ICC-ES AC385

Full Name

ICC-ES AC385 – Acceptance Criteria for Special-purpose Sprinklers Used with Fixed Glazed Assemblies to Provide an Alternative to a Fire-resistance-rated Wall Assembly

Scope

ICC-ES AC385 outlines the acceptance criteria for special-purpose sprinklers used in conjunction with fixed glazed assemblies (non-operable windows) as an alternative to fire-resistance-rated wall assemblies. These sprinklers are designed to protect the glazed assembly and prevent the spread of fire through the opening.

The scope of AC385 includes:

  • Sprinkler types: it specifies the types of special-purpose sprinklers that are eligible for this application, including their design, water distribution patterns, and thermal sensitivity.
  • Glazing materials: it identifies the types of fixed glazed assemblies that can be used with these sprinklers, considering their fire resistance and compatibility with the sprinkler system.
  • Performance: it outlines the testing methods and acceptance criteria for evaluating the performance of the sprinkler system in protecting the glazed assembly, including fire tests to demonstrate the system’s effectiveness in preventing fire spread.
  • Installation: it provides guidelines for the proper installation of the sprinklers and glazed assemblies, ensuring proper coverage, spacing, and water supply.
  • Limitations: it addresses the limitations of this alternative, such as restrictions on the use of penetrations in the glazed assembly and the need for approval from the authority having jurisdiction (AHJ).

The AC385 acceptance criteria are used by manufacturers of sprinkler systems and glazed assemblies to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their products comply with the applicable building codes and standards.

Resources

Keywords

sprinkler; special-purpose sprinkler; fixed glazed assembly; fire resistance; fire-resistance-rated wall; acceptance criteria; water distribution; thermal sensitivity; glazing material; fire test; installation; building code; standard; evaluation report

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