Does this method require the deep excavation (maybe coincidentally) shown in the video with a basement to get below a (~50") frost line? Or would the piles properly support reinforced concrete on grade (beam or slab)? I know that's pretty vague. But I guess I mean the best soil conditions and no frost protected shallow foundation insulation.

@Technometalpost

6 жыл бұрын

In the video, they were installing piles under a residence with full basement, so the footing was deep enough in the ground to be protected from the frost. We can also install piles under a grade beam or concrete slab, but in these cases, because they are not deep enough, the concrete foundation needs to be protected from the frost by another way. The most common way to protect the foundation is insulation or void form. The piles themselves are always installed in way that the helix is below frost line to be protected from the frost, but the structure above needs to be protected too. Another solution would be to build minimum 6 inches above the ground on the piles.

Impressive

I always hit stones when I dig out for fence posts, which require me to break them or remove them. Sometimes I get stones that weight 50 to 100 lbs. What do you do when you hit stones? Will the technopost break through? Do you have to change the post location?

@Technometalpost

4 жыл бұрын

Normally, we just power through loose rock (the size of a basketball or smaller). The installation machine generates sufficient torque for the helix to push rocks out of the way as it turns. Sometimes, the installer can actually steer the helix around a rock, then use the machine’s boom to pull the pile back into plumb. If we hit a large rock below the frostline, the pile is parked on top of the rock and load- tested. Assuming it passes the load test - it usually does - we can be confident the pile will never move. If it doesn’t pass the load test, the pile will have to be installed in a different spot. On critical jobs, a soil test has often been done before we get to the site, so we’ll know where there’s ledge or bedrock. When we encounter a large rock above the frostline, it can be drilled and the pile’s shaft pinned to the rock. Occasionally, however, there is so much rock that helical piles just won’t work.

Doesn't the metal eventually rust?

@Technometalpost

2 жыл бұрын

Hello! For most corrosive soil installations, hot-dip galvanization and the extra thickness provides long-term protection for foundation helical piles. In extreme corrosive installations (ex. saltwater), Techno Metal Post has specially developed technologies using the principles of cathodic protection to ensure that even helical piles that are installed in corrosive environments are protected for the long term. Our system defuses an electric current produced by an external rectifier, thereby ensuring continuous protection of the buried steel structure.

What was so special about this build that it required this?

@Technometalpost

Жыл бұрын

Hello, Helical Piles can be used in situations where the soil under the concrete foundation is unstable or insufficiently strong to support the load of the structure. Screw piles can also be used to reinforce existing foundations that have been damaged or weakened by extreme weather conditions or ground movements.