OK To Bend A StrongTie Sheet Metal Hanger Connector? - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 10-11-2011, 08:58 PM   #1
Join Date: Oct 2011
Posts: 2
Rewards Points: 10

OK To Bend A StrongTie Sheet Metal Hanger Connector?

This question is about the advisability of modifying (or "hacking") a StrongTie sheet metal hanger connector for a unique application.

SITUATION -- I'm using a StrongTie LUS24Z, which is used to hang 2X4's from a main beam, and I'd like to attached these 2X4 hanger connectors on vertical 4X4 posts. This is for a temporary small structure with fabric walls and a very light roof, single story.

PROBLEM -- Here's my problem: Attaching the connector to the 4X4 post results in nails being driven in very close to the edge of the 4X4. So it is unsatisfactory as the nails may split the wood and/or not have much holding power.

SOLUTION -- It would be nice to move the connector from the center of the post to the side. This is possible as follows: Bend one of the side flanges 90 degrees so it is now flat! Now we have a "new connector", which can site nicely on one edge of the 4X4. And one flange has screws going straight in to the 4X4, no longer near the edge. With the other "hacked" flat flange, the screws are also more to the middle of the 4X4 -- although these screws are of course 90 degrees from the other screws.

QUESTION ON STRENGTH -- The load requirements of this temporary structure are very low -- much, much lower than the rating of the connector. The load is basically a 10 foot Spruce 2X4 between two posts, a light fabric wall and some diagonal strapping for stability (likely the strapping creates some load on the connector). From my shop class in school where we bent lots of sheet metal, it seems to me that flattening out one flange so the connector will fit the application, should not be a problem. Especially given the very low loading. I am not askng for a definitive answer, just what you think of bending as described and how much this might decrease the load capacity of the connector.

THE EXPERIMENT -- Hammering the flange flat is easy enough, and the result seems quite strong. But perhaps there are micro cracks I can't see that could only be detected with X-Rays. The bend action was only a single time in one direction, so metal fatigue would not apply?

SUMMARY QUESTION -- Is it OK to bend a sheet metal wood construction connector to fit the application? This question is not about engineering -- please assume the resulting new connector is fine from an engineering perspective for loads and stress and strains etc. The question is about the ductility of the sheet metal and whether a one-time bend is acceptable in low load situations.

Thanks for any advice or insights!


Gordo Burgess is offline   Reply With Quote
Old 10-11-2011, 10:34 PM   #2
Bud Cline's Avatar
Join Date: Mar 2006
Posts: 10,705
Rewards Points: 558

Someone with some engineering expertise will come along and tell us both why we are idiots but in the meantime I would say: "YES YOU CAN!" The load is basically one of "shear-forces" on the fasteners not necessarily on the hanger and under the circumstances I don't see a problem.

Okay "shields up" !!!


Bud Cline is offline   Reply With Quote
Old 10-12-2011, 05:06 AM   #3
Join Date: Oct 2011
Posts: 2
Rewards Points: 10



Thanks! I appreciate your reply. I take it you don't think that bending the connector is going to substantially weaken it -- at least for the load, which is quite low. I didn't think so either.

Gordo Burgess is offline   Reply With Quote
Old 10-12-2011, 01:34 PM   #4
Tizzer's Avatar
Join Date: Jul 2010
Location: Richmond Va.
Posts: 422
Rewards Points: 470

Bending hangers always passed framing inspection here.
Tizzer is offline   Reply With Quote
Old 10-12-2011, 07:31 PM   #5
Join Date: Jul 2008
Location: Canada (s/w ON.)
Posts: 2,294
Rewards Points: 1,000

I built a shed roof over my patio and the rafters were supported by a beam. I used Simpson hurricane clips to fasten the rafters to the beam.
The clips on the outside rafters would have projected out beyond the ene of the beam, so I CUT the clip in half.
The inspector had no concern about this mod. and the job was passed on the first inspection.
Wildie is offline   Reply With Quote
Old 10-12-2011, 07:55 PM   #6
Civil Engineer
Join Date: Mar 2009
Location: Boston
Posts: 5,686
Rewards Points: 4,952

You can get away with virtually anything on Simpsons because they are generally way beyond the required strength under normal loading conditions. This is because they can take a lot of nails, almost always in shear, and this makes for strong connections. In your case, you say the loads are low, so I would not worry at all. However, just to be clear, bending a Simpson certainly voids the warranty, and definitely weakens the metal, so should not be done in cases where you are planning to load the bracket close to its design strength, either from dead load, or from potentially unexpected live load (high wind, impact, flood water etc.).


Daniel Holzman is offline   Reply With Quote

framing connectors

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best place to buy sheet metal and lumber? jk333 Building & Construction 6 02-25-2009 09:22 AM
Cutting in Bubbagump Painting 21 11-04-2008 09:23 PM
Tape vs. Sheet metal screws alvanos HVAC 7 03-25-2008 01:26 PM
grounding pole building sheet metal? borderbuster Electrical 2 07-08-2007 02:11 AM
Attaching Roof to side of home joe3534 Roofing/Siding 1 04-29-2007 09:54 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1