Originally had a stairway with block wall on left and Brick supporting on right . Decided its time to open up hallway so checked loading on first floor and removed left hand block wall to expose void under stairs. All is good apart from stairs vibrating i presume due to flex as there was a small amount of support from some large cut nails into block work that now no longer exists. Exposed stringer is 220mm x 28mm and I am looking to beef up the thickness or apply some method to reduce the new bounce vibration. Will be squaring of the lower voided triangle part, probably 600mm max from floor upwards
Any advise would be welcome.
Cheers J
sorry about rotation but hopefully shows my dilema
Any advise would be welcome.
Cheers J
sorry about rotation but hopefully shows my dilema