A02.Attachment_B_(400_-_IL_-RR5_-_2004).pdf
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- Rip Rap
- Solicitation number
- W912EK18R0025
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Gradation Curves
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| A02.Attachment__A_(Map_of_USACE_Recommended_Riprap_Delivery_Site).pdf | ||
| A22.W912EK18R0025.pdf |
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Text version
PROJECT ___________________________________
15 50 - 15 DATE ______________________________________
PERCENT FINER CONTRACT __________________________________
BY WEIGHT (SSD)
ENG Form 4055
LIMITS OF STONE
WEIGHTS IN POUNDS
400 - 250 175 - 90
2.2
2.4
2.6
2.8
3.2
2.2
2.4
2.6
2.8
3.2
ASSUMING A SHAPE MIDWAY BETWEEN A SPHERE AND A CUBE
SIZE OF STONES IN INCHES
SPEC
IFIC
G R
A V
ITY
SPEC
IFIC
G R
A V
ITY
90 80 70 60 50 40 30 20 9 8 7 6 5 4 3 2 1
100 0
110100
10000
PER
C
EN
T FIN
ER
B
Y W
EIG
H
T
PER
C
EN
T C
O A
R
SER
B Y
W
EIG
H T
WEIGHT OF STONES IN POUNDS
RIPRAP GRADATION CURVES
3848 44 40 3436 32 30 28 26 24 22 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3
RIPRAP GRADATION TALLY CHART
Use to record individual stone weights
Total Weight of Gradation Test Sample1 in pounds: ___________ = “X”1
Column ► A B C D E F G2
Weight Ranges ► < 15 pounds
15 - 49 pounds
50 - 89 pounds
90 - 174 pounds
175 - 249 pounds
250 - 400 pounds
400 + pounds
Record Individual
Stone Weights
Total of Individual Weights in Column ►
______lb
Total Cumulative Weight Finer Than Next Weight
Range ►
(A)
(A+B)
(A+B+C)
(A+...+D)
(A+...+E)
(A+...+F)
(A+...+G)
Percent Finer By Weight
(Total Cumulative
Weight of each Column, Divided by Total
Weight of Sample “X”3)
(A) X
(A+B)
(A+B+C)
(A+...+D)
(A+...+E)
(A+...+F)
(A+...+G)
1. - Recommended test sample size is approximately 40 times the top-size weight ≈ 16,000 pounds.
2. - 100% of the sample will be finer by weight than the heaviest individual stone weight plus one pound. Heaviest weight plus one will be plotted on the 100% Finer by Weight line of ENG Form 4055 - RIPRAP GRADATION CURVES. The totaled weights of all columns A - G should equal the initial test sample weight “X”.
3. - The Cumulative Percent Finer By Weight number for each column is plotted on ENG Form 4055 - RIPRAP GRADATION CURVES chart, on the weight increment line of the next column's weight range low number, i.e. column B cumulative percent would be plotted on the 50 pound line of the 4055 chart.
| 400 - IL - RR5 with Tally |
| 400 - IL -RR5 - 2004 |
| Weights |
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