Patent ID: 8028491
Filing Date: 2011-10-04
Classification: E01C,Y10T

Abstract:
1. A method of installing a replaceable, wet-set tactile warning surface unit, said unit having an upper surface, a lower surface, and a perimeter flange that is thicker than the rest of the body and extending from the lower surface and having a plurality of spaced slots, the body defining a series of raised projections on its upper surface and defining a plurality of spaced through-holes from the upper to the lower surface, comprising: installing a plurality of fasteners through the plurality of through-holes; affixing an anchor member to each of the plurality of fasteners, such that the anchor members are proximate the lower surface of the body; and placing the unit into fresh concrete and applying force to the top of the unit to embed the unit in the concrete such that the unit edges are approximately flush with the top surface of the concrete and the air trapped under the unit escapes through the spaced slots in the perimeter flange.