impact the structure. The resistance force developed by the penetrating
missile may be used to determine the response of the buried structures.
If the earth cover does not meet the requirements in b, above, the missile
should be assumed to impact the structure. In these instances, the
structure may be evaluated for missile impact using techniques similar to
Forcing functions developed for aircraft impact on rigid barriers may be
used as a conservative estimate of the missile impact loading for earth-
Structural Evaluation Results. If there are no adverse effects as listed in
Section 6.1.1, then no further analysis is necessary, and the structural evaluation
results should be documented. However, if there are any adverse effects, then
further analysis, as described in Chapter 7, should be performed.
Riera, J. "On the Stress Analysis of Structures Subjected to Aircraft Impact Forces,"
Nuclear Engineering and Design, Vol. 8, 1968.
Chang, W.S. "Impact of Solid Missiles on Concrete Barriers," The Journal of the Structural
Division, American Society of Civil Engineers, Vol. 107, No. ST2, February 1981.
Sugano, T. et al. "Local Damage to Reinforced Concrete Structures Caused by Impact of
Aircraft Engine Missiles, Part 2," Nuclear Engineering and Design, Vol. 140, 1993, pp.