Bearing, pull-out, shear, tension, and punching checks.
Steel and aluminium checks
Steel and Aluminium Connection Checks
Fast steel and aluminium connection checks for bolts, screws, bearing, shear, tension, punching, and pull-out workflows, with visible inputs, code basis, warnings, utilization, and pass/fail summaries.
Engineering scope
Standards and Scope
Bearing, shear, tension, and pull-out checks.
Bolt, screw, resistance, utilization, and warning outputs.
EN 1999 direction
5 checks
Aluminium Checks
Bolt Bearing in Aluminium
Single bolt bearing check with hole factors, slotted-hole notes, and countersunk thickness.
Screw Pull-out
Screw pull-out check with aluminium validity warning and visible code notes.
Screw Shear
Screw shear resistance using diameter-derived area and gamma M3.
Screw Tension
Screw tension resistance using diameter-derived area and gamma M3.
Bolt Punching
EN 1999 bolt punching shear resistance under a bolt head or nut.
EN 1993 direction
4 checks
Steel Checks
Bolt Bearing in Steel
Single and edge bolt bearing check with hole geometry and warnings.
Bolt Shear
Bolt shear strength check with area selection and grade handling.
Bolt Tension
Bolt tension resistance check with k2 handling and tensile stress area.
Screw Pull-out
Screw pull-out check with thread pitch and supporting sheet thickness.
Steel and Aluminium Connection Checks for Everyday Review
VitraLab Engineering Checks is a practical hub for common connection checks used around facade, glazing, cladding, bracket, and secondary steelwork workflows. The page brings together steel bolt checks, aluminium bolt checks, screw checks, bearing checks, punching checks, and pull-out checks in one place so an engineer can move quickly from a load or geometry question to a visible utilization result.
The aluminium tools are arranged around EN 1999 direction, while the steel tools follow EN 1993 direction. Each check is deliberately narrow: it is meant to help review a specific resistance mechanism such as bolt shear, bolt tension, bolt bearing, screw pull-out, screw shear, screw tension, or punching resistance. Final connection design should still consider the complete connection arrangement, load path, edge distances, fabrication details, support stiffness, combined actions, and project-specific requirements.
Aluminium Workflows
Review bolt bearing in aluminium, screw pull-out, screw shear, screw tension, and bolt punching checks with visible EN 1999-style assumptions and warnings. Use the aluminium bearing, screw pull-out, screw shear, screw tension, and bolt punching checks to review resistance, utilization, and visible warnings.
Steel Workflows
Review bolt bearing in steel, bolt shear, bolt tension, and screw pull-out checks with inputs grouped around practical connection design decisions. Use the steel bearing, bolt shear, bolt tension, and screw pull-out checks to review resistance, utilization, and pass/fail output.
Result Review
Check utilization, resistance, status, and limitations in the output card before carrying the result into a wider engineering judgement.
Common Questions About the Steel and Aluminium Checks
What engineering checks are available in VitraLab?
The tools cover bolt bearing in aluminium, screw pull-out, screw shear, screw tension, aluminium bolt punching, bolt bearing in steel, bolt shear, bolt tension, and screw pull-out checks for steel workflows.
Which standards are these checks based on?
The aluminium checks follow EN 1999 direction and the steel checks follow EN 1993 direction. Each tool shows the basis, assumptions, factors, and visible limitations used for that focused check.
Are these tools a replacement for full connection design?
No. They are focused component checks for preliminary engineering review. A full connection design still needs project loads, combined actions, load paths, detailing, fabrication limits, and qualified engineering approval.
Why are steel and aluminium checks separated?
Steel and aluminium use different material behaviour, resistance expressions, and code assumptions. Separate workflows keep the inputs and warnings clearer for the material being checked.
What is the difference between bearing, shear, tension, punching, and pull-out?
Bearing checks local pressure around holes, shear checks force across a bolt or screw section, tension checks axial resistance, punching checks local plate failure under a head or nut, and pull-out checks thread engagement in the supporting material.
Who are these engineering tools intended for?
They are intended for facade engineers, glazing contractors, cladding designers, and other project teams who need quick steel or aluminium connection checks during design review.