Detectable warning safety edge tile

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  1. related documents

  1. Drawings and general provisions of Contract, including General and Special Conditions and Division 1 Specifications Section, apply to this Section.


    1. This Section specifies furnishing and installing Cast-In-Place Detectable/Tactile Warning Tiles where indicated.


  1. Product Data: Submit manufacturer’s literature describing products, installation procedures and routine maintenance.

  2. Samples for Verification Purposes: Submit three (3) samples of full size cast-in-place detectable/tactile warning tiles of the kind proposed for use.

  3. Shop drawings are required for products specified showing fabrication details; tile surface profile; fastener locations; plans of tile placement including joints, and material to be used as well as outlining installation materials and procedure.

  1. Material Test Reports: Submit test reports from qualified independent testing laboratory indicating that materials proposed for use are in compliance with requirements and meet the properties indicated.

  2. Maintenance Instructions: Submit copies of manufacturer’s specified maintenance practices for each type of detectable/tactile tile and accessory as required.


A. Provide cast-in-place detectable/tactile warning tiles and accessories as produced by a single manufacturer.

  1. Installer’s Qualifications: Engage an experienced Installer certified in writing by tactile flooring manufacturer as qualified for installation, who has successfully completed tile installations similar in material, design, and extent to that indicated for Project. Manufacturer’s supervisor shall be present at all times.

  2. Americans with Disabilities Act (ADA): Provide detectable/tactile warning surfaces which comply with the detectable warnings on walking surfaces section of the Americans with Disabilities Act (Title 49 CFR TRANSPORTATION, Part 37.9 STANDARDS FOR ACCESSIBLE TRANSPORTATION FACILITIES, Appendix A, Section 4.29.2 DETECTABLE WARNINGS ON WALKING SURFACES. In addition products must

comply with CALIFORNIA TITLE 24 requirements regarding patterns, color and sound on cane contact.

  1. Vitrified Polymer Composite (VPC) Cast-in-Place Detectable/Tactile Warning tiles shall be an epoxy polymer composition with an ultra-violet coating employing aluminum oxide particles in the truncated domes:

  2. Dimensions:

Tile: Nominal 2 ft. by 2 ft. by 1.375 inches thick; 1.575 inches thick at the domes, with 1-3/8” inch deep perimeter flange and seven 1 3/8” deep internal flanges.

Assembly: shall be held within the following dimensions and tolerances:

Length and Width:


24” x 72” nominal



1.400”  5% max.

Face Thickness


0.125”  5% max.

Warpage of Edge


 0.5% max.

  1. Vitrified Polymer Composite (VPC) Cast-in-Place Detectable/Tactile Warning Tiles adhered to concrete shall meet or exceed the following test criteria:

  1. Water Absorption of Tile when tested by ASTM D 570-98 not to exceed 0.05%.

  1. Slip Resistance of Tile when tested by ASTM C 1028-96 Wet/Dry Static Co-efficient of Friction values are not to be less than 0.80 on top of domes and field area.

  1. Compressive Strength of Tile when tested by ASTM D 695-02 not to be less than 28,000 psi.

  1. Tensile Strength of Tile when tested by ASTM D 638-03 not to be less than 19,000 psi.

  1. Flexural Strength of Tile when tested by ASTM D 790-03 not to be less than 25,000 psi.

  1. Chemical Stain Resistance of Tile when tested by ASTM D 543-95 (re approved 2001) to withstand without discoloration or staining - 10% hydrochloric acid, urine, saturated calcium chloride, black stamp pad ink, chewing gum, red aerosol paint, 10% ammonium hydroxide, 1% soap solution, turpentine, Urea 5%, diesel fuel and motor oil.

  1. Abrasive Wear of Tile when tested by BYK - Gardner Tester ASTM D 2486-00* (*ATX-G-U Standard) with reciprocating linear motion of 37± cycles per minute over a 10" travel. The abrasive medium, a 40 grit Norton Metallite sand paper, to be fixed and leveled to a holder. The combined mass of the sled, weight and wood block is to be 3.2 lb. Average wear depth shall not exceed 0.06 after 1000 abrasion cycles measured on the top surface of the dome representing the average of six measurement locations per sample.

  1. Resistance to wear of unglazed ceramic tile by Taber Abrasion per ASTM C501-84 (re approved 2002) shall not be less than 500.

  1. Fire Resistance of Tile when tested to ASTM E 84-05 flame spread be less than 15.

  1. Gardner Impact to Geometry "GE" of the standard when tested by ASTM D 5420-04 to have a mean failure energy expressed as a function of specimen thickness of not less than 550 in. lbf/in. A failure is noted when a crack is visible on either surface or when any brittle splitting is observed on the bottom plaque in the specimen.

  1. Accelerated Weathering of Tile when tested by ASTM G 155-05a for 3000 hours shall exhibit the following result – ΔE <4.5, as well as no deterioration, fading or chalking of surface of tile color No 33538.

  1. Accelerated Aging and Freeze Thaw Test of Tile and Structural Embedment Flange System when tested to ASTM D 1037-99 shall show no evidence of cracking, delamination, warpage, checking, blistering, color change, loosening of tiles or other detrimental defects.

  1. Salt and Spray Performance of Tile and Structural Embedment Flange System when tested to ASTM B 117-03 not to show any deterioration or other defects after 200 hours of exposure.


  1. Tiles shall be suitably packaged or crated to prevent damage in shipment or handling. Finished surfaces shall be protected by sturdy wrappings, and tile type shall be identified by part number.

  1. Tiles shall be delivered to location at building site for storage prior to installation.


  1. Environmental Conditions and Protection: Maintain minimum temperature of 40 degrees F in spaces to receive tactile tiles for at least 48 hours prior to installations, during installation, and for not less than 48 hours after installation. Store the detectable/tactile tiles material in spaces where they will be installed for at least 48 hours before beginning installation. Subsequently, maintain minimum temperature of 40 degrees F in areas where work is completed.

  1. The use of water for work, cleaning or dust control, etc. shall be in contained and controlled and shall not be allowed to come into contact with the passengers or public. Provide barricades or screens to protect passengers or public.

  2. Disposal of any liquids or other materials of possible contamination shall be made in accordance with federal state and local laws and ordinances.

  3. Cleaning materials shall have code acceptable low VOC solvent content and low flammability if used on the site.

  4. Contractor shall coordinate phasing and flagging personnel operations as specified elsewhere.


  1. Deliver extra stock to warehouse designated by engineer. Furnish new materials from same manufactured lot as materials installed and enclose in protective packaging with appropriate identification. Furnish not less than two (2) % of the supplied materials for each type, color and pattern installed.


  1. Cast-in-Place Detectable/Tactile Warning Tiles shall be guaranteed in writing for a period of (10) ten years from date of final completion. The guarantee includes defective work, breakage, deformation, fading and chalking of finishes, and loosening of panels.



  1. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated in the Work include, but are not limited to, the following:

  2. The Vitrified Polymer Composite (VPC) Cast-in-Place Detectable/Tactile Warning Tiles specified is based on Armor-Tile manufactured by Engineered Plastics Inc. (800-682-2525). Existing engineered ADA and California Title 24 field tested

products in service for a minimum of 2 years which are subject to compliance with requirements, may be incorporated in the work and shall meet or exceed the specified test criteria and characteristics.

  1. Color: Yellow conforming to Federal Color No. 33538. Color shall be homogeneous throughout the tile. Tiles are also available in Light Grey (Federal Color No. 26280), Dark Grey (Federal Color No. 36118), Onyx Black (Federal Color No. 17038), Pearl White (Federal Color No. 37875), Brick Red (Federal Color No. 22144), Ocean Blue (Federal Color No. 15187), Ochre Yellow (Federal Color No. 23594), and Colonial Red (Federal Color No. 20109).

  1. Substitutions: Substitutions shall be made only under provisions of the contract and must meet all applicable standards for compliance with Americans with Disabilities Act (ADA). Any proposed substitution must meet standards specified in paragraph 1.4 D, 1.4 E and must be equivalent in appearance and function to the tile specified herein.


  1. Heavy duty elastomeric polyurethane sealant as manufactured by Boiardi, Mapei, Bostik or approved equal.



  1. During Cast-In-Place Detectable/Tactile Warning Tile installation procedures, ensure adequate safety guidelines are in place and that they are in accordance with the applicable industry and government standards.

  1. The specifications of the structural embedment flange system and concrete sealants and related materials shall be in strict accordance with the contract documents and the guidelines set by their respective manufacturers.

  1. The physical characteristics of the concrete shall be consistent with the contract specifications while maintaining a slump range of 4 - 7 to permit solid placement of the Cast-In-Place Detectable/Tactile Warning Tile system. An overly wet mix will cause the tile to float, therefore under all conditions, suitable weights such as concrete blocks or sandbags (25 lb) shall be placed on each 2’ x 2’ tile module.

  1. Prior to placement of the Cast In Place Detectable/Tactile Warning Tile system, the contract drawings shall be reviewed and a layout drawing prepared by the installation contractor to resolve the issues related to pattern repeat, tile cuts,

expansion joints, control joints, platform curves, platform end returns and platform surface interferences.

  1. The concrete pouring and finishing operations require typical mason’s tools, however, a mason’s line, radius edge (1/8 x 3/16” return) tool, 4’ long x 2” wide x 1/8” thick steel straight edge, 25 lb. weights, vibrator wand and small sledge hammer with 2” x 6” x 20” wood tamping plate are specific to the installation of the Cast-In-Place System.

  1. The concrete shall be poured and finished level, true and smooth to the required dimensions prior to tile placement. Immediately after pouring concrete, a mason’s line should be strung parallel to track to act as a reference line for placement of tile, and then the tile assembly shall be placed true to the platform edge and to each other on the concrete. The Cast-In-Place tiles shall be tamped or vibrated into the fresh concrete to ensure that the field level of tile is flush to the adjacent concrete or platform edge surface. The shop drawings indicate that the tile field level (base of truncated dome) is flush to adjacent surfaces to permit proper water drainage and eliminate tripping hazards between adjacent finishes. The tolerance for elevation differences between tile and adjacent surface is 1/16”.

  1. Immediately after tile placement, the tile elevation is to be checked to adjacent concrete or rubbing board heights with a steel straight edge. The tile elevation should be set consistent with shop drawings to permit water drainage to or away from track as the platform design dictates.

  1. While concrete is workable steel edging trowel 1/8” radius x 3/16” return is to be used to edge the tile to adjacent concrete surfaces running parallel to track. While edging, ensure that a clean edge definition is created between tile and adjacent concrete and that tile to concrete elevations meet the shop drawing tolerances.

  1. The placement of Cast-In-Place Tile assemblies to each other and to the mason’s line or form edge shall be true and parallel to develop a true line consistent with the platform edge. A tight tile to tile placement can best be achieved by raking out the concrete at the butting edge to avoid trapping concrete or aggregate between tiles and/or form edge.

  1. During and after the tile installation and the concrete curing stage, it is imperative that there is no walking, leaning or external force placed on the tile to rock the tile, causing a void between the underside of tile and concrete.

  1. Following tile placement, review installation tolerances to shop drawings and adjust tile before the concrete sets, suitable weights of 25 lb. shall be placed on each tile and additional weights at tile to tile assemblies as necessary to ensure solid contact of tile underside to concrete.

  1. Following the curing of the concrete, the protective plastic wrap is to be removed from the tile face by cutting the plastic with a sharp knife tight to the concrete/tile

interface. If concrete bleeding occurs between tiles, a wire brush will clean the residue without damage to the tile surface.

  1. An elastomeric polyurethane sealant can be applied (not typical) to the tile edges running parallel to the track or curb. Proper surface preparation requires that the tile and adjacent surfaces are mechanically etched with sandpaper or a carbide burr and wiped clean and dry with acetone. Applications of the polyurethane sealant shall be level to the adjacent surface and a straight line formed to the tile edge. A quality installation of the sealant may require that the tile face be masked off with duct tape to ensure a clean definition of sealant to the adjacent surfaces.

  1. Following the concrete curing stage, protective plastic wrap is to be removed from the tile surface by cutting the plastic with a sharp knife, tight to the concrete/tile interface. If concrete bled under the plastic, a soft brass wire brush will clean the residue without damage to the tile surface.


  1. Protect tiles against damage during construction period to comply with Cast-in-Place detectable/tactile warning tile manufacturer’s specification.

  1. Protect Cast-in-Place detectable/tactile warning tiles against damage from rolling loads following installation by covering with plywood.

  1. Clean Cast-in-Place detectable/tactile warning tiles not more than four days prior to date scheduled for inspection intended to establish date of substantial completion in each area of project. Clean Cast-in-Place detectable/tactile tiles by method specified by tile manufacturer.

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