Safe and durable structures can only be economically designed and constructed when the technical and creative potential of all parties involved is utilized. Therefore, beyond our design and structural checking services, we also provide you with comprehensive consulting and client support for your construction project.

We can offer you competent consultation for technically challenging projects. Thanks to our structural expertise and interdisciplinary collaboration, we can show you innovative problem-solving approaches.

Our close contact with research allows us to incorporate the current state-of-the-art and to develop and implement innovative solutions for complex problems which are backed by laboratory tests.

The conceptual and detailed design of engineered structures has been one of the core competencies of Büchting + Streit AG for over 50 years, and still is.

Based on our technical competence and decades of experience, we devise innovative problem-solving approaches in the design of bridges, tunnels, and other structures.

Our strengths do not only lie in the economic and appropriate combination of construction materials and methods, but an important component is also our consistent interdisciplinary approach to soil-structure interaction.  An additional strength is our extensive experience with various construction methods and sequences. For specialized problems, we call in renowned experts from other technical areas.

For conceptual and detailed design, we can rely on our extensive experience in the application of sophisticated solutions as both designers and check engineers.

We provide all of our planning and structural engineering services in accordance with the HOAI (German Fee Regulations for Object Planners and Engineers).

A central pillar of digitalization in the construction industry is the integration of Building Information Modeling (BIM) in the planning and construction of structures. Design supported by BIM makes it possible to identify, analyse and remedy conflicts in an earlier stage, and facilitates interface coordination, especially for complex construction projects where there are a large number of parties involved in the planning and construction.

We keep up with the rapid pace of development of new technologies and approaches by constantly updating our software packages. We test new software developments with regard to their suitability for application in bridge construction and underground engineering.

In a pilot project in tunnel construction, we investigated the possibilities and advantages of the implementation of BIM to accompany and supplement the 2D design.  In the future, we plan to integrate BIM to a greater degree in the design process and expand its use into all of our business segments.

Our check engineers undertake the checking of project documentation according to the legal regulations. They work under both the public authority of the state building authorities and also under private mandate as check experts in concrete construction. In addition, they are active with the German Federal Railway Authority in concrete and composite construction and in tunnel construction as Independent Experts.

Our check engineers provide their services in the name of B+S Prüfingenieure GbR. This cooperative partnership allows numerous certifications from various fields of specialization to be centralized. This allows us to provide internally coordinated checking services for construction projects of all sizes. In addition, in the absence of one of our check engineers, we have others who are able to fill in.

Our check engineers are supported by the personnel of Büchting + Streit AG, staff who primarily work in structural engineering checking and design. Therefore, as a partner in the design and construction process, we ensure that checking/proofing tasks are approached from a practice-oriented point of view.

Within the framework of an office partnership, we collaborate with Dipl.-Ing. Jörg Lutzens, Examiner for Structural Verifications in Railway Construction, specialization in steel structures. For steel and steel-composite bridge and building projects, we also work with renowned specialists.

Structural inspection is a very challenging and responsible engineering function. In the end, deficiencies need to be not only identified, but also structurally assessed. On one hand, inaccurate evaluations can have serious consequences for the safety of a structure, but they can also lead to unnecessary restrictions and expenditures. This is why we place particular value on the qualifications, training, and experience of our structural inspectors.

We carry out regular structural inspections in accordance with DIN 1076. In addition, we often inspect structures in direct combination with strength evaluation, expert assessments of structural safety and durability, and determination of the maintenance and retrofitting requirements.

The strength evaluation of existing structures is of critical importance for the economic and sustainable management of existing infrastructure. Renewed evaluation of an existing structure can be required for a variety of reasons including the age of the existing infrastructure, new insights into the construction materials used, changes in the design concept, and for bridges in particular, the continuous increase in the transport of heavy goods. At the same time, aspects of traffic development and route specific design need to be considered in addition to the structural aspects.

We always approach the assessment and strength evaluation of existing bridges and tunnels as a design exercise and also profit in this area from our over 50 years of experience in the design of new structures. We have multi-faceted technical expertise from research and structural maintenance as well as extensive knowledge of the background of standards and guidelines. In addition, we profit from our extensive experience in the implementation of sophisticated solutions as designers and check engineers. Therefore, we can also provide optimal support for projects involving existing structures, including informed assessments, the design of temporary solutions, the determination of capacity reserves, and much more.

In our view, the formulation of independent expert assessments means, in principle, to elaborate on the circumstances and to present these precisely and in detail. This is our approach regardless of whether it is an assessment in the case of damage, or the evaluation of new construction methods or approaches for a case-specific technical approval, or for other specialized problems.

Because of his competence and expertise as Professor for for Concrete and Masonry Structures and director of the concrete and masonry division of the Material Testing Institute (MPA) at the Technical University of Munich, Univ.-Prof. Dr.-Ing. Oliver Fischer, member of our executive board, is frequently engaged as an independent expert for technical and scientific problems, new construction methods, pilot applications, damage claims, as well as technical approval procedures. In addition, we are able to utilize the MPA for experimental testing of structural members or materials.

For interdisciplinary projects, we work effectively with other renowned technical and independent experts. Therefore, we are always able to internally coordinate the comprehensive services we offer. In combination with the highly qualified and experienced personnel of Büchting + Streit AG, a complete network with extensive expertise is available to you.

Experience, technical knowledge, and above all, creativity, are three important pillars for the development of new solutions. We support the development of new construction methods and products through our innovative strength and competence, whether it be as initiator, designer, or checking engineer. In the development of innovations, we make effective use of our qualities to produce sound solutions as illustrated by the following examples:

Early Application of Segmental Construction Method:

As early as 1973 we developed a segmental bridge over the Rhine-Main-Danube-Canal as part of an alternative proposal in cooperation with Fa. Bögl. At that time, tests were carried out at the Material Testing Institute of the TU Munich to examine the epoxy resin bonded joints of the prestressed concrete bridge. The bridge stands out to this day and is still in excellent condition.

System Components for special Construction Methods:

Together with contractor Max Bögl, we also developed an innovative launching nose for incremental launched construction. The intricate, modular nature of this launching nose makes it possible to create an economic solution customized to the application conditions in various structures, with respect to the most structurally favourable nose length and width. The launching nose developed has been applied in the construction of many of the incrementally launched bridges that we designed. For example, the Wied viaduct which has a record span of 65.44 m. This modular nose structure is the general standard today, as is the incremental launch bearing with integrated lateral guidance, which was also primarily developed by us.

New Construction Methods:

The application of new construction methods in bridge construction generally requires a case-specific technical approval from the highest building authority, or in the case of the German Federal Railway Authority, an approval for operational testing. The basis for such an approval is normally an independent expert assessment of the technical solution. Our check engineers are active in this regard as partners in the development and design process, and incorporate their technical expertise in independent expert assessments. The connection with the Chair of Concrete and Masonry Structures and the Material Testing Institute at the TU Munich makes it possible for us to offer services integrated with scientific support and the testing of structural members. However, on the design and planning side, we also promote new construction methods. An example of this is the 576 m long Scherkonde Viaduct, which was the first railway bridge of this size to be constructed as a semi-integral structure. Ultimately, we were awarded the German Bridge Construction Prize in 2012 for the design of this bridge.