HomeMy WebLinkAbout200.304"25"PRECAST BASE SECTION
NOTES:
1.AS ACCEPTABLE ALTERNATIVES TO THE REBAR SHOWN IN
THE PRECAST BASE SECTION, FIBERS (PLACED IN
ACCORDANCE WITH STANDARD SPECIFICATION 9-05.50(9)),
OR WIRE MESH HAVING A MINIMUM AREA OF 0.12 SQUARE
INCHES PER FOOT SHALL BE USED WITH THE MINIMUM
REQUIRED REBAR SHOWN IN THE ALTERNATIVE PRECAST
BASE SECTION. WIRE MESH SHALL NOT BE PLACED IN THE
KNOCKOUTS. AS AN ACCEPTABLE ALTERNATIVE TO THE
REBAR SHOWN IN THE RECTANGULAR ADJUSTMENT
SECTION, WIRE MESH HAVING A MINIMUM AREA OF 0.12
SQUARE INCHES PER FOOT MAY BE USED.
2.THE KNOCKOUT DIAMETER SHALL NOT BE GREATER THAN
18". KNOCKOUTS SHALL HAVE A WALL THICKNESS OF 2"
MINIMUM TO 2.5" MAXIMUM. PROVIDE A 1.5" MINIMUM GAP
BETWEEN THE KNOCKOUT WALL AND THE OUTSIDE OF THE
PIPE. AFTER THE PIPE IS INSTALLED, FILL THE GAP WITH
JOINT MORTAR IN ACCORDANCE WITH STANDARD
SPECIFICATION 9-04.3.
3.THE MAXIMUM DEPTH FROM THE FINISHED GRADE TO THE
LOWEST PIPE INVERT SHALL BE 5'.
4.THE FRAME AND GRATE SHALL BE INSTALLED WITH THE
FLANGE DOWN.
5.THE PRECAST BASE SECTION MAY HAVE A ROUNDED FLOOR,
AND THE WALLS MAY BE SLOPED AT A RATE OF 1H:24V OR
STEEPER.
6.THE STRUCTURE OPENING DIMENSIONS SHALL BE
MEASURED AT THE TOP OF THE PRECAST BASE SECTION.
7.ALL PICKUP HOLES SHALL BE GROUTED FULL AFTER THE
INLET HAS BEEN PLACED. USE GROUT TYPE 2 FOR
NON-SHRINK APPLICATIONS IN ACCORDANCE WITH
STANDARD SPECIFICATION 9-20.3(2).
8.ALL GRADE RINGS AND CASTINGS SHALL BE SET IN MORTAR
IN ACCORDANCE WITH STANDARD SPECIFICATION 9-04.3.
THEN APPLY MORTAR TO INSIDE AND OUTSIDE OF ALL
JOINTS, RINGS, RISERS, AND FRAMES.
9.MORTAR SHALL BE MIXED AND APPLIED PER
MANUFACTURER'S DIRECTIONS.
10.FRAME SHALL BE ADJUSTED TO PAVEMENT GRADE BY
TAPPING UNTIL FRAME IS FLUSH WITH PAVEMENT AS
DETERMINED WITH A STRAIGHT EDGE OF SUFFICIENT
LENGTH.
11.ALL MORTAR JOINTS SHALL BE TRIMMED FLUSH AND REMAIN
VISIBLE UPON COMPLETION.
FRAME AND VANED GRATE
RECTANGULAR ADJUSTMENT SECTION
4" MI
N. (
T
Y
P.)
26",
SEE
N
O
T
E
6
22
"
,
SE
E
N
O
T
E
6
SEE NOTE 1
ALTERNATIVE PRECAST BASE SECTION
#3 BAR EACH SIDE
TOP AND BOTTOM
#3 BAR EACH CORNER
ONE #3 BAR
ACROSS BOTTOM
#3 BAR EACH
CORNER 18" (MIN.)
#3 BAR HOOP
PIPE ALLOWANCES
PIPE MATERIAL
MAXIMUM
INSIDE
DIAMETER
REINFORCED OR PLAIN
CONCRETE 12"
ALL METAL PIPE 15"
CPSSP* ,
STD. SPEC. 9-05.20 12"
SOLID WALL PVC,
STD. SPEC. 9-05.12(1)15"
PROFILE WALL PVC,
STD. SPEC. 9-05.12(2)15"
* CORRUGATED POLYETHYLENE STORM
SEWER PIPE
34"
24"
30
"
20
"
5"
5"
1", 2", 4", 6", 12", OR 24"
ONE #3 BAR HOOP FOR 6" HEIGHT
INCREMENT (SPACED EQUALLY),
SEE NOTE 1
CONCRETE INLET
STD. PLAN - 200.30
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT