How do you analyze composite steel-concrete floor systems?

Composite analysis considers: (1) Effective flange width of concrete slab acting with steel beam, (2) Transformed section properties converting concrete to equivalent steel area using modular ratio n = Es/Ec, (3) Shear connector design for full or partial composite action using slip-based models, (4) Time-dependent effects - creep reduces concrete effective modulus, shrinkage causes additional stresses. Analysis uses elastic transformed section for service loads and plastic stress distribution for ultimate strength. Partial shear connection requires modified calculations for connector capacity.