Application · Municipalities
Water-resilient towns and cities
Municipalities have to cope with heavy rain and drought at the same time – on land that is already in use. JUMBO BLOCK creates the missing retention space beneath streets, car parks, squares and parks.
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Hazard prevention
Protection from heavy rain where it does most damage
More frequent extreme events and hydraulic runoff peaks overload sewer networks within minutes. Open retention basins need land that is scarce in built-up areas. JUMBO BLOCK achieves high storage density precisely where sealing is greatest – protecting buildings, utility networks and public safety.
- Throttled discharge relieves sewers and receiving waters
- Supports separation of rain and foul water (separate system)
- Open or closed retention spaces, also suitable for building over
Water for dry periods
Store instead of drain
Stored rainwater supplies street trees and green spaces in heatwaves, cools the neighbourhood and reduces drinking-water demand. Infiltration additionally strengthens groundwater recharge.
For planning and administration
What municipalities gain
Land stays usable
Streets, markets, car parks and parks keep their function – the storage lies beneath.
Predictable costs
Free preliminary design with Hydro, Plan and Budget; reliable figures for councils and funding applications.
Accessible utilities
In the walk-in cross-section, utility lines can be inspected and repaired without digging up the road.
Extendable
Modules can be added later as development areas grow or requirements increase.
Verifiable
Optional monitoring documents fill levels and events for citizens, politicians and supervisors.
Durable
Mineral concrete, recyclable, designed for 80–120 years.
Discuss your project
We support you from initial sizing through planning and structural design to operation with monitoring.
FAQ
Frequently asked questions
Can JUMBO BLOCK be installed beneath public roads?
Yes. The system is designed for traffic loads to EN 1991-2, load model LM1, and is verified structurally for each project. It can lie beneath roads, car parks and squares.
Can an installation be enlarged later?
Yes. Modules are laid in a single layer and can be added as needed – for example when a development area grows.
Does JUMBO BLOCK also help against heat and drought?
Yes. Stored rainwater can be used for urban greenery; the underground storage also acts as a passive heat buffer.
Read on
True Sponge City 2.0
Store water, buffer heat, use land twice.
Roads & transport infrastructure
Retention integrated into the road.
KRITIS · NIS-2 · CRA
Duties for utilities.