If you have set times you will never meet up with the SS...he will avoid you
Have your own engineer visit your site/build at theses structural stages for (WA builds)
1. Earthworks
2.Footing/slab
3.Brickwork
4.Suspended Slab (2S)
5.Brickwork (2S)
6. Roof framing
Complement his visits with your own use checklists and take photos
Goodluck