TM 5-800-4
an undeveloped site. When difficult to document the support
subtotal times the contingency times the supervision, inspection
cost, a percentage of the housing unit cost can be used until
and overhead (SIOH). The contingency for new and
replacement construction is 5 percent. The SIOH for CONUS
detailed analysis is completed. Demolition of existing units
locations is 6 percent. For OCONUS locations, the SIOH is 6.5
should be a separate cost breakout. The environmental
conditions and individual State regulations must be considered
percent.
when determining the demolition cost. When using a "generic"
18. Rounded Project Cost - The rounded project cost is the
for support cost and demolition, the area cost factor must be
project total rounded in accordance with the Congressional
considered to arrive at the total support cost.
rounding rule (located in Chapter 10 of this TM).
16. Subtotal - The summary subtotal consists of the -
19. Project Cost/SF - The project cost per square foot
housing unit cost, solar cost, if any, information system cost,
equals the project rounded cost divided by the product of the
other cost, if any, and the support cost.
number of units times the average net square footage times the
17. Project Total - The project total equals the summary
cost factor.
G-2
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