Initial Parameters Affecting the Multilayer Doubly Curved Concrete Shell Roof

Table 1

Geometric and material parameters of concrete shell.

	Concrete grade	Thickness (mm)	Modulus of elasticity (kN/m^2)	Concrete type
Layer 1 (below)	B30	20	3.25 × 10^7	Steel fibres, 2% (volume)
Layer 2 (above)	B20	30	2.75 × 10^7	Normal