Punching Shear Calculator
Check punching shear capacity at slab-column connections. Calculate critical perimeter, shear stress, and reinforcement requirements.
Enter column and slab details to check punching shear
IMPORTANT DISCLAIMER
This calculator provides PRELIMINARY ESTIMATES ONLY and is intended for planning and budgeting purposes. Results should NOT be used for final structural design or construction without verification by a licensed Professional Engineer (PE) or Chartered Engineer (CEng).
By using this tool, you acknowledge that:
1. All calculations are indicative and may not account for site-specific conditions, load combinations, or local code requirements.
About This Calculator
This punching shear calculator verifies the structural adequacy of flat slab-column connections against punching failure. In UAE high-rise construction where flat slab systems are common, punching shear is a critical check that prevents sudden catastrophic failure. Calculate shear stresses at critical perimeters (d/2 from column face) and determine if shear studs or drop panels are required.
When to Use This Calculator
- Designing flat slab systems for multi-story buildings
- Checking punching capacity at edge and corner columns
- Determining shear stud rail requirements
- Evaluating need for drop panels or column capitals
- Verifying post-tensioned slab connections
How to Use This Calculator
Enter column dimensions
Input column size and whether interior, edge, or corner
Specify slab properties
Enter slab thickness, effective depth, and concrete strength
Input loading
Enter factored shear force and any unbalanced moments
Calculate critical perimeter
Tool computes perimeter at d/2 from column face
Review capacity check
Compare applied vs allowable shear stress with reinforcement options
Typical Scenarios in UAE & Gulf Projects
Checking 300mm flat slab at 500x500mm interior columns carrying 850kN shear. Calculator shows applied stress of 1.89 MPa vs capacity of 1.42 MPa. Design requires SSR shear stud rails extending 450mm from column face to achieve adequate capacity.
Edge column 400x400mm with unbalanced moment from cladding loads. Critical perimeter reduced on edge side. Calculator determines γv factor of 0.4 for moment transfer and recommends 200mm drop panel to increase punching capacity.
Frequently Asked Questions
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This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: ACI 318-19 Section 22.6, Eurocode 2 Section 6.4, BS 8110