Freianlagen-Wilhelm-Hauff-Schule

REASON AND PURPOSE OF THE CONSTRUCTION MEASURE

The Wilhelm Hauff-School is located in the Eberstadt district of Darmstadt on Stresemannstraße 5. The school consists of a main building and an outbuilding, which are located in the western area of the property. The outdoor area of the complex has a very high, almost forest-like, stock of trees. At present, the structures have no structural connection.

The Wilhelm Hauff-School is a three-course primary school with a preliminary class with a total of 300 students and around 30 teachers and supervisors. At the moment, lessons are mainly held in the main building, and the administration area is also located there. The adjacent building houses the gymnasium with ancillary rooms and the support area.

The main building was built as a 2-storey structure in 1972 and expanded in the following years by a 1-storey extension in the south. It is a solid reinforced concrete frame construction with precast steel concrete elements. The building is based on isolated foundations with a surrounding frost apron. The facade is made of sandwich facade panel.

The outbuilding was built as a 2-storey structure in 1970. It is a massive reinforced concrete structure, most of which was constructed with precast reinforced concrete elements. The structure is founded on strip and individual foundations. The façade consists of floor-to-ceiling panels.

The more than 40-year period of use of the two buildings means that there is an urgent need for renovation in terms of energy and fire protection due to wear and tear and a changed legal basis for construction. From a pedagogical and building science perspective, the spatial structure inside also does not meet the requirements for modern school construction and does not meet the growing need for care services.

BUILDING CHARACTERISTICS

Building class: Building class 3, special construction

Total external dimensions: 95m x 36m

Exterior dimensions main building: 41m x 33m

Exterior dimensions Outbuildings: 34m x 23m

External dimensions connecting construction: 20m x 9m

Constructed area: 2,330 m²

Storeys: 2 storeys

Bruttogrundfläche: 4.281 m²

Building height: 7,45m outbuilding

9,15m main building and building

Measures in stock

The two existing buildings will be renovated so that they meet today's requirements in terms of energy, fire protection and building services. The aim is to connect the two individual buildings and restructure the rooms to enable optimal use adapted to the pedagogical concept. Teaching should be more closely linked to supervision. A kitchen with a dining room will be provided to cater for children who take advantage of the afternoon care services.

The non-load-bearing partition walls of the main building will be dismantled, so that the size and location of the new class and support rooms can be adapted to the current room program. In principle, cluster formation is to be implemented so that 4 clusters with 3 classrooms each (year by year) and associated care and ancillary rooms are formed. Two clusters will be implemented in the main building, one on the ground floor and one on the upper floor. Due to the higher room height than in the annex building, the canteen with dining room and adjoining auditorium will be located on the ground floor. The sanitary area on the ground floor was renovated about 6 years ago and remains untouched.

Unlike the main building, the annex mainly consists of load-bearing and stiffening inner walls, which is why care is taken here to adapt the room program to the existing structure. The existing gym stipulates that the sports area on the ground floor will be maintained. The changing rooms will be restructured in accordance with today's standards and supplemented with barrier-free changing rooms. On the ground floor, there is also the entire administration area with teacher's room, office space, meeting and ancillary rooms. There is space for 2 clusters on the upper floor, with the support room of one cluster being in the main building. The entire space requirement can be easily realized in the two buildings.

Only a technical room for ventilation needs to be created on the single-storey part of the main building. In the course of design planning, the structural engineer's calculations showed that it was not possible to load this technical room over the existing supporting structure, even in lightweight construction. This means that part of the single-storey main building has to be dismantled and is supplemented again as a 2-storey structure.

Both buildings will receive a new insulated, superior façade that meets today's energy standards and also creates a uniform overall architectural system. The roofs are also being renovated and will receive green roofs. A photovoltaic system is being built on a part of the main building.

NEW CONSTRUCTION OF THE CONNECTING BUILDING

In order to bind the two individual buildings together so that they function as a single unit both in use and architecturally, a connecting building will be built, which serves as a new main entrance. In addition to a spacious foyer, it also includes a new staircase and an elevator that ensures accessibility across all floors in both parts of the building. In addition, ramps compensate for the different heights of the buildings.

The connection of the buildings also ensures the second structural escape route required in accordance with school building guidelines, which means that the retrofitted external stairs of the existing buildings can be dispensed with.

The connecting building is built as a solid structure and founded independently of the existing structure. The canopies are designed as independent prefabricated cold constructions.

facade

As the existing façade construction cannot take loads for suspended façade structures, the new façade construction is used as superior self-supporting precast concrete elements on a concrete base consisting of

U-shaped precast concrete elements and columns in the field of connecting construction. On site, foundations for the precast concrete façade are produced. The superior façade has a distance of about 25cm to the existing façade, the gap is insulated.

The prefabricated elements are each anchored back into the existing ceiling panels. The window and door elements have an aluminum-wood construction. Shading is provided by means of external sun protection. Shading in the glass space is planned in the area of escape routes.

scope of execution

- PREPARATORY and EARTHWORKS

- dewatering work

- paved surfaces

- CONCRETE AND PRECAST WORK

- FACILITIES

- FENCE CONSTRUCTION AND METAL CONSTRUCTION WORK

- VEGETATION ENGINEERING WORK

- plant delivery

- PLANTING + CARE