The original 1926 engineer's drawing of the steps!

The flights are labeled A-I to assist
in identifying the artists' drawing
of elements & tiles.

By flights of steps:
A   Top 10 steps
B   2nd 10 steps
C   3rd 16 steps
D   4th 10 steps
E   5th 10 steps

Landing and turn

F   6th 23 steps
G   7th 23 steps
H   8th 23 steps
I   Bottom 23 steps