1987-12-01_PERMIT FILE - C1981017 ‎(165)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Date: 12/1/1987
• Doc Name: David E. Fleming Company Prepartation Plant Area Surface Drainage Plan
• Section_Exhibit Name: Chapter II Attachment 3 to Appendix II-B-7
• Media Type: D
• Archive: No

RIPRAP SIZING CHART
RIPRAP DESIGNATION AND d50 SIZE
20
co
LL
15 VH(24') '
>- I 1-108"j '
.. O
Lu 10 , i I M(12�)
I
L( 8'
VL(6')
� l i �
I
14
I
0
0 .05 .10 .15 .20 .25
CHANNEL SLOPE S
SIZING DERIVED FROM FORMULA:
Ol
W V$ 0.17 _ V$ 0.1T 2
= 5.8 OR d 50
d 0.5 (S —1) 0.66 �7.5 8
so s
ASSUMING SPECIFIC GRAVITY OF RIPRAP, SS = 2.5
•
E I
Z REFERENCE: DRAINAGE CRITERIA MANUAL, URBAN DRAINAGE AND FLOOD CONTROL
o
c = DISTRICT-69, DENVER, MAJOR DRAINAGE SECTION.
0
0 it Golder Associates