If You measure a staircase

STAIR24 recommend the following reminder:

1. I involved professional carpenter to measure my stair
2. Stair hole walls are ready, levelled, the corners all 90 degree
3. The base floor of stair hole is ready, levelled
4. I know, what will be the final hight of the finished floor
5. I know the location of construction beams inside the wall to use them for stair connectors
6. I know the exact location of different cables, pipes what are in the stair hole walls and floor
7. The stair hole is free to enter for measuring
8. I ensure the safety in measuring process