HomeMy WebLinkAbout200.00PRECAST BASE SECTION
SEE NOTE 1
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 20". 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 FEET.
4.THE FRAME AND GRATE MUST 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 OPENING 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
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
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
26",
S
E
E
N
O
T
E
6
22
"
,
SE
E
N
O
T
E
6
3"4"44"21" MIN.4" MI
N. (
T
Y
P.)
#3 BAR EACH SIDE
#3 BAR EACH WAY
#3 BAR EACH CORNER
#3 BAR EACH
CORNER 18" MIN.
#3 BAR HOOP
ALTERNATIVE PRECAST BASE SECTION
CATCH BASIN TYPE 1
STD. PLAN - 200.00
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