19-Detail Sheets-402-Details

LaBeLLa
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SECTION 'A -A'
RAP APRON
NOTES:
1) L = LENGTH OF THE RIPRAP APRON.
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE LENGTH
OF FLARED END SECTION (FES).
3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT LESS
THAN 18 INCHES.
4) A FILTER BLANKET OR FILTER FABRIC MUST BE INSTALLED
BETWEEN THE RIPRAP AND SOIL FOUNDATION (NCDOT TYPE 2).
PIPE OUTLET TO FLAT AREA NO WELL-DEFINED CHANNEL
NTS
TRENCH WIDTH
GRADE
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ANTI —SEEP COLLAR
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ANTI —SEEP COLLAR.
CLASS B CONCRETE
PLAN VIEW
Ll
SECTION 'A -A'
PIPE OUTLET TO WELL-DEFINED CHANNEL
NTS
ANTI -SEEP COLLAR
NTS
10
TRENCH
WIDTH
SECTION A —A
NOTES:
1) Ll = LENGTH OF THE RIPRAP APRON.
2) L2 = RIPRAP TO BE INSTALLED UNDERNEATH 1/3 THE LENGTH
OF FLARED END SECTION (FES).
3) d = 1.5 TIMES THE MAXIMUM STONE DIAMETER BUT NOT
LESS THAN 6 INCHES.
4) IN A WELL—DEFINED CHANNEL EXTEND THE APRON UP THE
CHANNEL BANKS TO AN ELEVATION OF 18 INCHES ABOVE THE
MAXIMUM TAILWATER DEPTH OR TO THE TOP OF THE BANK,
WHICHEVER IS LESS.
5) A FILTER BLANKET OR FILTER FABRIC MUST BE INSTALLED
BETWEEN THE RIPRAP AND SOIL FOUNDATION (NCDOT TYPE 2).
ILILI\
FABRIC
615 St. George Square
Suite 300
Winston-Salem, NC 27103
336-842-4065
C#0430
labellapc.com
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© 2019 LaBella Associates
ALAMANCE
AGGREGATES, LLC
Mr. Chad Threatt, VP
Alamance County Mine
NO: DATE: DESCRIPTION:
REVISIONS
PROJECT NUMBER:
2180544
DRAWN BY:
KCG/ATC
REVIEWED BY: PAS
ISSUED FOR:
REVIEW
DATE:
5/8/19
DRAWING NAME
DRAWING NUMBER:
SITE DETAILS
C402