recapitulates all building’s general data needed and their related types and unit.
Data type CodeList is used when the data can be selected from a list.
2.2.2 Building Object: Envelope, Products and Systems
This module of data contains information related to the walls, roofs and floors as
well as information related to products and energy systems installed in each
building. Data in bold in Table 3 is the minimum data set to collect to perform a
simplified LCA. It describes surface components type such as roofs, floors, walls
etc. for the building. To perform a simplified LCA, each surface component in the
building has to be further described by information on its constructive system (e.g.
for a wall type component, it can be a frame wall, a masonry wall …) and by its
main material (concrete, wood …).
To perform a detailed LCA, the quantity and service life of any construction
product and system has to be collected. Other information, such as construction
package corresponding to the product or system and a field to describe its technical
characteristics is needed. This information is necessary to link an environmental ID
to the product or system.
2.2.3 Building Object: Energy Consumption During Use
This module of data contains the information concerning the energy consumption of
the building object during its use phase. It can be connected with the information
contained within the Energy ADE. For LCA at urban scale, final energy consumption of each end use type (heating, cooling, hot water for domestic use,
lighting …) must be quantified. This information is then linked to specific data with
an environmental ID number, to evaluate the environmental impacts of energy
Table 3 Data needs for building object: envelope, systems and products
Data needs
Type and unit
Construction package
CodeList
Description field
String
Quantity
Decimal
Service life
Integer
Component type (wall, roof, floor …)
CodeList
Construction system (e.g. flat roof if the component type is roof, …)
CodeList
Main material (concrete, wood …)
CodeList
U value (for thermal boundaries)
Decimal
Nominal power (for energy systems)
Decimal
Environmental identifier
Database
Name + Id
286
A. Mailhac et al.
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