ANSI FM 4474-2004 pdf download American National Standard for Evaluating the Simulated Wind Uplift Resistance of Roof Assemblies Using Static Positive and/or Negative Differential Pressures
4 GENERAL REQUIREMENTS
4.1 General During the investigation and prior to physical testing, the manufacturer’s specifications and installation instructions shall be reviewed to verify that the product is capable of being used within the limits of the investigation and to demonstrate proper installation procedures and techniques, as appropriate.
4.2 Markings Packaging material and/or containers shall bear the manufacturer’s name and product identification.
4.3 Simulated Wind Uplift Resistance Ratings Assemblies evaluated using this standard shall be assigned a simulated wind uplift resistance rating. The assigned rating shall be the maximum uplift resistance pressure for which the assembly meets all criteria when tested in accordance with the appropriate test method for the type of roof assembly under consideration. (See Paragraph 5.1.2 for an exception). Simulated wind uplift resistance ratings shall be stated in 15 lbs/ft 2 (0.7 kPa) increments.
4.4 Roof Assembly Component Requirements
4.4.1 All fasteners used to secure roof insulations, membranes and other components to the roof deck shall be capable of being installed with the recommended equipment without damage to any of the components.
4.4.2 Fasteners shall be the proper length to assure penetration through the deck (if applicable) or to meet recommended minimum embedment lengths.
4.4.3 When a steel deck is utilized, fasteners shall penetrate through the top flange of the deck.
4.4.4 Test samples shall be permitted to cure under laboratory conditions for a period not to exceed 28 days.
4.4.5 All adhesives shall be applied in accordance with the manufacturer’s written instructions and at their recommended application rates.
4.4.6 Appropriate safety precautions, the need for proper ventilation, and use of special equipment when using adhesives, hot asphalt, heat welding or open flames shall be observed.
5 PERFORMANCE REQUIREMENTS 5.1 General Simulated wind uplift resistance ratings shall be determined using the specific test procedure shown below for the particular type of roof assembly being evaluated. 5.1.1 The Simulated Wind Uplift Pull Test Procedure (see Appendix B) shall be used to evaluate roof assemblies where all components are fully adhered, heat welded or hot mopped with asphalt to each other and to structural or lightweight concrete and for such assemblies where the roof cover or insulation is adhered or mopped with hot asphalt to the roof deck or insulation using ribbons of adhesive or hot asphalt spaced less than or equal to 12 in. (305 mm) on center.