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    • Safeguard
    • Fire Treated Wood Products
    • PO BOX 922 Wading River, NY USA 11792
    • B1046-1
    • B1046-1
    • January 11, 2013
    • February 11, 2015
    • N/A
    • ASTM D5516 “Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures”
      ASTM D6305 “Standard Practice for Calculating Bending Strength Design Adjustment Factors for Fire-Retardant-Treated Plywood Roof Sheathing”
      ASTM D5664 “Standard Test Method for Evaluating the Effects of Fire-Retardant Treatments and Elevated Temperatures on Strength Properties of Fire-Retardant Treated Lumber”
      ASTM D6841 “Standard Practice for Calculating Design Value Treatment Adjustment Factors for Fire-Retardant-Treated Lumber”
      ASTM E84

      “Standard Test Method for Surface Burning Characteristics of Building Materials”, extended to 30 minutes duration.

      ASTM E2768

      “Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)”

       
    • Safeguard FR Pressure Treated Plywood

      Safeguard FR Pressure Treated Lumber

      Species: Southern Yellow Pine (SYP)

    • The following outlines Safeguard FR Pressure Treated Plywood product ratings:

      Table 1: Allowable Roof Sheathing Loads per ASTM D6305 (SYP)

       

      Plywood Performance Category

      Untreated Roof/

      Subfloor Span rating

      Untreated FbKS1(a)(b) Treated Roof Sheathing Maximum Load (psf)1,2

      Treated Floor Sheathing Span

      (inches)

      SPAN (inches) Climate Zones

      Zone 1A Zone 1B Zone 2
      15/32″, 1/2″ 32/16 351 24 40 48 61 16
      19/32″, 5/8″ 40/20 625 24 61 80 107 20

      32 34 45 60
      23/32″, 3/4″

      48/24

      818

      32 38 55 78 24

      48 17 24 35
      1. Roof sheathing maximum load (w)= (TF)(C)(FbKS)(DOL)/L2 (Live load plus dead load)
      2. Fb– based on values from Table 3 of APA Plywood Design Specification (January 1997)
      3. KS – based on Un-sanded Panel values from Table 1 of APA Plywood Design Specification (January 1997)
      4. All loads are based on two span condition (C = 96 in/ft) with panels 24 inches wide or wider, strength axis perpendicular to supports.
      5. Duration of Load (DOL) equals 1.25 for Zone 1A and 1.15 for Zone 1B & 2.
      6. The 15/32” or ½” performance category is limited to performance rated 3-ply or 4-ply.19/32” or 5/8” performance category is limited to performance rated 4-ply or 5-ply.  23/32” or 3/4” performance category is limited to performance rated 5-ply or 7-ply.
      7.  
      8.  

      Table 2: Surface Burning Characteristics per ASTM E84 (Extended)/E2768 (SYP)

      Plywood Thickness

      Flame Spread Index

      (FSI)

      Smoke Developed Index

      (SDI)

      Flame Front
      1/2” – 3/4″ <25 <25 < 10.5 feet

       

      Lumber Ratings:

      The following outlines Safeguard FR Pressure Treated Lumber product ratings: 

      Table 3: Treatment Adjustment Factor per Climate Zone per testing to ASTM D6841 (SYP)

       (Applicable at service temperatures up to 150°F (68°C)

       

      Structural Property Service Temp. up to 100°F Roof Framing
      Climate Zone 1A Climate Zone 1B Climate Zone 2
      Extreme fiber stress in bending, Fb 0.93 0.93 0.93 0.93
      Tension parallel to grain, Ft 0.97 0.97 0.97 0.97
      Compression parallel to grain, Fc 1.00 1.00 1.00 1.00
      Horizontal shear, Fu 0.99 0.99 0.99 0.99
      Modulus of elasticity, E 1.00 1.00 1.00 1.00
      Compression perpendicular to grain, Fcz 0.95 0.95 0.95 0.95
      Fasteners/Connections 0.90 0.82 0.89 0.90

       

      Table 4: Surface Burning Characteristics per ASTM E84 (Extended)/E2768 (SYP)

      Flame Spread Index

      (FSI)

      Smoke Developed Index

      (SDI)

      Flame Front
      <25 <25 < 10.5 feet

       

       

    • The materials, products or systems listed in this directory have been qualified to bear the QAI Listing Mark under the conditions stated with each Listing. Only those products bearing the QAI Listing Mark are considered to be listed by QAI. No warrantee is expressed or implied, and no guarantee is provided that any jurisdictional authority will accept the Listing found herein. The appropriate authorities should be contacted regarding the acceptability of any given Listing. Visit the QAI Online Listing Directory located at www.qai.org for the most up to date version of this Listing and to validate that this QAI Listing is active. Questions regarding this listing may be directed to info@qai.org. Please include the listing number in the request.

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