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Chapter 3
General Design Considerations
3.1
3.1.1 The purpose of this Chapter is to provide the Design Agency
with general information and direction on the systems and materials
Introduction
applicable to all AR facilities, on the design of the site, and on the
design of the various buildings. The Chapter includes some "lessons
learned" by Corps of Engineers and private-sector A/E teams on
previous AR projects.
3.1.2 The considerations in this Chapter are those which affect the
site and landscaping, or an entire facility or building; for information
on individual spaces, see Chapter 4. AR building system and
material preferences are also reviewed and discussed in this
Chapter.
3.2
Civil and
3.2.1 Grading and Drainage
Utilities
3.2.1.1 General
3.2.1.1.1 Sites should be developed for positive drainage away
from all building areas. Site drainage should be accomplished by
sheet drainage, preferably over turf areas or other means of erosion
control, especially adjacent to foundations. Use of onsite ditches
and channels for conveyance of surface water will be minimized.
Extremely flat sites on which it is not practical to establish sufficient
elevation differences for overland drainage may require use of
localized storm sewers and catch basins to convey storm water
flow.
3.2.1.1.2 In general, all sites now require detention/retention of
storm water to meet the standards of local or state water resources
agencies responsible for regulation of surface water discharges;
designs will comply with local requirements for release of storm
water from the site. Government installations with a public works
department may have adopted installationspecific drainage
requirements.
3.2.1.2 Storm Water Quality and Control
UFC 4-171-05
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