Before pouring concrete or other the structural work necessary or system engineering.
The Contractor shall notify in advance to the taskmaster for less than 24 hours to verify accuracy prior to operation. When informed the pouring concrete or other work mentioned above.
If the taskmaster didn’t show up on the appointment schedule, to perform concrete working is possible.
And if the taskmaster disapproved of pouring concrete, to extend the period of construction according to the days of the delay after notify.