Prediction of the Fundamental Period of Infilled RC Frame Structures Using Artificial Neural Networks

Table 2

Building parameters.

Concrete strength	25 MPa
Modulus of elasticity of concrete,	31 GPa
Steel tensile yield strength	500 MPa
Size of beams	250/600 mm
Slab thickness	150 mm
Dead loads	1.50 kN/m^2 + 0.90 kN/m^2
Live loads	3.50 kN/m^2
Number of floors	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
Storey height	3.00 m
Span length	3.00 m, 4.50 m, 6.00 m, 7.50 m
Number of spans	2, 4, 6
Masonry compressive strength,	1.5 MPa, 3.0 MPa, 4.5 MPa, 8.0 MPa, 10.0 MPa
Modulus of elasticity of masonry, Em	1.5 GPa, 3.0 GPa, 4.5 GPa, 8.0 GPa, 10.0 GPa
Thickness of infill panel,	150 mm, 250 mm
Infill wall opening percentage	0% (fully infilled), 25%, 50%, 75%, 100% (bare frame)