Germany – Engineering services – Neubau 2-gruppige KiTa mit Vereinsräumen IG Waid, Weinheim - Tragwerksplanung

The city of Weinheim intends to replace the "Kita Waid" nursery on the property at Hammerweg 7 in 69469 Weinheim, plot no. 13113. The subject of the project is the construction of a two-group nursery including rooms for the IG Waid. The reason for the new building is significant structural defects in the existing building. The approximately 1,750 m² property is located on the eastern edge of an existing residential area. The property currently houses the existing nursery in a basement building that was originally built as a school building. The existing open spaces are mainly used as outdoor play areas and are largely green. The property has a slight inclination to the west. In addition, there is a significant height difference of almost 3 m in the northwest area of the property. The topographical conditions are to be taken into account, particularly in the arrangement of the building, the barrier-free development and the drainage of the property. A special condition of the project are the existing soil conditions. According to the results of the available exploratory soil investigation, the low-load-bearing, soft to partially fluid silty layers are unsuitable for a conventional shallow foundation. A deep foundation using pile systems is therefore recommended for the planned replacement building. The soil investigation recommends ductile cast-in-place concrete piles with casing as a technically and economically suitable foundation type. The geotechnical boundary conditions are to be taken into account in the further planning process and coordinated with the structural and drainage planning. A space programme coordinated with the parties involved is available for the development of the replacement building. In addition to the functional requirements of a modern two-group nursery, the integration of the rooms of the IG Waid, the necessary outdoor play areas and the necessary access and parking areas on the property must be taken into account. The existing tree population is to be assessed in the further planning process in terms of its conservation value and any necessary protective measures. Within the framework of a feasibility study, four planning variants were developed and examined and compared with regard to their urban planning, functional, economic and technical feasibility. A single-storey replacement building with retention of the characteristic tree population was selected as the basis for further planning. The preferred variant provides for a single-storey replacement building in the eastern area of the property with a gross floor area of almost 1,000 m². A rectangular building with targeted building recesses and a thus loosened, pavilion-like building structure is planned. A key design goal is the extensive retention and integration of the existing characteristic tree population. The property is accessed and the necessary parking spaces are arranged via Hammerweg. Due to the single-storey concept, the building can be fully barrier-free. During the construction period, an interim solution for the nursery is currently required, which is not part of the tender. The variant developed and preferred in the feasibility study forms the basis for further planning. Further planning objectives are listed below: Investigation of conventional and modular construction methods, Passive House orientation and prospective target Plus Energy balance, regenerative energy supply, CO² footprint and ecological criteria, examination of roof use as additional play area. The cost estimate (as of 07/2026) amounts to 4,088,444.56 € gross and is broken down as follows: Lot 300: 2,950,537.50 € gross Lot 400: 1,137,907.07 € gross The subject of this tender is the structural design according to §§ 49 ff. HOAI with phases 1-6, as well as special services from phase 8. Initially, a phased commissioning will take place. In stage 1, phases 1-3 will initially be commissioned, in stage 2 phases 4-6. There is no legal entitlement to full commissioning. The following schedule is envisaged: - Start of planning: May 2027 - Start of construction: 3rd quarter 2028