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EXPERIENCE,
PROFESSIONAL SKILL AND KNOW-HOW

First-hand
expertise.

Harrer Engineering

Publications

COMPANY BROCHURE OF HARRER INGENIEURE

The company brochure of Harrer Ingenieure explains the origin of our "first-hand competence:" It outlines the company's activities, presents the people behind it, and shows project examples.

2019

Download the company brochure (PDF file)

SAMPLE DRAWINGS OF TIMBER CONSTRUCTIONS

Musterzeichnungen Holzbau

Planning information on structural timber preservation and the dewatering of bridge constructions

November 2019

Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)

Download the sample drawings (PDF file)

WOOD-CONCRETE COMPOSITE SYSTEMS – A SUCCESS STORY?

On May 9, 2019, Dipl.-Ing. Matthias Gerold (Harrer Ingenieure) gave a lecture in the "Structural Engineering" colloquium at the Karlsruhe Institute for Technology (KIT), dealing with the topic: "Wood-Concrete Composite Systems – A Success Story? Overview of Future Project Scoping. What Does the Technical Specification (TS) Regulate?"

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TIMBER SUPPORT STRUCTURES ACCORDING TO DIN EN 1995 (EUROCODE 5)

In April 2019, the German Quality Association for Prefabricated Houses (Gütegemeinschaft Deutscher Fertigbau e. V., GDF) offered a training event for Quality Officers in Ostfildern. In this context, Dipl.-Ing. (FH) Michael Bendig (Harrer Ingenieure) lectured on the topic of support structures according to DIN EN 1995 (Eurocode 5).

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APPLICATION EXAMPLES OF (HARMONISED) TIMBER CONSTRUCTION PRODUCTS

From mid-October to early December 2018, the Federal Association of Checking Engineers for Construction Technology (Bundesvereinigung der Prüfingenieure für Bautechnik e. V., BVPI) organised a training event on the Construction Products Regulation (CPR). Participants were provided with an overview of the current CPR and with suggestions for dealing with it, based on concrete examples in solid, steel, and timber construction as well as fire protection. 

In this context, Dipl.-Ing. held a lecture titled "Application Examples of (Harmonised) Construction Products for Timber Structures" in Hamburg on December 3, 2018.

Download the contribution (PDF file) 

Download the programme (PDF file)

SELECTED HBV PROJECTS IN THE BUILDING AND BRIDGE CONSTRUCTION SECTOR IN GERMANY

The 50th training event by S-win in Weinfelden on October 23 and 24, 2018, dealt with the topic of composite timber structures. Here, Dipl.-Ing. Matthias Gerold (Harrer Ingenieure) held the lecture: "Selected HBV Projects in Building and Bridge Construction in Germany."

Download the contribution (PDF file)

Engineering Structures

Engineering Strucutres

In September 2018, the journal Engineering Structures published an article by, among others, Dipl.-Ing. Marion Kleiber (Harrer Ingenieure). The contribution proposes a reorganisation for the chapter on connections of Eurocode 5.

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CASE STUDY BECHTLE AND FUJITSU

In spring 2017, the Stuttgart-based IT system house Bechtle and the Japanese technology group Fujitsu implemented a server and storage architecture based on PRIMEFLEX for Microsoft Storage Spaces Direct at Harrer Ingenieure.

Download the publication Fujitsu (PDF file) 

Download the publication Bechtle (PDF file)

COMMEMORATIVE PUBLICATION AND LECTURE AT THE SYMPOSIUM FOR PROF. DR.-ING. ULRIKE KUHLMANN

For the 60th birthday of Prof. Dr.-Ing. Ulrike Kuhlmann (office partnership Kuhlmann Gerold Eisele, Ostfildern) in 2017, the Institute for Construction and Design of the University of Stuttgart created a commemorative publication on the topic of steel, timber, and composite constructions, which was published by the publishing house Ernst & Sohn.

Additionally, at the official celebration, Dipl.-Ing. Matthias Gerold (Harrer Ingenieure) and Prof. Dr.-Ing. habil. Jörg Schänzlin (University of Applied Sciences Biberach) gave a presentation on the question: "Wood-Concrete Composite Systems – A Success Story?"

Download an extract of the commemorative publication (PDF file) 

Download the presentation (PDF file)

TREETOP PATH IN THE PANABORA FOREST EXPERIENCE PARK

Sonderdruck der Fachzeitschrift Bauen mit Holz Naturnah mit Weitblick

In November 2015, the journal Bauen mit Holz published the special edition Naturnah mit Weitblick by Dipl.-Ing. Marion Kleiber, Dipl.-Ing. (FH) Michael Bendig, and Dipl.-Ing. Matthias Gerold (all Harrer Ingenieure). The authors focused on the construction of the wooden treetop path with a lookout tower in the forest experience park "Panabora" near Cologne, which had confronted them with special demands regarding wood and fire protection.

Download the contribution (PDF file)

SPECIAL EDITION TREETOP PATH

Sonderausgabe Baumwipfelpfad

Schaffitzel Aktuell

February 2016

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METROPOL PARASOL, SEVILLE

Metropol Parasol Sevilla

From October 1 to 2, 2015, the European Cooperation in Science and Technology (COST) organised a workshop in Pamplona, Spain. In the context of COST Action FP1402, Dipl.-Ing. Matthias Gerold (Harrer Ingenieure) gave a lecture titled "Metropol Parasol in the Plaza de la Encarnación, Seville" on the topic of "Basis of Structural Timber Design – from research to standards."

Download the contribution (PDF file)

SILAGE CLAMPS

Gärfutter-Fahrsilos

Peculiarities involved in dimensioning

July 31, 2014

In-house lecture
Dipl.-Ing. Matthias Gerold, Dipl.-Ing. Julia Volz (both Harrer Ingenieure) 

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DAMAGE ANALYSIS OF THE UNDERGROUND PARKING OF THE RENAISSANCE KARLSRUHE HOTEL

Tiefgarage Renaissance Hotel Karlsruhe

Example of the use of the Power Plant Designation System (Kraftwerk-Kennzeichensystems, KKS)

July 31, 2014 

In-house lecture
Dipl.-Ing. (FH) Andreas Föhl, Dipl.-Ing. Matthias Gerold (both Harrer Ingenieure) 

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Scheibengipfeltunnel Reutlingen

Presentation of the project's development

July 31, 2014

In-house lecture
Dipl.-Ing. (FH) Jan Reichenbach, Dipl.-Ing. Timo Krämer, Dipl.-Ing. Matthias Gerold (all Harrer Ingenieure)

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NAIL PLATE STRUCTURES

Checking the reinforcement of nail plate binders

February 26, 2014

In-house lecture
Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)

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NAIL PLATE STRUCTURES

Nagelplattenkonstruktionen

22. Engineering Seminar (Bautechnisches Seminar) in Ratingen, North Rhine-Westphalia Calculation, construction, and execution according to DIN EN 1995-1-1:2013-08 using state-of-the-art software 

November 6, 2013

Lecture by Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)

Download the contribution (PDF file)

CONSTRUCTION MATERIALS IN THE EVENT OF FIRE

Baustoffe im Brandfall

Conference of the Network of Female Firefighters (Netzwerk Feuerwehrfrauen), Landesfeuerwehrschule Baden-Württemberg, Bruchsal

November 6, 2013

Lecture by Dipl.-Ing. (FH) Frank Kümmerle (Harrer Ingenieure)

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RECOMMENDED READING: NEW EDITION OF THE BOOK HOLZBRÜCKEN AM WEG BY DIPL.-ING. MATTHIAS GEROLD

Holzbrücken am Weg

Holzbrücken am Weg (2001) presents interesting civil engineering timber constructions in Germany and Switzerland. The most beautiful ones are located in the alpine region, for historical reasons. In order to illustrate the origins of newer constructions, the general introduction is followed by a separate chapter providing a historical review.

The new edition (2007) describes more than 100 further bridge structures, including some in the Tauern region and at the Styrian wooden route in Austria as well as some in Italy, France, China, and the USA. Additional road bridges in Germany and in the newly featured Alpine country complete the picture. Thanks to the map and the given directions, the bridges are easy to find. 

The constructions are looked at through the eyes of an engineer – not those of an art expert. The descriptions thus tend to focus on certain aspects, mentioning literature references for those who desire a deeper understanding. Nevertheless, references to art history and the history of civil engineering in view of bridge constructions have been added. 

The section on structural timber preservation has also been significantly expanded, in this taking into account the sample drawings for timber bridges developed by Harrer Ingenieure. 

May this book arouse the interest of its readers to get to know and better understand the technology of construction. 

Review 

Book review e.g. by Susanne Jacob-Freitag in the specialist journal Greenbuilding 

Purchase

If you would like to order Holzbrücken am Weg, please contact our employee Ms Isabella Schulz (i.schulz@harrer-ing.net, telephone +49 (0) 721 1819-201).

LONG-SPAN SUPPORT STRUCTURES FROM A CHECKING ENGINEER’S POINT OF VIEW

Weitgespannte Tragwerke aus Sicht des Prüfingenieurs

September 29, 2005

Lecture by Dipl.-Ing. Matthias Gerold (Harrer Ingenieure), on the occasion of a specialist excursion

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BUILDING DYNAMICS IN DAILY PRACTICE

Baudynamik in der Alltagspraxis

12. Solid Construction Seminar (Massivbauseminar) 2004, Building Academy (Bauakademie) Biberach

Building dynamics in daily practice, basics of building dynamics, exemplified developments, execution

The trend towards ever lighter and leaner buildings entails constructions which are not only both aesthetically beautiful and economical but also increasingly susceptible to dynamic excitation. At the start of this contribution, some basics of building dynamics will be outlined. Subsequently, the authors exemplify harmonious as well as impulse-like influences and provide instructions for the calculation, execution, and avoidance of resonance.

Lecture by Dipl.-Ing. Matthias Gerold, Prof. Dr.-Ing. Lothar Stempniewski (both Harrer Ingenieure)

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BUILDINGS IN THE WINDTHROW AREA OF TREES

Gebäude im Windwurfbereich von Bäumen

When calculating building structures, the "windthrow" load case had formerly not been considered, as the relevant regulations did not mention it. In recent years, however, new buildings have increasingly been built in the immediate vicinity of old trees. Against this backdrop, the contribution at hand makes a proposal for how to consider the load case in the context of structural proofs.

June 1999

Authors:

  • Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)
  • Dr.-Ing. Franz-Hermann Schlüter (partner in the engineering office Prof. Eibl + partner GbR Karlsruhe and Dresden)

Download the contribution (PDF file)

COMPANY BROCHURE: PARTICULARITIES OF THE CONSTRUCTION OF UNDERPASSING TRAFFIC ROUTES

Firmenbroschüre Besonderheiten beim Bau von unterführten Verkehrswegen

Besides bridge constructions, underpassing traffic routes represent classic engineering services. Due to built-up areas, it becomes increasingly necessary to construct traffic routes as underpasses while maintaining the entire existing traffic. This requires special methods for constructing the support structures, with constricted space conditions often involving complex construction measures. Additionally, in the case of high groundwater levels which cannot be lowered, waterproof constructions are needed.

By means of examples, this brochure looks at some of the used construction methods, the particularities of concrete technology as well as of the stresses on buildings, and geotechnical factors. The presented experiences have been gathered through projects related to underpassed buildings and cover the design phase, the approval and implementation planning as well as the structural tests.

June 1999

Authors (all Harrer Ingenieure):

  • Dipl.-Ing. Eberhard Adam
  • Dipl.-Ing. Kurt Bahm
  • Dipl.-Ing. Matthias  Gerold
  • Dipl.-Ing. Andreas Hadisaputro

Download the brochure (PDF file)

BLOCK-GLUED TIMBER BRIDGES

Blockverleimte Holzbrücken

As glued wood structures developed, the construction of wooden bridges experienced a boost in Germany. This contribution presents some local bridge constructions with glued solid wood profiles and shows according techniques as well as the measured moisture properties.

2003

A contribution (in English) by Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)

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Bemessung von Holzbauwerken nach Eurocode 5

Bemessung von Holzbauwerken nach Eurocode 5

With 95 images, 67 tables, and 82 literature citations, 1996 edition

Eurocode (EC) 5 is the standard for support structures in timber construction engineering. It treats the design, calculation, and (cold) measuring of timber support structures. Since 1994, the standard is available in three languages – in Germany as DIN V ENV 1995 Teil 1.1, edition of June 1994. This book reports on the content and the application of EC 5. By means of practical examples, it illustrates the measuring of timber engineering constructions according to DIN V ENV 1995-1-1. The publication also provides readers with calculation aids and details the main differences between the design concepts, in particular that of DIN.  

Authors: 

  • Dipl.-Ing. Matthias Gerold (Harrer Ingenieure)
  • Prof. Dr.-Ing. Heinz Brüninghoff
  • Dipl.-Ing. Markus Derix
  • Dipl.-Ing. Fritz Kunz
  • Dipl.-Ing. Jürgen Kürth
  • Dipl.-Ing. Tobias Wiegand 

Available via bookstores and e.g. Amazon (ISBN 3-8169-1310-5)

TIMBER PRESERVATION – STATE OF STANDARDISATION AND APPROACHES

19. International Timber Construction Forum (Internationales Holzbau-Forum)

2013

Presentation by Dipl.-Ing. Matthias Gerold (Harrer Ingenieure) 

Download the contribution (PDF file)

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