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unlock greater potential with hss

Here, you’ll find everything you need to design with steel hollow structural sections (HSS). STI is dedicated to giving you the valuable tools and resources you need to bring your project to life.

Check out our HSS video to see the many resources STI offers.
HSS Webinars with Icon 500x240 1 HSS Resources

Live Webinars

Earn your PDHs and gain valuable information on designing with HSS during our live and prerecorded webinars.

HSS Webinars On Demand

Webinars On Demand

View recorded webinars on topics including HSS connections, welding, seismic considerations, AESS, and more.

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HSS Capability Tool

This tool helps specifiers and others within the supply chain locate producers of available HSS sizes.

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Access the latest sustainability resources including EPDs, articles and webinars.

HSS and WF Column Selection Guide

HSS and WF Column Selection Guide

This free guide pairs W-shapes with HSS shapes to quickly compare strength, weight, and section parameter.

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HSS Connex

This web-based software tool offers a simple way to check HSS wall thicknesses to aid in HSS connection design.

HSS Design Manuals

HSS Design Manuals

Access our series of technical HSS design manuals complete with examples, written for and by structural engineers.

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Spreadsheet Design Aids

Our four aids cover shear, moment and truss connections, and column design, ensuring your design aligns with current AISC specs.

Effective Weld Length Calculator

Effective Weld Length Calculator

Calculate the effective weld length for connections to HSS chords for various connection types.

Great American Tower at Queen City Square - featuring hollow structural sections

HSS Insider

View issues from our email series featuring technical articles, interviews with industry experts, webinars, design aids and more.

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HSS Articles

STI offers over 125 technical and peer articles on HSS topics like connection design, software tools, welding and more.

HSS Limit State Tables

Limit State Tables

Download our summary of limit states to consider for connections at HSS.

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HSS Case Studies

From stadiums and stores to bridges and museums, see how cost-efficient HSS enhanced the aesthetics of these structures.

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HSS Member Benefits

Individual and group membership includes free webinars, design tools, discounts and more.

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HSS Resource Library

Read the latest technical articles from industry experts, watch helpful videos and more.

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Measuring Tolerances

View our STI Tolerance Guide, measurements video and webinar to learn how to check tolerances.

Frequently Asked Questions


STI answers frequently asked questions on HSS connections, design, fabrication and more.

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