13.00

Welcome with coffee and tea

Amsterdam-Schiphol

Part 1: PROGRESS (PROvisions for Greater REuse of Steel Structures)

13.30

Introduction and overview program

by the chairman

13.35

Overview of the EU PROGRESS project
Steel is according to our latest marketing research the preferred material for circular construction. Not only has steel been 100% recycled for at least 200 years. Entire structures or structural parts such as beams, plates and façade parts have also been reused for hundreds of years (example is The Crystal Palace). The European research project PROGRESS maps out the advantages of steel as a reusable material par excellence and investigates the possibilities for increasing this reuse potential. PROGRESS focuses on the reuse of components from existing buildings, the design for disassembly and future reuse and the interaction with other materials.

Peter Hradil (VTT, Finland)

14.00

Design of new single-storey steel buildings for reuse (English)
Circular construction also requires a different way of designing. We are used to designing on a blank paper. All shapes are permitted. From the Platonic idea, geometric drawings on virgin white paper are translated into a tangible materialization in the later design phases. When reusing the situation is reversed. The design thinking starts preferably from the materials available. Which reusable structural parts are available in what quantities? How can you come up with a new construction? In this lecture, the differences are considered between circular design from linear design. With recommendations for the main layout, the building skin and the detailing.

Ricardo Pimentel (SCI, United Kingdom)

14.30

Reuse of steel cladding systems (English)
The typical industrial building in Europe not only has a structure, but also facades, roofs and often also (intermediate) floors made of steel. Due to the higher demands on thermal insulation and the growing need for mounting speed, the sandwich panel has gained ground in recent years on the construction system of insulated liner trays with profiled sheeting. Both 'cladding' systems have been examined for reusability in PROGRESS. This results in recommendations for damage-free dismantling at the construction (in fact: demolition) site, connections (screws instead of nailers), reuse with lesser standards for aesthetics ('overcladding' or application as a carrier) or reuse in other applications.

Markus Kuhnhenne (RWTH Aachen, Germany)

15.00

Break

Part 2: Dutch regulation and case studies

15.30

The circular hall: regulations and practice
In industrial buildings too, there is growing attention for circular construction. At the heart of circularity is the life cycle analysis of the building or structure ór the components from which it is constructed. The first circle of steel construction, that of recycling at a material level, has already been closedshortly after the Industrial Revolution. Used steel is collected and as scrap it forms the base material for steel production. At PROGRESS, the main focus is on the reuse of structural steel parts such as beams, columns and plates. At the highest level of circular construction, the structure is stripped and gets a second life on the same location. Jan-Pieter den Holander clarifies these different forms of circular construction, explains how they are contained in the forthcoming regulations and shows how the environmental impact of a sustainable building can be calculated.

Jan-Pieter den Hollander (Bouwen met Staal)

16.00-17.00

Circular use of steel structure: example project Biopartner Leiden
Biopartner is a foundation housing start up companies in life sciences. The new branch office in Leiden includes flexible laboratory and office units, with supporting facilities such as a restaurant, congress center, winter garden and terrace. The circular building project is presented by the architect (Popma Ter Steege Architecten), the structural engineer (IMd) and the steel contractor (Vic Obdam) in three short lectures of 10 to 15 minutes. There will be attention for the role of the other building partners: the client (Biopartner Center), development manager (Stone 22), demolition company (Beelen Next), previous owner (Universiteit Leiden) and main contractor (De Vries en Verburg). Subsequent there is the opportunity to ask questions to the project partners.

16.00

Circular vision
It is remarkable, that for the Biopartner Center a steel structure is used, that has been 'harvested' of the demolition of Gorlaeus Laboratium a couple of honderd meters from the building site. The architect gives insights about the challenges and the opportunities for the design.

Josse Popma (Popma Ter Steege Architecten)

16.10

Donor structure
The reuse of the steel structure of the Gorlaeus Lab is a fine example of the concept ‘donor structure’ developed by IMd Raadgevende Ingenieurs. This concept was presented before at the seminar Sustainable construction with steel.

Matthij Moons (IMd Raadgevende Ingenieurs)

16.20

How to handle reuses steel in structures?
For a steel construction company it's not a daily habit to fabricate and assemble reused steel for a newly built structure. The project manager of the steel contractor tells his story. 

Rick de Keijser (Vic Obdam Staalbouw)

16.30

Forum discussion Reuse of steel
Opportunity to ask questions to the lecturers and share own experiences with the reuse of steel structures and building elements.

17.00

Drinks

18.00

End