Strength and Cost Analysis of New Steel Sets as Roadway Support Project in Coal Mines

Table 1

Parameters of U36 and I12.6 [29].

Pattern	Unit mass, m (kg/m)	Sectional area, A (cm^2)	Section thickness at neutral axis, d (cm)	Moment of inertia, I (cm^4)	Elastic modulus, E (GPa)	Section modulus, W (cm^3)	Static moment, S (cm^3)
U36	35.87	45.69	1.56	928.65	200	141.22	330.05
I12.6	14.223	18.118	0.5	488	200	77.5	44.985