20150023 Ver 2_Permit Drawings_20150914

Notes:
1. Box to be in accordance with NC DOT Standards. (840.01-.02) Box
to be enlarged to accommodate larger or multiple pipes as required.
fL RUBBER
2. Frame and grate to be U.S. Foundry & MFG. Corp. 4139 Frame &
IED TO TOP
6429 Grate or approved equal.
� -24" DIA '
3. All sediment, wet, mucky, or yielding soil materials shall be removed
-
and replaced with compacted select fill prior to placing base course.
..... • • • • . • • • • • • • • • • • • +
4. All drop inlets in asphalt surfaces shall have 2' wide concrete collars
1/2" DIA.
around inlet grate.
.. . ..... STAINLESS STEEL
..
... ,:; ,U
• BOLT
�� 3/4" RAD.
•3"
Y. PLACE "U" BOLT
,� ��.
12" FROM TOP
OF MH
r .....................�
ALL JOINTS TO BE T & G
°. �' ,�t✓J�.•..:: �W /PREFORMED BUTYL RUBBER
Gabion Mattress Installation Notes:
(MASTIC) GASKET MEETING
-- z•'S D :.� AASHTO M -198, ASTM. C -990,
1. The purpose of the gabion mattress is to meet the aquatic life passage requirement
... ;__.. �,; ;•
FED SPEC SS -S -00210 (210A)
for the stream impact. The gabion is to be installed at the some time as the
-
junction manhole.
2. The gabion mattress is to consist of rip rap with a 4" maximum diameter. The wire
.. ,�.�•; PRECAST MANHOLE TO MEET
mesh to encase the rip rap shall have 3" x 3" openings, and be corrosion resistant
REQUIREMENTS OF ASTM.
meeting ASTM 974 -97.
C478, AASHTO M -199
3. The gabion shall be installed flush to the 12" drop invert, and sloped at 5:1 to the
-" A
bottom of the junction manhole.
4. Install the wire mesh with a minimum overlap of 12 ", and secure overlap with plastic
-
zip ties or corrosion resistant wire meeting ASTM 974 -97.
F�w
IN a' 5:1 GABION MATTRESS
r -4" DIA. RIP RAP
•.
a + -3 "x3" MESH OPENINGS
a. -MESH TO BE CORROSION
RESISTANT MEETING
ASTM 974 -97
ATTRESS
'SASE
?TH(CIA. RIP RAP
"•
PLACE COMPACTED CORROSION
No. 57 STONE RESISTANT
FtiVV
MESH
—
AROUND ALL PIPES /
/
\ pUT
�i
Y 5'1 12'I,IRfDP FROM INV
/i{ TO 11$ID�OTTOM
EXTENDED BASE ON
ALL MANHOLES
Isometric View
Section View
Sia"\�+'lt` eLt 04'u
Drainage Junction Detail
A60 V v� -`c0 rixw deb w ^
Not to Scale
a"A at\)Ckk,L QaS4x",