HomeMy WebLinkAbout235.00"FLOW-THROUGH" SYSTEM SHOWN SOLID.
DESIGNS FOR "FLOW BACKUP" SYSTEM AND
PARALLEL TANKS SHOWN DASHED
1.THIS DETAIL IS A SCHEMATIC REPRESENTATION ONLY. ACTUAL CONFIGURATION WILL VARY DEPENDING ON SPECIFIC SITE CONSTRAINTS AND APPLICABLE
DESIGN CRITERIA.
2.MINIMUM TANK DIAMETER IS 36 INCHES.
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.ACCESS RISERS REQUIRED WITHIN 50 FEET FROM ANY LOCATION IN THE DETENTION TANK AND WITHIN 5 FEET OF EACH TERMINAL END. ANY LOCATION WITHIN
THE DETENTION TANK SHALL HAVE A DIRECT LINE OF SIGHT FROM AN ACCESS POINT, UNOBSTRUCTED BY ANY RESTRICTIONS SUCH AS A WALL OR BAFFLE.
5.H-20 LIVE LOADS MUST BE ACCOMMODATED FOR TANKS LYING UNDER PARKING AREAS, ROADWAYS, AND ACCESS ROADS.
6.BEDDING OF THE PIPE SHALL BE IN ACCORDANCE WITH STD. PLAN 220.00.
7.PRIOR TO STARTUP, DETENTION TANK SHALL PASS LEAK TEST.
8.PIPE MATERIAL, JOINTS, AND PROTECTIVE TREATMENT FOR TANKS SHALL BE IN ACCORDANCE WITH SECTIONS 7-04 AND 9-05 OF THE WSDOT/APWA STANDARD
SPECIFICATION.
9.ALL TANK ACCESS OPENINGS MUST BE READILY ACCESSIBLE BY MAINTENANCE VEHICLES.
10.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.
11.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
NOTES:
SECTION A
PLAN
INLET PIPE
(BACKUP SYSTEMS,
WHERE ALLOWED)
INLET PIPE
(FLOW THROUGH)
FLOW
2' MIN.
36" MIN.
36" MIN. CONNECTOR PIPE
SAME SIZE AS INLET PIPE,
12" MIN. DIA.
TYPE 2 CATCH BASIN (CB)
REQUIRED FOR FLOW THROUGH
SYSTEM ONLY PER STD. PLAN 201.00
OPTIONAL PARALLEL TANK
ACCESS RISERS, SEE NOTE 4
ACCESS RISERS PER
STD. PLAN 235.10
CONTROL
STRUCTURE WITH
SOLID LOCKING LID
2' MAX.
50' MAX.100' MAX.
6" SEDIMENT STORAGE
2' MIN.
2' MIN.
2" MIN. DIA. AIR VENT PIPE
WELDED TO TANK (REQUIRED
IF NO ACCESS RISER ON TANK)
ACCESS RISERS, SEE
STD. PLAN 235.10
36" MIN. DIA. (TYP.)
CONTROL STRUCTURE (FROP-T
SHOWN), MIN. 54" DIA. TYPE 2 CB
PER STD. PLAN 237.00
DETENTION TANK
(SIZE AS REQUIRED)
A
OUTLET PIPE
FINISH GRADE
2' MIN.
SEE NOTE 10 (TYP.)
SEE NOTE 10
(TYP.)
FLOW RESTRICTOR PER STD. PLAN 237.00
6" MIN.
FLOW
5' MAX.
TERMINAL END
TYPICAL DETENTION TANK
STD. PLAN - 235.00
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
DocuSign Envelope ID: 3B1B34D3-7E0A-476C-ADB3-4329FFE0C108
8/13/2020 | 8:48 AM PDT