section. However, the output for these calculations is threefold. The first set of
normal depth tables show the results of the normal depth, or other, calculations
without riprap. The next set of output, starting with "DETERMINE RIPRAP SIZE FOR A
GIVEN WATER DISCHARGE,"
describes the results of the riprap calculations
using the hydraulic parameters shown in the first set of tables. The third
set of output is a second set of normal depth calculations showing the
hydraulic parameters calculated with the given riprap in place. The
parameters written to the sediment transport, SAM.sed, input file are taken
from this second set of normal depth calculations.
TABLE
8-1.
CALCULATE NORMAL DEPTH;
COMPOSITE PROPERTIES BY ALPHA METHOD.
**** N
Q
WS
TOP COMPOSITE
SLOPE COMPOSITE VEL
FROUDE
SHEAR
ELEV
WIDTH
R
n-Value
NUMBER
STRESS
CFS
FT
FT
FT
ft/ft
FPS
#/SF
**** 1
13500.
8.68
174.7
8.36 0.001700 0.0255
9.88
0.60
0.89
TABLE 8-4. HYDRAULIC PARAMETERS FOR SEDIMENT TRANSPORT
Q STRIP STRIP
---EFFECTIVE---
SLOPE
n-
EFF.
Froude
TAU
NO
NO
Q
WIDTH
DEPTH
VALUE
VEL.
NO
Prime
CFS
FT
FT
FT/FT
FPS
#/SF
1
1
13500.
160.5
8.37 0.001700 0.0241 10.05
0.61
0.887
TABLE
8-5.
EQUIVALENT HYDRAULIC PROPERTIES FOR OVERBANKS AND CHANNEL
DISTRIBUTED USING CONVEYANCE
N
STRIP
HYDRAULIC
MANNING .........SUBSECTION...........
NO
RADIUS
n-VALUE DISCHARGE
AREA
VELOCITY
ft
cfs
sqft
fps
1
1
7.64
0.0241
13500.00
1366.50
9.88
DETERMINE RIPRAP SIZE FOR A GIVEN WATER DISCHARGE
USING GRADED RIPRAP TABLES FROM EM 1110-2-1601
LAYER
D30CR
DMAXRR
D30
D50
D90
WIDTH
CY/FT
TONS/FT
$/FT
#
FT
IN
FT
FT
FT
FT
6
0.89
24.00
0.97
1.17
1.40
188.01
13.927
0.714
0.00
RIPRAP SIZE
= LAYER# 6
DMAX, INCHES
=
24.
VELOCITY, FT
=
7.79
VSS/VAVG
=
1.503
BEND RADIUS,FT =
500.
TOP WIDTH, FT
=
175.
R/W
=
2.861
VERT VEL CORR, Cv =
1.192
LOCAL DEPTH, FT=
10.74
DESIGN DEPTH
=
8.59
SAFETY FAC, Sf =
1.10
STABILITY COEF, Cs =
0.300
THICKNESS, IN =
24.00
THICKNESS COEF, Cv =
2.000
SIDE SLOPE
=
2.00
SIDE SLOPE CORR, K1=
1.180
SP.GR. RIPRAP =
2.65
POROSITY, %
=
38.00
CHANNEL TYPE
=
NATURAL
COST PER FOOT,$/FT =
0.00
TABLE 8-1. CROSS SECTION PROPERTIES
#
STATION
ELEV
ROUGHNESS N-VALUE :
GROUND
: DELTA Y
RIPRAP
FT
FT
HEIGHT EQUATION :SLOPE
ANGLE :
FT
Dmax*[ ]
1
-100.0
15.00
1.400
STRICKLE
-2.00
-26.6
-15.00
1.0
108
Chapter 6
Input Requirements and Program Output for SAM.hyd
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