HomeMy WebLinkAboutC403 - STORM SEWER PROFILESN
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TOPOGRAPHIC NOTE
THE HORIZONTAL DATUM OF THE EXISTING TOPOGRAPHY IS
BASED INDIANA STATE PLANE COORDINATES, NAD83. THE
ELEVATIONS OF THE EXITING TOPOGRAPHY ARE GIVEN IN THE
NORT AMERICAN VERTICAL DATUM OF 1988 (NAVD 188).
BENCHMARKS
TBM I1 (PT 9176)
MAG NAIL WITH "SEA GROUP" WASHER. LOCATED WITHIN OLD
MERIDIAN RIGHT-OF-WAY IN EXISTING ASPHALT WALK.
ELEV: 862.95
N: 1721917.93
E: 193034.68
TBM #2 (PT 9003)
MAG NAIL. LOCATED IN NORTHEAST CORNER OF EXISTING
PARKING LOT.
ELEV: 858.40
N: 1721942.44
E: 193348.94
TBM #3 (PT 9001)
MAG NAIL. LOCATED WITHIN OLD MERIDIAN RIGHT-OF-WAY
ACROSS FROM SOUTH PROPERTY LINE BY ROAD MEDIAN.
ELEV: 862.12
N: 1721725.13
E: 192848.76
AQUA-SWIRLTM PCS SPECIFICATION NOTES 10-23-15
1. Manufacturer shall be responsible for complete
assembly of watertight Swirl Concentrator.
2. Polymer Coated Steel (PCS) Swirl Concentrator
shall be fabricated from polymer pre -coated steel
sheet for corrugated steel pipe, and shall comply
with ASTM A 760 and ASTM A 742.
3. Stub outs and internal components shall be
supplied by manufacturer and MIS welded using
accepted welding practices.
4. Manufacturer shall supply direct access to Swid
Concentrator via 30-inch ID riser(s). If necessary
to accommodate field adjustments, Contractor may
cut Riser to match finish grade. The exposed
metal of the cut riser must be recoated using the
touch up kit supplied with each PCS unit. If
necessary to extend deer, Contractor should use
adjusting rings to bring top of structure to grade.
5. Contractor shall supply pipe couplings to and
ham Swirl Concentrator, which shall be Mar -Mac,
Femco, or Mission style flexible boot with stainless
steel tension bands and shear guard.
6. Contractor shall prepare excavation and off-
load Swid Concentrator. Contractor is responsible
for bedding and backfill around Swirl Concentrator
as detailed on site plan (see notes 11 and 12).
Any exposed metal (scratches or other damage to
the polymer coating) must be recoated using the
touch up kit supplied with each PCS unit prior to
installation or placement of bacld'III.
7. Manufacturer shall supply standard manhole
fiame(s) and cover(s) (Traffic rated HS-25).
8. Where traffic loading (HS-25) is required or
anticipated, a 4-foot diameter, tall thick
reinforced concrete pad must be placed over the
Swirl Concentrator to support and level the
manhole frame. The top of riser pipe must be
wrapped with compressible expansion joint
material to a minimum 1-inch thickness to allow
transfer of wheel leads from manhole cover to
concrete slab. Manhole cover shall bear on
concrete slab and not on riser pipe. The concrete
slab shall have a minimum strength of 3,000 psi
and be reinforced with #4 reinforcing steel (per
drawing). Minimum cover over reinforcing steel
shall be 1-inch. Top of manhole cover and
concrete slab shall be level with finish grade.
9. Unless other traffic bartiers are present,
bollards shall be placed around access risers in
non -traffic areas to prevent inadvertent loading by
maintenance vehicles. Sample of typical bollard
installation detail and recommended locations of
bollards around the Swid Concentrator can be
provided upon request.
10. Where high groundwater elevations are
present a anticipated, Contractor shall supply
concrete anti -Floatation pad underneath and
poured over the octagonal base plate of the swirl
(see Anti -Floatation Base Detail) to prevent
buoyancy and base plate deflection (details, if
necessary, available upon request).
11. Excavation and Bedding - The trench and
trench bottom shall be constructed In accordance
with ASTM A 798 Section 5, Trench Excavation,
Section 6, Foundation, and Section 7, Bedding.
The PCS Swid Concentrator shall be installed on a
stable base consisting of at least 6-inches of fine,
readily compacted soil or granular fill material, and
compacted to 95% proctor density. Bedding shall
not contain stones retained on a 3-inch ring,
frozen lumps, highly plastic clay, organic material,
corrosive material, or other deleterious foreign
materials. All required safety precautions for Swid
Concentrator installation are the responsibility of
the Contractor and shall be per OSHA approved
methods.
12. BackfIll Requirements - Backfill materials shall
be fine, readily compacted soil or granular fill
material, and compacted to 90% proctor density.
Processed granular materials with excellent
structural characteristics are preferred. Coarse
grained soils of USCS Groups GW, GP, GM, GC,
SW, and SP as described in ASTM D 2487 are
generally acceptable materials when compacted to
90% proctor density. Backfill shall not contain
stones retained on a 3-inch ring, frozen lumps,
highly plastic clay, organic material, corrosive
material, or other deleterious foreign materials.
Backfilling shall conform to ASTM A 798, Section
10, Structural Backfill Placement. Backfill shall be
placed in 6 to 12 inch layers or "lifts" and
compacted before adding the need lift. Backnll
shall extend at least 18 inches outward from Swid
Concentrator and for the full height of the Swid
Concentrator (including riser(s)) extending laterally
to undisturbed soils.
N
RELEASED FOR CONSTRUCTION
0 15 30 60
Subject to compliance with all regulations
Of State and Local Codes o
City ofCarmel SCALE: 1 IN = 30 FT (H)
A��1 (V 1 IN = 5 FT (V)
DATE: 07/22/19
870
865
855
850
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STORM STRUCTURE DATA TABLE
STIR. N0.
STRUCTURE/CASTING
T.C. ELEV.
INCOMING PIPE DATA
(DIRECTION)AFROM STRUCTURE]
OUTGOING PIPE DATA
(DIRECTION)AFROM STRUCTURE]
OUTGOING
PIPE L.F.
OUTGOING PIPE
GRADE (7,)
CONNECT TO
STRUCTURE
REMARKS
1
TYPE C/R-1772
856.73
24" HDPE 851.02 (W) [UD]
EX 12" RCP 851.02 (NE) [EX1]
32'
0,34%
EX1
CONNECT EXISTING 12" RCP WITH
6" ORIFICE. VERIFY EXISTING
ELEVATIONS
2
END SECTION
24" HDPE 851.15 (N) [UD]
21'
0.48%
UD
REQUIRES DEBRIS GUARD (D-12)
3
TYPE C/R-1772
861.55
12" HDPE 856.00 (W) [4]
12" HDPE 856.00 (E) [EX4]
259'
1.247
EX4
CONNECT 6" PVC DRAIN FROM
_-PORTCOC E 50
4
TYPE C/R-1772
861.97
12" HDPE 856.50 (E) [3]
59'
0,85%
3
CONN CT 10 PVC IcROM OOF
AND YARD DRAINS 856.70
5
TYPE C/R-4342
857.50
15" HDPE 853.00 (N) [6]
EX 24" RCP 852.65 (S) [EX4]
27'
0.74%
EX4
WITHIN RAIN GARDEN
6
TYPE C/R-4342
857.35
15" HDPE 853.35 (S) [5]
108'
0.32%
5
WITHIN RAIN GARDEN
WQ
AS-7/R-1772
858.23
EX 24" RCP 852.41 (W) [EX4]
EX 24" RCP 852.41 (E) [EX3]
61'
0.48%
EX3
CONNECT AS-7 UNIT TO EXISTING
24' RCP BETWEEN EXISTING
STRUCTURES 4 AND 3
UD
CONTECH CMP
SYSTEM
24" HDPE 851.05 (S) [21
24" HDPE 851.05 (E) [1]
12'
0.27%
1
CONTECH PERFORATED CMP
UNDERGROUND DETENTION SYSTEM
NOTE: THE STORM SEWER SYSTEM SHALL BE CONSTRUCTED PER DESIGN SPECIFIED AND AS APPROVED BY THE CITY OF CARMEL ON THE FINAL APPROVED CONSTRUCTION PLANS. DEVIATIONS
FROM THE APPROVED DESIGN SHALL ONLY BE PERMITTED DUE TO SPECIAL CIRCUMSTANCES OR DIFFICULTY DURING CONSTRUCTION AND WILL REQUIRE PRIOR FIELD APPROVAL FROM A
DESIGNATED REPRESENTATIVE OF THE CITY OF CARMEL IN ADDITION TO SUPPLEMENTAL APPROVAL BY THE DESIGN ENGINEER. AN EXPLANATION OF ANY SUCH DEVIATION SHALL BE
INCLUDED AS A REQUIREMENT ON AS-BUILT/RECORD DRAWINGS SUBMITTED FOR RELEASE OF PERFORMANCE GUARANTEES. APPROVED DESIGN SLOPES IDENTIFIED AS GENERATING
VELOCITIES OF 2.5 FPS OR LESS OR 10 FPS OR GREATER (AT FULL FLOW CAPACITY) SHALL REQUIRE AS -BUILT CERTIFICATION AT THE TIME OF CONSTRUCTION, PRIOR TO BACKFILLING
THE PIPE. THE CONTRACTOR IS INSTRUCTED TO AS -BUILT EACH SECTION OF STORM PIPE AS IT IS BEING INSTALLED TO ENSURE COMPLIANCE WITH THE DESIGN PLANS AND AS
APPROVED BY THE CITY OF CARMEL.
ALL STORM SEWER CASTINGS ARE TO BE STAMPED WITH THE APPROPRIATE MARKINGS PER THE HAMILTON COUNTY SURVEYORS OFFICE. SEE TRENCH BACKFILL DETAIL C602
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