Larry Kroh

Can An Open Web Joist Fill the Bill for Multi-family Floor Assemblies?

Can an open web joist that is a rising star in residential floor framing fill the bill for Multi-Family floor assemblies? The answer to our question is a BIG YES! TRIFORCE® open joist will meet or surpass your floor framing requirements of Multi-Family housing. It will provide you with a solid feeling floor system, fire … Continued

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Cantilevers: Best practices with open-joist construction

Used for centuries in many different ways, cantilevers as a construction device were first recognized in 19th Century bridge designs.  But they gained significant notice in architectural use when Frank Lloyd Wright unveiled his iconic “Fallingwater” commissioned residence.  There the cantilever was not just a structural means to an end but also a dramatic design … Continued

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The Interesting World of Joist Repairs and Proper Strongback Installation

1) Joist Repair Needed Recently, a TRIFORCE® representative was called to a construction site because the GC had discovered a cracked bottom chord on one of the installed TRIFORCE® joists (see photo above). The cause of the damage was a mystery and no one was taking responsibility. What could have happened? First… we know what … Continued

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TRIFORCE® Wood Joist Installation Tips

Barrette Structural Distribution offers a downloadable version of the TRIFORCE® Installation Guide accessible at any time on its website. Available in English, Spanish and French, the guide is designed to answer jobsite questions and is a natural complement to the TRIFORCE® Specifier Guide. While we’re on the subject of installation, let’s take this opportunity to … Continued

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How to Fix a Damaged Open Web Floor Joist?

You’re a builder visiting your jobsite the day after the trades have finished their installations, and you immediately realize something is wrong. The brand new joists you carefully installed have been cut, drilled or otherwise mangled! Welcome To Your Worst Nightmare! Plumbers, electricians and HVAC contractors have left their marks, altering your floor system so … Continued

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Open Web Joist = Open Concept

We live in a world dominated by the need for “open” living spaces. New homes are designed for such and old homes are remodeled to remove walls. When we gather as family and friends, open concept design allows us to remain engaged at all times. Obviously, it’s the structure of a building that makes it … Continued

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The China (Cabinet) Syndrome: Floor Vibration & Rattling Dishes

A 1979 Oscar-nominated movie with the title “China Syndrome” starred Michael Douglas and Jane Fonda. The pair, acting as broadcast reporters, were filming a news story in a nuclear energy facility when they felt an unusual alarming vibration. Something was wrong. Real life builders and developers too often hear the phrases “Something is wrong with … Continued

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Finger Joints: Better Connectors

The fact that TRIFORCE® joists are assembled with “finger joints” was certainly breakthrough news in the world of engineered building components. But the breakthrough was about the application for joist manufacturing rather than the actual joinery process itself.  Versions of finger-like joinery have been responsible for strong things for thousands of years. The Egyptians and … Continued

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To Trim or Not to Trim

“Why should I use a floor joist that is trimmable when I can install a made-to-length truss immediately?” Because it’s not a perfect world! Just ask the framer who, after finishing his morning coffee, opens the bundle of trusses, hoists the first one onto the foundation and discovers it’s too short by 6 inches. Ask … Continued

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Strongbacks Attack Transient Oscillations!

Science fiction title? How about the technical description of how strongback bridging works. Transient oscillations don’t represent the serious danger that hostile extraterrestrials might pose, but they do result in discomfort and uneasy feelings in humans. Transient oscillations are vibrations in a floor system, caused by footfalls or rhythmic motions (such as a washing machine … Continued

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*Note/mention: The designer and/or general contractor of the project or building must ensure the accuracy of the technical information discussed in this blog over the years and always rely on the most up-to-date product’s requirements, specifications and installation guidelines available online on this website, and the applicable codes and standards.