Truncated Domes Cast-In-Place Replaceable Tiles - 2' x 4' - Wet-Set Style for Installation in Wet Concrete American Made Access Tiles Truncated Domes Distributed Nationwide by Truncated Domes Depot Always Ship Free by Ground Services. Expedited air shipping is not available. Orders ship from New York, typically in 1-4 business days. There are many options available when choosing the right truncated domes for your property. While these cast-in-place truncated domes are used for new construction where wet cement will be poured, projects with existing concrete surfaces may opt to use Surface Applied Tiles that can be applied to the surface of existing concrete. This cast in place style of truncated domes tile has a unique two-part design allowing for quick and easy replacements of worn or damaged tiles over the years. ADA Compliance Cast-in-Place Replaceable Truncated Domes - 2' x 4' Size Meets ADA Federal and State requirements with 2.35" center-to-center, in-line dome spacing 0.9" base and 0.45" top diameter Truncated dome size and spacing meets all ADA Federal and State requirements Fully complies with all ADA and OHSA requirements for surface height transitions to eliminate trip hazards Tiles can be adjoined either side-by-side or end-to-end with consistent dome spacing The wide dome configuration creates a smooth rolling transition for carts, strollers, wheelchairs and walkers High density, diamond grip™ pyramid micro texture designed for exceptional slip resistance in wet and dry conditions. These tactile warning ground surface tiles are required by the Americans with Disabilities Act. This product is used to enable detecting the boundary between the street and the sidewalk and most new construction sites will require some sort of ADA compliant truncated domes to pass inspection. It is important to make sure that your architect, engineer, and compliance staff are aware of regulations when choosing the appropriate size, color, style and placement of your truncated domes. We always recommend getting in touch with your city accessibility officials to make sure you select the right product for your needs.