This tender concerns framework agreements for the supply of underground rainwater systems to Frederiksberg Municipality. The rainwater systems will be used in connection with Frederiksberg Municipality's climate projects, where water will be stored.

The invitation to tender concerns the following two lots:

1. High-altitude rainwater systems

2. Deep-lying rainwater systems

High-altitude rainwater systems are located 40 cm or deeper below ground level. Deep-lying rainwater systems lie 80 cm or deeper below ground level.

When implementing specific climate protection projects, a project can potentially contain both high-lying and deep-lying rainwater systems, which in this case will mean orders from both sub-agreements.

Frederiksberg Municipality expects to need approx. 20,000 m3 of rainwater storages by 2027.

The rainwater systems must meet some special requirements in order to function in Frederiksberg.

The future high-altitude rainwater systems must therefore:

i. Be high-altitude. That is, they must be able to be laid out 40 cm. under finished terrain. This is because there is a desire for the rainwater reservoirs to be able to be placed over the existing pipes and pipes that are in the ground, in order to avoid pipe changes, which are both expensive and time-consuming.

ii. Be able to withstand a traffic load of minimum traffic class T3, as we have a lot of traffic in the city and most of the areas where we can build our cloudburst projects are located in the roads.

iii. Preferably be simple and quick to build and repair, including re-establishing roadworks/wiring works. As we work in a densely built-up city, where there is minimal space for construction sites, as well as great congestion, it is necessary that the magazines can be built and re-established with as small a construction site and as short a construction time as possible.

See also terms in Requirements specification and framework agreement for lot 1.

Frederiksberg Municipality expects to need approx. 13,400 m3 of rainwater storages by 2027.

The rainwater systems must meet some special requirements in order to function in Frederiksberg.

The future high-altitude rainwater systems must therefore:

i. Be deep-seated. That is, they must be able to be laid out 80 cm. under finished terrain.

ii. Be able to withstand a traffic load of minimum traffic class T3, as we have a lot of traffic in the city and most of the areas where we can build our cloudburst projects are located in the roads.

iii. Preferably be simple and quick to build and repair, including re-establishing roadworks/wiring works. As we work in a densely built-up city, where there is minimal space for construction sites, as well as great congestion, it is necessary that the magazines can be built and re-established with as small a construction site and as short a construction time as possible.

See also terms in Requirements specification and framework agreement for lot 2.