Section 9(2)(b) in Tamil Nadu Combined Development and Building Rules, 2019
(b)At each of the above stages, the owner or developer through the Registered Architect or Registered Engineer shall submit to the designated officer of the competent authority a progress certificate in Form 3 and 4 in Annexure - XIV and the structural Inspection Report in Form 9 in Annexure - XIV. This progress certificate shall be signed also by the Registered Architect or Registered Engineer on record, Construction Engineer on record and structural engineer on record. The Structural Inspection Report shall be signed by the Registered Structural Engineer on record.