| The demolition industry has been around since the | | | | market the waste materials, the management |
| dawn of the mechanical age of manufacturing. The | | | | strategies and models in the building construction |
| moment that modern architecture came about to | | | | process can be adopted into the procurement |
| address the growing need to maximize allocated land | | | | management of building demolition projects." |
| and resources, demolition engineering was right behind | | | | New technologies in the demolition industry |
| it, waiting for a signal to enter. | | | | Because of the depletion of natural resources in all |
| Demolition is the process of imploding a structure to | | | | parts of the globe, there is a need to increase the |
| clear a space for another structure to rise. Often, old | | | | effectiveness of technologies employed during |
| buildings and structures are imploded to give way to | | | | demolition. Waste management is just one faltering |
| new concessionaries or investors. In the city space, | | | | matter to deal with. The sum energy expended |
| urbanity and modernity both require demolition to | | | | during demolition is another. Juridical steps are also |
| maximize use of land and to make sure that social | | | | necessary, as expounded by Liu: |
| utility of structures are also maximized. | | | | "In particular, increasing landfill tipping fees and |
| Solid wastes during demolition | | | | compulsory high recycling rates on demolition wastes |
| According to Sung Kin Pun in an engineering journal | | | | impose strong legal incentives for the construction |
| from the University of Sidney: | | | | industry to allot attention on environmental issues |
| "Conventional mechanical building demolition produces | | | | (Ling et al., 2002; Merman et al., 2004). A growing |
| numerous solid wastes, most of which are sent to | | | | interest in deconstruction and material reuse is |
| landfill directly that severely degrade the living | | | | forming within the industry (CSC, 1994)." |
| environment. Just-in-time building demolition has been | | | | The labour intensive nature of demolition |
| developed recently with a management strategy to | | | | Demolition is labour intensive for the simple reason |
| facilitate waste reuse. Procurement management | | | | that it required selective handling of materials. The |
| plays a significant role in just-in-time building | | | | value of the waste produce after demolition should |
| demolition. In particular, the demolition tendering | | | | also be high, because demolition industries aim for |
| selection needs to consider contractors' | | | | high recyclability and reusability, in keeping with the |
| environmental performance in addition to project | | | | global agenda of sustainability. |
| costs." | | | | To address the problem of management during |
| Chunlu Liu, a co-author of the journal article A | | | | demolition, Liu expounds on a particular approach to |
| Framework for Material Management in the Building | | | | improve facilitation during demolition projects: |
| Demolition Industry clarifies the process of production | | | | "Keeping in mind that waste reuse is one of the |
| and its reverse relationship to demolition engineering: | | | | most significant objectives of a building demolition |
| "Since building demolition is the reverse process of | | | | project, Just-In-Time (JIT) demolition was developed |
| building construction, the issues involved in a | | | | as a management strategy to facilitate reuse of |
| demolition project are fundamentally identical or similar | | | | building materials (Pun & Liu, 2003). JIT |
| to those in a construction project. Yet they are | | | | philosophy is a mature management approach |
| different in context and implementation strategies, | | | | nurtured in the manufacturing industry. The main |
| particularly the project contracting and waste material | | | | concepts of JIT include reducing the inventory of |
| supply chain management (Liu et al., 2004). Although | | | | raw materials and products, and speeding up the |
| construction procurement concerns the purchase of | | | | manufacturing process by decreasing the |
| building materials while the waste material chain is to | | | | manufacturing batch size. |