2199. If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width_______________? September 7, 2025 by Admin A. R + T B. T – R C. 2 + T2) D. R – T ✅ The correct answer is option C.
