My two storey terrace house still under construction but almost 90% done. Found out at grd floor staircase on top have a beam across , the beam so deep almost 900 mm deep which believe is wrongly cast until headroom not enough 2meter clearance which stated in UBBL when going up the 3rd step i standing almost hit my head . Then I did highlight in formal letter cc to developer and architects. Then they realignment the 2 - 3rd step in order to cleared the headroom to 2 meter . Yesterday I saw the staircase riser height is different. 1-2 step riser is 150mm 3rd step riser is 190mm then 4th step to 2nd floor is 180mm. In UBBL riser should not exceed 180mm. And also all riser height must equal to avoid accident fall from staircase.