Enter the constraints
Required storage, available footprint, outlet depth, proposed cover and surface load.
Stormwater tanksRequest a quoteEngineered underground storage
Engineered stormwater storage. Configured for your site.
Complete modular detention, retention and infiltration systems for Australian projects from approximately 100 m³.
Client-built preliminary layoutComplete system supplyChecked before quote issue
0.23 m³net per module
≈100 m³minimum project
AU-wideproject delivery
Module shownM2025 ULTRAVirgin polypropylene
Build the tank. Then verify the quote.
Project layout+Current component rates+Landed & local freight+Kontain verification
A project-led quote workflow
Design the tank first. Verify the project second.
The module is only one part of a dependable underground tank. We configure the storage volume, footprint, depth, load basis, wrapping and penetrations before calculating and checking the complete project supply.
Generate a layout
Module count, tank dimensions, layers, net capacity and preliminary wrapping quantities.
Review, call and quote
Kontain checks current costs and technical interfaces, confirms the project by phone and then issues the formal quote.
One module. Three system outcomes.
Wrapping controls what the tank does.
Kontain supplies the M2025 crate assembly with the containment or filtration envelope and project-specific pipe penetrations—not a loose pallet of modules.
01
Detention / attenuation
Impermeable liner and protective geotextile for controlled storage and discharge.
Typical purposePeak-flow control and downstream capacity management.02
Infiltration / soakaway
Permeable geotextile envelope where verified soil and groundwater conditions permit infiltration.
Typical purposeSource control and groundwater recharge.03
Harvesting / retention
Prefabricated liner, protection layers and formed pipe boots for non-potable reuse systems.
Typical purposeIrrigation, wash-down or process reuse with suitable treatment.M2025 product platform
A repeatable 500 mm structural cell.
The assembled module uses opposing structural plates, side panels, top covers and keyed plugs to create a continuous geocellular tank. The modular geometry gives the layout engine a fixed basis for length, width, layers and accessory take-off.
1,000 mmassembled length
500 mmassembled width
500 mmassembled height
0.23 m³calculator net volume
Material and strength options
One geometry, project-specific product selection.
Polymer grade and published strength class are confirmed against the project load case. Colour is not used as the sole acceptance control; procurement records and batch documentation are required.
R45 · M2025-E
Recycled PP · 11.0 kg
Manufacturer-published 45 t/m² class. Feedstock source and equivalent independent structural evidence have not yet been supplied to Kontain.
R60 · M2025 ULTRA
Recycled PP · 13.0 kg
Manufacturer-published 60 t/m² class. Feedstock source and equivalent independent structural evidence have not yet been supplied to Kontain.
V60 · M2025 ULTRA
Virgin PP · 12.6 kg
3248R (RP250NQ) virgin PP from Fujian Refining & Petrochemical. Current Intertek evidence applies only to the tested virgin specimen and configuration.
Complete system schedule
Everything needed to form and wrap the tank.
M2025 modulesSide panels & top coversHorizontal & vertical plugsProtective geotextilePrefabricated linerProject-specific pipe boots
01
Side plate
Four 500 × 500 mm pieces cover each square metre of exposed vertical tank face.
02
Top cover
Top layer only: eight covers per module, equivalent to 16 covers per square metre of roof.
03
Vertical plug
Four per module at every stacked interface; no vertical plugs are installed above the top layer.
04
Horizontal plug
Three per module on every layer to key adjacent modules across the tank plan.
Worked component example
10 m × 10 m × 1.5 m tank
Three module layers with 200 modules per layer. The 60 m² of exposed vertical side area requires four side plates per square metre.
- Modules
- 600
- Horizontal plugs
- 1,800
- Vertical plugs
- 1,600
- Top covers
- 1,600
- Side plates
- 240
Product and component imagery supplied by the M2025 manufacturer.
Controlled installation guidance
Plan the excavation, enclosure, assembly and backfill as one sequence.
The Rev 08 M2025 guide turns the system into a practical set of responsibilities, hold points and inspection records. It covers soakage, lined attenuation and harvesting systems without replacing the approved drawings, geotechnical advice or the engineer's project-specific design.
Before excavation
Confirm current underground-services information, tank set-out, formation, groundwater and a safe excavation method. Benching, battering or shoring must follow the competent person's assessment and applicable WHS requirements.
Choose the enclosure
Use a permeable nonwoven wrap for approved soakage systems, or a protected LLDPE liner for detention and harvesting. Liner panels, seams and pipe boots are coordinated before concealment.
Release the hold points
Verify formation level and planarity, enclosure condition, aligned module columns, all scheduled plugs, perimeter panels, top covers and pipe interfaces before closing the system.
Backfill and commission
Place compatible material symmetrically in controlled lifts. Observe compactor and plant restrictions, flush upstream pipework, inspect the control system and complete the handover records before operation.
Accessible flow control
For attenuation systems, the external flow-control pit should extend to finished surface with its lid at ground level. Keep the low-level outlet at the tank base and use an engineer-sized, accessible flow-control device.
No tank entry
Do not enter the module tank. Inspection and maintenance are carried out through the designed pits, pipework and accessible external components.
Evidence has limits
Compression and 30-day creep results apply to the tested virgin V60 specimens and configurations—not to recycled variants, allowable traffic loads, a design life or construction-plant approval.
Preliminary design calculator
Convert site constraints into a buildable tank arrangement.
This tool uses a conservative 0.23 m³ net storage per M2025 module. It rounds the result to complete rectangular module rows and layers.
Project inputs
Preliminary configuration
300.2 m³calculated net storage
15 m×14.5 m×1.5 m
1,305M2025 modules
3module layers
217.5 m²tank footprint
0.2 m³rounded spare storage
Preliminary supply schedule
Modules1,305 units
Modules per layer435 units
Horizontal plugs3,915 units · 3 per module, every layer
Vertical plugs3,480 units · 4 per module below top
Top covers3,480 units · top layer only
Exposed vertical side area88.5 m²
Side plates354 units · 4 per m²
Prefabricated liner allowance603 m²
Protective geotextile allowance1,205 m²
Formed pipe boots2 nominated
Accessory scheduleReconcile exact counts with the approved layout and packing list
Product basisVirgin V60 has the current tested-sample evidence basis; project verification is still required
- The entered cover is a user planning assumption, not a manufacturer minimum or a traffic approval.
- Short-term compressive strength is not an allowable trafficked design load.
Submit the configured tank for review
Build the layout. Kontain checks the price.
The generated brief provides the quantities and project location needed to check current part rates, liner fabrication, overseas freight, Australian customs and clearance, and metro delivery. Kontain will call before issuing the formal quote.
Preliminary planning output only—not a certified design, drainage calculation, structural design or construction document. Final configuration depends on project drawings, geotechnical conditions, groundwater, construction loading, pipework and authority requirements.
Technical basis
Strength numbers need context.
A published short-term compression value is not proof that a tank can be placed beneath traffic. Cover, backfill stiffness, wheel load distribution, groundwater, lateral pressure, construction plant and long-term creep all affect suitability.
Independent laboratory report reviewed
The tested virgin V60 specimen exceeded the machine limit without fracture.
Applicant-supplied virgin V60 samples measuring 1,000 × 500 × 500 mm were tested under a rigid full-surface platen at 20 mm/min. The Intertek report records the method as CIRIA C737-2016 plus client requirements; this is not CIRIA certification or approval.
>600 kPatested lower boundNo fracture at the 300 kN equipment limit over the reported 0.5 m² full-surface set-up. Ultimate capacity remains unknown.
196 kN/m²lateral surface result98 kN maximum load with lateral plates installed.
01 / Sample
Results apply only to the tested virgin V60 specimens and reported configurations; supplier batch traceability to current production remains a project acceptance item.
02 / Boundary
Top loading excluded lateral plates; the lateral surface test included the side plates.
03 / Meaning
The non-failure result means the short-term tested-sample resistance was greater than the equipment limit. It does not quantify ultimate strength or allowable design resistance.
04 / Status
The report is a performance test, not Intertek product certification, CIRIA approval or proof of 50-year strength.
| Variant | Material / resin source | Nominal module mass | Published class | Current evidence boundary |
|---|---|---|---|---|
| V60 | Virgin 3248R (RP250NQ) random-copolymer PP from Fujian Refining & Petrochemical; manufacturer-declared glass-fibre/additive system. | 12.6 kg | 60 t/m² | Intertek short-term compression and 30-day creep evidence applies only to the tested virgin specimen/configuration. The tonne class and >600 kPa lower bound are not allowable project loads. |
| R60 | Recycled PP; feedstock origin, recycled-content controls, contamination limits and final compound properties not documented in the current evidence pack. | 13.0 kg | 60 t/m² | No equivalent variant-specific independent compression or creep evidence supplied to Kontain. V60 evidence is not transferred. |
| R45 | Recycled PP; feedstock origin, recycled-content controls, contamination limits and final compound properties not documented in the current evidence pack. | 11.0 kg | 45 t/m² | No equivalent variant-specific independent compression or creep evidence supplied to Kontain. V60 evidence is not transferred. |
| All variants | 1,000 × 500 × 500 mm nominal assembled geometry | Manufacturer-quoted nominal masses | Product designations only | Final cover, traffic, tank height, pavement, soil, construction loads, groundwater and allowable deformation require project-specific verification. |
Long-term behaviour
Review creep test duration, extrapolation method, temperature basis, safety factors and allowable strain.
Ground interaction
Check founding stiffness, backfill grading and compaction, groundwater and construction-stage stability.
Applied loading
Model cover depth, wheel and axle loads, dynamic effects, pavement build-up and adjacent structures.
Containment interfaces
Detail liner, geotextile protection, welded seams, pipe boots, access, vents and maintenance.
Product classes and masses are manufacturer-published values. Compression results are summarised from report 260304095GZU-001 and apply only to the tested virgin V60 specimens and stated conditions. The result stopped at the equipment limit rather than failure, so it establishes a lower bound only. The complete report is available for qualified project review subject to distribution permissions.
Quote verification workflow
Automated inputs. Personally checked before issue.
01
Configured tank, module count and accessory schedule
Client inputs02
Current components, ocean freight, customs and clearance
Cost database03
Metro freight for major capital cities or project delivery
Location basis04
Technical, commercial and project interface check
Kontain reviewWhy every quote is checked
The system can assemble a preliminary cost basis from the tank configuration and current logistics data. It cannot confirm missing drawings, unusual loads, access constraints, regional freight or incomplete pipe interfaces. Kontain reviews the submission, calls to confirm the project and only then issues the formal quote.
Configure your tankStraight answers
Before you specify a modular tank.
Can the calculator replace a civil or structural design?
No. It produces a preliminary module arrangement and material allowances. Final drainage, structural, geotechnical and construction design must be completed for the project.
Why is the minimum project size approximately 100 m³?
Kontain manufactures against confirmed projects rather than holding finished tank stock. Tanks from approximately 100 m³ can be quoted, but smaller or part-container shipments usually carry higher port handling and freight cost per cubic metre. Final minimums depend on the selected product, component pack and delivery programme.
Does 60 t/m² mean ULTRA is automatically suitable beneath a road?
No. That is a published short-term compression class, not an allowable trafficked-system capacity. Cover, pavement, backfill, creep and load distribution must be checked.
Do the recycled R60 and R45 variants share the virgin V60 test result?
No. The current Intertek compression and 30-day creep reports apply only to the tested virgin V60 specimens and reported configurations. Equivalent variant-specific evidence has not yet been supplied for R60 or R45.
Can Kontain supply the liner with pipe penetrations already formed?
Yes, subject to confirmed tank dimensions, pipe material, diameter, orientation and invert levels. Prefabrication reduces uncontrolled field detailing but does not remove the need for installation QA.
Is installation guidance available for tendering and site planning?
Yes. The M2025 installation guide covers responsibilities, enclosure options, excavation controls, assembly, liner and geotextile placement, pipework, backfill, commissioning and QA hold points. Approved project documentation still governs construction.
Will the calculator issue an instant binding price?
No. It creates the project configuration and quote basis. Kontain checks current supply and logistics costs, confirms the technical inputs with you by phone and then issues the formal quote.
Australian project support
Start with the footprint, depth and storage volume.
We will turn the preliminary layout into a checked supply schedule, confirm the project with you and issue the formal quote.