[Retracted] PKPM Architectural Engineering Software System Based on Architectural BIM Technology

Table 1

Heat transfer coefficient of the building envelope.

	Exterior wall, W/m^2K	Roof, W/m^2K	Exterior window, W/m^2K
Design structure (I)	0.793	0.58	2.665
Standard limit (II)	0.8	0.6	2.5
Hypothetical construction (III)	0.793	0.58	2.5