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  1. Definition
    1. Emtek 31F: An engineered, stress-rated timber composite product assembled from selected and prepared wood laminations bonded together with adhesives with the grain of the laminations approximately parallel longitudinally.
  2. Performance Requirements
    1. Manufactured, tested and verified in accordance with AHC-TC01: STANDARD FOR INDUSTRIAL MATTING, and ASTM-5456 – Standard Specification for Evaluation of Structural Composite Lumber Products.
  3. Manufacturer Qualifications:
    1. Manufacturer shall be a third party witnessed facility, qualified under ASTM-5456, and licensed to produce Emtek under Patent #7,137,226.
    2. Factory mark each piece of Emtek with Allowable Design Load Identification and Manufacturing Facility name. Place mark on surfaces in conspicuous manner.
  4. Quality Standard:
    1. Product shall be produced in accordance to the Quality Assurance program outlined in ASTM 5456
    2. All Product shall be proof loaded to 150% of stamped design load
  5. Hardware Properties:
    1. All steel hardware shall be Grade A36 or higher as identified by the hardware supplier
    2. All cable hardware shall have rating tag attached to the hardware
  6. Adhesive Properties:
    1. Any and All Adhesives used in the manufacture of Emtek products shall comply with ASTM-2559 – Specification for Adhesives for Structural Laminated Wood Products for Use Under Exterior (Wet Use) Exposure Conditions.
  7. Design Values
    1. All Emtek 31F product shall meet the following design properties as defined in ASTM 5456

      emtek Design Properties

      Fb = 4123 psi } W/ 1.33 Load Duration Factor
      Fv = 379 psi
      E = 1.6 (10)6 psi
      Unit Section Properties
      No Size
      t x b      		 A
      In2      		 I
      In4      		 S
      In3      		 MA
      K-Ft      		 VA
      K
      1 3.5″ x 12″ 42 42.875 24.50 8.418 10.612
      2 4.5″ x 12″ 54 91.125 40.50 13.915 13.644
      3 5.5″ x 12″ 66 166.375 60.50 20.787 16.676
      4 6.5″ x 12″ 78 274.625 84.50 29.032 19.708
      5 7.5″ x 12″ 90 412.875 112.50 38.653 22.740
      A = t(b)      I = bt3      S = bt2      MA = FbS      VA = FVA  ~ ( FV lb )
      12 6 1.5 Q
      K = KIP = 1000 lbs
      MA = Allowable Moment W/1.33 Load Duration Factor
      VA = Allowable Shear W/1.33