Log and Timber Connections

Reinforcing notched beam with ASSY Plus VG's

2012-01-26T08:19:00.000-08:00

Producing ASSY Structural Wood Screws/Self Tapping Wood Screws

2012-01-13T07:39:00.000-08:00

Punching into raw shape

cutting to length
head pre-shaping
final shaping with AW-drive and label

Pinching of the screw tip

no cutting process
ASSY Plus tip for wood screws
Pias-tip for sheet metal drilling screws

Rolling on the thread

no cutting process when rolling on the thread

Hardening

The first and foremost used procedures in the production process of a screw are heat treatment processes for case hardening, tempering and annealing. The structure of the alloy is converted to ensure the required mechanical features.

Depending on the carbon content the screw is heated up to a certain temperature which is kept for an extended period of time. Thereby the microstructure is converted and an increase of hardness is achieved through a subsequent quenching in oil.

The now glass-hard (brittle) screw cannot be used in the field yet. In a second process called annealing it is heated up once more. During this process the high hardness decreases and the tenacity improves considerably.

Galvanizing

Zinc coating for corrosion protection
Layer thickness 5µ-12μ
Example: blue cremated or yellow zinc coated

Wood-Concrete-Composite Slab

2012-01-05T07:00:00.000-08:00

http://swg-produktion.web7.serverdienst.net/573.html?&L=3

A wood-concrete-composite is a connection between supporting timber beams and a concrete slab mounted on them. A rigid connection is achieved with shear connectors or screws which transfer shear forces between beams and slab. Wood-concrete-composite floors are utilized when large beam spacing’s or spans must be bridged and high pay loads must be carried after retrofitting the ceiling. This bonding is deemed to be the ideal solution for increasing the load-carrying capacity and stiffness of ceiling systems.

ASSY Self Tapping Structural Wood Screws receives European Technical Approval

2011-12-20T07:28:00.000-08:00

European Technical Approvals

Customer Loves ASSY Structural Wood Screws

2011-11-10T09:25:00.000-08:00

ASSY Plus VG Self Tapping Wood Screws drilled into Canadian Douglas Fir Glulam

2011-10-14T06:49:00.000-07:00

2011-10-11T07:50:00.000-07:00

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

ASSY Plus VG Fully Theaded Self Tapping Wood Screws

2011-08-21T06:48:00.000-07:00

Wedge Washers

2011-08-08T06:14:00.000-07:00

The application of self-tapping wood screws in wood-to-wood connection systems and as reinforcement has been done many times in the past decade. The use of self tapping wood screws in steel-to-wood connection systems however has been limited because proper bearing of the screw head, especially for screw angles other 90 degrees has been a concern. CNC machinery was often needed to provide countersunk pre-drilled holes in steel plates for 45° or 30° angles. Our 45° and 30° wedge washer was specially designed to provide a more cost efficient solution for this problem.

Advantages:
No more need to pre-drill steel plates at 45° and 30°
Simply pre-drill at 90°
Only basic machinery required

http://www.my-ti-con.com/data/technical-approvals/Angle%20washer%2045%20degree.pdf

http://www.my-ti-con.com/data/technical-approvals/Angle%20washer_Maik.pdf

The test facility for steel, wood and brick at the University of Karlsruhe (TH) was assigned to investigate the applicability of the angle washer for steel-to-wood connections. The angle washer shall transmit forces between an inclined screw (screw-in angle 45°) and the connected steel plate.