Table I - Foam Requirements If Used For Both Fuel Tank Encasement And Flotation

Location
24-Hour
Immersion
183.516(a)(1)
30-Day
Immersion
Water
Absorption
183.516 (a)(2)
Compressive
Strength or
Density
183.516(b) OR (c)
Saturated
Gasoline Vapor
Engine
Compartment
 
Below 12” height  
 
Above 12" height
 
Outside Engine
Compartment
 
Below 4” height  
 
Above 4" height