rectangular survey system, immediately think '640 acres = 1 section = 1 square mile' and work from there to calculate subdivisions or multiples.
Exam Tip
Write down the basic conversion (1 section = 640 acres) at the top of your scratch paper when the exam begins, as this fundamental measurement appears in multiple question types.
Common Mistakes to Avoid
- -Confusing sections with townships (which contain 36 sections)
- -Mixing up quarter-sections (160 acres) with full sections (640 acres)
- -Forgetting that sections are always one square mile regardless of location
Concept Deep Dive
Analysis
This question tests knowledge of the Public Land Survey System (PLSS), also known as the rectangular survey system, which is the primary method used to survey and identify land parcels in much of the United States. The system divides land into a grid of squares, with townships being 36 square miles and sections being subdivisions within townships. Understanding the hierarchical structure of this system is crucial for real estate professionals, as it affects legal descriptions, property boundaries, and land measurements. The section is the most commonly referenced unit in real estate transactions and appraisals.
Background Knowledge
The Public Land Survey System divides land into townships (36 square miles each), which are further subdivided into 36 sections of one square mile each. Each section contains exactly 640 acres and can be further subdivided into quarter-sections (160 acres), half-quarter sections (80 acres), and smaller parcels.
Real-World Application
When appraising rural properties, appraisers frequently encounter legal descriptions referencing sections, such as 'the NW 1/4 of Section 15' (160 acres) or 'the S 1/2 of Section 22' (320 acres), making this knowledge essential for determining property size and boundaries.
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