Survival 101 - Blast Effects

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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.