TM 5-623
was measured as follows:
Since 2500 square feet were surveyed as additional, the
section's randomly surveyed area is, therefore, 24,500-
Additional
Sample Unit
Medium-Severity
2500=22,000 square feet. The extrapolated distress
Sample Unit ID
Area, Square FeetAlligator
quantity is obtained by multiplying the distress density by
the section's randomly surveyed area and then adding
the amount of additional distress. In this example:
Square Feet
Extrapolated Distress Quantity =.05 x 22,000 + 1000
01
2500
1000
=2100 square feet
Total
Additional
2500
1000
3-9
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