Friday, October 14, 2011
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
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