Skriv til os

Requirements specification

Requirements specification from public clients

Supply and installation of a system of watertight containers that can be assembled as modules into one or more interconnected watertight basins.

The size should be manageable for individuals to install. Aim for a size of 700 mm x 700 mm x 615 mm and a maximum weight of 21 kg per unit. The containers must be joinable and watertight at the connection, where the pipe holes are not smaller than ø 500 mm. The pools must be able to be pressure tested at a maximum pressure of 0.15 bar, which must be verified by engineering calculation.

Containers fit different pipe dimensions

The tanks must be able to be connected to different pipe sizes from DN110 to a maximum size of DN 500 pipes directly in the basin.

After installation, it must be possible to replace individual containers without removing and reinstalling the entire pool. A repair unit must be available to replace defective containers.

You must be able to access the cable trays underneath the pools in the event of damage.

The pools must be able to withstand a static pressure load of min. 100 kN per m2 when installed 40 cm below ground level and must be able to be installed in at least a class T3 road.

The maximum deflection at the center of the surface of the container when buried 40 cm in the roadway (10 cm asphalt and 30 cm stable) is 2mm, which must be documented.

The basins must be able to be cleaned via a minimum pipe hole of Ø500mm in all containers and the water flow must be unobstructed throughout the entire pipe hole diameter of 500mm.

The pools must be able to be fed with Ø500 mm and Ø425 mm pipes from the top of the pools for inspection purposes.

Pools must be inherently waterproof and should not be wrapped in membranes to achieve watertightness. The pools must have access to a sand fill layer or 2/5 crushed stone on the sides of at least 20 cm and a stable gravel layer 0-32 on top of the pools with a 5 cm protective layer of stone-free material.

The containers must be able to be built around e.g. pipe trays and still form an integrated basin without the use of pipes.

Stackable containers

The containers must be stackable at a height of 2.46 meters with the same minimum surface pressure. 100 kN/m2 and where the top layer is from 40 cm below ground level. The tanks must be able to access an infinite width and length, and the tanks must be set up as connected vessels, where the height can be divided into several independent basins.

The pools must be temperature independent, oil resistant and have a lifespan of +75 years. Documentation from a recognized independent GTS institute is expected.

CO2 accounting for the modular pool must be shown and it must be possible to describe how many tons of CO2 are recorded per m3 of installation.

Basins must be able to be installed to existing pipe systems where all joints are oil resistant and EPDM is not allowed.

Pools must be buoyant in a width of up to 5.3 meters at a height of 1.845 meters. The buoyancy protection must be partially integrated into the pool and where the excavation does not take up more than 15% of the pool width.

The containers must be able to access various accessories that can be integrated into the pools. For example, road water must be able to be cleaned of PAHs and heavy metals. You must be able to insert, replace or access different cleaning filters from the inspection pipes in the pools.

The containers are preferably locally produced or that Danish labor can be demonstrated where apprentices with Danish citizenship are part of the manufacturer’s set-up.