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Typical plan views of a stairwayTypical plan views of a stairway
Plan at 2nd fl. level
Plan at 1st fl. level
Plan at basement level
Total Rise of StairwayTotal Rise of StairwayFinished floor
3/8” or 10mm
Joist size
9 3/8” or 184mm
Room Height
8’-0” or 2440mm
Total Rise is 8’-9 3/4” or 2634mm
Comparison between # of risers Comparison between # of risers and treadsand treads
Adjust Answer = 14
4. Number of treads – The number of treads required is always one less than the number of risers; therefore the answer is 13.