(a) The association must use the damage estimation
module to estimate damage to components of a structure that is the
subject of a residential slab claim. The association must use the
following inputs:
(1) outputs from the wind field and surge and wave
models described in §5.4035 and §5.4037, respectively, of
this title; and
(2) property database information.
(b) The association must determine the total damage
to a structure attributable to wind by:
(1) estimating the time history of wind damage to components
and systems according to the damage estimation module, without considering
the effects of storm surge and waves;
(2) estimating the probability of collapse due to surge
and waves (P_{surge }) using
Variant 5 of the methodology in Tomiczek, T., Kennedy, A., and Rogers,
S., Collapse Limit State Fragilities of WoodFramed
Residences From Storm Surge and Waves During Hurricane Ike, Journal
of Waterway, Port, Coastal, and Ocean Engineering (ASCE), (2014) 140(1),
4355, dx.doi: 10.1061/(ASCE)WW.19435460.0000212;
(3) estimating the probability that wind caused the
collapse of the structure (P_{wind }) by determining the maximum of
the probabilities of failure for wall studs in bending, the connections
of the wall studs to the wall plates, and the shear walls using the
damage estimation module;
(4) calculating the time of surge slabbing (t_{surge }), which
is the earlier of the time at which:
(A) the probability of surge and wave collapse (P_{ surge }) reaches
its maximum; or
(B) the probability of surge and wave collapse first
reaches 50 percent;
(5) calculating the wind damage to each building component
at the time of surge slabbing (D_{t_surge }) using the damage estimation
module; and
(6) calculating wind damage each building component
sustained during the applicable storm (D_{total_component }) using the formula:
Attached Graphic
(c) The association must also use an observational
approach, as described in Section 6 of the expert panel's report,
along with the probabilistic approach described in §§5.4032
 5.4040. In using an observational approach, the association must
consider the following:
(1) modeled or observed surge and wave heights;
(2) peak wind speed;
(3) postevent photographs referenced in §5.4036(b)
of this title; and
(4) observed damage to surviving structures.
(d) The association may input representations of the
wind exposure category for eight direction sectors.
(e) The association may also incorporate other methods
for computing probabilities of component and system failure due to
wind such as the Monte Carlo simulation or the RackwitzFiessler method.
