What the Calculator Covers
This calculator assesses a screw loaded across its section in an aluminium connection. It uses the screw diameter and selected resistance basis to compare the applied force with the available shear resistance.
Typical Inputs
Enter the applied shear force, screw diameter, number of screws where relevant, selected resistance basis and the applicable partial factor.
EN 1999 Aluminium Connection Context
Screw shear is one component of the connection assessment. Also consider screw tension and pull-out, bearing, spacing, edge distance, local sheet behaviour and the fabrication details required by the project.
Diameter-Derived Shear Area
The tool uses screw diameter to derive the shear 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 shear check can be reviewed clearly. The output is for preliminary engineering review and should not replace a full connection design by a qualified engineer.
Practical Use
Use this check when reviewing EN 1999 aluminium screw shear resistance, screw shear capacity, or a quick shear check for fasteners in aluminium members or sheets.
Frequently Asked Questions
What is screw shear in an aluminium connection?
Screw shear checks whether the screw has enough resistance for a force acting across the fastener section in an aluminium connection.
What inputs are usually needed for aluminium screw shear?
Typical inputs include applied shear force, screw diameter, number of fasteners where relevant, and the resistance factors used by the design basis.
Is screw shear the same as screw pull-out?
No. Screw shear checks force across the screw section, while screw pull-out checks withdrawal resistance from the supporting aluminium material.
Is screw shear the only check needed?
No. Screw tension, pull-out, bearing, spacing, edge distance, local sheet resistance, combined actions, and project detailing may also need to be reviewed.
Engineering content is prepared and maintained by VitraLab Engineering. Worked examples show how the current calculator treats a defined case; they do not replace project-specific verification.