Basement staircase - How big will it be?

[tpsoft]

Hi

We are planning to build a basement entrance with stairs on the outside of our house, and the building committee wanted a small sketch to assess whether it significantly affects the appearance of the house. Sketching isn't too hard, but how big will the stairs be approximately, especially the length along the facade.

Does anyone have an idea of what dimensions I can expect, how many steps the stairs will have, and what might be an appropriate width (intended to allow for carrying pellet sacks on a sack trolley down the stairs)?

From ground level to floor level in the basement is 1650 mm.

Thanks for the help d^_^b

 

[RoughChuck]

Two riser heights + the tread depth = 640 mm provides a staircase that is comfortable to walk.
A riser height between 150 and 170 is normal.
If you choose a riser height of 150mm, it will be 1650/150 which gives 11 steps.
Then the tread depth will be 150+150-640=340mm.
The length of the staircase will be 10*340= 3400 mm.
Tweak the numbers according to your preference.

Regarding the width of the staircase, I have no experience with pellet bags, but 1100mm internally should be sufficient to carry down and maneuver most things you need, if there is a little space on the "hinge side" of the door. Since pellet transport seems to be the main use: simulate "pellet work" and check how large a turning radius you need down there.