MIL-HDBK-1011/2
APPENDIX A (continued)
3.3.6
Venturi Effect. The venturi effect (see Figure A-15) occurs when
two large buildings are placed at an angle to each other creating a funnel
with a narrow opening that is no more than two or three times the building
height. Winds channeling through the opening are accelerated to high speeds.
This effect occurs only when the buildings are at least five stories high,
have a combined length of 300 ft (100 m), and when the areas in front of and
behind the venturi are relatively open.
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