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Round 1 Bowling and Amusement 12/09/2024 Paradigm Design <br />Main Place Mall Expansion Grand Rapids, MI <br />Santa Ana, California <br />Project #2309147GR <br />HVAC INSULATION 23 0700 - 16 <br />2.11 CORNER ANGLES <br />A.PVC Corner Angles: 30 mils thick, minimum 1 by 1 inch, PVC according to ASTM D 1784, <br />Class 16354-C. White or color-coded to match adjacent surface. <br />B.Aluminum Corner Angles: 0.040 inch thick, minimum 1 by 1 inch, aluminum according to <br />ASTM B 209, Alloy 3003, 3005, 3105 or 5005; Temper H-14. <br />C.Stainless-Steel Corner Angles: 0.024 inch thick, minimum 1 by 1 inch, stainless steel according <br />to ASTM A 167 or ASTM A 240/A 240M, Type 304 or 316. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A.Examine substrates and conditions for compliance with requirements for installation and other <br />conditions affecting performance of insulation application. <br />1.Verify that systems and equipment to be insulated have been tested and are free of <br />defects. <br />2.Verify that surfaces to be insulated are clean and dry. <br />3.Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A.Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will <br />adversely affect insulation application. <br />B.Mix insulating cements with clean potable water; if insulating cements are to be in contact with <br />stainless-steel surfaces, use demineralized water. <br />3.3 GENERAL INSTALLATION REQUIREMENTS <br />A.Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces; <br />free of voids throughout the length of equipment, ducts and fittings, and piping including <br />fittings, valves, and specialties. <br />B.Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required <br />for each item of equipment, duct system, and pipe system as specified in insulation system <br />schedules. <br />C.Install accessories compatible with insulation materials and suitable for the service. Install <br />accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or <br />dry state. <br />D.Install insulation with longitudinal seams at top and bottom of horizontal runs. <br />E.Install multiple layers of insulation with longitudinal and end seams staggered.