Manufacture of building products. For each building material involved in the construction, all goods and services provided from beginning to end are considered. Machine manufacture and territorial infrastructure processes have also been taken into account.
•Assembly and construction. This covers the processes that inte-grate all products and services on site in each of the dwellingsstudied. The transportation of building materials from factory to site, and the placement of building products are also evaluated.
•Maintenance and repair. This includes all repair operations and maintenance of building components, also taking into account the replacement of those materials that are less durable.
•Dismantling and demolition. The study evaluates all processes at the end of the life of the building that involve the dismantling and demolition of the dwelling: demolition, removal of building elements and transportation of demolition materials for recycling or disposal.