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CASTinTACT®
Concrete Tactile
Warning Panels
Full Depth Retro Fit / Block Out
©
COPYRIGHT MASONS SUPPLY COMPANY 2010
CAST inTACT .com
JAN 2010
3.3 CAST IN PLACE INSTALLATION PROCEDURES
A.
Temperature affects the setting time and rate of strength of
concrete, standard ACI procedures for storing, mixing, and placing
concrete in hot or cold weather are recommended. See ACI 305
“Standards on Hot Weather Concreting," or ACI 306 “Standard on
Cold Weather Concreting.”
B.
Saw cut existing concrete full depth using a diamond blade.
Oversize area a minimum 2” in each direction of warning panel
layout. Contain slurry and dispose of properly. Partial depth and
breakout will not be allowed. Do not chip the concrete on perimeter
of cut out. Theperimeter chips andover cutsmust be filledandpatched
with an gray epoxy gel adhesive approve by manufacturer.
C.
Provide expansion and control joints indicated in drawings. All
joint materials used follow manufacturer’s directions and instructions.
1.
Expansion joints must be carried through all layers of installation
materials including warning panels, concrete substrate and steel
reinforcing. Joints should be spaced typically 8’ to 12’ in both
directions. All perimeter edges of ramps or blended transitions
should have expansion joints. (Refer to ACI 360R guidelines for
details on placement, size and specifications of material)
D.
Dowel into existing concrete as necessary.
E.
The concrete specified shall conform to contract documents
with amaximum slump of 4”. Concrete shall be pouredand finished
to the proper grade and slope prior to warning panel placement.
Concrete thickness shall be increased 1” in depth beneath area
receiving warning panels. Prepare a well drained and properly
compacted subgrade. Leave no puddles, standing water, ice,
frost or mud. Consult contract documents for information on
subgrade and compaction details.
F.
Consult contract documents for more information on locations
to receive detectable warning panels.
1.
Monolithic poured curb and sidewalk - place panels 6” to 8”
from curb line.
2.
Existing curbs - place panels 8” from curb line to allow 2” of new
concrete in front of panels.
3.
Install across the full width of ramp a minimum 24” in depth.
G.
Concrete shall be poured, floated and recessed
⅞
” below
finish grade to proper grade and slope.
H.
Concrete shall be finished with wood float to leave an open
surface.
I.
Pre-dampen back of
CASTinTACT® 3
panels with potable water
Apply 1/8” thickness of
CASTinTACT® Wet Set PreMix
(3:1 ratio of
powder to potable water) or (1:1:
½
ratio of Portland cement, clean
masons sand and potable water). Work into textured surface
on back of panel with rubber float for 100% surface coverage.
Alternatively a scrub coat of fresh concrete removed from the
INSTALaTACT®
tool can be used as a parge coat.
J.
Install Tactile Panels immediately in fresh concrete and lightly
tap panels to grade using a rubber mallet to insure bond and
100% surface contact.
Wedge or flared edge of panel facing the
curb and square edges of panel joints butted together.
Base of
truncated dome should be flush with adjacent surfaces to permit
proper drainage and eliminate tripping hazard between surfaces.
Tolerance between tactile panels and surrounding surfaces is
1/16” maximum. Immediately after placement re-check slope
and elevation for proper grade.
ALTERNATE (EXTREME CLIMATES) Leave a 3/16” gap between
square cut panels joints and seal with an compatible elastomeric
sealant conforming to ASTMC920. Follow sealant’s manufacturer’s
recommendations for joint preparationand installationprocedures.
Protect from traffic until sealant cured.
K.
Finish surrounding concrete flush with tactile panels. Edge
around panels with 1/8” radius edger, install control joints and finish
in accordance with project specifications.
L.
Finish joints per specifications. Follow all manufacturer’s
recommendations for joint preparation and installation procedures.
M.
Clean fresh concrete residue off panels with a stainless steel
wire brush and rinse with clean water and hydra sponge to ensure
a clean appearance.
N.
Fresh concrete surrounding tactile panels should be cured in
accordance with ACI 308. Use a curing compound meeting ASTM
C 309. PROTECT PANELS WITH
PROTECTaTACT
OR SIMILAR WHILE
SPRAYING CURING COMPOUND.
3.4 CLEANING
A.
Removeall unusedmaterial, tools, andequipment. Disposeof properly.
B.
If the detectable / tactile surface requires, clean the panels in
accordance with
CASTinTACT®
Cleaning and Maintenance Guide.
3.5 PROTECTION
Protect the
CASTinTACT® 3
Warning Panel surface from traffic until
desiredstrength isachieved. If necessary,protectpanelswithplywood
and an underlayment layer of non-staining, non-woven curing
blanket until acceptance of work. Secure plywood if needed.
3.6 STORAGE
Store products under cover in manufacturer’s unopened
packaging until ready for installation. Store pallets on supported
flat surface. DO NOT DOUBLE STACK PALLETS.
Download the full specifications online at
www.CASTinTACT.com