STORMWATER BUBBLE UP PIT

Transcription

1 Cast iron swing grate in cast iron frame A Nominal 90 mm inlet SECTION A x ID concrete chamber. Available chamber depths 400mm or 600mm deep CHAMBER PLAN Stormwater pipe House Chamber location in vehicle cutdown Grass Berm K&C Roadway K&C SITE PLAN Gutter House Downpipe GL(Driveway) Flow Stormwater Pipe 700 Min. Boundary 450 M in. 500 Vehicle Crossing Roadway 800mm x ID Concrete Chamber for 100Ø outlet Single catchpit generally as Drawing D6.9 for Ø outlet. Double catchpit for 225Ø outlet as Drawing D6.8 upvc SN16 in berm LONGITUDINAL SECTION Min. Min deep STORMWATER BUBBLE UP PIT D4.1

2 Boundary Sweated spigot with 'kerb adaptor' 20 MPa Concrete 0.3m to 1.0m Trim adaptor to make flush with face of kerb Existing 35 min. Kerb and Channel 100 Ø SN16 upvc 25 min. Mountable Option SureCast Metals HCC Kerb Adaptor or approved similar KERB ENTRY Cutout - mortar infill 20MPa concrete To Fit 1000 min. Channel Invert Depressed Kerb at Vehicle Crossing Kerb Outlet VERTICAL KERB Private drainage system Road Reserve Boundary if present Kerb and channel Reinstate kerb with epoxy mortar Sealed end cap 100mm SN16 upvc pipe at Grade 1 in 100 Cast galvanised steel pipe kerb connection to channel invert LONGITUDINAL SECTION KERB CONNECTION D4.2 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016 NOTE: DRAWINGS D3.4.2 AND D4.2 HAVE BEEN COMBINED

3 DN100 SN16 upvc Factory "T" Glued or screwed DN20 holes at 100mm spacings DN100 SN16 upvc Base of outlet clear of norm al flow Water Level Hardening of bank required anti-scour material (preferably rip rap, rock or concrete) DN 100 STORMWATER OUTLET D4.3

4 Boundary H5 200 X 50 Gap for flow under fence 50mm Min. 75mm Max. Note 1 100m m 50mm 100m m 600m m Min. 0mm 2.4m Spacing (Max.) NOTES: 1. For 10 year ARI flow velocities: < 1.0 m/s grass cover is sufficient m/s reinforcing is required >1.5 m/s Hardening is required REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION STORMWATER SECONDARY FLOW PATH TREATMENT - PRIVATE PROPERTY D4.4 Version: AUGUST 2016

5 K&C Porous well liner Downpipe Stormwater connection Downpipe Porous well liner House Council Storm water Soakage Catchpit with overflow SITE PLAN Gutter House Downpipe Grate inlet for sealed surface Porous well liner Stormwater Pipe To connection or overland flow path LONGITUDINAL SECTION GROUNDWATER RECHARGING DEVICES PRIVATE PROPERTY D4.5

6 A 0 (Typical) dish channel in berm. Invert radius (approx.) PLAN Cast iron grate to fit socket of 225Ø RCRRJ pipe. See Note (Typical) 200 In-situ concrete apron 700 M in. 225Ø RCRRJ - class 4 pipe 500 M in. 225 Ø upvc pipe on Type HS2 bedding 1:100 grade (Min.) NOTES: 1. Top of 225Ø RCRRJ pipe and cast iron grate set 25mm below invert of dish channel. 2. All in-situ concrete shall have a minimum 28 day strength of 20MPa. In-situ concrete base SECTION A FOOTPATH BERM CATCHPIT DETAILS D4.6

7 C 600 Min. 100 Min Cariageway M in. ELEVATION SECTION C DETAIL B - PRECAST KERB COMPONENT Precast back-entry kerb component (see Detail B) Catchpit grate and frame angled to match channel profile Berm/ In-situ concrete inside face shaped to direct flow See Detail A In-situ concrete 675 x 450 precast concrete sump BACK ENTRY CATCHPIT Concrete haunching 10mm Plate across Catchpit barrel adjacent line of both lip and kerb of channel DETAIL A CATCHPIT BACK ENTRY DETAILS D4.7

8 Precast back entry kerb component to ID (i.e. back of grate central over pipe) KERB CHANNEL FALL 500 Steel plate PLAN Precast kerb component with no back-entry cavity (on upstream pit) Degreased aluminium fish (Giant Kokopu) See Drawing D4.10 Precast back-entry kerb component with no bar on upstream pit only pipe outlet 600 Min. Construction details See Drawing D WATER LEVEL 600 Ø Class 2 or 675 X 450 precast unit 700 M in. Floatables baffle See Drawing D Min. Ø RC pipe 400 Cast insitu concrete base SECTION NOTES: 1. Cast iron grate with parallel slots shown in drawing. 2. Epoxy product to be "ramset epcon C6" 2 pot epoxy or approved equivalent. 3. All in-situ concrete shall have a minimum 28 day strength of 20MPa 4. For details see Drawing D6.7 Alternative cast iron grate configuration (Perpendicular slots), for cycle routes DOUBLE SUMP CATCHPIT DESIGN D4.8

9 600 B Kerb Catchpit Sump Grate A A and Frame Channel Carriageway 500 B PLAN SCALE 1:25 Degreased Aluminium Fish (Giant Kokopu) Stiff brush clean prior to fixing fish icon. See Drawing D4.10 Top of Kerb 1.6mm Stainless Steel Sheet Grate set flush with normal grade 600Ø Class 2 or 675 x 450 precast unit 50 Holes to match rod alignment Floatables baffle fixed to chamber wall with 6mm galvanised rods, nut and spring washer, epoxied into sump wall Minimum outlet 225mm Ø FLOATABLES BAFFLE DETAIL Not to Scale SECTION A-A SCALE 1:25 Cariageway 600 M in. Floatables baffle top to be level with soffit of outlet Alternative cast iron grate configuration (perpendicular slots) for cycle routes 1800 NOTES: 1. Cast iron grate with parallel slots shown in drawing m in 2. Epoxy product to be "Ramset Epcon C6" 2 pot epoxy or approved equivalent. 3. All in-situ concrete shall have a minimum 28 day strength of 20MPa SECTION B-B SCALE 1:25 VERTICAL ENTRY CATCHPIT D4.9

10 70-80mm 220 mm GIANT KOKOPU 250mm 50mm 50mm BUBBLE UP SOAK AWAY 75mm 75mm BLUE NZ NATIVE KOKOPU NOTES: 1. Giant Kokopu Plate to be cast in aluminium - from catchpit suppliers Plates to be orientated for reading from road side. 5. FISH SYMBOLS FOR CATCHPITS D4.10

11 NOTES: 1. For single sloping carriageway, private discharge on opposite side of road shall be kerb discharge. 2. Private sites shall have on-site retention. 3. Private sites on same side of road as swale shall discharge via pipe to invert of swale. 4. Preferred water main location is at edge of footpath. Plant following Section Min. 900 Min. 600 Min If planted If mown Edge of seal Carriageway Optional 0.25mm polypropylene liner for detention only applications 50 min. 50 min. 50 min. Topsoil Edge restraint with haunching Refer Drawing D3.3.3 Slope dependent gravel underdrain with min. 100mm PVC with 8 x 10mmØ holes Filter cloth Subsoil drain per m where required in accordance with Section SECTION A 0.25mm polypropylene liner Min. 900 Min. 600 Min. 900 Edge of seal Berm M in. 0.5% Grade Carraigeway Edge restraint Refer Drawing D Optional gravel underdrain with min. 100mm PVC with 8 x 10mm Ø holes per meter A Connection to pipe network DN1050mm Manhole with scruffy dome PLAN SWALE PLAN AND SECTION D4.11

12 Wheel stop (timber or concrete) Topsoil Planted face Carriageway Optional 0.25mm polypropylene liner for detention only applications Driveway 225mmØ SN16 PVC culvert Min. 100mm clearance Slope dependent gravel underdrain with min. 100mm PVC with 8x 10mmØ holes per m where required in accordance with section Filter cloth Subsoil drain 0.25mm polypropylene liner Edge restraint Min. 900 Min. 600 Min. 900 Planted face 1 2 Refer to D3.3.5 for concrete specication. Carriageway Min ELEVATION A Wheel stop (timber or concrete) Driveway culvert ELEVATION A PLAN SWALE DRIVEWAY CROSSING DETAIL D4.12

13 Carriageway Parking Bays B Standard catchpit at invert of Channel Vertical kerb and channel surround Refer to Drawing D3.3.3 A 4.14 Vegetation Rip rap armour Perforated underdrain Raised kerb with sloped channel Refer Detail B Drawing 4.14 Capped flushing point In-situ soil with optional tree Temporary timber barrier for protection during construction Vertical kerb champhered to lip of channel with 45 champher at each end Champhered kerb and channel to raised kerb and sloped channel profile Parking Bays Vertical kerb & channel PLAN Standard catchpit at invert of channel Capped flushing point minimum 100mmØ Perforated underdrain UNDERDRAIN LONG SECTION B Not to Scale RAIN GARDEN PLAN AND UNDERDRAIN LONG SECTION D4.13 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016

14 Non floating mulch on media surface Standard kerb & channel Carriageway Rip rap armour Sloped kerb Refer detail mm Subsoil drain and 0.25mm polypropylene liner Optional 0.25mm polypropylene liner for detention only applications 50 Min. 50 Min. Perforated 100mm PVC underdrain Min. 500mm deep media. For specification refer to HCC guideline Min. mm washed drain rock 16mm to 40mm drainage layer Cleaned well graded sand transition layer CROSS SECTION - SLOPED SIDES A Not to Scale Non floating mulch on media surface Standard kerb & channel Sloped kerb Refer detail Rip rap armour Carraigeway mm Precast concrete side Subsoil drain and 0.25mm polypropylene liner Min. 500mm deep media. For specification refer to HCC guideline Min. mm washed drain rock 16mm to 40mm drainage layer Optional 0.25mm polypropelene liner for detention only applications Perforated 100mm PVC underdrain with 8 x 10mm Ø holes per m Concrete sides (Precast) Min. 100mm cleaned well graded sand transition layer CROSS SECTION - VERTICAL SIDES A Not to Scale DETAIL B - KERB WITH SLOPED CHANNEL Not to Scale RAIN GARDEN CROSS SECTIONS AND KERB DETAIL D4.14

15 Service berm Front berm Traffic lanes Catchpits with approved catchpit filter Manhole Underground storage with filter cloth. Sized for soakage or detention using ITS Property boundary Kerb and channel High flow bypass Road centre line Kerb and channel A - Optional min. 100mØ outlet with orifice sized for detention. Not required for soakage only applications Manhole Property boundary PLAN Underground storage cell with filter cloth High flow bypass CROSS SECTION Not to Scale A REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION UNDERGROUND STORAGE WITH APPROVED CATCHPIT FILTER PLAN AND SECTION D4.15 Version: AUGUST 2016

16 Catchpit with approved catchpit filter M anhole High flow bypass M anhole Bypass invert set at soffit of pipe to underground storage Underground storage cell with filter cloth. Sized for soakage or detention using ITS. Optional minimum 100mmØ outlet with orifice sized for detention. Not required for soakage only applications. Note: Underground storage can provide soakage and detention requirement if ground conditions are suitable. Consult a Geotechnical Engineer to determine if ground conditions are suitable for soakage. UNDERGROUND STORAGE WITH APPROVED CATCHPIT FILTER LONG SECTION D4.16

17 Catchpit M anhole Gross polutant trap High flow bypass M anhole Bypass invert set at soffit of pipe to underground storage Underground storage cell with filter cloth. Sized for soakage or detention using ITS. Optional minimum 100mmØ outlet with orifice sized for detention. Not required for soakage only applications. Note: Underground storage can provide soakage and detention requirement if ground conditions are suitable. Consult a Geotechnical Engineer to determine if ground conditions are suitable for soakage. UNDERGROUND STORAGE WITH GROSS POLLUTANT TRAP LONG SECTION D4.17

18 Property boundaries Property boundaries measure (WEM) Privately owned soakhole or soakage trench Service Pipe Point of discharge at boundary Stormwater Main SINGLE PROPERTY Soakage SINGLE PROPERTY Point of discharge at the Stormwater Main Stormwater Main Point of discharge stub. See D4.5 Service Pipe measure (WEM) Property boundaries Point of discharge at the serviced boundaries New service pipe WEM New House WEM Retain original for new Lot/ dwelling Old service pipe de-commisioned, as services cannot run underneath buildings House SINGLE PROPERTY SUBDIVISION Privately owned soakhole or soakage trench if possible Manhole required for of blockages Point of discharge at boundaries If greater than 120m, then another manhole is required WEM Stormwater catchpit Point of discharge at boundary Stormwater Main Stormwater Main 5+ CUSTOMERS 5+ CUSTOMERS Accessway Single Lot KEY: Council Ownership Private Ownership STORMWATER CONNECTIONS LAYOUT D4.18

19 NOTES: Ladder rung 1. Diameters of precast manhole pipes are nominal only. 2. Wastewater manholes to use ceramic for channelling. Stormwater manholes may use concrete. 3. See standard detail for cast iron lid with rim to fit recess and locking bolts and pre-cast slab detail. 4. Ground level tolerances: Pavemant +0mm, -5mm Berm +5mm, -5mm +10mm, -0mm (Min) 225 Radius minimum 2.5 x Pipe Ømm TYPICAL PLAN CURVE THROUGH MANHOLE Manhole top slab Cover to be HCC standard pattern (detail required) Maximum neck extension mm 1050Ø Chimney Manhole top slab 450 Cover slope to conform with ground slope. Manhole Chamber Slab Manhole top slab Manhole top slab Length m ax (Max) 600 (Max) BM100 jointing Concrete slab 450wide x 100deep with 4/12 bars min. length mm into undisturbed ground. First lift to be 2.4m pre-cast section Internal PVC drop Smooth steel trowel finish, do not sponge mm channel in benching (invert minimum 100mm above sewer) 90 PVC junction Precast flanged base Precast flanged base Precast flanged base DETAILS DN1050 & DN1200 MANHOLES DROP MANHOLES DETAILS DN1350 AND OVER MANHOLES DN DN1350 MANHOLES D4.21 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016

20 NOTES: 1. Maximum depth for frame and cover adjustment rings onto top slab is mm. 2. Diameters of precast manhole pipes are nominal only. 3. See standard detail for cast iron lid with rim to fit recess and locking bolts and pre-cast slab detail. 4. Ground level tolerances: Pavemant +0mm, -5mm Berm +5mm, -5mm +10mm, -0mm 5. Approved steps as per Section 8 Acceptable Materials. 1050Ø Chimney Manhole top slab for 1050Ø Manhole cast iron cover slope to conform with general ground slope. Manhole top slab Manhole Chamber Slab Manhole top slab 1800 Pipe length M ax. 230 (Min.) 400 (Min.) Step Recess Refer NOTE (Max.) 1800 Pipe length M ax Pipe length M ax (Max.) 175 (Min.) REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION TYPICAL DIMENSIONS FOR MANHOLES GREATER THAN DN1350 D4.22 Version: AUGUST 2016

21 2/12Ø Circular 320 lap reinforcing bars Ø (Min.) TOP SLAB FOR DN750 SHALLOW CHAMBER Standard HCC pattern cast iron cover with rim to fit recess Ground level tolerances (refer to Note 1) Top slab for DN750 shallow chamber 1000 (M ax.) DN No steps 250 (Min.) DN750 INTERNAL SHALLOW CHAMBER To be used only on pipes of DN100 to DN and where depth of invert is less than 1000mm NOTES: 1. Ground level tolerances: Pavemant +0mm, -5mm Berm +5mm, -5mm +10mm, -0mm SHALLOW MANHOLE/CHAMBER D4.23 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016

22 CL Length varies Road Bdy mm Min. 1.0m Max. 50 x 50 wooden marker and marker tape to extend from connection to mm above ground level. Top 100mm of post painted red (Wastewater) or green (Stormwater) Ground level Trench *ACCESS POINT 2500 max 100mm Ø lateral Min. fall 1 in 60 (1.667%) * Rodding point shown. Refer New Zealand Building Code for the allowable types of access points. Main 'Y' junction upvc Pipes Seal end with painted screw on end cap Red = Wastewater Green = Stormwater STANDARD CONNECTION WITH A DEPTH TO INVERT LESS THAN 2500mm - SECTION CL Length varies Boundary mm Min. 1.0m Max. 50 x 50 wooden marker and marker tape to extend from connection to mm above ground level. Top 100mm of post painted red (Wastewater) or green (Stormwater) Ground level Trench *ACCESS POINT Greater than mm Ø lateral Min. fall 1 in 60 (1.667%) * Rodding point shown. Refer New Zealand Building Code for the allowable types of access points. upvc Pipes Seal end with painted screw on end cap Red = Wastewater Green = Stormwater Main Plain bend London junction RAMP RISER CONNECTION WITH A DEPTH TO INVERT GREATER THAN 2500mm - SECTION (1) Public pipe to end of junction Main fitting when main is located within the Lot the connection serves. (2) Public pipe to road boundary when main is located outside the Lot the connection serves. upvc Pipes Flow London junction Boundary Seal end with painted screw on end cap Red = Wastewater Green = Stormwater POINT OF DISCHARGE: PUBLIC AND PRIVATE INFRASTRUCTURE LATERAL CONNECTION D4.24 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016

23 D/2 Drainage Pipe Bedding Weak Concrete Anti-scour blocks to be spaced at 5.0m intervals and poured against undisturbed soil, using 10mpa concrete LONG SECTION Trench side Dotted line indicates block dimensions for pipe gradients steeper than 1 in 3 Required for pipe gradients 1:5 or greater CROSS SECTION ANTI-SCOUR BLOCKS FOR STEEP DRAINAGE PIPES D4.25 REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION Version: AUGUST 2016

24 Outside wall of the manhole structure Manhole 2000 M in. clearance Public Main All superstructures shall be supported by piles founded as shown Ground Level Retaining Post 1000 M in. below influence line Ground Level ZONE OF INFLUENCE 0 Min. pile clearance 0 Min. pile clearance 1000 M in. below influence line Founding Level Public Main 0 Min. Pile clearance Piles 0 Min. Pile clearance 0 Min. Pile clearance Piles 45 Influence Line Subsequent row Founding Level 1000 M in. below pipe invert Pipe Invert First row of piles 1000 M in. below pipe invert of piles Founding Level See Note 2. ELEVATION NOTES: 1. Building or other works over public sewer or stormwater pipelines is not a practice supported by Council so shall be avoided. Where this is not possible, the building and development shall be so designed that they act independently of the public sewer or stormwater network. 2. Where required by Council, the affected public pipelines or structures shall either be relocated or renewed in place with approved pipe materials at a cost to the development. See section ABC & XYZ for more information M in. clearance Building envelope Building envelope 3. Building is not permitted over manholes or connections under any circumstances. 4. Closed Circuit Television (CCTV) inspections shall be required of Council's assets before and after as a result of any work close to or over Council's assets. 5. No structural loads shall be placed on, or be transferred to the public pipelines, or other public wastewater/stormwater assets. All structural loads shall be absorbed (by means of piles where appropriate) outside of the 45 influence envelope and below the invert level of the sewer pipe for the first row of piles. 6.All piles located within the 45 influence envelope shall be drilled. Outside wall of the manhole structure PLAN: BUILDING ADJACENT TO A PUBLIC MAIN Manhole PLAN: BUILDING OVER A PUBLIC MAIN (Only permitted if an alternative alignment is not possible) REGIONAL INFRASTRUCTURE TECHNICAL SPECIFICATION BUILDING OVER AND ADJACENT TO PUBLIC WASTEWATER OR STORMWATER PIPELINES D4.26 Version: AUGUST 2016