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Makes steel roof/floor deck system design easy

Steel deck, roof and floor systems designed in accordance with the SDI Diaphragm Design Method

Choice of puddle welds, screws or Hilti mechanical fasteners

Includes the latest ICC-ES AC43 performance data

Design optimization feature to produce the most cost-effective design solution

Specification of steel deck attachment solutions or creation of submittals for existing projects

Fastener estimation tool for improved cost estimation
Available to download free of charge from your local Hilti website

Technical Data

Documents & Videos


PROFIS DF Diaphragm

Choose and calculate fastenings for roof and floor decking

Hilti PROFIS DF Diaphragm software is designed to help select the optimum Hilti fastening solutions for your decking project.

Just input data - including the design method, relevant loads, deck type, support construction – and Hilti PROFIS DF Diaphragm will calculate the fasteners and systems for your project.

Improve Accuracy

Help ensure your designs are model code compliant and meet the highest safety standards. Our structural steel roof and floor decking diaphragm and uplift calculations are based on verified fastener capacities.

Increase Productivity

Complete calculations, choose a solution, generate a fastener estimation and a submittal for each scenario in one simple application for increased efficiency. 

Increase Profitability

Reducing installation time and inspection errors increases your bottom line. Our powder-actuated structural fasteners replace cumbersome, time-consuming welds for faster and more accurate fastening.


PROFIS DF Diaphragm

Comprehensive Calculations

Quickly calculate steel roof and floor decking diaphragm and uplift with a user-friendly interface and self-guided parameter specification tool. 

PROFIS DF Diaphragm

Weld to Fastener Conversion

Easily convert an existing weld design to a Hilti mechanical fastener design. 

Two people looking at desktop computer

Product Recommendation

Select appropriate Hilti screws or powder actuated fasteners with confidence from a product recommendation list based on calculated scenarios.

PROFIS DF Diaphragm

Design Reporting

Easily generate a design report, including code-compliant deck system calculations, approvals and an item list.  

PROFIS DF Diaphragm

Approval Library

Instantly access product approvals from a robust approvals library for comprehensive design and project documentation.

PROFIS DF Diaphragm

Submittal Generation

Quickly and easily generate comprehensive submittals to send for review. A built-in fastener estimation tool allows you to  easily estimate the number of fasteners for your project.

Recommended Resources

BIM/CAD Library

Access the BIM/CAD library

Decking Design Center

Visit the Decking Design Center

Ask Hilti

Visit Ask Hilti