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Lateral injection ports with no cracking?


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Hi Guys,

I just wanted to ask about why a foundation wall that has no apparent cracking would have injection ports laterally? I was thinking this just a case of leaks from form nails that was injected with epoxy? I wanted to ask anyone else for more info before writing it up as such.

Thanks for any input you may have :)

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Your ties are round up there? They're flat here.

If someone were using ground anchor to help the wall to resist bulging, they would likely be round at the wall end.

Marc

Hi Marc,

The ties are flat here. It's the injection ports you are looking at. I didn't see any bolts, bulging or cracking in the foundation wall.

Thanks though!

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Google "concrete snap ties" and take a look at some of the images. Looks like whoever did those walls did not bother to break off the ties after stripping the forms (or used a type not designed to break off). They're still sticking out, so they smeared some type of sealant around them.

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On 2nd look, Dave's right. The little plastic caps were installed to prevent flesh ripping, then they gooped around the ties.

I just glanced at it and didn't bother to see if they were actually injection ports.

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They look like injection ports to me. Many have a flat disk that gets epoxied to the wall and then injected into the round tube. Other than for structural repairs, urethane injections has become much more popular than epoxy.

The spacing certainly looks like they filled the form ties. I do occasionally see leaks there.

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Google "concrete snap ties" and take a look at some of the images. Looks like whoever did those walls did not bother to break off the ties after stripping the forms (or used a type not designed to break off). They're still sticking out, so they smeared some type of sealant around them.

We use snap ties that look like that here too, but they're much longer and they have a bulb or tee at the end that holds the "shoe" in place. Those rods in the picture would barely be long enough to project beyond the plywood forms, let alone leave enough room for the battens or shoe. Also, when you bend them, snap ties snap off at the bottom of a conical plug, behind the surface of the concrete. To get them to the length in the picture, you'd have to use some kind of cutting device, which would be more trouble than just bending them and snapping them off. I'm willing to bet that the things in the picture aren't snap ties.

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They are injection ports.. here are the vertical ones just a few feet further down the foundation wall. I was just wondering why?... not really "what are these?". I have banged a few hundred form ties before to know that these are not ties. I was wondering if you have seen anyone use epoxy injection for holes made from form ties before? Or is there something I am missing? This home has already surprised me with an original interior perimeter drain when the home was built (1971) as well as iron ochre.

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