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Gateway Park Center PERKINS+WILL <br /> 810495.00 <br />12/06/18 <br />031000-7 Concrete Formwork <br />D.Forms for Cylindrical Columns and Supports: Metal, glass-fiber reinforced <br />plastic, or paper or fiber tubes that will produce smooth surfaces without joint <br />indications. <br />1.Provide units with sufficient wall thickness to resist wet concrete loads <br />without deformation. <br />E.Pan-Type Forms: Glass-fiber-reinforced plastic or formed steel, stiffened to <br />support weight of placed concrete without deformation. <br />F.Chamfer for Form Corners: <br />1.Types: Chamfer strips of wood, metal, PVC or rubber fabricated to <br />produce smooth form lines and tight edge joints, 3/4" (20mm) size, <br />maximum possible lengths. <br />2.Required for all exposed corners of beam, walls and column forms. <br />G.Form Ties: <br />1.Type: Factory-fabricated metal, adjustable length, designed to prevent <br />form deflection and to prevent spalling concrete upon removal. <br />2.Ties used for architecturally exposed concrete shall be galvanized. <br />3.Ties shall not leave metal closer than 1-1/2" (40mm) to exposed surface. <br />4.When removed, ties shall not leave holes larger than 1" (25mm) diameter <br />in concrete surface. <br />5.Removable Ties: Use type with tapered cones, 1" (25mm) outside <br />diameter, for concrete walls which will remain exposed to view and <br />scheduled for architectural finishes. <br />6.Snap-Off Ties: Use for concrete walls below grade and walls which will <br />not remain exposed to view and are not scheduled for architectural <br />finishes. <br />7.Wire Ties: Not acceptable. <br />H.Nails, Spikes, Lag Bolts, Thru-Bolts, Anchorages: <br />1.Type: Of size, strength and quality to meet the required quality of <br />formwork. <br />I.Form Release Agent: <br />1.Type: Commercial formulation form release agent of non-emulsifiable <br />type which will not bond with, stain, or adversely affect concrete surfaces. <br />Form release agent shall not impair subsequent treatment of concrete <br />surfaces requiring bond or adhesion, or impede the wetting of surfaces to <br />be cured with water or curing compounds. Form release agent shall be <br />compatible with subsequent architectural finish materials applied to <br />concrete surfaces. Apply in compliance with manufacturers' instructions. <br />2.Form release agent shall meet, at a minimum, all federal and state <br />requirements for volatile organic compounds (VOC’s).