ADA MODULAR PRECAST TACTILE PAVER TILES
SECTION 09PT
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.
2. DESCRIPTION
This Section
consists of furnishing and installing modular precast
tactile paver tiles factory pre-cast with a 1 3/8"
thick reinforced epoxy polymer concrete core ready for
field installation.
- SUBMITTALS
- Product Data: Submit manufacturer’s
literature describing products, installation procedures
and routine maintenance.
- Samples for Verification
Purposes: Submit one (1) sample of full size modular precast
tactile paver tile 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 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
during installation.
- Americans with Disabilities
Act (ADA): 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. In addition products must comply with CALIFORNIA
TITLE 24 requirements regarding pattern, color and sound
on cane contact.
- Vitrified Polymer Composite
(VPC) modular precast tactile paver tiles shall be an epoxy
polymer composition with an ultra-violet coating employing
aluminum oxide particles 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 2486* 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) modular precast tactile paver tiles complete with polymer concrete core shall meet or exceed the following test criteria:
- Accelerated Aging and Freeze
Thaw Test of Tile and polymer concrete core 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 polymer concrete core when tested to ASTM-B
117 not to show any deterioration or other defects after
100 hours of exposure.
- Polymeric Concrete and/or epoxy resin properties shall meet or exceed the following
test criteria:
- Tensile Strength of Resin: greater than 7,000psi; ASTM D638
- Modulus of Elasticity of Resin: greater than 4,000psi; ASTM D638
- Bond Strength of Polymeric
Concrete: greater than 8,000psi; ASTM C551
- Sealant for joint between tiles and joint between tiles and concrete: Cured material
shall be not less than 80 Shore A hardness and compatible with platform edge tile
and opposite
joint edge material. Acceptable: Hilti
- Color shall be yellow conforming to Federal Color No. 33538. Color shall be
homogenous throughout the tile.
- DELIVERY, STORAGE AND HANDLING
- Precast pavers 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.
- Precast pavers 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 precast pavers 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
- Modular precast tactile paver tiles shall be guaranteed in writing for a period of five 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) Modular Precast Tactile Paver 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.
C. Color: Yellow conforming to Federal Color No. 33538. Color shall be homogenous throughout the tile.
- MATERIALS
- Stainless steel expansion
anchors 3/8" inch diameter by 5 inch long to be positioned
in the molded recess of the modular precast tactile paver
tile and concealed with a VPC concealed cap.
- 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.
PART 3 EXECUTION
- INSTALLATION
- Comply with applicable requirements
of the panel manufacturer’s installation instructions.
- Panels shall have a structural
epoxy polymer concrete fill and epoxy coated rebar system
installed by the panel manufacturer.
- Layout paver tiles and joints
to fit existing spacing between expansion joints in concrete
slab, and ends of platform, with pavers cut to manufacturer’s
preset rib configuration. Ribs shall be perpendicular to
the platform track edge. Provide panels with largest size
units as possible at ends.
- Sawcut a ¼ " wide by
1 ½ " deep groove 24" back from platform edge
as required.
- Remove and dispose of the
concrete topping approximately 24" back from edge of
concrete.
- Provide a uniform and true
1 ½ " deep rebate as required by diamond grinding the
structural concrete substrate which is revealed after the
concrete topping is removed.
- Patching with approved mortar
compound may be required in areas where the recess depth
exceeds the tolerances or where deteriorated concrete requires
removal.
- Vacuum concrete sub-base
to remove dirt, dust debris and loose particles. Finish
preparation by wiping any residual dust or dirt with an
approved solvent.
- Apply heavy duty elastomeric
polyurethane adhesive with a ½ " square notch trowel.
- Place plastic shims on substrate
to coincide with leading edge corners of paver tile to set
paver tile flush with adjacent surface.
- Set first paver tile over
shims and adhesive and make final adjustment to the shims.
- Drill one 3/8 " diameter
by 7" deep hole in the pre-determined paver tile recess
and vacuum clean.
- Set one stainless steel expansion
anchor (3/8 " dia. X 5" long) checking that torque
of 20-25 foot pounds is achieved.
- Place plastic shim on substrate
to coincide with leading edge corner of second paver tile
to be placed.
- Set second paver tile over
shims and adhesive and make final adjustments to the shim.
Repeat the aforementioned steps for a continuous installation
of paver tiles.
- Return to the start of paver
tile installation to complete the finish operations.
- Mechanically abrade, vacuum
clean and solvent wipe two concealed cap recesses.
- Apply urethane sealant/adhesive
into cap well to cover fastener then set concealed cap with
mallet.
- Vacuum clean, mechanically
abrade and solvent wipe leading edge groove between panel
and adjacent concrete surface.
- Place 3/8" diameter
foam rope at bottom of leading edge groove.
- Tape off each side of leading edge groove in preparation for the self leveling urethane sealant.
- Pour Hilti self leveling
urethane sealant in groove filling flush to top of joint
then remove the tape prior to curing.
- Inspect and clean the paver
tile after allowing the self leveling sealant to cure undisturbed
or protected for 48 hours.
- Maintain expansion and contraction
joints in platforms and any other reference marker or opening
that may be required to be left exposed.
- CLEANING AND PROTECTING
- Protect paver tiles against
damage during construction period to comply with paver tile
manufacturer’s specification.
- Protect paver tiles against
damage from rolling loads following installation by covering
with plywood or hardwood.
- Clean paver 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 paver tile as specified by manufacturer.
--- End of Section ---