Integral metal stair tread and riser adjustably connectable to adjacent tread and riser

摘要

This has a flange 35 at the lower edge of the riser 29 and a flange 30 at the back edge of the tread 28, the flanges being directed at the same angle as the angle of the staircase, the upper flange having bolt holes 31, 31A, arranged at different distances along the direction of inclination of the staircase to suit different heights between floors. Riser flange 35 may have a single bolt hole 36 for connexion with one of the holes 31 or 31A. IMAGE