What are tread and riser sizes?

Maximum riser height 8 1/4 inches, maximum tread depth 9 inches.

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1. What are stair requirements?
2. What are tread and riser sizes?
3. What is the headroom height for doors?
4. What are the handrail heights?
5. What are the guardrail details?
6. What are the building requirements?
7. What is the minimum footer depth?