ACO Construction & Building Products

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1 ACO Construction & Building Products Geocellular Stormwater Management System ACO StormBrixx Product Brochure Introduction to the StormBrixx System Stormwater Detention Stormwater Infiltration Stormwater Retention

2 ACO. creating the future of drainage System Chain ACO is a global leader in surface water management. With products to collect, clean, hold and release water; addressing all phases of the water cycle and supporting sustainable drainage (SD, SUDS), Low Impact Development (LID) and LEED principles. As land becomes increasingly developed the natural hydrologic cycle is dramatically impacted: Less infi ltration recharging ground waters Increased runoff volume and velocity Increased hydraulic load on sewer systems Collect Clean Hold Release Trench drains Catch basins Oil/water separators Detention/ Retention devices Infiltration systems Flow control State and Federal laws (Clean Water Act, MS4s, BMPs, NPDES) exist to control stormwater quality. The common theme being to retain stormwater on site and replicate the natural hydrological cycle. ACO StormBrixx can be used to replicate several phases of the hydrological cycle. Retain water onsite, and allow infi ltration to recharge groundwater Enable discharge into receiving waters at a slower, natural rate preventing erosion and avoiding increased river fl ow velocity Discharge water has time to cool to ambient ground temperature to prevent warming of the receiving waters Pollutants, debris and sediment can be removed and/or treated In addition water can be harvested for reuse for non-potable uses decreasing the load on potable water supplies. All of these steps support Low Impact Development (LID) and LEED initiatives. 2

3 ACO StormBrixx consists of a single recycled polypropylene body that can be assembled in a variety of ways to form an open bonded structure. The unique pillar configuration of ACO StormBrixx gives a high void ratio of 95%. This minimizes the excavation required to achieve a specified water storage capacity, reduces aggregate needed for backfilling, and improves flow characteristics of runoff through the tank. ACO StormBrixx benefits from a patented cell brick and cross bonding feature which provides unparalleled stability in the construction of the tank. ACO StormBrixx has been awarded the UK BCIA Product Innovation Award Structural Integrity Independently tested to certify structural integrity - greater creep performance Patented brick-bonding and cross bonding feature provide greater shear resistance than similar products Connectors hold units together both vertically and horizontally Suitable for both HS20 and HS25 applications Access and maintenance Open cell structure allows TOTAL access to all corners and all levels for CCTV and jetting equipment Fewer access points required for access to entire system Simpler maintenance Simplified handling and logistics Stackable design simplifies delivery, site logistics and installation. Optimizing logistics - fewer trucks Reduced space required on site 2-piece cell - fewer parts and quicker assembly - seconds vs. 2 minutes per cell for similar units Reduced CO 2 footprint and significant cost savings 3

4 ACO StormBrixx Main Components ACO StormBrixx has a range of key features: Flexible tank configurations to satisfy installation and site requirements Patented brick bonding and cross bonding feature delivers a strong and robust tank installation with maximum shear resistance Silt management and control achievable through tank confi guration layout Open cell structure provides simple access for remote CCTV and maintenance equipment to inspect ALL levels and areas of the system Access chamber provides access for cleaning, large pipe diameter inlets and silt management Delivery, site logistics and installation are all dramatically simplifi ed, as a result of the system s stackable design 3-way connector improves the structural integrity of multilayered tank structures and where brick bonding is not used Inspection point for camera or jetting equipment High void ratio 95% High strength ribbed columns maximize creep performance. Stackable, lightweight, nesting design for easy handling and fast installation Access groove provides a clear path for inspection cameras or jetting equipment to all corners and layers of a tank 4

5 Recycled polypropylene top covers are added to the top layer of the system to ensure consistent vertical support for the cover fill material. Clip-in connectors are available to aid alignment and installation of single and double layer StormBrixx configurations. Improves structural integrity and shear resistance. Recycled polypropylene construction provides tough, highly corrosion resistant structure Two injection molded bodies clip together to form one single tank unit Recycled polypropylene side panels are added to the perimeter of the system to give lateral support against surrounding soils and create debris and silt traps Units can be cut in half to accommodate different tank configurations 5

6 ACO StormBrixx - Detention (Attenuation), Retention and Infiltration systems Detention tank Top cover Access chamber Outlet pipe Protection fleece Impermeable ACO StormBrixx geomembrane tank bodies Layer connector Side panels Inlet pipe Sediment channel option Low flow/ drain down facility Definition of a detention (attenuation) system Detention is the process of spreading the peak flow of a storm event over a longer period of time, releasing the water slowly, and mitigating the surge effect downstream. Definition of a retention system Retention is the subsequent process of storing the water for infiltration or reuse. 6 Sediment can be removed before water enters the StormBrixx unit or a sediment tunnel and/or drain down facility can be incorporated into the tank design.

7 Infiltration tank Top cover Access chamber Geotextile ACO StormBrixx tank bodies Layer connector Side panels Inlet pipe Sediment forebay option Sediment forebay Definition of an infiltration system Infiltration is the process by which water from the surface enters subsurface soil and rock. The process includes sedimentation and biodegradation, freeing the water from impurities. Sediment can be removed either before water enters the StormBrixx or as water enters the system via a sediment forebay. 7

8 ACO StormBrixx Access Chamber The access chamber is designed to provide complete 3D access to enable inspection of all levels and areas of the system by either tracked or push rod CCTV inspection equipment. Where required, ACO StormBrixx systems can be jetted using standard equipment. When the ACO StormBrixx access chamber has been confi gured to create a low fl ow drain down channel or a silt trap, the unit allows for the removal of silt and debris. Cover and frame 18" diameter (450mm) solid ductile iron cover and frame is available to complete the StormBrixx access chamber installation. Cover is rated to 40 ton loads. The modular stackable chamber is designed to be incorporated into any StormBrixx detention/retention or infi ltration system, and forms an integral part of the system s overall volume, removing the need for expensive upstream manholes. Perimeter of ACO StormBrixx access chamber Cut unit at guides for required pipe connection. Push up to 2.5" (65mm) of pipe into access chamber module. If using more than one access chamber module in a stack, it will be necessary to remove base from all modules except bottom base unit. Cut along the recessed cutting line provided and remove base. Layer connectors should be incorporated before the next module is added to the access chamber stack. Once the main access chamber has been constructed it will be necessary to add a 18" (450mm) ID raising piece cut to length and placed over the top of the access chamber unit. Once the bases of the upper module(s) have been removed, simply stack units on top of each other ensuring that each module is clipped to the main structure using the StormBrixx layer connectors. 8

9 Geomembranes and Geotextiles Protection fleece Geomembrane Geotextile Thick protection fleece used to protect geomembrane from mechanical damage due to ground and thermal movement. Placed on outer side of geomembrane. Fleece can be used with standard or welded geomembrane system. Selection Guide Impermeable geomembrane for detention/ retention applications. For non sensitive retention applications taped joints are usually acceptable. For sensitive applications ACO recommends installation by professional lining contractors using a geomembrane system with 100% watertight welded joints. Permeable geotextile, for use in infiltration applications. Permits passage of water into and out of ACO StormBrixx system. Non-sensitive detention/retention Site-sensitive detention/retention Infiltration Geomembrane Protection fleece Welded geomembrane Protection fleece Geotextile Pipe connector Pipe connector A taped geomembrane system should only be used where ground conditions can accept minor leakages from the tank. It should NOT be used in sensitive applications such as, but not limited to: Within 16.5ft (5m) of any building line Where there is a high groundwater table Where land is contaminated or risk of contamination from surface water is high. Correct choice of geomembrane is essential to overall performance of any detention/ retention system. In applications where there are site-sensitive issues, consult specialist geomembrane supplier and ensure it is installed by an accredited lining contractor. Site Sensitive applications include: High groundwater table Contaminated ground Within 16.5ft (5m) of any building line Where risk of contamination to groundwater from polluted surface waters exists. A non-woven polypropylene geotextile with excellent filtration and drainage properties should be used to minimize sediment build up within an ACO StormBrixx infiltration (soakaway) system. Geotextile should completely envelop the StormBrixx system. 9

10 ACO StormBrixx System Assembly Depending on the design and installation requirements, a variety of unit configurations and tank sizes can be achieved. In its simplest form, a single 48" x 24" x 24" (1200 x 600 x 610mm) unit can be constructed by placing one unit on top of another. These units can then be arranged laterally & vertically to required size using layer connectors. ACO StormBrixx also benefits from a patented cell brick and cross bonding feature which provides unparalleled stability in the construction of the tank. This feature allows creation of a single layer of interlocked units. Multiple layers can then be stacked using layer connectors to join Completed unit 10

11 Creating a double unit: Creating a triple unit: Creating a quadruple unit: 48" x 48" x 24" (1200 x 1200 x 610mm) 71" x 48" x 24" (1800 x 1200 x 610mm) 95" x 48" x 24" (2400 x 1200 x 610mm) Lay two tank bodies side by side ensuring there are no gaps between them and that there are four male or female columns in the centre of the configuration. Invert two tank bodies and fix them to the lower tank bodies in the opposite direction. Lay two tank bodies side by side and lay another tank body 90 at the end of the first two. Ensure there is one block of four female and one block of four male columns in the middle of the configuration. Lay two tank bodies side by side and another two tank bodies at a 90 at either end of the first two. Depending on which way the lower units are laid, there should either be one block of four female, one block of four male and one block of four female columns in the middle of the configuration or vice versa. To create the top level of the unit, invert four tank bodies and fix them to the lower tank bodies

12 ACO StormBrixx System Configurations There are multiple ways an ACO StormBrixx system can be configured. These designs depend on a number of factors including size of the system site restrictions installation timetable Here are two typical ACO StormBrixx system configurations which utilize a mixture of installation techniques to provide a simple but strong and robust structure: Perimeter Ring Layout Concentric Ring Layout Perimeter ring layout For this configuration only the perimeter of the system is brick bonded. Internal units are a series of single, double, treble, or quadruple units. 1. Installer should ensure that footprint of the system is clearly marked out on a prepared and levelled base. Lay geotextile and /or geomembrane. 2. Perimeter edge of the system is laid first. Place two ACO StormBrixx tank bodies on the ground. Take a third tank body, invert it and place it in a brick bonded method on top of first two units. Continue laying bottom and top bodies alternately until a completely bonded outer ring is formed. 3. Assemble single, double, treble and/or quadruple units (see pg 10-11). Place units inside perimeter ring to suit and connect to adjacent units using ACO StormBrixx layer connector. 4. Repeat for subsequent layers using connectors to bond layers to one another

13 Concentric ring layout Ever decreasing rings converging towards center of the system. 1. Installer should ensure that footprint of the system is clearly marked out on a prepared and levelled base. Lay geotextile and /or geomembrane. 2. Perimeter edge of the system is laid first. Place two ACO StormBrixx tank bodies on the ground. Take a third tank body, invert it and place it in a brick bonded method on top of first two units. Continue laying bottom and top bodies alternately until a completely bonded outer ring is formed. 3. Repeat this installation method to create each internal ring. Each ring should be clipped to next outer ring using ACO StormBrixx layer connector (see pg 15). 4. It may be necessary to cut a body to complete the bond, particularly towards center of the system (see pg 16). 5. Repeat for subsequent layers using connectors to bond layers to one another a b c 3a. Alternatively, due to site limitations, it may be necessary to work from a corner or one end or side. Should this be the case then follow step 2 except that you should also commence the inner ring configurations at the same time, see images a - c, ensuring that you use layer connectors where necessary to bond unit rings and layers to one another. 13

14 Designing ACO StormBrixx System 1. Hydraulic design Hydraulic design looks at the temporary storage of water in storm events and its flow path, seeking to reduce the volume, speed, and frequency of surface water runoff. All of these factors will be site specific. Calculations for hydraulic design to be undertaken using methods highlighted in CIRIA C697 "The SuDS manual", or similar. 2. Structural design Structural design considers the load bearing capacity of StormBrixx to ensure the installed system can safely carry the loads it will be subjected to. The initial decision must be made on the type of system required, infiltration or detention/retention, and then the following design parameters should be considered: Soil type Vertical and horizontal loading Groundwater Depth of cover Surface finish Structural calculations can be carried out using the methodology detailed in CIRIA C680 Structural design of modular geocellular drainage tanks. 3. Maintenance All detention/retention/infiltration tanks will require periodic maintenance - check local, state and federal guidelines for scope and frequency. ACO StormBrixx open cell structure permits completely free access for CCTV and jetting equipment to inspect all levels and areas of the system. Loading design parameters for ACO StormBrixx Vertical loading on top face Lateral loading on side face Short-term ultimate compressive strength at yield (psi) A partial factor of safety materials, Fm, of 2.75 for ultimate limit state and 1.15 for serviceability limited state, should be applied to these values for a design life of 20 years. Minimum cover depths(1) over top of ACO StormBrixx Location Minimum cover depth (in) (2) Non-trafficked area i.e. landscaping 19.7 (3) Car parks, vehicle up to 2.75 tons gross mass 23.6 Car parks, occasional vehicle greater than 2.75 tons (4) gross mass 31.5 (1) Assumes 27 degree load distribution through fill material and overlying surface asphalt or block paving (2) Please check minimum frost cover depths for geographical location (3) Minimum cover depth to avoid accidental damage from gardening / landscaping work (4) Occasional trafficking by refuse collection or similar vehicles (typically one per week) Maximum installation depths (to base of units)(a). Design criteria in accordance with C680 guidelines* Soil description Typical angle of friction (B) (C) φ Maximum installation depth (feet) (to invert of structure) No groundwater present Trafficked areas (cars only) Groundwater present 3.28 ft below ground level (attenuation) Trafficked areas (cars only) Nontrafficked Nontrafficked Over consolidated stiff clay Silty, sandy clay Loose sand and gravel Medium dense sand and gravel Dense sand and gravel (A) Design table is only applicable for car parks or other areas trafficked only by cars or occasional refuse collection trucks or similar vehicles (typically one per week). Assumptions are made: - ground surface is horizontal - Shear planes and other weaknesses are not present within the structure of the soil (B) Loosening of dense sand or softening of clay by water can occur during installation. The designer should allow for any such likely effects when choosing an appropriate value of φ (C) The design is very sensitive to small changes in the assumed value of φ, therefore, it should be confirmed by a certified geotechnical engineer *Available from CIRIA website ( 14

15 Preparing for Installation Vertical and lateral layer connectors The ACO StormBrixx connector provides three different connections: Lateral unit to unit connection Align ACO StormBrixx units next to each other so that clip holes align. Push layer connector into hole until clip is properly seated. Single vertical connection Snap layer connector in half and push two ends together. Place this into lower unit and align top unit and lower into position. Double vertical and lateral connection To simultaneously connect units both laterally and vertically, join two layer connectors together. Adding side panels Side panels are used only around the outside perimeter of the tank. Push fit the side panel into the slots provided in the bottom and top tank bodies ensuring all clips are engaged. Two side panels are required on each length and one side panel on each width of a single cell configuration. Top covers ACO StormBrixx top covers are only required on the top surfaces of an installation. The top covers ensure the integrity of the geotextile / geomembrane and the final surface finish of the installation. Top covers are supplied as a 4-piece unit on a lightweight frame. They locate easily on the tops of the boxes and need only be lightly pushed in to ensure an exact fit. 15

16 Cutting the unit If required, ACO StormBrixx can be cut in half along the central rib. A handsaw or jigsaw should be used. Both halves of the unit can be connected to the rest of the system using the 3-way connector. Ensure the cut face is orientated towards the inside of the tank system, to prevent damage to the geomembrane/geotextile. Fitting the pipe connectors Using a hole saw or jigsaw cut appropriate diameter hole in side panel of ACO StormBrixx. Side panel has pre-set cut outs for 4" and 6" (100 and 150mm) pipe, and premarked eccentric cut outs marked on inside of panel to ensure lowest invert to the tank can be cut. Ensure that flange of pipe connector does not protrude below invert of the tank. Fix connector to the side panel through holes at corners of the flange. Ensure that pipe connector is fitted so that there is adequate spigot for the joining pipe work to connect to 3" minimum (75mm). The geomembrane or geotextile is fixed to flange ensuring a firm seal. Creating an inspection point The inspection point permits remote access and inspection and, where necessary, jetting of the system. The access arrangement enables inspection of all layers within the StormBrixx system. Cut circular hole in top tank body with a jigsaw. A cutting guide is provided- centered between the four columns. Holes should be cut in same location on all intermediate top and bottom panels to allow access to all layers of the tank. Place a inspection point connector over center of hole, ensuring flange covers all four columns. Using plastic rivets, fix flange to StormBrixx unit. If an extension piece is required, use 9" (225mm) dual wall pipe cut to length and attach with a proprietary coupling. Use StormBrixx 9" dia (225mm) ductile iron inspection point cover to complete installation. 16

17 Installing ACO StormBrixx System Detailed installation dimensions and methodologies will vary by site, local ground conditions and state design requirements should be adhered to. Step 1 Excavate hole or trench to required dimensions to receive StormBrixx tanks (allow additional 12" (300mm) on all sides for access), necessary pipework and any inspection chamber(s) and/or silt trap(s). Step 2 Ensure base of excavation is smooth and level and capable of withstanding required design loads, angle sides of excavation to prevent collapse, and ensure safe access/ conditions for site workers. Step 3 Lay 4" (100mm) compacted bedding layer for detention systems/ 4" (100mm) coarse sand for infiltration systems. Step 4 Lay geotextile to base sides of the excavation with minimum 12" (300mm) overlap at joints. Inspect geotextile for damage. Step 5 Install geomembrane liner to required standards and requirements, if required (infiltration systems do not require geomembrane). Step 6 Assemble StormBrixx units to required size and configuration, place on geotextile/ geomembrane. Ensure loose units are fixed together using StormBrixx layer connectors. Step 7 Form hole(s) in StormBrixx side panels using hole saw/jigsaw to receive inlet pipe (outlet/inspection/vent pipe if required). Insert pipe connector. Ensure top covers are installed on top layer of tank system. Step 8 Carefully cut geotextile/geomembrane around pipe protrusions. Seal geomembrane to pipe connector, if appropriate (Detention systems). Test all joints for leaks. Step 9 Continue with geotextile/geomembrane encapsulation. Step 10 Connect inlet/outlet/vent pipe and access chamber using appropriate adaptors. Only one Ø 4" (100mm) vent pipe is required per 80,729 ft² (7500m²) area to be drained. Step 11 Backfill evenly around excavation sides using sub-base or selected granular material in layers of 6-12" ( mm) and compact. Step 12 Use a 4" (100mm) minimum coarse sand protection layer over the top of the ACO StormBrixx units and then backfill. There should be a minimum 16"(400mm)backfill cover before compaction equipment is used. Step 13 The area should then be compacted using suitable compaction equipment. Step 14 Complete pavement construction or landscaping over StormBrixx system. Prior to final surfacing, the tank area should be fenced off with high visibility fencing and traffic prohibited from using the area of the tank. StormBrixx is not designed to withstand loads from construction traffic and this action will protect the long term loading performance of the tank s structure. 17

18 ACO StormBrixx Technical Data Dimensions Length Width Depth Weight Part No. in (mm) in (mm) in (mm) lbs (1205) (602.5) 13.5 (343) (1205) (602.5) (612) (2) 12.0 (305mm) 13.5 (343mm) StormBrixx tank body (1205mm) (649mm) (610mm) 25.5" " (342mm) (343mm) (306mm) (305mm) 12.05" StormBrixx single stack 4.30 (109mm) 4.30 (109mm) 47.44" (1205mm) (1200mm) (280mm) (600mm) (320mm) (584mm) (320mm) Side wall (584) (580) 3.35 (85) (550) (550) 1.69 (43) (100) 1.57 (40) 1.81 (46) (580mm) Top cover (set of 4) (550mm) (550mm) Layer connectors 18

19 Pipe connectors with flange Dimensions Weight Part Length Width Depth No. in (mm) in (mm) in (mm) lbs in. Sch. 40 (100) 6 in. Sch. 40 (150) 8 in. Sch. 40 (200) 12 in. (300) Access chamber (594) (594) (610) Access chamber extension shaft dia. (450) Access chamber ductile iron cover (40 ton load rating) (528) 4.33 (110) Inspection point shaft with flange dia. (225) 7.87 (200) Inspection point ductile iron cover (40 ton load rating) (410) Frame (410) Cover dia 8.86 (225) 7.09 (180)

20 Other ACO products Exernal drainage ACO Sport Surface drainage and building accessories for track & field. ACO Infrastructure Surface drainage products engineered for highways, urban roads and bridges. Aquaduct Custom design and manufacture of fiberglass trench drain systems. ACO Duct Linear ducting system with removable solid covers. ACO Environment Oil water separators and spill containment systems. ACO Wildlife Tunnel and fence system to guide amphibians and other small creatures safely across roads. ACO StormBrixx A unique and patented plastic geocellular storm water management system. ACO Self Simple drainage and building components for use around the home, garden and office. Building drainage ACO Stainless Stainless steel trench drains. ACO Floor Drain Stainless steel floor drains. ACO BuildLine Drainage products for thresholds, balconies, green roofs and building façades. ACO Pipe Stainless steel push-fit pipe system. ACO ShowerDrain Shower drainage. QuARTz Designer bathroom floor solutions. ACO, Inc. West Sales Office Northeast Sales Office Southeast Sales Office 825 W. Beechcraft St Pinecone Drive 4211 Pleasant Road Casa Grande, AZ Mentor, OH Fort Mill, SC Tel: (520) Tel: (440) Toll Free: (800) Toll Free: (888) Toll Free: (800) Fax: (803) Fax: (520) Fax: (440) Electronic Contact: info@acousa.com 20 May 2018 ACO, Inc. All reasonable care has been taken in compiling the information in this document. All recommendations and suggestions on the use of ACO products are made without guarantee since the conditions of use are beyond the control of the company. It is the customer s responsibility to ensure that each product is fit for its intended purpose and that the actual conditions of use are suitable. ACO, Inc. reserves the right to change products and specifications without notice. Re-order Part # SB001 v1.0