ICC-ES AC386
Full Name
ICC-ES AC386 – Acceptance Criteria for Fiber-reinforced Magnesium-oxide-based Sheets
Scope
ICC-ES AC386 outlines the acceptance criteria for fiber-reinforced magnesium oxide (MgO) based sheets used as interior wall and ceiling sheathing, exterior sheathing, and underlayment in construction.
The scope of AC386 includes:
- Materials: it specifies the requirements for the composition and properties of the MgO-based sheets, including the type and amount of fibers, binders, and other additives, ensuring their suitability for various applications.
- Physical properties: it details the testing methods and acceptance criteria for evaluating the physical properties of the sheets, such as dimensions, density, flexural strength, and water resistance.
- Fire resistance: it addresses the fire resistance requirements for MgO-based sheets, specifying the minimum fire ratings for different applications, such as wall and ceiling sheathing.
- Durability: it assesses the durability of the sheets, including their resistance to moisture, mold growth, and other environmental factors, ensuring their long-term performance in building applications.
- Installation: it provides guidelines for the proper installation of the MgO-based sheets, including fastening methods and joint treatment, to ensure their structural integrity and weather resistance.
- Quality control: it establishes a quality control program for manufacturers to ensure that the sheets consistently meet the requirements of the acceptance criteria, including regular testing and inspections.
The AC386 acceptance criteria are used by manufacturers to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their MgO-based sheets comply with the applicable building codes and standards.
Resources
Keywords
magnesium oxide; fiber-reinforced; sheet; sheathing; acceptance criteria; interior; exterior; wall; ceiling; underlayment; density; flexural strength; water resistance; fire resistance; mold resistance; fastening; joint treatment; building code; standard; evaluation report