stormwater management · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

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LET’S GET IT DONE STORMWATER MANAGEMENT ®

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Page 1: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

LET’S GET IT DONE

STORMWATER MANAGEMENT

®

Page 2: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

2

Looking for a smarter way to manage stormwater runoff on your project? The R-Tank® System provides the most efficient and versatile method of underground stormwater storage available today. It’s an ideal way to convert stormwater ponds to useable space, and R-Tank is a more efficient, space saving alternative for underground stormwater detention, infiltration, and recycling systems.

STORMWATER MANAGEMENT

R-Tank® is a modular system and can be assembled to a variety of heights from 2” to just under 7’. This rigid system can be placed be-neath a variety of surfaces including: Parking Lots, Streets and Access Roads, Driveways, Landscaping, Athletic Fields/Playgrounds, Swales and Channels. R-Tank® can be used for a variety of applications including: Retention and Infiltration, Detention, Recycling or Harvesting, Pond Retrofits, Dry Wells, and Bioretention.

With an unlimited array of possible design configurations, the R-Tank®-

can adapt to your project to make the most economical systems pos-sible. Strength. Versatility. Cost-Effectiveness. And we’re just getting started!

®

Page 3: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

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l Light Duty module (30 psi) l Ideal for applicaions in green space l Four internal plates l 12” - 36” cover

l Heavy Duty module (33.4 psi) l Standard module for HS-20 traffic application l Five internal plates l 20” Minimum cover, 84” Maximum cover

l Super Duty module (42.9 psi) l Higher safety factors for shallow traffic appli- cations and deeper cover l Five internal plates l 18” Minimum cover, 120” Maximum cover

l Extreme Duty module (320 psi)l Traffic loads with 6” cover or 16.5’ maximum coverl Available from 2” - 10’l 90% void

BENEFITSHigh Capacity l 95% void internal area

Strength l Easily supports traffic loading from parking lots and roads l Backfill with sand - no stone required

Design & Construction Versatility l Combine modules into any shape to efficiently use space l Vary height from 2 inches to 7 feet

Increased Infiltration and Exfiltration l Outer shell is 90% open l Increases groundwater recharge, reducing post- construction discharge volumes

Easy to Transport l Can be supplied unassembled for reduced delivery costs

Lightweight and Quick to Install l Installed by hand; no cranes required lReduces site access delays

Permanent and Maintainable Storage Volume l All storage volume is isolated inside filter fabric envelope l No reliance upon unsustainable, temporary, assumed void space in crushed gravel backfill

Recycled Content l Manufactured with recycled polypropylene

R-TANK®800.448.3636 acfenvironmental.com

®

®

®

®

Page 4: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

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Many factors will influence the design of the R-Tank® system. While this list is not intended to be all-inclusive, sev-eral design considerations are worth highlighting:

1. PRE-TREATMENT2. BACKFILL MATERIALS3. RUNOFF REDUCTION4. WATER TABLE5. CONSTRUCTION LOADS6. LATERAL LOADS7. R-TANK® MODULES8. LOAD MODELING

1. PRE-TREATMENTRemoving pollutants from runoff before they enter an underground detention system is the only smart way to design & build a system. The best way to do that is with the Trash Guard Plus® (see page 6), but many other ways exist. Be sure the system you select will remove: l Heavy Sediments l Gross Pollutants (trash) l Biodegradable Debris

2. BACKFILL MATERIALSBackfill materials should be stone (smaller than 1.5” in diameter) or soil (GW, GP SW or SP as classified by the Unified Soil Classification System). Material must be free from lumps, debris and any sharp objects that could cut the geotextile. See the R-Tank® narrative specification section 2.03 for additional information.

3. RUNOFF REDUCTIONRunoff Reduction – Most designs incorporate an out-let to drain the system at a controlled rate and/or an overflow to prevent flooding in extreme events. But be sure to take advantage of any infiltration you can achieve on the site. Consider raising the invert of your outlet or creating a sump to capture and infiltrate the water quality volume whenever possible.

4. WATER TABLEWhile installing the R-Tank® below the water table is manageable, designers must be able to create a sta-ble base and account for the system’s ability to drain this water out or limit its ability to enter the system. If a liner is used to prevent ground water from entering the system, measures must be taken to prevent the system from floating.

5. CONSTRUCTION LOADSConstruction loads are often the heaviest loads the system will see throughout its life. Care must be taken during backfilling and compaction using the proper equipment (see specification section 3.05), and post-installation construction traffic should be routed around the system (Installation Guide step 12).

6. LATERAL LOADSAs systems get deeper, the loads acting on the side of the tank increase. These lateral loads should be con-sidered when the bottom of the system is 10’ or more below finished grade.

7. R-TANK® MODULESBe sure to select the right module for your applica-tion. See the information on page 3 for more details on which module is the best fit. Also refer to the speci-fications for each module on the back of this brochure or call us for assistance.

8. LOAD MODELINGA safety factor of 1.75 or higher is required when de-signing with R-Tank®. Be sure to run your own loading model with all requirements specific to your site. Sev-eral example models can be found in our Tech Note on loading capabilities, and minimum cover require-ments for various loads can be found in the spec on the back of this brochure.

DESIGN CONSIDERATIONS 800.448.3636 acfenvironmental.com

R-TANKHD & HS-20 LOADS - SECTION VIEW

PAVEDSURFACE

R-TANKᴴᴰ UNITS WRAPPED IN 8 OZ.NONWOVEN GEOTEXTILE (OR EQUAL)

LOAD RATING: 33.4 PSI (MODULE ONLY)BASE: 3" MIN. FREE DRAINING BACKFILL (SPECSECTION 2.03B) COMPACTED TO 95% STANDARDPROCTOR DENSITY IS REQUIRED TO PROVIDE A LEVELBASE SURFACE. MUST BE SMOOTH, FREE OF LUMPSOR DEBRIS, AND EXTEND 2' BEYOND R-TANKᴴᴰFOOTPRINT. A BEARING CAPACITY OF 2,000 PSF MUSTBE ACHIEVED PRIOR TO INSTALLING R-TANKᴴᴰ. NATIVESOILS MAY BE ACCEPTABLE IF DETERMINED TO BESTABLE BY OWNER'S ENGINEER.

TOTAL COVER: 20” MINIMUM AND 84” MAXIMUM. FIRST 12” MUST BEFREE DRAINING BACKFILL (SPEC SECTION 2.03B): STONE <1.5” OR SOIL

(USCS CLASS GW, GP, SW OR SP). ADDITIONAL FILL MAY BESTRUCTURAL FILL (SPEC SECTION 2.03C): STONE OR SOIL (USCS

CLASS SM, SP, SW, GM, GP OR GW) WITH MAX CLAY CONTENT<10%,MAX 25% PASSING NO. 200 SIEVE, AND MAX PLASTICITY INDEX OF 4. A

MIN. 12” COVER MUST BE MAINTAINED BETWEEN BACKFILLEQUIPMENT AND THE TOP OF THE R-TANK™ SYSTEM AT ALL TIMES.

TOTAL HEIGHT OF TOP BACKFILL SHOULD NOT EXCEED 7'. CONTACTACF ENVIRONMENTAL IF MORE THAN 7' OR LESS THAN 20" OF TOP

BACKFILL IS REQUIRED (FROM TOP OF TANK TO TOP OF PAVEMENT).

UTILITY MARKERS ATCORNERS (TYP.)

SIDE BACKFILL: 24" MIN. OF FREE DRAININGBACKFILL (SPEC SECTION 2.03B): STONE<1.5” OR SOIL (USCS CLASS GW, GP, SW ORSP). MUST BE FREE FROM LUMPS, DEBRISAND OTHER SHARP OBJECTS. SPREADEVENLY TO PREVENT R-TANKᴴᴰ MOVEMENT.COMPACT SIDE BACKFILL WITH POWEREDMECHANICAL COMPACTOR IN 12" LIFTS.

12" (0.30 m)

36" (0.91 m) MIN.

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com 9/16

OPTIONALOVERFLOWPIPE

OPTIONALOUTLETPIPE

3" (0.08 m) MIN.

INLET PIPE

EXCAVATION LINE(AND IMPERMEABLE LINER IF REQUIRED)

24" (0.61 m)

GEOGRID (TENSAR BX-1200 OR EQUAL) PLACED 12” ABOVE THER-TANKᴴᴰ SYSTEM. OVERLAP ADJACENT PANELS BY 18” MIN.GEOGRID SHOULD EXTEND 3' BEYOND THE EXCAVATION FOOTPRINT.

NOTES:· FOR COMPLETE MODULE DATA, SEE APPROPRIATE R-TANKᴴᴰ MODULE SHEET .· INSTALLATIONS PER THIS DETAIL MEET GUIDELINES OF HL-93 LOADING PER THE AASHTO LRFD

BRIDGE DESIGN SPECIFICATIONS, CUSTOMARY U.S. UNITS, 7TH EDITION, 2014 WITH 2015 AND 2016INTERIM REVISIONS.

· PRE-TREATMENT STRUCTURES NOT SHOWN.· FOR INFILTRATION APPLICATIONS, BASE SHALL BE 4" MIN. UNCOMPACTED FREE DRAINING

BACKFILL (SPEC SECTION 2.03B) TO PROVIDE A LEVEL BASE SURFACE. MUST BE SMOOTH, FREE OFLUMPS OR DEBRIS, AND EXTEND 2' BEYOND R-TANKᴴᴰ FOOTPRINT. A BEARING CAPACITY OF 2,000PSF MUST BE ACHIEVED PRIOR TO INSTALLING R-TANKᴴᴰ.

20" (0.51 m) MIN.84" (2.13 m) MAX.

COVER FROM FINISHGRADE TO TOP OF TANK:

R-T

ank

HD

Sec

tion-

HS-

20.d

wg

9

/23/

16

Page 5: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

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Pipe and stone systems are used in traditional systems to move and store runoff. R-Tank does the same job, but with several additional benefits. l Stores and moves runoff l Open system encourages infiltration l Stores 138% more water than stone l Easily handles traffic loads beneath sidewalks and streets

l Ships flat to reduce site disturbance

As much of the nation’s Gray Infrastructure continues to decay, new concepts for a better way to rebuild it are emerging through Green Infrastructure (GI) and Low Impact Development (LID). This type of recon-struction moves beyond traditional systems that do ONE THING very well to systems that accomplish MULTIPLE objectives simultaneously. ACF has several technologies that dovetail with the goals of LID and GI that can play a significant role in the redevelopment process.

FOCALPOINTTraditional landscaping adds aesthetic value to projects, but has more potential. Many developers turn to bioretention, but are forced to surrender massive land areas and dedicate significant future funds to maintenance. FocalPoint reduces the space requirements and maintenance costs of bioretention by up to 90% while providing all the water purification benefits. l Adds aesthetic value to properties l Cleans runoff to improve water quality l Reduces space requirements and maintenance costs of traditional bioretention systems l Encourages infiltration to reduce volume of water discharged l Pair with R-Tank® to maximize water storage and transport

PERVIOUS PAVEMENTSTraditional pavements move vehicles efficiently, but are easily damaged by stormwater. ACF specializes in pervious pavements that handle traffic easily while providing surface infiltration rates 10 times higher than traditional pervious pavements. High surface infiltration rates reduce the expense of long-term maintenance and the headaches that go with it. l Handles all vehicular loads l Drains ten times faster than competing pervious pavements l Reduces long-term maintenance costs l Encourages infiltration l Pair with R-Tank® to maximize water storage and transport

LOW IMPACT DESIGN AND GREEN INFRASTRUCTURE

CROSS-SECTIONSIDE VIEW

R-TANKXD (1.97")

ACF M200 GEOTEXTILE

PERVIOUS PAVEMENT (5.65")

6-12" OF BEDDING STONE(THICKNESS TO BE

DETERMINED BY ENGINEER)

R-TANK®

ACF Envir

onmental

LID SWM SOLU

TIONS

SPACEEFFICIENT

SUBSURFACESTORAGE

CROSS-SECTIONSIDE VIEW

R-TANKXD (1.97")

ACF M200 GEOTEXTILE

PERVIOUS PAVEMENT (5.65")

6-12" OF BEDDING STONE(THICKNESS TO BE

DETERMINED BY ENGINEER) R-TANK

RUNOFFREDUCTION

TECHNIQUES

ACF Envir

onmental

LID SWM SOLU

TIONS

VEGETATED/BIOLOGICALTREATMENT

SYSTEM

ACF Envir

onmental

LID SWM SOLU

TIONS

Page 6: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

6

TRASH GUARD PLUS ®Trash Guard Plus® is a patented stormwater pretreatment device that captures debris, sediment and floatables. Easy to install and maintain, it is a fraction of the cost of other pretreatment devices.

Benefits of Trash Guard Plus®

- Simple retrofit to existing catch basins - Installs without heavy equipment- Quick and easy assembly- Adjusts to irregular catch basin bottoms and/or walls- Eliminates eyesore stormwater trash at public parks, beaches, and waterways- Removes harmful nutrients and regulated metals

Maintaining the pre-treatment systems on a site is the most important factor in keeping an R-Tank® System healthy. However, there are a few ways to make flushing out the R-Tank® a snap.

1. PRE-TREATMENTTrash Guard Plus® units (see below) will prevent unwant-ed trash and sediments from entering the R-Tank®. You may also want to consider having the R-Tank® units pen-etrate the connecting structure, which allows the use of the R-Tank® as its own trash screen. This works best with a structure that includes a sump (see drawing to right).

2. SEDIMENT FOREBAYForebays can be easily formed out of the R-Tank® itself, helping to facilitate maintenance by reducing the time and expense of maintenance efforts, as well as improv-ing performance (see drawing to right).

3. MAINTENANCE PORTThese ports allow access for backflushing the system, and should be included within 10’ of all inlet and outlet connections, and roughly 50’ on center. Check out the detail on page 7 for more information.

MAINTENANCE PREVENTION

BASE MATERIALS3” MIN

EXCAVATION LINE

R-TANK FOREBAY AREA ONE UNIT DEEPER THAN REST OF SYSTEM –

MAINTAIN TOP ELEVATION THROUGHOUT SYSTEM

24” MIN

INLET PIPE

OPTIONAL OVERFLOW PIPE

OPTIONAL OUTLET PIPE

GEOGRID BX-1200 (OR EAQUAL)

PAVED SURFACE

36” MIN

BACKFILL COMPACTED TO 95% PROCTOR DENSITY

NOTE: PRE-TREATMENT STRUCTURES AND

MAINTENANCE PORTS NOT SHOWN

R-TANK – FOREBAY DETAIL (SECTION VIEW)

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL 800-448-3636 www.acfenvironmental.com

ACF N080 (OR EQUAL)

FOREBAY DETAIL

MAINTENANCE

Inle

t Con

nect

ion

at S

truct

ure.

dwg

1

1/11

/16

24" MIN. 3" MIN. BASE MATERIAL

NOTE: MAINTENANCE PORTSARE NOT SHOWN

SECTION VIEW

PLAN VIEW

8 OZ NONWOVENGEOTEXTILE

R-TANK UNITS

BACKFILL COMPACTED TO 95%STANDARD PROCTOR DENSITY PAVED SURFACEGEOGRID

BASE MATERIALSAS REQUIRED

OPTIONAL INLET PIPE

ACTUAL NUMBER OF UNITSPENETRATING STRUCTURE TO BEDETERMINED BY ENGINEER

OPTIONAL OUTLET PIPE

INLET STRUCTURE TYPE AND SIZETO BE DETERMINED BY ENGINEER

12"

SUMP DEPTH TO BEDETERMINED BY ENGINEER

R-TANK UNITS

OPTIONAL INLET PIPE

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com 11/16

R-TANK INLET CONNECTION

INLET CONNECTION

Page 7: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

7

CAD DRAWINGSModule Drawing - Double Maintenance Port

Inlet / Outlet Pipe Connections Pipe Boot

HS 20 Load Cistern

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com

SECTION VIEW

3" Stone base6" of water toremain in ACF

R-Tankᴴᴰ

Geogrid

Inlet pipecarrying

pre-filteredstormwater

Overflow pipePavement base

Pavement

ACF R-Tankᴴᴰ10 oz Nonwovengeotextile

Stone backfill

R-TANKᴴᴰ CISTERNUNDER PAVEMENT

24" Typical 12"

10 oz Nonwoven geotextile30 mil PVC liner10 oz Nonwoven geotextile

R-TANKᴴᴰ TYPICAL TANK INLET/OUTLET DETAIL

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com

NON-CORROSIVE HOSECLAMP OR TAPE USED TOFASTEN FABRIC TO PIPES

TO PREVENT BACKFILLFROM ENTERING

STRUCTURE

GEOTEXTILE FABRICOVER ACF R-TANKᴴᴰ

NON-CORROSIVE HOSECLAMP OR TAPE USED TOFASTEN FABRIC TO PIPESTO PREVENT BACKFILLFROM ENTERINGSTRUCTURE

GEOTEXTILE FABRICOVER ACF R-TANKᴴᴰ

INLET/OUTLETPIPE

END VIEW OF PIPE/FABRIC CONNECTION.CUT AN "X" IN THE FABRIC SLIGHTLYLARGER THAN PIPE, PULL THE FABRICAROUND THE PIPE TO CREATE THE "BOOT"AND THEN SECURE WITH A HOSE-CLAMP.

"X" CUT IN THEFABRIC TO

ALLOWPIPE/TANK

INTERFACEGEOTEXTILEFABRIC

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com

FABRIC PIPE BOOT FOR R-TANKᴴᴰ

FRONT VIEW

12 OZ/SY NONWOVEN GEOTEXTILE

5.0'

PIPEO.D.

PIPE

5.0'

SIDE VIEW

PIP

EO

.D.

2'-0"

FABRIC COLLAR TO FIT OUTSIDEDIAMETER OF INLET/OUTLET PIPE

NOTE: CUT FABRIC AND WRAP AROUNDPIPE SO THAT PIPE BUTS DIRECTLY

AGAINST ACF R-TANKᴴᴰ PIPE EFFLUENTSHALL NOT PASS THROUGH FABRIC

GEOTEXTILE FABRICOVER ACF R-TANKᴴᴰ

SECTION

STAINLESS STEELBANDS

STAINLESSSTEEL BANDS

TYPICAL DESIGN800.448.3636 acfenvironmental.com

NOTES· THIS PORT IS USED TO PUMP WATER INTO THE SYSTEM

AND RE-SUSPEND ACCUMULATED SEDIMENT SO THAT ITMAY BE PUMPED OUT.

· MINIMUM REQUIRED MAINTENANCE INCLUDES AQUARTERLY INSPECTION DURING THE FIRST YEAR OFOPERATION AND A YEARLY INSPECTION THEREAFTER.FLUSH AS NEEDED.

· ONLY R-TANKᴴᴰ AND R-TANKSD MAY BE USED IN TRAFFICAPPLICATIONS.

16.25" FRAME ANDCOVER

PAVED SURFACE

BACKFILL COMPACTED TO95% STANDARD PROCTOR

DENSITY

B

GEOGRID

A

NON-CORROSIVE HOSE CLAMP

GEOTEXTILE

NOTCH BOTTOMOF PIPESEE PATTERN

NON-CORROSIVESOLID PLATE

PLASTIC, SLATEOR EQUIVALENT

1" +/- VENTING PERFORATIONS

PIPE NOTCHINGPATTERN

8" NOTCHES CUT IN SHADEDAREAS (8 OPENINGS TOTAL)

1.5"

3.5"

MAINTENANCE PORTFOR R-TANK, R-TANKᴴᴰ, AND R-TANKSD

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com 6/16

R-TANK(REGULAR SHOWN)

DEPTH SUMMARYTYPE A B

R-TANK 12" MIN - 36" MAX AS SHOWNON PLANS

R-TANKᴴᴰ 20" MIN - 6.99' MAX 12"

R-TANKSD 18" MIN - 9.99' MAX 12"

12" DIA. PVCMAINTENANCE

PORT

REINFORCEDCONCRETE COLLARWHERE REQUIRED

15.7

5"

15.75"

33.8

6"

28.15"

28.15"33

.86"

ISOMETRIC VIEW

SECTION VIEW

PLAN VIEW

FRONT VIEW

LENGTH = 28.15 IN. (715 MM)WIDTH = 15.75 IN. (400 MM)HEIGHT = 33.86 IN. (860 MM)TANK VOLUME = 8.69 CFSTORAGE VOLUME = 8.25 CFVOID INTERNAL VOLUME: 95%VOID SURFACE AREA: 90%

R-TANKᴴᴰ - DOUBLE MODULE

GEOMETRY:

MODULE DATA

33.4 PSI, (MODULE ONLY)HS25, (WITH ACF COVER SYSTEM)

100% RECYCLEDPOLYPROPYLENE

5/10

LOAD RATING:

MATERIAL:

SMALL PLATES PERSEGMENT/TOTAL:

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com 5/16

R-TANKHD & HS-20 LOADS - SECTION VIEW

PAVEDSURFACE

R-TANKᴴᴰ UNITS WRAPPED IN 8 OZ.NONWOVEN GEOTEXTILE (OR EQUAL)

LOAD RATING: 33.4 PSI (MODULE ONLY)BASE: 3" MIN. FREE DRAINING BACKFILL (SPECSECTION 2.03B) COMPACTED TO 95% STANDARDPROCTOR DENSITY IS REQUIRED TO PROVIDE A LEVELBASE SURFACE. MUST BE SMOOTH, FREE OF LUMPSOR DEBRIS, AND EXTEND 2' BEYOND R-TANKᴴᴰFOOTPRINT. A BEARING CAPACITY OF 2,000 PSF MUSTBE ACHIEVED PRIOR TO INSTALLING R-TANKᴴᴰ. NATIVESOILS MAY BE ACCEPTABLE IF DETERMINED TO BESTABLE BY OWNER'S ENGINEER.

TOTAL COVER: 20” MINIMUM AND 84” MAXIMUM. FIRST 12” MUST BEFREE DRAINING BACKFILL (SPEC SECTION 2.03B): STONE <1.5” OR SOIL

(USCS CLASS GW, GP, SW OR SP). ADDITIONAL FILL MAY BESTRUCTURAL FILL (SPEC SECTION 2.03C): STONE OR SOIL (USCS

CLASS SM, SP, SW, GM, GP OR GW) WITH MAX CLAY CONTENT<10%,MAX 25% PASSING NO. 200 SIEVE, AND MAX PLASTICITY INDEX OF 4. A

MIN. 12” COVER MUST BE MAINTAINED BETWEEN BACKFILLEQUIPMENT AND THE TOP OF THE R-TANK™ SYSTEM AT ALL TIMES.

TOTAL HEIGHT OF TOP BACKFILL SHOULD NOT EXCEED 7'. CONTACTACF ENVIRONMENTAL IF MORE THAN 7' OR LESS THAN 20" OF TOP

BACKFILL IS REQUIRED (FROM TOP OF TANK TO TOP OF PAVEMENT).

UTILITY MARKERS ATCORNERS (TYP.)

SIDE BACKFILL: 24" MIN. OF FREE DRAININGBACKFILL (SPEC SECTION 2.03B): STONE<1.5” OR SOIL (USCS CLASS GW, GP, SW ORSP). MUST BE FREE FROM LUMPS, DEBRISAND OTHER SHARP OBJECTS. SPREADEVENLY TO PREVENT R-TANKᴴᴰ MOVEMENT.COMPACT SIDE BACKFILL WITH POWEREDMECHANICAL COMPACTOR IN 12" LIFTS.

12" (0.30 m)

36" (0.91 m) MIN.

FOR ADDITIONAL INFORMATION PLEASE CONTACT: ACF ENVIRONMENTAL, 1-800-448-3636, www.acfenvironmental.com 9/16

OPTIONALOVERFLOWPIPE

OPTIONALOUTLETPIPE

3" (0.08 m) MIN.

INLET PIPE

EXCAVATION LINE(AND IMPERMEABLE LINER IF REQUIRED)

24" (0.61 m)

GEOGRID (TENSAR BX-1200 OR EQUAL) PLACED 12” ABOVE THER-TANKᴴᴰ SYSTEM. OVERLAP ADJACENT PANELS BY 18” MIN.GEOGRID SHOULD EXTEND 3' BEYOND THE EXCAVATION FOOTPRINT.

NOTES:· FOR COMPLETE MODULE DATA, SEE APPROPRIATE R-TANKᴴᴰ MODULE SHEET .· INSTALLATIONS PER THIS DETAIL MEET GUIDELINES OF HL-93 LOADING PER THE AASHTO LRFD

BRIDGE DESIGN SPECIFICATIONS, CUSTOMARY U.S. UNITS, 7TH EDITION, 2014 WITH 2015 AND 2016INTERIM REVISIONS.

· PRE-TREATMENT STRUCTURES NOT SHOWN.· FOR INFILTRATION APPLICATIONS, BASE SHALL BE 4" MIN. UNCOMPACTED FREE DRAINING

BACKFILL (SPEC SECTION 2.03B) TO PROVIDE A LEVEL BASE SURFACE. MUST BE SMOOTH, FREE OFLUMPS OR DEBRIS, AND EXTEND 2' BEYOND R-TANKᴴᴰ FOOTPRINT. A BEARING CAPACITY OF 2,000PSF MUST BE ACHIEVED PRIOR TO INSTALLING R-TANKᴴᴰ.

20" (0.51 m) MIN.84" (2.13 m) MAX.

COVER FROM FINISHGRADE TO TOP OF TANK:

R-T

ank

HD

Sec

tion-

HS-

20.d

wg

9

/23/

16

Page 8: STORMWATER MANAGEMENT · 2017. 2. 28. · free draining backfill (spec section 2.03b): stone

8

800.448.3636 acfenvironmental.comPRODUCT SPECIFICATION

For more information about Stormwater Management, contact us at 800.448.3636email at [email protected]

2 2017

8

andDimensions & Capacity

Module (Units) Width (inches) Length (inches) Height (inches/ft) Tank Vol (cf) Storage Vol (cf) Weight* (lbs)

Mini 15.75 28.15 9.45" / 0.79' 2.42 2.30 10.19 / 10.95Single (1) 15.75 28.15 17.32" / 1.44' 4.44 4.22 15.73 / 17.35

Single + Mini (1.5) 15.75 28.15 25.98" / 2.17' 6.67 6.33 23.61/ 25.98

Double (2) 15.75 28.15 33.86" / 2.82' 8.69 8.25 29.15 / 32.37

Double + Mini (2.5) 15.75 28.15 42.52" / 3.54' 10.91 10.36 37.02 / 41.01

Triple (3) 15.75 28.15 50.39" / 4.20' 12.93 12.28 42.56 / 47.40

Triple + Mini (3.5) 15.75 28.15 59.06" / 4.92' 15.15 14.39 50.43 / 56.03

Quad (4) 15.75 28.15 66.93" / 5.58' 17.17 16.31 55.97 / 62.43

Quad + Mini (4.5) 15.75 28.15 75.59" / 6.30' 19.39 18.42 63.85 / 71.06

Pent (5) 15.75 28.15 83.46" / 6.96' 21.41 20.34 69.38 / 77.45

* Weights Shown are for Standard R-Tank and R-TankHD

Dimensions & CapacityModule (Units) Width (inches) Length (inches) Height (inches/ft) Tank Vol (cf) Storage Vol (cf) Weight (lbs)

Single (1) 15.75 28.15 9.45" / 0.79' 2.42 2.30 10.95

Double (2) 15.75 28.15 4.64 4.41 19.58

Triple (3) 15.75 28.15 6.86 6.52 28.21

Quad (4) 15.75 28.15 9.08 8.63 36.84

Pent (5) 15.75 28.15 11.30 10.74 45.47

Hex (6) 15.75 28.15 13.52 12.84 54.10

Septa (7) 15.75 28.15 15.74 14.95 62.73

Octo (8) 15.75 28.15 17.96 17.06 71.36

Nono (9) 15.75 28.15 20.18 19.17 79.99

Decka (10) 15.75 28.15

18.12" / 1.51' 26.79" / 2.23' 35.46" / 2.96' 44.13" / 3.68' 52.80" / 4.40' 61.47" / 5.12' 70.14" / 5.85' 78.81" / 6.57' 87.48" / 7.29' 22.40 21.28 88.62

Dimensions & CapacityModule (Units) Width (inches) Length (inches) Height (inches/ft) Tank Vol (cf) Storage Vol (cf) Weight (lbs)

Single Panel 19.68 23.62 1.97" / 0.164' 0.53 cf 0.48 4.00 lbs

*Stack Individual Units to Make Any Height Up To 10'

Specifications R-Tank R-TankHD

R-TankSD

R-TankXD

Item Value Value Value Value

Void Area 95% 95% 95% 90%

Surface Area Void 90% 90% 90% 90%

Compressive

Strength30.0 psi 33.4 psi 42.9 psi 320 psi*

Unit Weight 3.29 lbs/cf 3.62 lbs/cf 3.96 lbs/cf 7.55 lbs/cf

Rib Thickness 0.18 inches 0.18 inches 0.18 inches

Service

Temperature-14 - 167⁰ F -14 - 167⁰ F -14 - 167⁰ F -14 - 185⁰ F

Recycled Content 100% 100% 100% 100%

Minimum Cover Green Space Only 20" 18" 6"

Minimum Cover Green Space Only 24" 18" 6"

Maximum Cover 36" 6.99' 9.99' 16.7'R-Tank

XD capacity derived from non-ASTM testing.

Description

Product Specifications

Volume available for water storage

% of exterior available for infiltration

Thickness of load-bearing members

Weight of plastic per cubic foot of tank

ASTM D 2412 / ASTM F 2418

Use of recycled polypropylene

Cover required for HS-25 loading

Maximum allowable cover depth

www.acfenvironmental.com

800-448-3636

Safe temperature range for use

Cover required for HS-20 loading

Tec

hnical

800.448.3636 acfenvironmental.comPRODUCT SPECIFICATION

For more information about Stormwater Management, contact us at 800.448.3636email at [email protected]

LD

*R-TankXD compressive strength not derived from ASTM testing.

*Weights Shown are for R-TankLD and R-TankHD