Construction Method and Process Optimization of Prestress Reverse Tensioning for Large-Span Bidirectional Suspension Steel Roof Structures

Table 4

Physical and mechanical parameters of the three-in-one column.

Thickness (t) (m)	Inner diameter (d) (m)	Area (A) (m^2)	Yield strength (fy) (mPa)	Elastic modulus (E) (mPa)	Moment of inertia (I) (m^4)
0.015	0.42	0.082	235	2.06 × 10^5	0.665