What Wall Height Is Needed Around Stairs?

[Ed60062]

I have about 6 steps against the outside of my house that go to the lower level. I am replacing an old iron railing and need to know how high the new railing or wall should be built. I'm not talking about a handrail but a wall to keep someone from falling into the stairwell. I'm thinking it should be somewhere between 24" and 36" high. Thanks.

[pushkins]

There is nothing specific to your situation however the following would apply.
R312.1 A 36" guard is required for any surface 30" or higher.

Yours fits into this as standing on the ground your steps would go down further than 30" so a similar situation as deck,porch etc... codes.

[Ed60062]

Thank you very much.