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f.

Panel complies with Type X requirements ASTM C 1396 Standard Specification for Gypsum Board.

g.

Surface Abrasion Resistance: [0.059 inch, maximum] [0.009 inch] when tested in accordance with ASTM D 4977 Standard Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion.

h.

Indentation Resistance: [0.100 inch, maximum] [0.132 inch] when tested in accordance with ASTM D 5420 Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact)

i.

Soft Body Impact: [195 ft-lbf, minimum] [210 ft-lbf] when tested in accordance with ASTM E 695 Standard Method for Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact Loading.

j.

Mold/Mildew Resistance: score of 10 when tested in accordance with ASTM D 3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

4.

High Impact Gypsum Board With Enhanced Mold And Mildew:  Type X, ASTM C 1396.

a.

Classification: Level 3 - Heavy Duty in accordance with ASTM C 1629 Standard Classification for Abuse-Resistant Nondecorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels.

b.

Core: Fire resistance rated gypsum core, with additives to enhance mold/mildew resistance, surface indentation resistance and impact resistance, moisture and mold resistant.

c.

Surface paper: Abrasion resistant, 100% recycled content moisture/mold/mildew resistant paper on front, back and long edges

d.

Embedded fiberglass mesh

e.

Long Edges: Tapered

f.

Thickness:  [5/8 inch] [1/2 inch]

g.

Panel complies with requirements of both ASTM C 1396 Standard Specification for Gypsum Board, Type X.

h.

Surface Abrasion Resistance: [0.010 inch, maximum] [0.009 inch] when tested in accordance with ASTM D 4977 Standard Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion.

i.

Indentation Resistance: [0.050 inch, maximum] [0.114 inch] when tested in accordance with ASTM D 5420 Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact).

j.

Soft Body Impact: [300 ft-lbf, minimum] [540 ft-lbf] when tested in accordance with ASTM E 695 Standard Method for Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact Loading.

k.

Hard Body Impact: [150 ft-lbf, minimum] [160 ft-lbf] in accordance with ASTM C 1629 Standard Classification for Abuse-Resistant Nondecorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels.

l.

Mold/Mildew Resistance: 10 when tested in accordance with ASTM D 3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber.

2.8

LEAD-LAMINATED PLYWOOD

A.

Lead-Lined Plywood:  PS 1 Structural grade, Grade C-C or better, sanded; APA span rated to suit application.

1.

Thickness:  [5/8 inch] [3/4 inch] [specify thickness]

2.

Fire-Retardant-Treated Plywood:  Where indicated on Drawings, provide fire-retardant-treated plywood complying with performance requirements in AWPA C27.

a.

Type:  Interior Type A, unless otherwise indicated.

2.9

STRUCTURAL LAMINATED STEEL PLATE

RADIATION PROTECTION13 49 00 - 7

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