Mathematical Model of Hybrid Precast Gravity Frames for Smart Construction and Engineering

Table 5

Evaluation of structural systems.

Building component	System	Gross area	Building material		CO2 emission		Energy consumption		Cr^6+ emission
Concrete; (H.P.F. = 35 MPa; B.W. = 25 MPa)	H.P.F.	9236 m^2	0.38 m^3/m^2	69.1%; (−30.9%)	136.2 kg-CO2/m^2	77.5%; (−22.5%)	1006.0 MJ/m^2	78.6%; (−21.4%)	1106.2 mg/m^2	68.9%; (−31.1%)
	B.W.	6513 m^2	0.55 m^3/m^2	100.0%	175.8 kg-CO2/m^2	100.0%	1279.6 MJ/m^2	100.0%	1606.1 mg/m^2	100%
Reinforcements	H.P.F.	9236 m^2	0.53 kN/m^2	72.6%; (−27.4%)	144.5 kg-CO2/m^2	72.4%; (−27.6%)	1931.4 MJ/m^2	71.3%; (−28.7%)	—	—
	B.W.	6513 m^2	0.73 kN/m^2	100.0%	199.6 kg-CO2/m^2	100.0%	2710.7 MJ/m^2	100.0%	—	—
Steel section	H.P.F.	9236 m^2	0.07 kN/m^2	100.0%	20.6 kg-CO2/m^2	100.0%	272.1 MJ/m^2	100.0%	—	—
	B.W.	6513 m^2	— kN/m^2	—%	— kg-CO2/m^2	—%	— MJ/m^2	—%	—	—

H.P.F.: hybrid precast frames; B.W.: bearing wall.