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1992-03-04
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Survival 101-Blast Effects
Courtesy Ken Seger's BBS
(314) 821-2815
Blast effects of nuclear bomb (this is for an 80 col. printout)
All distances to effect in miles. Note: airburst distances in ( )
Airburst for optimum damage for that effect, since the height of airburst
changes these figures represent worst case. See example for fixed height
results.
MT 1psi 1.5 3 6 10 30 overpressure
0.2 4(7.5) 3(6) 2(3.4) 1.3(1.8) 1(1.2) .55(.6)
0.6 6(11) 4.5(9) 2.8(5) 1.8(2.6) 1.4(1.7) .8(.9)
1.0 7(13) 5.5(10.5) 3.3(6) 2.2(3.2) 1.6(2) .95(1.05)
5 12(23) 9(18) 5.5(10) 3.7(5.5) 2.7(3.5) 1.6(1.8)
20 19(35) 14(28) 9(16) 6(8.5) 4.3(5.5) 2.5(3.4)
(note the 5 & 20 Megaton bombs only exist in old Bear and Bison class bombers)
(fixed height of burst at 3,800 ft to maximize 30 PSI effect)
1 MT 9 6.5 4 2.6 1.9 1.05
(fixed height of burst at 8,500 ft to maximize 6 PSI effect)
1 MT 11 9 5 3.2 2 not at ground zero
(fixed height of burst at 15,500 ft to maximize 1 PSI effect)
1 MT 13 10 4.8 1.7 not obtainable at ground zero
Note 1MT yields a fireball of about 3,600 feet in radius with a maximum height
for contaminating burst of 3,000 feet.
British Home Office blast catgories are
Class. Degree of house damage PSI range
A Complete/Debris 11+
B Heavy 6-11
C Heavy to light 1.5-6
D Light,glass & tile 0.75-1.5
Examples of damage (Clayton, from Gladstone)
0.5 psi Private airplanes damaged but flyable, windows have light damage
1.0 psi Windows heavily damaged, wood frame houses lightly damaged
2 psi Human body thrown hard enough to cause incapcitating injuries
3 psi Human body thrown hard enough to cause 1% fatalities
5 psi Wood frame house collapse, 1% of eardrums rupture (elderly)
6 psi Human body thrown hard enough to cause 99% fatalities
7 psi Reinforced concrete houses lightly damaged
15 psi Minor injury to lungs from overpressure (1 ATM)
25 psi Reinforced concrete houses collapse
Note most in-site blast shelters are typically 1 or 3 ATM designs.
1 ATM equals 15 psi.
Downloaded From P-80 Systems.....