Germany – Construction work – CCLXXXIV-3-2024-BM-Große Langgasse und Steingasse Heizung Heizungsinstallation in 55116 Mainz

The Wohnbau Mainz GmbH is constructing a multi-storey residential building with a basement on the site at Große Langgasse 10, 16 and Steingasse 14, 16. This bill of quantities requests a tender for the heating trade. Heat energy supply is provided via the district heating network of the Mainzer Netze GmbH. The hot water supply is provided centrally via a storage charging system. The connection conditions or TAB of the Stadtwerke Mainz must be observed. hƩps://www.mainzer-fernwärme.de/assets/pdf/tab.pdf. Each floor will accommodate several residential units with different usable areas:

- Basement with storage and technical rooms.

- Ground floor with commercial units, waste room

- 1st floor to top floor with 44 residential units

Services to be offered, among others:

Drinking water heating system in storage charging principle

2,500 m² underfloor heating

44 heating circuit distributors

15,500 m piping 16x2.0 mm for the underfloor heating

19 heating elements

2 underfloor convectors

14 m C-steel piping DN 12

20 m C-steel piping DN 15

40 m C-steel piping DN 20

70 m C-steel piping DN 25

20 m C-steel piping DN 32

100 m C-steel piping DN 40

65 m C-steel piping DN 50

30 m C-steel piping DN 65

20 m PE-RT/AL/PE-RT piping d16

25 m PE-RT/AL/PE-RT piping d20

80 m PE-RT/AL/PE-RT piping d25

160 m PE-RT/AL/PE-RT piping d32

100 m PE-RT/AL/PE-RT piping d40

30 m PE-RT/AL/PE-RT piping d50

140 m metal composite pipe d16

90 m metal composite pipe d20

60 m metal composite pipe d25

The completed bill of quantities with prices, the GAEB file, and the required forms must be submitted. Start of execution: 15.03.2027 End of execution: 12.11.2027