*4.1. Overview*

The architectural overview of the evaluation subject is summarized in Table 3. In order to analyze the CO2 emission characteristics during the apartment housing construction process, 1004 household, reinforced concrete apartment houses (combined area of 208,393 m2) were selected in Seoul, Korea.

**Table 3.** Architectural Overview.


This study targeted the 13 types of construction work such as, Reinforced concrete works, Steel works, Carpenters works, Waterproofing works, Tile works, Glass works Painter's works, Form works, Plaster works, Interior finishing works, General works, Joiner's works and Masonry works. Then, the CO2 emissions characteristics for each work type and the main material-types were deduced. In order to compare analysis results, the emission amount was calculated by dividing it by the total area.

#### *4.2. Analysis of CO2 Emission Characteristics by Work Type*
