REPLACEABLE CAST IN PLACE
DETECTABLE WARNING SURFACES

SECTION 32 1726

PART 1 GENERAL

1.01 SECTION CONTENTS

A. Drawings and general provisions of Replaceable Cast in Place Detectable Warning Surfaces of the Contract, including general and Special Conditions and Division 1 Specifications Section, apply to this Section.

1.02 DESCRIPTION

A. This Section specifies furnishing and installing Replaceable Cast in Place Detectable Warning Surface Tiles where indicated. Not recommended for asphalt applications.

1.03 SUBMITTALS

A. Product Data: Submit test reports from qualified accredited independent testing laboratories to qualify that materials proposed for use are in compliance with requirements and meet or exceed the properties indicated on the specifications. All tests shall be conducted on a Replaceable Cast in Place Detectable Warning Surface Tile system as certified by a qualified independent testing laboratory.
B.Samples for Verification Purposes: Submit two (2) tile samples minimum 6” x 6” of the kind proposed for use.
C. Shop drawings are required for products specified showing tile surface profile, plans of tile placement including joints and material to be used as well as outlining installation materials and procedure.
D. Material Test Reports: Submit test reports from qualified accredited independent testing laboratories to qualify the materials proposed for use are in compliance with requirements and meet or exceed the properties indicated on the specifications. All tests shall be conducted on a Replaceable Cast in Place Detectable Warning Surface Tile system as certified by a qualified independent testing laboratory.
E. Maintenance Instructions: Submit copies of manufacturer’s specified installation and maintenance practices for each type of Replaceable Cast in Place Detectable Warning Surface Tile and accessories as required.

1.04 QUALITY ASSURANCE

A. Provide Replaceable Cast in Place Detectable Warning Surface and accessories as produced by a single manufacturer with a minimum of three (3) years experience manufacturing Detectable Warning Surfaces.
B. Installer’s Qualifications: Engage an experienced installer certified in writing by Replaceable Cast in Place Detectable Warning Surface Tile manufacturer as qualified for the installation, who has successfully completed installations similar in material, design and extent to that indicated for the project.
C. Americans with Disabilities Act (ADA): Provide Replaceable Cast in Place Detectable Warning Surface Tiles which comply with the detectable warning on walking surfaces section of the Americans with Disabilities Act (Title III REGULATIONS, 28 CFR Part 36 ADA STANDARDS FOR ACCESSIBLE DESIGN, Appendix A, Section 4.29.2 DETECTABLE WARNINGS ON WALKING SURFACES).
D. 2007 California Code of Regulations (CCR) Title 24, Part 2 as it relates to Detectable Warnings..
E. Replaceable Cast in Place Detectable Warning Surfaces Tiles shall be an engineered composite polymer composition ultra violet stabilized. The tile shall incorporate an in-line pattern of truncated domes with a diameter of nominal 0.9”, a height of nominal 0.2”, and a center-to-center spacing of nominal 2.35”. For enhanced public safety the field area shall consist of a non-slip surface with a minimum of 90 raised prism points 0.03” high, per square inch; “Access Tile” manufactured by Access Products Inc. Tel (888) 679-4022.

1.Tile Dimensions: Replaceable Cast in Place Detectable Warning Surface Tiles shall be held within the following dimensions and tolerances:
Specifiers Note: Edit section below by selecting desired length and width. Delete non-relevant dimensions.

Length and Width: (24” x 36”), (24” x 48”) (24” x 60”), (36” x 48”) (36” x 60”) nominal
Thickness at Perimeter: 0.660” +/-5% max.
Thickness at Fastener: 0.250” +/-5% max

2. Physical Characteristics

Compressive Strength	> 26,000 psi	ASTM D 695
Flexural Strength	> 22,000 psi	ASTM D790
Water Absorption (24 hours at RT)	<0.2%	ASTM D 570-98
Slip Resistance	> 0.8	ASTM C 1028-96
Flame Spread Index	< 25	ASTM E84-05
Salt Spray	200 hours No Deterioration.	ASTM B 117-03
Chemical Stain Resistance	No Deterioration	ASTM D 543-95
Abrasion Resistance	> 500	ASTM C 501
Accelerated Weathering	2000 hrs, Delta E < 5.0	ASTM G 155-05a
Tensile Strength	> 10,000 psi	ASTM D 638
Freeze Thaw	No Deterioration	ASTM D 1037-99

1.05 DELIVERY, STORAGE AND HANDLING

A. Replaceable Cast in Place Detectable Warning Surface Tiles shall be suitably packaged or crated to prevent damage in shipment and handling. Finished surfaces shall be protected by sturdy plastic wrappings to protect tile from concrete residue during installation and tile type shall be identified by part number.
B. Replaceable Cast in Place Detectable Warning Surface Tiles shall be delivered to location at building site for storage prior to installation.

1.06 SITE CONDITIONS

A. Environmental Conditions and Protection: Maintain minimum temperature of 40oF in spaces to receive Replaceable Cast in Place Detectable Warning Surface Tiles for at least 24 hours prior to installation, during installation and for not less than 24 hours after installation.
B. The use of water for work, cleaning or dust control, etc. shall be contained and controlled and shall not be allowed to come into contact with the general public. Provide barricades or screens to protect the general public.

1.07 GUARANTEE

A. Replaceable Cast in Place Detectable Warning Surface Tiles shall be guaranteed in writing against manufacturer’s defects for a period of five (5) years from date of sale. The guarantee includes defective work, breakage, deformation, fading and loosening of tiles.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. The Replaceable Cast in Place Detectable Warning Surface Tile is based on Access Tile manufactured by Access Products Inc. Tel. (888) 679-4022

B. Color shall be integral throughout the tile and UV stable.

Yellow 33538	Brick Red 22144
Light Grey 26280	Ocean Blue 15187
Dark Grey 36118	Ochre Yellow 23594
Onyx Black 17038	Colonial Red 20109
Pearl 37875

2.02 INSTALLATION MATERIALS

A. Stainless steel tamper resistant flat-head hex head socket screw 1” diameter x 1-1/4” long and Access Tile corrosion resistant anchors as supplied by Access Products Inc.

PART 3 EXECUTION

3.01 INSTALLATION

A. During Replaceable Cast in Place Detectable Warning Surface Tile installation procedures, ensure adequate safety guidelines are in place and that they are in accordance with the applicable industry and government standards.
B. Prior to placement of the Replaceable Cast in Place Detectable Warning Surface Tiles, review manufacturer and contract drawings with the contractor prior to the construction and refer any and all discrepancies to the engineer.
C. The specifications of the tile embedment and related materials shall be in strict accordance with the contract documents and the guidelines set by their respective manufacturers. Not recommended for asphalt applications.
D. 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 Replaceable Cast in Place Detectable Warning Surface Tiles. An overly wet mix will cause the tile to float. Under these conditions, suitable weights such as 2 concrete blocks or sandbags (25 lb) shall be placed on each tile.
E. The concrete pouring and finishing operations require typical mason’s tools, however, a 4’ long level with electronic slope readout, 25 lb. weights, a large non-marring white rubber mallet and a 1” radius edging tool are specific to the installation of the Replaceable Cast in Place Detectable Warning Surface Tile system.
F. The factory-installed plastic sheeting must remain in place during the entire installation process to prevent the splashing of concrete onto the finished surface of the tile.
G. When preparing to set the tile, it is important that no concrete be removed in the area to accept the tile. It is imperative that the installation technique eliminates any air voids under the tile. The Access Tile’s vented perimeter allows air to escape during the installation process.
H. The concrete shall be poured and finished true and smooth to the required dimensions and slope prior to the tile placement. Immediately after finishing concrete, the electronic level should be used to check that the required slope is achieved. The tile shall be placed true and square 6” to 8” back from the curb edge in accordance with the contract drawings. The Replaceable Cast in Place Detectable Warning Surface Tiles shall be tamped into the fresh concrete to ensure that the field level of the tile is flush to the adjacent concrete surface. The embedment process should not be accomplished by stepping on the tile as this may cause uneven setting which can result in air voids under the tile surface. The contract 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.
I. In cold weather climates where snow plows are frequently used it is recommended that the Replaceable Cast in Place Detectable Warning Surface Tiles be set deeper such that the top of domes are level to the adjacent concrete on the top and sides of ramp and that the base of domes allow water drainage. This installation will reduce the possibility of damage due to snow clearing operations.
J. Immediately after placement, the tile elevation is to be checked to adjacent concrete. The elevation and slope should be set consistent with contract drawings to permit water drainage to curb as the design dictates. Ensure that the field surface of the tile is flush with the surrounding concrete and back of curb so that no ponding is possible on the tile at the back side of curb.
K. While concrete is workable, a 1/4" radius edging tool shall be used to create a finished edge of concrete, then a steel trowel shall be used to finish the concrete around the tile’s perimeter, flush to the field level of the tile.
L. 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 that may rock the tile causing a void between the underside of tile and the concrete.
M. Following tile placement, review installation tolerances to contract drawings and adjust tile before the concrete sets. Two suitable weights of 25 lb each may be required to be placed on each tile as necessary to ensure solid contact of the underside of tile to concrete.
N. 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.
O. Tiles can be cut to custom sizes, or to make a radius, using a continuous rim diamond blade in a circular saw or mini-grinder. Use of a straightedge to guide the cut is advisable where appropriate.
P. When creating custom tile sizes or a radius, a fastener/anchor may have to be cut away from the tile. If required, a new fastener location can be created in the field of the tile using the extra fastener/anchor. Drill through the tile with a 1” drill bit and counter sink the opening with a 1/2” bit to accommodate the screw head.

3.02 CLEANING AND PROTECTING

A. Protect tiles against damage during construction period to comply with manufacturer’s specification.
B. Protect tiles against damage during construction period to comply with manufacturer’s specification.
C. Clean 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 tile by methods specified by manufacturer.
D. Comply with manufacturer’s maintenance manual for cleaning and maintaining the surface and it is recommended to perform annual inspections for safety and tile integrity.

Specifications subject to change.