What This Screw Tension Calculator Helps Check
The screw tension calculator supports focused review of a screw loaded in axial tension within an aluminium connection. It is intended for quick engineering checks where screw diameter, applied tension, and tensile resistance need to be assessed before carrying the result into a wider connection design.
Typical Inputs
Common inputs include applied tensile force, screw diameter, number of screws where relevant, selected resistance basis, and the partial factor used by the aluminium connection workflow.
EN 1999 Aluminium Connection Context
Aluminium screw tension checks are normally reviewed as part of an EN 1999 connection workflow. The result should be considered alongside screw shear, screw pull-out, bearing, spacing, edge distance, local sheet behaviour, and any combined-action checks required by the project.
Diameter-Derived Tensile Area
The tool uses screw diameter to derive the tensile area used in the check. The selected diameter should match the fastener used in the physical connection detail and project specification.
Result Review
The engineering tool reports resistance, utilization, and pass/fail status so the aluminium screw tension check can be reviewed clearly. The output is for preliminary engineering review and should not replace a full connection design by a qualified engineer.
Screw Tension and Pull-out Difference
Screw tension checks the fastener tensile resistance, while screw pull-out checks the supporting aluminium material around the engaged thread. Both may be relevant for the same connection.
Frequently Asked Questions
What is screw tension in an aluminium connection?
Screw tension checks whether the screw has enough tensile resistance for an axial pull or tension force in the connection.
What inputs are usually needed for aluminium screw tension?
Typical inputs include applied tensile force, screw diameter, number of fasteners where relevant, and the resistance factors used by the design basis.
Is screw tension the same as screw pull-out?
No. Screw tension checks the screw itself, while screw pull-out checks the supporting aluminium around the engaged thread.
Can screw shear and screw tension act together?
Yes. Some connections may need combined-action review where shear and tension act together, depending on the project detail and design basis.