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Liberty Tower Exterior Renovations - Ph 2 © Copyright, Kil Architecture / Planning <br />South Bend, Indiana September 2020 <br />2. Average absorption of 5% with no unit greater than 7% when tested according to ASTM <br />C 140. <br />3. Resistance to 50 freeze -thaw cycles, when tested according to ASTM C1645, with no <br />breakage greater than 1.0% loss in dry weight of any individual unit. Conduct this test <br />method not more than 12 months prior to delivery of units. <br />D. Provide pavers meeting the minimum material and physical properties set forth in CSA <br />A231.1-06, Precast Concrete Paving Slabs. (For all Roof Paver types) <br />1. Minimum compressive strength 5000 psi (55MPa). <br />E. Provide pavers meeting the minimum flexural strength of 650 psi when tested in accordance to <br />ASTM C293 Standards Test Method for Flexural Strength of Concrete. <br />F. Provide pavers meeting the minimum slip resistance for coefficient of friction of 0.6 per the <br />NIST-Brungraber Test. <br />G. Maximum allowable breakage of product is 5%. <br />2.2 SUPPORT PEDESTAL SYSTEM <br />A. Basis -of -Design Product: The Support Pedestal System is based on: <br />1. Bison Deck Pedestal Systems: (Select product or products being used) <br />a. Versadjust - Typical Height Range 2 11/4" -36 inches, Weight Bearing 1500 <br />lbs/pedestal. Spacer Tabs: Specify 1/8 inch or 3/16 inch. <br />b. Level -It <br />2. As manufactured by: <br />a. Bison Innovative Products <br />b. 1975 W. 13th Ave, P.O. Box 40246 <br />C. Denver, CO 80204. <br />B. Product requirements: <br />1. Pedestal System Type 3: Stackable Low Height Pedestal Supports <br />a. Stackable Sizes: <br />1) Model: HD25 Stackable 1/4 inch (6.4mm) tall, with integral Spacer Tabs <br />2) Model: HD50 Stackable 1/2 inch (13mm) tall, with integral Spacer Tabs <br />3) Model: HD75 Stackable 3/4 inch (19mm) tall, with integral Spacer Tabs <br />4) Integral Spacer Tabs: (Choose size) <br />(a) 1/8 inch <br />(b) 3/16 inch <br />5) Material: Mineral Filled High Density Copolymer Polypropylene. <br />(a) Contains 20% Post industrial recycled material. <br />6) Bearing Surface Area: 37.68" sq inches (9032 sq mm). <br />7) NOTE: Do not exceed 4 units high. <br />2. Pedestal System Type 4: Adjustable Low Height Pedestal Supports <br />a. Model: Adjustable LO <br />b. Height: 1 1/4 inches to 2 inches (32mm - 51mm). <br />C. Rotating Base: <br />1) Size: 7 7/8 inch (200mm) diameter x 3/16 inch (4.75mm) top wall thickness. <br />ROOF CONCRETE PAVERS 07 7600 - 5 <br />PEDESTAL SYSTEM <br />