EM 1110-2-1100 (Part V)
31 Jul 2003
EXAMPLE PROBLEM V-4-2 (Continued)
SOLUTION:
Step 1; Compute sediment deficit volume in existing profile.
Align existing and representative design profile at MSL datum. Compute volume difference
between existing and representative design profiles. This volume represents the sediment deficit
between the existing condition and the healthy or sediment-rich condition expected to occur after
nourishment. The elevation at which the existing and design profiles are aligned will influence the
magnitude of the computed profile sediment deficit. In the present example the MSL datum is selected
because here beach width is defined relative to this datum. The sediment deficit in the pre-project profile
can vary significantly along the project reach. The computed pre-project sediment deficit in the beach
profile is 100 m3/m in this example and is illustrated in Example Figure C. The data manipulations and
calculations discussed in this example are automated within the BMAP software (Sommerfeld et al.
1994).
C
2
Existing Profile
Design Profile (aligned at datum)
0
-2
Profile Sediment Deficit Volume
-4
-6
0
100
200
300
400
500
Distance from Baseline, m
(Continued)
Beach Fill Design
V-4-41
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