Exposed Tension Bolts

[Jeffrey R. Pope]

Originally Posted by ekartal

Never seeing these anchors in residential before, I assumed that's they were for post tension. I didn't even start report yet.

Reinforcing perhaps, but PT is very unlikely. . .

I'll explain more if needed after my inspection. Gotta go. . .

[Barry Adair]

Too cut down on confusion for some this is the exposed end of a partially protected post tension tendon.
The majority of our foundations are PT and we often come across grout pop out or absence.
These should always be written up when seen in this or worse condition.

[Erol Kartal]

Let's say they are just bolts and about 2'' is exposed. Is that something to write up? If they're bolts the ends would have to be exposed no?

[Jeffrey R. Pope]

I wouldn't be too concerned with bolts sticking out of a slab, other than the tripping hazard they may present.

[Kenton H. Shepard, CMI]

Originally Posted by jpope

Personally, I've never seen, or heard of, tension-rods being used in residential applications. If these are permanent (and actually in tension), they should be protected from corrosion.

Tension rods were first used by a company called Dwidag, now known as DSI. In early development, tension rods were drilled or inserted into hillsides and used as a temporary means of anchoring shoring prior to concrete placement.

The concept evolved into all types of cables, rods and other PT systems.

Jeff, do you have any suggestions for sources for inpectors wanting to educate themselves further?

[mjones6]

Erol,
I would recommend they be sealed. Rust will cause the metal to expand and possibly cause a crack in the slab.

[David P. Valley]

Originally Posted by kshepard

Jeff, do you have any suggestions for sources for inpectors wanting to educate themselves further?

http://www.hgtvpro.com/hpro/pac_ctnt...&videoid=63298

http://www.post-tensioning.org/info_whatispt.asp

http://www.concreteconstruction.net/...ticleID=366219

http://www.dywidag-systems.com/uploa...sioning_us.pdf

[David P. Valley]

Originally Posted by mjones6

Erol,
I would recommend they be sealed. Rust will cause the metal to expand and possibly cause a crack in the slab.

I agree.

[ldapkus]

Erol,
Pre-cast foundations use bolts to connect sections. This one is under construction in Westmont.

[Barry Adair]

Slab post tension info also endorses NACHI MB bottom of page

[Jeffrey R. Pope]

Originally Posted by kshepard

Jeff, do you have any suggestions for sources for inpectors wanting to educate themselves further?

David and Barry provided some pretty good links with information.

I don't have the "formal" education (theory) with regards to this stuff, but I have many, many years of hands-on experience with PT systems. I worked for Dywidag and DSI as an Ironworker, back in the day. . .