Correct Strong-Tie Connection?

[ccurrins]

Are these hung correctly, without any nails?

[Kenton H. Shepard, CMI]

Yes, they appear to be correct. Those are top flange hangers, which extend over and are nailed into the top of the I-beam (which the inspector can't confirm) and they should have two nails (one per side) into the bottom chord of the abutting joist. I can't tell from the photo whether the bottom chords are nailed.

There are other situations in which an engineer will require the other holes you see to be filled, but you won't when you're looking at one of those situations without a set of plans... not your job as an inspector. The hangers had no glue installed before the joists were dropped into the hangers and so some may squeak, but that's a quality issue, not a structural issue.

I wouldn't call anything about these hangers as a defect.

[ccurrins]

Originally Posted by kshepard

Yes, they appear to be correct. Those are top flange hangers, which extend over and are nailed into the top of the I-beam (which the inspector can't confirm) and they should have two nails (one per side) into the bottom chord of the abutting joist. I can't tell from the photo whether the bottom chords are nailed.

There are other situations in which an engineer will require the other holes you see to be filled, but you won't when you're looking at one of those situations without a set of plans... not your job as an inspector. The hangers had no glue installed before the joists were dropped into the hangers and so some may squeak, but that's a quality issue, not a structural issue.

I wouldn't call anything about these hangers as a defect.

Thanks Kenton. I was pretty comfortable with the install, but not sure. I've seen similar ones that are welded at the top of steel beams. No there were not ANY nails at the bottom or any where else. I'll leave it be.


I also just found this. http://www.strongtie.com/products/installation/itt.html

[Richard A. Hetzel]

If there is a hole in the hanger, there usually should be a nail in it, and nailing should be in accordance with the manufacturer's written instructions. Nail quantities and types can affect the load-carrying capacity of the hanger. Tthe hanger manufacturer's instructions are vitally important, and should be read and understood when selecting and installing hangers.

[Brian A. MacNeish]

Originally Posted by Richard A. Hetzel

If there is a hole in the hanger, there usually should be a nail in it, and nailing should be in accordance with the manufacturer's written instructions. Nail quantities and types can affect the load-carrying capacity of the hanger. The hanger manufacturer's instructions (and beam/joist manufacturer's) are vitally important, and should be read and understood when selecting and installing hangers.

If the chords are made from a glulam product and are not solid wood, driving nails into the side of the chord flange may split the chord. IMO, the bottom of the chord would be better but couldn't find any good info on nailing rec's/practice for the glulam chords.

[Richard A. Hetzel]

The addition iin blue above is true and equally important, and is appreciated.

The video linked above shows a tab which is bent over the top of the bottom flange of a composite joist and nailed there.

But Mr. MacNeish is correct, the manufacturers' recommendations of both hanger and joist are equally important.

[Barry Adair]

Come on down...

Texas Professional Real Estate Inspectors Association ANNOUNCEMENT

[Brian A. MacNeish]

Originally Posted by badair

Come on down...

http://origin.ih.constantcontact.com...=1102228356407Texas Professional Real Estate Inspectors Association ANNOUNCEMENThttp://origin.ih.constantcontact.com...=1102228356407

TPREIA (or Simpson) seems fairly flush.........Free motel room (shared occupancy....that can be arranged!!), free breakfast and lunch !!!! Can you get me a free flight.....I'll probably join!!

[Marcel R. Cyr]

Originally Posted by ccurrins

Are these hung correctly, without any nails?

From what I can see in the pictures, these appear to be 560 series Silent Floor I-joist by Weyheuser.

The top mount hangers are not installed correctly per Manufactures installation guide.
http://www.ilevel.com/literature/TJ-4002.pdf

The hangers should hang plumb and TJI's used as headers should have backer blocks and or filler blocks to enamble the hanger to be nailed properly to provide uplift, and rotation factors that are usually set factors in the design.

I would recommend an Architectural review of this framing to see if it meets the proper installation of the design.

It appears that Manufactures recommended installation procedures might not have been followed.

I don't think it will go anywhere, but need to note it the way it is.

Hope this helps a little.

Marcel

[jkogel]

Originally Posted by mcyr

The hangers should hang plumb and TJI's used as headers should have backer blocks and or filler blocks to enable the hanger to be nailed properly to prevent uplift, and rotation factors that are usually set factors in the design.


Marcel

Thanks, Marcel. Once again, you nailed it.

John Kogel
www.allsafehome.ca

[ccurrins]

Originally Posted by mcyr

From what I can see in the pictures, these appear to be 560 series Silent Floor I-joist by Weyheuser.

The top mount hangers are not installed correctly per Manufactures installation guide.
http://www.ilevel.com/literature/TJ-4002.pdf

The hangers should hang plumb and TJI's used as headers should have backer blocks and or filler blocks to enamble the hanger to be nailed properly to provide uplift, and rotation factors that are usually set factors in the design.

I would recommend an Architectural review of this framing to see if it meets the proper installation of the design.

It appears that Manufactures recommended installation procedures might not have been followed.

I don't think it will go anywhere, but need to note it the way it is.

Hope this helps a little.

Marcel

Thanks Marcel, my impression was that it should have a backer, that open space didn't look right. But, I was not sure. You're the best.

[Barry Adair]

Just received this!

The Simpson Strongtie Class is cancelled. The hotel reservations have been cancelled but please call to confirm.

Due to hurricane Ike, the Gulf Coast contingency of inspectors would likely not be able to attend due to
gas shortage
unknown condition of home and family
power still not restored to 70% of customers (Centerpoint)

The class is in process of being rescheduled, TPREIA will notify you...if you are not able to attend alternate date, your registration money will be refunded.

There are communities of the gulf coast that are wastelands. Pray for your fellow Texans.
Regards
Mike
Mike Cothran
Texas Professional Real Estate Inspectors Association
Vice President
Greater Houston Chapter of TPREIA
Immediate Past President
TPREIA.com

[Marcel R. Cyr]

Originally Posted by badair

Just received this!

The Simpson Strongtie Class is cancelled. The hotel reservations have been cancelled but please call to confirm.

Due to hurricane Ike, the Gulf Coast contingency of inspectors would likely not be able to attend due to
gas shortage
unknown condition of home and family
power still not restored to 70% of customers (Centerpoint)

The class is in process of being rescheduled, TPREIA will notify you...if you are not able to attend alternate date, your registration money will be refunded.

There are communities of the gulf coast that are wastelands. Pray for your fellow Texans.
Regards
Mike
Mike Cothran
Texas Professional Real Estate Inspectors Association
Vice President
Greater Houston Chapter of TPREIA
Immediate Past President
TPREIA.com

Barry, were you affected by that storm where you are?

Marcel

[Jeffery L. Haynes]

As a builder I have been using I-joists for about 12 years and I love them however one must pay attention that subcontractors understand their limitations.

Some of the common problems I have found are:

1. Improper fastening (wrong nails, wrong nailing pattern etc)
2. Not utilizing backer and crush blocks as called for
3. Improper cutting (when used as rafters) and improper notching
4. Improper band boards being used or bandboard (rimboard) not bearing on foundation sill plate
5. Improper spacing and / or OSB / Plywood not sheeted correctly
6. Improper nailing patterns on almost all LVL, Glulams and Paralams
7. Trimmer joist not doubled and nailed as required
8. Insulation not installed correctly in crawlspace when I-joist are more then 16" O.C.
9. Joist web stiffners not employed were required
10. Wrong hangers being utilized, especially around LVL, Gluelams, etc.

All manufactures drop off installation instructions (usually several copies) to the jobsite as well as technical data sheets left for the code official to review or take put on file for that project............ask to see same.

Jeff

[Barry Adair]

Originally Posted by mcyr

Barry, were you affected by that storm where you are?

Marcel

McHammer,

Not anymore then normal when the weather is fair...we had wind gusts at the house of about 37mph and a few inches of rainfall over the 8th, 9th and 10th. I missed one EIFS inspection and the sellers would not give client an extension...so they walked and had another inspector for the general home inspection...I think they'll be using him and buying brick after the sellers relluctance and reading the EIFS page on my site...