172.105 Extent of damage.§ 172.105 Extent of damage.
For the purpose of § 172.103, design calculations must include both side and bottom damage, applied separately. Damage must consist of the most disabling penetration up to and including penetrations having the following dimensions:
(a) Side damage must be assumed to be as follows:
(1) Longitudinal extent - 6 feet (183 centimeters).
(2) Transverse extent - 30 inches (76 centimeters).
(3) Vertical extent - from the baseline upward without limit.
(b) Bottom damage must be assumed to be 15 inches (38 centimeters) from the baseline upward.