Which of the following considerations are important during inspection of the work in prestressed concrete works?
1. Sheathings are threaded properly including correct threading of couplers and taping of joints
2. Only approved sheathings, HTS strands, anchor heads and wedges are to be used.
3. Splicing of reinforcement to be provided at the joints1
1, 2 and 3
2
1 and 2 only
3
1 and 3 only
4
2 and 3 only