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instructions with Project conditions and materials clearly identified or detailed for each required system.

  • 4.

    SYSTEM REQUIREMENTS

    • 1.

      Performance Requirements: Fabricate and install systems as indicated. but not less than the following conditions:

Gypsum board partitions:

  • 1.

    Standard systems: Maximum deflection of l/240 of partition height.

  • 2.

    Systems to receive water resistant gypsum board or backer board:

Maximum deflection of l/360 of partition height.

3. Cavity shaftwall systems: Withstand minimum positive and negative pressure of (5, 7.5, 15) psf.

4. Fire Resistance Ratings: Where fire resistance classifications are indicated, provide materials and application procedures identical to those listed by UL or tested according to ASTM E119 for type of construction shown.

    • 5.

      Acoustical Ratings: Where sound ratings are indicated, provide materials and application procedures identical to those tested by manufacturer to achieve Sound Transmission Class (STC) scheduled or indicated in accordance with ASTM E90.

  • 5.

    QUALITY ASSURANCE

  • 1.

    Reference Standards:

  • 1.

    Applicable requirements of ASTM C754 for installation of steel

framing.

2. Install gypsum board in accordance with applicable requirements and recommendations of Gypsum Association GA 216, "Recommended Specifications for the Application and Finishing of Gypsum Board", except for more stringent requirements of manufacturer.

    • 3.

      Apply acoustical sealant in accordance with applicable requirements of ASTM C919.

  • 6.

    DELIVERY, STORAGE AND HANDLING

  • 1.

    Delivery:

    • 1.

      Deliver material to site promptly without undue exposure to weather.

    • 2.

      Deliver in manufacturer's unopened containers or bundles, fully

identified with name, brand, type and grade.

  • 2.

    Storage:

  • 1.

    Store above ground in dry, ventilated space.

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