attached to a deck or wall vertical surface by an attachment bracket 312 as shown in fig1 with the two pieces of the stringer attached to pivot holes 312 a in the bracket riser tred supports 314 having pivot holes 316 spaced the same distances as the pivot holes in the attachment bracket are spaced along the risers and are fixed to the risers by suitable means at screw holes 318 to cause the riser tred supports to be parallel to the attachment bracket and equally spaced along the risers these vertical pivot riser tred support 314 are unique because the supports pivot for adjustment only and are fixed in position after adjustment the fixing of the riser tred supports joins the two pieces of the stringer to form a one piece permanently adjusted stringer which is structurally superior to normal stair construction the positioning of the pivot points opposite risers allows the top of the stair to be attached the same distance down from the deck floor level each time regardless of the riser height because all risers adjust equally including the first riser the configuration of the riser tred support allows risers 80 and treds 90 to slide against each other for adjustment and when the.