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|
90
< windspeed = 100 4lb. (2kg) missle impacting at a speed of 40
ft. (12m)/sec |
100
< windspeed = 1108 4lb. (4kg) missle impacting at a speed of
40 ft. (12m)/sec |
Windspeed = 110 9 lb. (4kg) missle impacting at a speed of 50 ft.
(12m)/sec |
SMALL MISSLE IMPACT TEST: Height above 30 feet (9m).
|
Inward
Acting Pressure |
Outward
Acting Pressure |
||
Range |
Number
of Cycles |
Range |
Number
of Cycles |
0.2
Pmax to 0.5 Pmax |
3,500 |
0.3
Pmax to 1.0 Pmax |
50 |
0.0
Pmax to 0.6 Pmax |
300 |
0.5
Pmax to 0.8 Pmax |
1,050 |
0.5
Pmax to 0.8 Pmax |
600 |
0.0
Pmax to 0.6 Pmax |
50 |
0.3
Pmax to 1.0 Pmax |
100 |
0.2
Pmax to 0.5 Pmax |
3,350 |
Pmax: Denotes the maximum design load allowed in accordance with ASCE 7-88. "Minimum Design Loads for Buildings and Other Structures."
Pass/Fail Criteria
SFBC - Dade County Addition: A particular system of construction shall be deemed to comply with this recommended practice if three test specimens reject the missile impacts without penetration and resist the cyclic pressure loading with no cracks forming which are longer than 5" and 1/16" wide through which air can pass.
SBCCI SSTD 12: The test specimens shall resist the missile impacts prescribed and resist the cyclical pressure loading with no cracks forming longer that 5" through which air can pass or with no opening through which a 3" diameter sphere can pass.