Planning of technical equipment (AGR 4, 5) according to § 55 HOAI in particular KG 444 and 457 according to DIN 276

The Landkreis Mittweida Krankenhaus gGmbH operates a hospital for standard care of various disciplines at the Mittweida site. As part of the construction phases realized until 2006, the rooms relevant at the time of construction were equipped with network sockets (usually 1 double socket, stand Cat. 5).

In the house there are two server rooms supplemented by six distribution rooms, in which the copper tertiary cabling runs.

The fiber optic secondary cabling as well as the copper cabling dates from the years 2000 to 2006, based on OM3 multimode cabling with varying numbers of fiber optic connections to the adjacent distribution/server rooms. As a result, data transmission with a maximum of 1 Gbit/s is possible in the house. The network switches were equipped with simple devices with 1 Gbit/s upload and simple power supply.

The existing network cabling no longer meets the requirements of a modern IT hospital structure. The requirements due to the increasing number of end devices at the workplace (e.g. in the context of the telematics infrastructure, etc.) cannot be adequately met. Existing network sockets are "doubled" by so-called "Dopplers" at the expense of bandwidth. As a result, the bandwidth available per device drops to a maximum of 100 Mbit/s, which can drop even further due to the quality of the copper cabling. In some cases, maximum connection speeds of 10 Mbit/s are possible. It is also not possible to be equipped with comprehensive medical WLAN due to the existing infrastructure.

On this basis, the further digitization of the hospital is not possible. These state of affairs are to be changed by the renewal and expansion of the secondary and tertiary cabling throughout the building as well as the renewal of the network technology.

It is planned to create a separate distribution room on each floor and in each fire compartment and to connect it redundantly with sufficient fiber optic connections to the two redundant service rooms. Thus, the cascaded fiber optic connection structure is to be replaced by a star-shaped one. This leads to a further 17 new distribution rooms.

All distribution rooms are to be approached with modern OM4 fiber optic cables. By replacing the already procured switch technology, transmission speeds of 50 Gbit/s can be achieved in the backbone, aiming for 25 Gbit/s. The availability can be significantly increased by the already procured switches with PoE and redundant power supplies. Additional end devices without their own power supply can then be supplied with energy via PoE via the network cabling.

The tertiary network is also to be expanded accordingly. In addition to the LAN expansion, a area-wide W-LAN network is to be built. The basis for this is formed by the results of the illumination realized.

When planning, it should be noted that the implementation must take place within performance phase 8 during ongoing hospital operations.

In summary, the planning task thus includes:

- Renewal and expansion of secondary cabling throughout the hospital complex

- Expansion of IT distribution rooms (approx. 25 new network cabinets)

- Expansion of tertiary cabling including installation of comprehensive Wi-Fi throughout the hospital complex (expansion by approx. 700 network sockets)

- Adaptation of the tertiary cabling in the entire hospital complex (adaptation of the existing connections to the new distributors)

The service profile covers the scope of application of the HOAI §§ 53ff. (in particular cost groups 444, 457 according to DIN 276) in the work phases 1-3, 5-8.