Demolition

Demolition

Planning and execution of deconstruction and demolition works foresee inventory and screening of recycling of existing components and materials, e.g. through carrying out a pre-demolition audit. Tendering and contracting for selective demolition works should include planning and logistics for circular site preparation and selective demolition, with soft stripping and on-site separation of material types. Value and utility should be maximised for all recoverable building components and materials according to the highest level of the waste hierarchy, while adhering to protocols for health and safety monitoring on-site. Once construction materials are released from their use state in buildings or infrastructure, they should be handled and managed in a way that preserves their value and utility, while taking time and cost management into account. Hazardous waste is to be handled and treated responsibly.

CityLoops instruments

3D GIS visualisation

This tool visualises all city structures, materials, emissions and flows such as energy use in real time. It integrates qualitative data such as SDG indicators as well. The purpose of the tool is (1) to allow for future scenario planning by considering the surrounding context and simulated impacts, and (2) to present sophisticated data in a visual way for involvement of citizens and non-specialists in city-planning through Bodø’s CityLab...read more

Demonstrated in:

3D modelling to track onsite CDW flows

This tool uses a camera drone with a photogrammetry software to model and to monitor demolition sites by image-based scanning. The tool produces point clouds to be used for 3D visualizations and 3D calculations of buildings and material quantities, as well maps and other GIS data about the site. A similar methodology is used e.g. in the extractive and AEC industries. Using progressive scans of the same site, the movement of different materials can be tracked...read more

Demonstrated in:

Lifecycle CO2 calculators for concrete, soil and mixed CDW

Circular economy approaches focus on maintaining the value of materials for as long as possible. A circular economy seeks to keep materials in circulation, minimising the concept of waste from the system and the need for virgin material extraction from primary sources. In a completely circular economy, waste production should align completely with the input of new products. If the built environment is thought about in this way, as a system...read more

Pre-demolition screening procedure

This procedure explains how a pre-demolition inventory and material audit can be conducted to identify building components and materials with reuse or recycling potential. The screening procedure details how to identify and evaluate the residual value of a component or material. Identification of materials (as containing harmful substances, or as having residual value and potential for other uses) is the key first step...read more

Selective demolition procedure

This procedure explains how a selective demolition can be conducted to select and preserve value of building components and materials with reuse or recycling potential, following a series of chronological steps to dismount components or materials without damaging them. It can be applied when planning demolition projects, with sufficient time and coordination among actors, such that selective demolition...read more