# Stair Nosing Excluded from Riser Heights ### Issue Image: ![[Pasted image 20241112130710.png | Image of a Stair Nosing]] ## Issue Description: - Certain stair cases are required to have nosing's to prevent slip and increase their contrast. - Adding the retrofit nosing's to a staircase which is already on the limit will result in an increase to the riser height of the stair case past the maximum allowable riser height. - See BCA clause xxxx for details. ## Actions to Prevent this Issue: - [ ] Check that stair calculations include an allowance for stair nosing's throughout.