The height between two floors is 3.00 m and riser is 150 mm. Assuming two flights between the floors, the number of treads will be
a) 18
b) 19
c) 20
d) 21
The height between two floors is 3.00 m and riser is 150 mm. Assuming two flights between the floors, the number of treads will be
a) 18
b) 19
c) 20
d) 21
