Germany – Architectural, construction, engineering and inspection services – Umbau eines Klassentraktes im Untergeschoss der Otto-Hahn-Realschule Plus in Bitburg; hier: Planungsleistungen der Technischen Ausrüstung (Los 2)

The secondary school (built in the late 1960s) is a four-story building with an adjacent gymnasium in the residential area at Talweg 7, 54634 Bitburg. The building features its own gas heating system with radiators, decentralised hot water preparation, a lift, and a PV system; the main electrical distribution was upgraded in 2012. The gymnasium is supplied with media technology from the school building. Following a water damage incident in October 2025, the basement of the east wing was extensively demolished (damage analysis/demolition largely completed). The upcoming renovation is to be used to develop and implement a future-proof, space and usage concept in the basement that can be applied to further floors; additionally, the gymnasium is to be supplied autonomously. The previous classroom wing comprised: 5 classrooms, archive room, student common room, caretaker common room, science classroom with ancillary room, and boiler room. The basement classroom wing is to be converted into an open, multifunctional learning landscape (boiler room remains untouched). Currently, 115 students are taught in five rooms; in the future, six classrooms for 150 students are planned. For the differentiated teaching approach, small learning landscapes with three to four classrooms and an adjacent open differentiation room are to be created. After the renovation of the classroom wing, the following room uses are planned: - Six equally sized classrooms - At least two differentiation rooms - A corridor area that can be used as a learning landscape for open learning. - A boiler room (to be excluded from planning) - Sufficient storage space The technical building services (TGA) planning essentially comprises the following measures: Heating, ventilation, sanitation, wastewater, gas systems • Planning of new, central washbasin niches in the corridor areas of the basement. • Demolition of all media connections in the specialist classroom • Autonomous supply to the gymnasium: Media-technical separation of the gymnasium from the main building (cold drinking water, heating, MSR) with simultaneous, autonomous supply • Heat transfer: Conversion of the heat supply in the basement to a water-based surface heating system (installation in the wet screed). • Installation of decentralised ventilation units with HRG per classroom, demand-controlled via adjustable CO2 limit value, • Pipe routing: Complete re-conception of the pipe routes for the trades „Heating“ and „Sanitation“. Relocation from the floor channel to the ceiling areas to optimise maintainability. Electrical & IT infrastructure Strong current systems: Installation of a new floor sub-distribution in the basement; connection to the NSHV in the ground floor via crawl space (incl. partitions); new installation of the cable routes in the suspended ceiling and baseboard channels. • Lighting & Automation: LED system lighting with presence and daylight-dependent control; integration into the existing KNX system (central lighting). Individual room control of heating via KNX. • Telecommunications & IT systems: o FMA: Expansion and adaptation of the existing fire alarm system according to DIN 14675 (basement) incl. updating of the fire brigade running cards. o IT network: Area-wide LAN cabling (Cat.7/Cat.6a) incl. 19” network cabinet in the basement and fibre optic uplink to the server room in the ground floor. Lifts • Adaptation of the shaft pit in the basement to the new striking height. • Relocation or complete re-manufacture of the shaft doors and portals in the new floor. • Shortening or lengthening of the guide rails. Checking of cable lengths or hydraulic cylinders. If necessary, the drive (machine room or drive room) must be re-dimensioned for the changed conveying height. • Reprogramming of the stop control. A preliminary design plan of the project planner has been prepared and already coordinated with the fire protection department of the Eifelkreis Bitburg-Prüm. In principle, the conversion into an open learning landscape is possible from a fire protection point of view. This requires the creation of visual connections within these learning clusters. By creating a second escape route to the outside, the basement is divided into two areas as a corridor school, which form the learning clusters. The load-bearing capacity of the existing structure has been checked and evaluated with regard to the planned construction project. In summary, it can be stated that the planned conversion of the main building according to the learning house concept is technically feasible. Medium- and long-term, the objective of this space and usage concept is to be transferred to the further floors of the Otto-Hahn-Realschule Plus. The aim is to complete the construction project by the start of the school year 2027/2028, so that school operations can resume afterwards. The construction work is carried out during ongoing school operations. Noise-intensive work is to be carried out outside of teaching hours, preferably in the afternoon and during school holidays. The documents for the preliminary design of the project planning, the planning documents and the expert opinion of the structural engineering planning are included in the tender documents. The available planning documents include phases 1 and 2.