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- Definition
- 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.
- Performance Requirements
- 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.
- Manufacturer Qualifications:
- Manufacturer shall be a third party witnessed facility, qualified under ASTM-5456, and licensed to produce Emtek under Patent #7,137,226.
- Factory mark each piece of Emtek with Allowable Design Load Identification and Manufacturing Facility name. Place mark on surfaces in conspicuous manner.
- Quality Standard:
- Product shall be produced in accordance to the Quality Assurance program outlined in ASTM 5456
- All Product shall be proof loaded to 150% of stamped design load
- Hardware Properties:
- All steel hardware shall be Grade A36 or higher as identified by the hardware supplier
- All cable hardware shall have rating tag attached to the hardware
- Adhesive Properties:
- 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.
- Design Values
- 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 bA
In2I
In4S
In3MA
K-FtVA
K1 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
- All Emtek 31F product shall meet the following design properties as defined in ASTM 5456