Punching Shear
Summary
Punching Shear - is a mode of failure in concrete slabs caused by an applied load. In an industrial warehouse this will typically occur under a concentrated point load, such as racking or mezzanine columns.
Technical Information
When designing a slab to TR34 4th Edition punching shear capacity is checked in accordance with Eurocode 2. The slab design is checked at the face of the loaded area and at the critical perimeter. The check at the critical perimeter typically governs the design check.
Due to the low percentages of reinforcement in a ground supported slab the shear capacity is typically that of plain concrete. The percentages required are beyond the upper limit of TR34.
The enhancement of steel fibres to the shear capacity of a slab in TR34 4th Edition is based on the RILEM guidance. But with a reduction of 50% to the applied RILEM values.
Enhancement of the shear capacity should not be taken from macro-synthetic fibres.
Related Definitions
Live Storage System , Plate Dowel , De-Bonded Dowel , Shear Stress , HoneycombingResources
The Concrete Society: Technical Report 34; 6.4, 7.8, 7.10, 8.7.1. The Concrete Society: Technical Report 34, Appendix F
1. BS EN 1992: 6.4, 9.4.3, 11.6.4.
RILEM: Test and design methods for steel fibre reinforced concrete, Vol 36, Issue 262, 2003, pg.560-565.
https://face-consultants.com/reinforcement-of-concrete/
Please share this definition:
