Titen HD Screw Anchor vs. epoxied bolt

[morris102]

I am retrofitting corner hold downs into a concrete slab. How would the holding strength compare between these two methods?

 

[UcfSE]

As long as you meet the required capacity, it doesn't make much difference on paper. It may come down to client preference since the epoxy bolt is likely to cost more for installation, or you may have one you feel better about using than the other. For me, it is less a question of holding strength than one of reliability and confidence in proper installation. For myself, I would choose the epoxy bolt and require special inspection.

 

[whyun]

To my understanding, Titen Screw Anchors are not intended to be used as a seismic anchor to hold down a structural element. Intended uses include fastening equipment above or below concrete filled deck and fastening equipment on CMU walls. In addition, Titen Screws come in pre-designated lengths, so you are limited in the amount of embedment. Verify with the manufacturer whether screw anchor can be used for your situation before relying on the ICC rated capacities.

 

[morris102]

These are corner hold downs (Simpson PHD5-SDS3)

http://sketchup.google.com/3dwarehouse/details?mid=b80cfaa2e948de7ab6408c3b551e20d8

being used in a garage addition on a sill plate in a gulf coastal area in the 120-130 wind zone.

 

[DTGT2002]

I have been pleased with the installation and performance of the Titen HD anchors. That said, I have been using 5/8" x 6" anchors, no closer than 12" from the edge of slab for "temporary" time spans of 7 days to a year with satisfactory performance. The labor force installing them has been relatively to low skilled and installation has been pretty easy. The same crews have had a hellacious time installing an epoxy system for horizontal rebar dowels.

With your application, the capacities of either system will be drastically reduced by you edge distance, if I am understanding the sketch correctly.

I would say this is a time to consult your contractor or installer, judge their comfort level with either system and review the size of fastener needed and the edge distances required.

One note further, the installation process does seem to remove some of the galvanized coating from the anchors (no suprose there). So if the anchor would be subject to sufficient moisture - underwater or similar - it could pose a threat over time.

Best of luck,

Daniel Toon

 

[DTGT2002]

http://www.simpsonanchors.com/pdf/fliers/F-SAS-THD4HD06.pdf

Check this too!

 

[dik]

I've used the titen bolts, and at earlier times screwbolts, and have had excellent results. I seem to recall that they have seismic resistance also.

corrosion shouldn't be too much of a problem since the galvanizing bridges over scuffed areas... also fastener is still surrounded by concrete with high pH.

Dik