CASTinTACT® Concrete Tactile Warning Panels

-7- For more information please visit: CASTinTACT® Concrete Tactile Warning Panels Early Entry - Fresh Set Install © 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. Provide expansion and control joint width 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) C. Position forms for proper grade, slopes anduniformslab thickness. Consult contract documents for details on reinforcement and joint placement to prevent random cracking. D. The concrete specified shall conform to contract documents with a maximum slump of 4”. Concrete shall be poured and 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. E. 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 or blended transition a minimum 24” in depth. F. Recessed panels below finish grade with INSTALaTACT® installation template tool before initial concrete set and level base with wood float to leave an open surface. G. Pre-dampen back of CASTinTACT® 3 panels with potablewater. 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. H. 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 a compatible elastomeric sealant conforming to ASTMC920. Follow sealant’s manufacturer’s recommendations for jointpreparationand installationprocedures. Protect from traffic until sealant cured. I. 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. J. Finish joints per specifications. Follow all manufacturer’s recommendations for joint preparation and installation procedures. K. Clean fresh dried concrete residue off panels with a stainless steel wire brush and rinse with clean water and hydra sponge to ensure a clean appearance. L. 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. Remove all unused material, tools, and equipment. Dispose of 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 desired strength is achieved. If necessary, protect panels with plywood and a 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