What are the permissible stresses in Tension Steel and Concrete as per BS8110 while checking a section for crack widths?
Permissible stress in Steel and concrete is defined as following.
Stress in steel is limited to 0.8 x fy (BS8007:1987 Appendix B2 and Cl. 3.8.3, BS8110-2:1985)
Stress in concrete is limited to 0.45 x fcu (BS8007:1987 Appendix B2)