Refurbishment of the Walhalla, Wiesbaden, Early safety and conservation measures, utilisation and area concept in variants, structural engineering services / LPH 1 - 9

The building complex of the Walhalla variety theatre, which opened in 1897, is centrally located in Wiesbaden on a plot of around 2,000 square metres.

The property was privately owned for a long time and was bought in 2007 by the municipal company WVV Wiesbaden Holding GmbH. Large parts of the complex have been unused since the 1990s, and in 2017 the areas used by the Kulturinitiative Walhalla e.V. had to be closed for fire protection reasons. Due to the long vacancy, the listed building with a total floor area of around 5,500 sqm GFA has a considerable renovation backlog.

Due to the cultural, social and urban significance of the Walhalla, the state capital Wiesbaden has spoken out in favour of a sustainable renovation and subsequent cultural use of the building ensemble. A concept study was developed and the total costs for the renovation, partial demolition and new construction were determined, which amount to around 50 million euros. The (urban planning) concept study does not yet include a concrete utilisation concept.

With the decision in principle of the city council of July 2022, planning funds were released for the development of an approvable plan, and SEG was commissioned with the planning and control of the overall measure, initially for service phases 1-4 on the basis of the concept study submitted. In a first step, with the participation of a specially established steering group, the concrete spatial and utilisation concept is to be developed in close cooperation with the monument authorities and in variants. On the basis of one of these variants, the object planning for the service phases 1-9 according to HOAI for the renovation, possibly (partial) demolition and new construction is to be developed. Parallel to the planning, urgently needed early conservation and construction measures must be examined and carried out.

Funding from various programmes has been applied for for the project, some of which are to be used at short notice.

task description

Module 1: Early security and conservation measures

Module 2: Usage and space concept in variants

Module 3: Structural design for the renovation and, if necessary, partial demolition and extension of Walhalla

On the basis of the available investigations and studies with the urban planning, structural, monument preservation, functional and economic requirements, the revitalization of the Walhalla cultural site (if necessary, the revitalization of the Walhalla cultural site) is to be carried out as part of the redevelopment planning. Partial demolition and new construction) to prepare the structural design.

The task for structural design includes the three service modules described below. The first step is to retrieve blocks 1.1 and 2.

For an early basic and inventory determination, partial services of service phases 1 and 2 from modules 1.2 and 3 should also be called up at an early stage if required. This is intended to enable the contractor to deal intensively with the conditions of the building as well as the existing planning principles in order to be able to advise on the necessary amount of knowledge in modules 1 and 2.

Module 1: Early security and conservation measures

In order to prevent further deterioration of the building fabric, parallel to the development of the utilisation concept (module 2), it is to be examined which components can be preserved and how, and which structural safety and restoration measures can be carried out earlier (module 1.1). These measures are mainly to be identified in the area of the core building of the Walhalla, which may not be changed in its design.

The determination and subsequent planning and implementation of the measures will be carried out by the architectural and specialist planning offices still to be commissioned in close coordination with the monument authorities, a restoration specialist planning, as well as the owner and the AG and, if necessary, other bodies to be involved.

The subject matter of the contract for module 1 are:

1.1 Consulting services (for structural engineering) in the context of the identification and examination of the feasibility of the necessary early measures. Billing is based on proof.

1.2 the planning and implementation of these anticipated measures following the identification and feasibility check.

The subject matter of the contract for the planning and implementation of the measures is the basic services of service phases 1 to 6 in accordance with §49ff. together with Annex 14 HOAI 2021. The calculation basis for the offer is the forecast construction costs of KG 300-400 in the amount of approx. EUR 1.65 million net.

There is a step-by-step retrieval of the services (entire service phases or individual partial services). There is no entitlement to the retrieval of individual services or all service levels. Billing is based on proof.

Module 2: Usage and space concept in variants

There is no concrete spatial and utilisation concept for the revitalisation of the Walhalla. This is to be developed by the architectural firm in dialogue with the steering group set up by the magistrate, taking into account the interests of the future users and the owner. Depending on specific usage and space requirements, the architectural firm is to develop space concepts in variants as part of a feasibility study. For each of the variants, a rough cost estimate is to be developed for the purpose of economic comparability.

The core building of the Walhalla from 1897, which is protected as an individual cultural monument, with the distinctive ballroom, the hall of mirrors and the foyer, is to be preserved in its current form for events. Depending on the usage concept and in coordination with the monument authority, the later extensions to the core building are up for grabs for (partial) demolition, if necessary. In order to meet the requirements for the space requirements of a modern and flexibly usable cultural and event venue with gastronomy, as well as the reorganization of the situa-

In Hochstättenstraße, new additions or extensions, including the current open space within building block 2, are to be examined by the architectural firm still to be commissioned.

An examination and deviation from the concept study in the course of the development of the utilization concept is not excluded.

The development is carried out in dialogue with the bodies to be involved.

The scope of services for structural design includes consulting services for the variants to be developed by the architectural office. The remuneration for these consulting services in module 2 is based on proof.

Module 3: Structural design as part of the renovation and, if necessary, partial demolition and extension of Walhalla

On the basis of the utilisation and space concept developed in module 2 for the refurbishment with any additional measures to be carried out. Partial demolition and extension, the structural design is to be drawn up.

The planning is carried out in close coordination with the monument authorities, the architectural and specialist planning offices still to be commissioned, the restoration planning still to be commissioned, as well as the owner and the AG as well as any other bodies to be involved. The subject matter of the contract for the planning and implementation of the measures are the basic services of service phases 1 to 6 in accordance with §49ff. together with Annex 14 HOAI 2021, as well as special services according to the partial service table. The calculation basis for the offer is the projected construction costs of KG 300-400 in the amount of approx. 7.35 million euros net.

The special services (according to the appendix) are to be offered as a lump sum - divided according to service phases.

There is a step-by-step retrieval of the services (entire service phases or individual partial services). Initially, work phases 1 and 2 will be commissioned by SEG. In the event that the concept to be developed within the framework of module 2 deviates from the present concept study, a new committee resolution must be obtained after work phase 2. Subject to this committee decision, service phases 3 to 4 can be called up. After completion of work phase 3, including cost calculation and implementation of plausibility check and construction inspection, the call for further work phases 5 to 9 can take place in further processing stages after a new committee decision.

The assignment of the respective further processing stages from service phase 3 onwards is therefore subject to committee approval and can only be made with the consent of the necessary committee resolutions to be applied for by the AG. There is no entitlement to the retrieval of individual services or all service levels.

Scheduling

Start of processing module 1.1 + 2 immediately after completion of the procedure

Start of module 1.2 after identification of the early security measures

Module 3 after completion Module 2

Start of construction in the second half of 2025

Completion by the end of 2027

(For a detailed description, see project and task description)