Is CalcSteel compliant with IS 800 (Indian standard)?

Yes. CalcSteel implements IS 800:2007 (General Construction in Steel) verification for tension, compression, flexure, shear, combined actions and deflection. The database includes all ISMB, ISMC, ISA and ISLB profiles from IS 808 (Indian Standard Hot Rolled Steel Beam, Column, Channel and Angle Sections). When you select IS 800 in the analysis settings, the software applies Indian-specific partial safety factors (γm0 = 1.10, γm1 = 1.10), yield strength defaults (Fe410 at 250 MPa), and the effective length rules from IS 800 Table 11. The generated PDF report references IS 800 clause numbers for each check. CalcSteel is used by Indian engineers for design of warehouses, industrial sheds, mezzanines and light frames.