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DSA Punching Reinforcement

DSA Punching Reinforcement is a shear rail system approved by ICC Evaluation Service. It is mainly used to increase the punching shear capacity of elevated concrete slabs and slabs on grade without increasing their thickness.

DSA rails consist of steel double-headed DSA Studs welded to a steel shape. The steel shape guarantees the correct spacing and positioning of the studs during their installation in concrete as prescribed by ASTM-A1044. It can be applied to both top and bottom installation.

When used in elevated slabs such as reinforced concrete slabs or post-tensioned slabs, DSA Punching Reinforcement system eliminates the need for column capitals, thus reducing forming and concrete costs. Moreover, a thinner slab leads to a lower floor-to-floor height and, therefore, to a lower building height or possibly an extra floor. Besides increasing the resistance of the slab, DSA Punching Reinforcement also increases its ductility. Additional benefits of shear rails in comparison to other reinforcement systems are reduced installation time and labor costs.

Punching Reinforcement systems can also be used in foundations to reduce the thickness of footings, pile caps and slabs on grade. Other applications, such as DSA rails used as shear reinforcement in beams, walls and other concrete elements, are possible as well.

DSA Punching Reinforcement


DSA rails are dimensioned according to ACI 318-14, CSA A23.3-04 and ASTM A1044.

For dimensioning of DSA rails, we recommend our user-friendly dimensioning software Peikko Designer®, downloadable from Peikko’s Design Tools page.

Please contact our local Technical Support at any time for information or dimensioning questions.

Detailed technical information

Comprehensive product information like resistances, required supplementary reinforcement, concrete grades, limitations of use etc. can be found within the Technical Manual. Product details may be country-specific. For design, always use product information that is localized for design's destination country. Country specific Technical Manuals can be found under Design Tools -page, or from website of the country in question.

Download design tools

Peikko Designer®

Including a wide range of European design norms and several languages, Peikko Designer® has dedicated modules for:

  • Column Connections
  • Punching Reinforcements
  • Anchor Plates

The modern and intuitive user interface is based on interactive 3D graphics.

Contact us

Štefan Gavura

Product Manager

Reinforcement Systems

Mob. +421 911 250 080

Petri Suur-Askola

Business Director


Tel. +358 20 707 511
Mob. +358 40 5455575