| http://www.w3.org/ns/prov#value | - Two or more.(2) Dimensions. (i) Minimum width of tread, 10 inches.(ii) Minimum height of back stop, 4 inches above tread.(iii) Height from top of rail to top of tread, not more than 12 nor less than 9 inches.(iv) If made of wood, minimum thickness of tread shall be 11???2 , preferably 2 inches.(v) Footboards may be made of material other than wood which provides the same as or a greater degree of
|
