Germany – Engineering services – Neubau "Haus für Menschen mit Behinderung", Bietigheim - Tragwerksplanung

The building structure for the "Haus für Menschen mit Behinderung" (HfMmB) is planned as an extension of the Seniorenzentrum as a gabled roof house with 3 storeys. The ridge line in the north-south direction corresponds to the overall ensemble and continues the traditional building structure on Wilhelmstrasse. To the west of the building, there is a 3-storey balcony structure in metal construction, which expands the living areas of the residential groups. The open space develops opposite the outdoor areas of the neighbouring day care centre, thus promoting a spatial and social connection between the resident groups. On the eastern entrance side, the partial plot is connected with a public passageway that leads to the northern Kirchstrasse. The eaves height is set at +9.50m, slightly below the contour of the planned Seniorenzentrum, as a raised ground floor can be dispensed with. The roof pitch and ridge height approximately correspond to those of the Seniorenzentrum. A precise plot formation in demarcation from the neighbouring ensemble has so far only been made in the sense of the scope of the B-Plan. There, a distinction is made between the project-related and the development plan part. In the sense of the overall project, easements will have to be agreed, for example for the passageway and the position and development of the ancillary facilities for waste and bicycles.

Uses

• 3 residential groups with 6 residents each (18 residents)

• each room with its own barrier-free bathroom (level-access shower 120x120cm)

• room widths of 3.25m (>3.20m), room size 16.90m² (>16.00m²) cf. LHeimBauV0

• living area with 45m² for 6 residents

• 1x caretaker area on the ground floor

• 5 apartments, which can be accessed separately from the staircase

• partial basement with technical areas, storage areas, WC for visitors, IT, laundry room, etc.

• A connection to the underground car park of the Seniorenzentrum has been abandoned for cost reasons

• technical areas (heating and electrical) according to the specifications of the specialist planning for fire protection

• The building is classified as GK3

• staircase (necessary staircase) as 1st escape route

• 2nd escape route via mobile ladder with extension ladder (OK FFB 2.OG< 8.00m)

• distance to the public traffic area <50m

• additional possibility of access via escape balcony at the end of the corridor on the 1st and 2nd floor

• parking area for the lifting rescue vehicle on the public traffic area (Wilhelmstrasse)

Building Services

The energy concept is to be evaluated according to the specifications of the changed client, inter alia, with regard to the targeted energy standard, the ventilation systems and/or certifications. So far, a solution with a heat pump (air-water) as an outdoor unit has been envisaged. A corresponding installation site in the open space would still have to be defined, as there is no flat roof available above the 2nd floor for this purpose.

Structure

The building structure with regular load-bearing axes at a distance of 4.0m in conventional solid construction represents an economical solution. The solid flat ceilings (approx. 22cm), load-bearing partition walls with 20cm (possibly 24cm staircase in the sense of sound insulation), as well as load-bearing outer walls in 20cm silicate brick + WDVS form the structural basic structure.

• Above the 2nd floor, a flat ceiling in concrete, insulated on the top, would be sensible in order to create a compact building envelope and to avoid suspended ceilings in high interior spaces.

• The gabled roof shape would therefore be produced by means of an added roof truss in wood.

• The balconies/loggias are designed as self-supporting steel structures (optionally also with concrete slabs on Isokorb in the 1st and 2nd floor) independently of the main building body.

• The foundation is made by strip and single foundations in coordination with the soil report.

You will find the planning documents of the already completed performance phase 2 of the project planning in the annex. The following schedule is planned:

• Start of planning: Following the award

• Completion LPH 3: February 2027

• Start of construction: Autumn 2027

• Completion: Spring 2029

The cost estimate (as of 12/2025) amounts to:

KG 300 2,510,100.00 € gross

KG 400 1,142,400.00 € gross

The subject of this tender is the structural design according to §§ 49ff. HOAI with the performance phases 1-9. An award will be made in stages. In stage 1, the performance phases 1-4 will initially be awarded, including the special service "proof of earthquake protection". In stage 2, the performance phases 5-6 will be awarded, including the special service "engineering inspection of the execution of the structure for compliance with the checked static documents" (performance phase 8). There is no legal entitlement to a full award.