According to specifications, embedded parts must be accepted after installation and before concrete pouring. The time requirements for each stage are as follows:
Construction Self-Inspection: The construction unit must complete a self-inspection within 24 hours after installation. After passing the self-inspection, a self-inspection record must be filled out and submitted to the supervision unit.
Supervision Acceptance: After receiving the self-inspection report, the supervision unit must complete parallel inspection and verification within 48 hours and issue an acceptance opinion.
Concealed Work Acceptance: As a typical concealed project, the final joint acceptance must be completed before the next construction process (concrete pouring). Concrete pouring can only proceed after acceptance is passed. Covering is strictly prohibited before acceptance.