Deconstruction and Disassembly
Wood is also well suited to deconstruction and disassembly when a building’s original service life ends. Modern wood buildings can be designed from modular components that can be refurbished as required or remanufactured into new products. For instance, structural elements might be disassembled and set into new configurations over time or wood floors might be deconstructed and used for paneling.
The aim of DfDA is the design of buildings to facilitate future change and the eventual dismantlement (in part or whole) for recovery of systems, components, and materials. DfDA offers flexibility, convertibility, addition, and subtraction of whole-buildings.
Designing for Disassembly tips:
- Transparency – building systems that are visible and easy to identify.
- Regularity – building systems and materials that are similar throughout the building and laid out in regular, repeating patterns.
- Simplicity – building systems and interconnections that are simple to understand, with a limited number of different material types and component sizes.
- Limited number of components – it is easier to dismantle structures that are composed of a smaller number of larger timber members than a larger number of smaller timber members. Conversely, in cases where deconstruction will likely be undertaken using primarily hand-labor rather than large machinery, it may be appropriate to design with smaller, lighter members.
- Easily separable materials – materials should be easily separable into reusable components. Mechanical fasteners are preferable to adhesives. Composite materials can cause difficulty unless the composite assembly has reuse value as an assembly.