SURFACE APPLIED CONCRETE TACTILE TILE
SECTION 09305
PART 1 GENERAL
- related documents
- Drawings and general provisions of Contract, including General and Special Conditions and Division 1 Specifications Section, apply to this Section.
B. DESCRIPTION
- This Section specifies furnishing and installing surface applied concrete tactile tiles where indicated, using an exterior grade tactile warning surface tile herein.
- SUBMITTALS
- Product Data: Submit manufacturer’s
literature describing products, installation procedures
and routine maintenance.
- Samples for Verification
Purposes: Submit three (3) samples of full size surface
applied concrete tactile tiles of the kind proposed for
use.
- 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.
- 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.
- Maintenance Instructions: Submit copies of manufacturer’s specified maintenance practices for each type of tactile tile and accessory as required.
- QUALITY ASSURANCE
A. Provide surface applied tactile tiles and accessories as produced by a single manufacturer.
- Installer’s Qualifications:
Engage an experienced Installer certified in writing by
tactile 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.
- Americans with Disabilities
Act (ADA) Equivalent Facilitation: Provide 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.
- Vitrified Polymer Composite
(VPC) structural panels shall be an epoxy polymer composition
employing a minimum of 25% by weight aluminum oxide particles
or equivalent in the truncated domes:
- Water Absorption of Tile
when tested by ASTM-D 570 not to exceed 0.35%.
- Slip Resistance of Tile
when tested by ASTM-C 1028 the combined wet/dry static
co-efficient of friction not to be less than 0.80.
- Compressive Strength of
tile when tested by ASTM-D 695-91 not to be less than
18,000 psi.
- Tensile Strength of Tile
when tested by ASTM-D 638-91 not to be less than 10,000
psi.
- Flexural Strength of Tile
when tested by ASTM - C293-94 not to be less than 24,000
psi.
- Gardner Impact to geometry
"GE" of the standard when tested by ASTM-D 5420-93
to have a mean failure energy expressed as a function
of specimen thickness of not less than 450 in. lbf/in.
A failure is noted if a hairline fracture is visible in
the specimen
- Chemical Stain Resistance
of Tile when tested by ASTM-D 543-87 to withstand without
discoloration or staining - 1% hydrochloric acid, urine,
calcium chloride, stamp pad ink, gum and red aerosol paint..
- Abrasive Wear of Tile when
tested by BYK - Gardner Tester ASTM-D 2386* with reciprocating
linear motion of 37 ± cycles per minute over a 10"
travel. The abrasive medium, a 40 grit Norton Metallite
sand paper, was fixed and leveled to a holder. The combined
mass of the sled, weight and wood block is 3.2 lb. Average
wear depth shall not exceed 0.030 after 1000 abrasion
cycles measured on the top surface of the dome representing
the average of three measurement locations per sample.
- Fire Resistance:
When tested to ASTM E84 flame spread shall be less than
25.
- Accelerated Weathering of Tile when tested by ASTM-G26-95 for 2000 hours shall exhibit the following result - no deterioration, fading or chalking of surface of tile.
- Vitrified Polymer Composite (VPC) Surface Applied Concrete Tactile Tiles adhered to concrete shall meet or exceed the following test criteria:
- Accelerated Aging and Freeze
Thaw Test of Tile and Adhesive System when tested to ASTM-D
1037 shall show no evidence of cracking, delamination,
warpage, checking, blistering, color change, loosening
of tiles or other defects.
- Salt and Spray Performance of Tile and Adhesive System when tested to ASTM-B 117 not to show any deterioration or other defects after 100 hours of exposure.
- DELIVERY, STORAGE AND HANDLING
- 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.
- Tiles shall be delivered
to location at building site for storage prior to installation.
6. SITE CONDITIONS
- 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 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.
- 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.
- Disposal of any liquids or
other materials of possible contamination shall be made
in accordance with federal state and local laws and ordinances.
- Cleaning materials shall
have code acceptable low VOC solvent content and low flammability
if used on the site.
- Contractor shall coordinate
phasing and flagging personnel operations as specified elsewhere.
- EXTRA STOCK
- 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.
- GUARANTEE
- Surface applied concrete tactile tiles shall be guaranteed in writing for a period of ten years from date of final completion. The guarantee includes defective work, breakage, deformation, fading and chalking of finishes, and loosening of panels.
Part 2 PRODUCTS
- MANUFACTURERS
- 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:
- The Vitrified Polymer Composite (VPC) Surface Applied Concrete Tactile Tiles specified is based on Armor-Tile manufactured by Engineered Plastics Inc. (800-682-2525). Existing engineered and field tested products which are subject to compliance with requirements, may be incorporated in the work and shall meet or exceed the specified test criteria and characteristics.
Color: Yellow conforming to Federal Color No. 33538. Color shall be homogenous throughout the tile.
- MATERIALS
- Stainless steel low profile
expansion anchors 3/16 inch diameter by 2 inch long to be
positioned in the molded recess of ten truncated domes per
tile minimum.
- Heavy duty elastomeric polyurethane
adhesive as manufactured by Boiardi, Mapei, Bostik or approved
equal.
- Heavy duty elastomeric polyurethane
sealant as manufactured by Boiardi, Mapei, Bostik or approved
equal.
- Polymer Composite truncated dome caps at fastener location to be press fit and bonded into ten corresponding truncated domes per tile.
PART 3 EXECUTION
- INSTALLATION
- During all surface preparation
and tile installation procedures ensure adequate safety
guidelines are in place and that they are in accordance
with the applicable industry and government standards.
- The application of all adhesives,
sealants and mechanical fasteners shall be in strict accordance
with the guidelines set by their respective manufacturers.
- Throughout the installation
phases of surface preparation and tile setting, ensure that
care is taken to prevent damage to any work.
- Lay out area to receive tile
and mark with an indelible felt pen a reference line for
the saw cut to be made.
- Make saw cut in existing
substrate straight and true. Ensure all dimensions and tolerances
are as shown on the contract drawing. The saw cut at the
leading edge of the installed tile is to be approximately
¼" wide x ¾" deep and 2’0" from the platform
edge. A trial of the saw cut approximately 10’ long shall
be done on each platform to allow for checking to the contract
drawing and fitting two tiles confirming tolerances are
maintained.
- After the saw cut is made,
the surface between saw cut and platform edge is ready for
planing. Setting the diamond head planer to the appropriate
depth, plane approximately 10 feet of platform edge. Use
two of the tactile tiles shipped as a template to check
all tolerances are within that of the contract drawing.
Make necessary adjustments and continue to plane platform
edge ensuring planing is straight and true and the depth
of the cut is within tolerances.
- After planing has been completed,
the surface is to be vacuumed and flushed with clean clear
water, free from all dirt and debris. Visually inspect all
surface and saw cut for obtrusions or foreign matter. If
obtrusions are present, promptly grind away, making sure
saw cut is not chipped or damaged.
- Immediately prior to installing
the surface applied tactile tiles, all surfaces must be
inspected to ensure that they are clean, dry, free of voids,
curing compounds, projections, loose material, dust, oils,
grease, sealers and determined to be structurally sound
before the application of the setting adhesive. The setting
adhesive requires that the substrate and the ambient temperature
are 40 degree F minimum.
- Spread the adhesive to provide
complete coverage over the planed concrete surface and platform
edge, using a clean, well-maintained ¼" x ¼" V
notch trowel. The adhesive is also to be applied to the
leading edge saw cut to a depth of ½" for proper tile
embedment.
- Inspect the tile and clean
with acetone all dust and other contaminants from the surfaces
to be adhered, then set the tile in place, true and square
to the platform edge. Drill holes true and straight to the
depth required using the recommended bit with holes located
by the molded recesses provided in the tile. Clean dust
from the holes to provide clear passage for the anchor and
eventually the concealed cap.
- Mechanically fasten tiles
to the floor surface using a punch pin and hammer to set
the stainless steel impact anchors provided. Ensure the
fastener has been set to full depth, straight and true,
leaving sufficient clearance between the top of fastener
and top of dome to not interfere with the concealed cap.
Care should be taken when setting the fastener to avoid
any inadvertent blows with the hammer to the tile surface.
- The leading edge of the tile
should be checked to ensure that the tolerance provided
is in accordance with the contract drawings. Adjustment
to the tiles leading edge is accomplished with a small shim
driven into the leading edge saw cut to wedge the tile flange
against the side walls of the groove and hold the tile to
the desired elevation.
- All subsequent tiles are
set following the same procedures as outlined in 9, 10,
11, 12 and 13. The gap of 1/8" allowed between tiles
for expansion and contraction is mandatory.
- Install concealed caps by
first mechanically etching bonding surface then cleaning
with acetone all dust and other contaminants from surface,
then apply the required volume of adhesive provided in the
corresponding recesses of the truncated domes, in accordance
with the manufacturer’s specifications. Tap concealed caps
in place with a plastic mallet. Care should be taken to
avoid any excess adhesive flowing out from around the concealed
cap when inserted.
- Following the installation
of the tiles and allowing the tile setting adhesive 12 hours
for curing, the urethane sealant system color matched to
the adjacent floor finish should be applied to the leading
edge saw cut to finish the tile flush with the adjacent
floor finish. Follow the manufacturer’s recommendations
when mixing or applying the sealant system and ensure that
the joint is clean and free of debris, and any excess adhesive
is cut away to provide sufficient depth for the sealant
in the saw cut in accordance with the contract drawings.
- After the platform edge has
been fully tiled and sealant system applied, the tile surface
shall be cleaned, following the recommended maintenance
and cleaning procedures.
- CLEANING AND PROTECTING
- Protect panels against damage
during construction period to comply with tactile panel
manufacturer’s specification.
- Protect panels against damage
from rolling loads following installation by covering with
plywood or hardwood.
- Clean tactile panels not more than four days prior to date scheduled for inspection intended to establish date of substantial completion in each area of project. Clean tactile panel by method specified by tactile panel manufacturer.
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