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Wooden column

component/system

Raw tree trunk

Wooden column
0.9

Wooden columns ready for assembly.

From annual forest maintenance 8 tree trunks are harvested, transported and peeled.

Inspection of the timber quality and exact measurement of dimensions and curves are performed.

The tree logs are lifted to their places.

Top and bottom of the trunks are prepared to fit the connector and to transmit structural forces properly.

View after assembly.

Summary

Wooden columns made from sustainably harvested Douglas fir during annual forest maintenance. The tree trunks are untreated and made suitable for assembly with a little preparation of bottom and top.

Details

8 tree trunks were mounted on the deck of GTB Lab in a few hours using steel connectors. The Dutch National Forest and Nature Reserve cut eight Douglas pine trees for GTB Lab as part of sustainable forest management. The use of the entire tree trunk presented the consortium with a rare challenge. Engineers and structural engineers are used to working with straight parts whose wood quality can be easily assessed. Now it had to process eight unique products without a single straight edge.

Design

4D Architects

Manufacturer

Dutch Nature and Forest Reserve (Staatsbosbeheer), De Groot Vroomshoop, Rusman

Manufacturing location

Apeldoorn, Nederland

Industry consortium

Dimensions

Length:

Width:

Height (or depth):

Thickness:

Area:

Volume:

9 280 mm

550 mm (average diameter)

Hazardous materials

None

History

2018 - harvest in forest nearby Apeldoorn NL
2018 - arrival at storage site in Heerlen
2019 - peeling of bark
2021 - wood quality inspection and dimensions measurement
2022 - assembly at GTB Lab

Circularity data

Reversible BIM: the 3D color-coded model visualizes the reuse potential per element.
RP Product legend.png

Reversible BIM: the 3D color-coded model visualizes the reuse potential per element.

Embodied mass:

Embodied carbon:

1,95 ton

2,5 ton CO2

Reuse Potential:

Recovery option

0.9

Direct reuse

Reused mass:

Reused carbon:

1,59 ton

2,0 ton CO2

No. of elements:

No. of disassembly steps:

8

4

Remaining Technical Life Cycle:

70 year

gtb lab phase 1 - circularity profile tonnage.jpg

gtb lab phase 1 - circularity profile tonnage.jpg

gtb lab phase 1 - tonnage recovery option.jpg
gtb lab phase 1 - carbon recovery option.jpg
gtb lab phase 1 - tonnage avoided waste.jpg
gtb lab phase 1 - carbon avoided waste.jpg
gtb lab phase 1 - tonnage material distr.jpg
gtb lab phase 1 - carbon material distr.jpg
gtb lab phase 1 - tonnage overview materials.jpg
gtb lab phase 1 - carbon overview materials.jpg

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Wooden column

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