According to Fangtianxia's inquiry, generally speaking, the approval and signature of the construction drawing on its accurate and standardized quality should be carried out by the personnel or units who put forward the project task book and prepare the construction drawing. The signatory is responsible for showing that the construction drawing really meets the requirements of the project task book, and the draftsman is responsible for ensuring the quality of the drawn construction drawing. Signatories and draftsmen should be responsible for ensuring the quality and safety of construction drawings.

The signer signed the drawings on his own behalf, agreeing that this version of the construction drawing can be implemented, and the draftsman should draw according to relevant specifications and standards to ensure the safety, reliability and quality in the construction process. Both have different responsibilities, but both have responsibilities.