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OUTLET STRUCTURE NOTES
1. METAL PARTS: CORROSION RESISTNAT. NON -GALVANIZED
PARTS PREFERRED. GALVANIZED PIPE PARTS TO HAVE
ASPHALT TREATMENT.
2. FRAME AND LADDER OR STEPS OFFSET SO:
2.1. CLEANOUT GATE IS VISIBLE FROM TOP.
2.2. CLIMB -DOWN SPACE IS CLEAR OF RISER AND CLEANOUT
GATE.
3. PROVIDE AT LEAST ONE 3" X 0.090 GAGE SUPPORT BRACKET
ANCHORED TO CONCRETE WALL. (MAXIMUM T VERTICAL
SPACING)
4. REFER TO CITY OF RENTON FLOW CONTROL STRUCTURE
STANDARD DETAIL FOR ADDITIONAL NOTES
54-INCH CONTROL STRUCTURE
SCALE: 1 "=2'
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NAL E 253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB
07/21 /2025
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DocuSign Envelope ID: 3B1 B34D3-7EOA-476C-ADB3-4329FFEOC108
ADDITIONAL LADDER RUNGS (IN SETS) TO
2' MIN. CLEARANCE TO
ALLOW ACCESS TO TANKS OR VAULTS
ANY PORTION OF FLOW RESTRICTOR
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WHEN CATCH IS FILLED WITH WATER
TEE INCLUDING ELBOWS
/
REMOVABLE WATERTIGHT
COUPLING OR FLANGE
2" MIN.
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ELBOW RESTRICTOR,
SEE DETAIL AND NOTE 10
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ANGLE AS
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NECESSARY,
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SEE NOTE 7
6" MIN.
6" MAX.
2' MIN,
PLATE WELDED TO ELBOW WITH PLAN VIEW
ORIFICE AS SPECIFIED, SEE NOTE 3
ELBOW RESTRICTOR DETAIL
ELEVATION PER PLANS
FRAME & SOLID COVER MARKED "DRAIN" WITH
12" MIN. UNDER LOCKING BOLTS PER STD. PLANS 204.40 AND 204.50
PAVEMENT
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16" MAX.
VERTICAL BAR GRATE FOR
SECONDARY INLET
6" MIN.
LESIUGN WATER
ELBOW RESTRICTOR, FACE
SEE DETAIL AND NOTE 10 HANDHOLDS, STEPS, OR LADDER
PIPE SUPPORTS, SEE NOTE 6 " (TYP.)
1.5 x D SEE NOTE 9 (TYP.)
MIN. MIN. —
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OUTLET PIPE, SEE INLET PIPE
NOTES 1 & 5 2'
o MIN. SHEAR GATE WITH CONTROL ROD FOR
INVERT AND CLEANOUT/DRAIN (ROD BENT AS REQUIRED
ELEVATION PER PLANS FOR VERTICAL ALIGNMENT WITH COVER)
12" SECTION OF PIPE ATTACHED BY 2 PER STD. PLAN 237.30
GASKETED BAND TO ALLOW REMOVAL
MIN.
12" 1
WELDED RESTRICTOR PLATE WITH
ORIFICE DIA AS SPECIFIED, SEE NOTE 10
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1. USE A MIMIMUM OF A 54" DIAMETER TYPE 2 CATCH BASIN.
2. OUTLET CAPACITY: 100-YEAR DEVELOPED PEAK FLOW.
3. METAL PARTS PREFERRED TO BE STAINLESS STEEL, ALUMINIZED STEEL, OR ALUMINUM. ALL OTHER STEEL PARTS MUST BE GALVANIZED WITH TREATMENTS 1, 2, OR 5.
4. FRAME AND LADDER OR STEPS OFFSET SO:
A. CLEANOUT GATE IS VISIBLE FROM TOP.
B. CLIMB -DOWN SPACE IS CLEAR OF RISER AND CLEANOUT GATE.
C. FRAME IS CLEAR OF CURB.
5. IF METAL OUTLET PIPE CONNECTS TO CEMENT CONCRETE PIPE: OUTLET PIPE TO HAVE SMOOTH O.D. EQUAL TO CONCRETE PIPE I.D. LESS 1/4".
6. PROVIDE AT LEAST ONE 3" X .090 GAGE SUPPORT BRACKET ANCHORED TO CONCRETE WALL. (MAXIMUM 3'-0" VERTICAL SPACING).
7. LOCATE ELBOW RESTRICTOR(S) AS NECESSARY TO PROVIDE MINIMUM CLEARANCE AS SHOWN.
8. LOCATE ADDITIONAL LADDER RUNGS IN STRUCTURES USED AS ACCESS TO TANKS AND VAULTS TO ALLOW ACCESS WHEN CATCH BASIN IS FILLED WITH WATER.
9. WHEN CONNECTING TO A NEW PIPE, USE A FLEXIBLE CONNECTOR (KOR-N-SEAL BOOT WITH CORRUGATED PIPE ADAPTER OR APPROVED EQUAL). WHEN CONNECTING
TO AN EXISTING PIPE, USE A FABRICATED SAND COLLAR OF THE SAME MATERIAL AS THE CONNECTING PIPE.
10. IF TEE SECTION IS USED ONLY FOR SPILL CONTROL, THEN ELBOW RESTRICTORS AND RESTRICTOR PLATES WITH ORIFICES ARE NOT REQUIRED.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 237.00
c PUBLIC WORKS FLOW CONTROL STRUCTURE -
�I� DEPARTMENT RESTRICTOR TEE
CITY OF RENTON FLOW CONTROL STRUCTURE
DATE
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