Demolition or retention of buildings: drivers at the masterplan scale

Current adaptation theory tends to consider individual buildings or the city level, which cannot address decisions related to masterplan developments on large brownfield sites. This paper investigates the drivers for building demolition or retention and adaptation decisions at the masterplan scale. Expert interviews and three case studies are...

The effects of physical restructuring on the socioeconomic status of neighbourhoods: Selective migration and upgrading

In the last few decades, many governments have implemented urban restructuring programmes with the main goal of combating a variety of socioeconomic problems in deprived neighbourhoods. The main instrument of restructuring has been housing diversification and tenure mixing. The demolition of low-quality (social) housing and the construction of...

BIM for pre-demolition and refurbishment inventories and waste information management

The presented BIM-SD tool is a software tool supporting the user in the pre-demolition audit and C&DW assessment. Its main objective is to support the collection and management of information on the existing elements and materials in a building to be demolished, the decision making around the optimal demolition sequence and the management of the...

Construction and demolition waste management in India: A case study of Ahmedabad city

Ahmedabad is the largest city in the state of Gujarat and the 5th largest in India in terms of population. It is one of the most important economic and industrial hubs in India. Additionally it is one of the fastest growing cities in India, leading to large infrastructural projects including metro rail and river front. Construction is also...

Demolition and recycling of carbon reinforced concrete

Carbon reinforced concrete is an artificially produced composite construction material consisting of two components: concrete and continuous carbon filaments formed as roving fabric or bars. The research project C³-V1.5 “Demolition, Dismantling and Recycling” aims to answer the key questions regarding the LCA. Under the leadership of the ...

Semi-selective demolition: Current demolition practices in Flanders

Construction and demolition waste (C&DW) represents one of the EU's largest waste streams. Eurostat (2010) estimates a C&DW generation of 970 Mton/year in the EU-27 (±2 ton/inhabitant), with an average recovery rate of 47% [1]. To reach a higher recycling rate, higher-purity material streams from C&D works are required. These can be obtained by...

The Effects of Physical Restructuring on the Socioeconomic Status of Neighborhoods: Selective Migration and Upgrading

In the last few decades, urban restructuring programs have been implemented in many Western European cities with the main goal of combating a variety of socioeconomic problems in deprived neighborhoods. The main instrument of restructuring has been housing diversification and tenure mixing. The demolition of low-quality (social) housing and the...

Neoliberalization and the Changing Roles of Stakeholders in State-Led Shantytown Redevelopment in Shenyang City, China

Neoliberal politics in China have changed the roles of, and the interrelationships between, the state, the market and society in urban restructuring. Since 2008, the central state has initiated the Shantytown Redevelopment Projects (SRPs) to improve the living conditions of low-income residents. Between 2008 and 2012, about 12.6 million...

The lost identity of Izmir

Port cities are distinguished from other cities by their waterfronts, which were shaped by economic and cultural transactions between each city and its networks. Trade-related activities prepared the conditions for accelerated globalisation with economic changes. The Ottoman Empire supported commerce and production in Western Anatolia after 16th...

Obsolescence, conceptual model and proposal for case studies

What is obsolescence? There is a general understanding that buildings, similar to machinery, should be demolished and replaced when they become obsolete. The truth of this assertion is found problematic, as obsolescence is not clearly understood in conceptual or practical terms. Understanding obsolescence is important. It presents a serious...

Understanding obsolescence: A conceptual model for buildings

What is obsolescence? Numerous older buildings have been demolished due to being labelled as obsolete. There is a general understanding that buildings, similar to machinery and durable consumer goods, should be demolished and replaced when they become obsolete. The truth of this assertion is examined and found to be problematic, as obsolescence...

Demolition in Europe: Volume, motives and research approach

What determines the life span of dwellings? Much is known about the initial phase of buildings. The vast majority of scientific knowledge is concentrated on the building initiative, the programming, design and in particular the construction. Knowledge about the utilization phase, including management, transformation and redesign is growing. But...

Upgrade or replace?: The effect of the EPBD on the choice between improvement or replacement

What is better: improvement or replacement by new construction? The choice between life cycle extension and replacement of existing buildings is at itself a vital but very difficult decision, involving a wide range of different aspects and affecting several contrary and often conflicting interests. The emerging ecological awareness of the...

Life cycle of dwellings: A conceptual model based on Dutch practice

Construction and demolition waste: General process aspects