EM 1110-2-1100 (Part V)
31 Jul 2003
EXAMPLE PROBLEM V-4-2 (Concluded))
Step 2; Compute required sectional fill volume.
Translate the aligned design profile (from Step 1) 30 m seaward to obtain the final design
profile. Compute volume difference between the existing and final design profile between the 1.5-m
berm elevation and the 5.5-m depth of closure. This volume represents the total sectional fill volume
required to advance the dry beach 30 meters seaward at the msl datum. The total sectional fill volume
can vary significantly from reach to reach. In the present example, the total sectional fill volume is
298 m3/m and is illustrated in Example Figure D. Approximately one-third of the total sectional volume
was required to offset the sediment deficit associated with the over-steepened erosion-stressed condition
of the existing profile.
D
2
Existing Profile
Final Design Profile (translated 30 m seaward)
0
30 m
Final Design Volume
-2
-4
-6
0
100
200
300
400
500
Distance form Baseline, m
where
B = the design berm elevation
DC = the depth of closure
Equation V-4-6 is derived by computing the area of the parallelogram formed by translating the existing
profile a distance W as shown in Figure V-4-14. Example V-4-3 illustrates this calculation.
V-4-42
Beach Fill Design
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