Tuesday, October 11, 2011



 Installation recommendations for ASSY screws


 Installing 8 mm ASSY screws
Lower density timbers (Spruce-Pine-Fir and Northern Species)
   -No pre drilling required for d = 8 mm screws up to 580 mm length

Higher density timbers (Hem-Fir, D-Fir-Larch)
   -No pre drilling required for d = 8 mm screws up to 480 mm length
   -Pre drilling suggested for d = 8 mm and l > 480 mm

Pre drill with ≈ 0.7*d (5.5 mm or 3/16”) for 20% of screw length
Old growth timbers and aged wood (Douglas Fir and Hemlock)
   -No pre drilling required for d = 8 mm screws up to 400 mm length
   -Pre drilling suggested for d = 8 mm and l > 400 mm

Pre drill with ≈ 0.7*d (5.5 mm or 3/16”) for 25% of screw length
Engineered wood products (LVL, PSL)
   -No pre drilling required for d = 8 mm screws up to 340 mm length
   -Pre drilling suggested for d = 8 mm and l > 340 mm

Pre drill with ≈ 0.7*d (5.5 mm or 3/16”) for 25% of screw length
Suggested Machinery
   -Use low rpm drill with high torque
   -Do not use impact drills
   -Use AW drive bits for all ASSY screws
   -Use drill with torque clutch

During installation
   -Do not stop drill during installation. ASSY screws shall be installed without stopping in one run
   -Wear safety glasses and safety gear
   -Secure stand on solid ground is required
   -Use drill with clutch when installing screws in steel to wood connections. Sudden torque increase may       cause injuries if no proper torque regulating drill with clutch is used!

Note:
d= screw diameter in mm
l = screw length in mm
Pre drilling may reduce withdrawal capacity of screw. Consult with structural engineer before pre-drilling.
For more info go to My-Ti-Con.com
Installation recommendations for ASSY screws
Installing 10 mm ASSY screws
Lower density timbers (Spruce-Pine-Fir and Northern Species)
   -No pre drilling required for d = 10 mm screws up to 530 mm length
   -Pre drilling suggested for d = 10 mm and l > 530 mm

Pre drill with ≈ 0.7*d (7 mm or 1/4) for 20% of screw length
Higher density timbers (Hem-Fir, D-Fir-Larch)
   -No pre drilling required for d = 10 mm screws up to 440 mm length
   -Pre drilling suggested for d = 10 mm and l > 440 mm

Pre drill with ≈ 0.7*d (7 mm or 1/4) for 20% of screw length
Old growth timbers and aged wood (Douglas Fir and Hemlock)
   -No pre drilling required for d = 10 mm screws up to 360 mm length
   -Pre drilling suggested for d = 10 mm and l > 360 mm

Pre drill with ≈ 0.7*d (7 mm or 1/4) for 25% of screw length
Engineered wood products (LVL, PSL)
   -No pre drilling required for d = 10 mm screws up to 320 mm length
   -Pre drilling suggested for d = 10 mm and l > 320 mm

Pre drill with ≈ 0.7*d (7 mm or 1/4) for 25% of screw length
Suggested Machinery
   -Use low rpm drill with high torque
   -Do not use impact drills
   -Use AW drive bits for all ASSY screws
   -Use drill with torque clutch

During installation
   -Do not stop drill during installation. ASSY screws shall be installed without stopping in one run
   -Wear safety glasses and safety gear
   -Secure stand on solid ground is required
   -Use drill with clutch when installing screws in steel to wood connections. Sudden torque increase may   cause injuries if no proper torque regulating drill with clutch is used!

Note:
d= screw diameter in mm
l = screw length in mm
Pre drilling may reduce withdrawal capacity of screw. Consult with structural engineer before pre-drilling
Installation recommendations for ASSY screws
Installing 12 mm ASSY screws
Lower density timbers (Spruce-Pine-Fir and Northern Species)
   -No pre drilling required for d = 12 mm screws up to 480 mm length
   -Pre drilling suggested for d = 12 mm and l > 480 mm

Pre drill with ≈ 0.7*d (8.5 mm or 5/16”) for 20% of screw length
Higher density timbers (Hem-Fir, D-Fir-Larch)
   -No pre drilling required for d = 12 mm screws up to 400 mm length
   -Pre drilling suggested for d = 12 mm and l > 400 mm

Pre drill with ≈ 0.7*d (8.5 mm or 5/16”) for 25% of screw length
Old growth timbers and aged wood (Douglas Fir and Hemlock)
   -No pre drilling required for d = 12 mm screws up to 320 mm length
   -Pre drilling suggested for d = 12 mm and l > 320 mm

Pre drill with ≈ 0.7*d (8.5 mm or 5/16”) for 25% of screw length
Engineered wood products (LVL, PSL)
   -No pre drilling required for d = 12 mm screws up to 300 mm length
   -Pre drilling suggested for d = 12 mm and l > 300 mm

Pre drill with ≈ 0.7*d (8.5 mm or 5/16”) for 25% of screw length
Suggested Machinery
   -Use low rpm drill with high torque
   -Do not use impact drills
   -Use AW drive bits for all ASSY screws
   -Use drill with torque clutch

During installation
   -Do not stop drill during installation. ASSY screws shall be installed without stopping in one run
   -Wear safety glasses and safety gear
   -Secure stand on solid ground is required
   -Use drill with clutch when installing screws in steel to wood connections. Sudden torque increase may cause injuries if no proper torque regulating drill with clutch is used!

Note:
d= screw diameter in mm
l = screw length in mm
Pre drilling may reduce withdrawal capacity of screw. Consult with structural engineer