This isn't intended to provide top end lateral resistance to that degree. Mind you once you build the pergola structure the shape of it will provide a great degree of rigidity. Most people use our 6x6 post anchor for surface mounting 6x6 pergola posts on wood decks or concrete etc. That works quite well and looks very clean and keeps the posts drier.
If you hit a rock you simply reverse your impact wrench and back it out and try another location a few inches over. If you have a beam you are trying to support you must move it along the length of the beam position. If you are using a spike system and a sledge hammer and you hit a rock it is a big effort to try to remove it and then start over again.
Doubt it would work in that material. It is designed for soil not rock. Big enough rocks will stop it dead same for any helical system unless maybe you have a huge auger and hydraulic drill system like in an industrial application. This is for light weight structures not supporting homes and things like that.
We have just started selling this product this year and its available at our online store for now. Thanks for your interest.
Its only available direct from our site so far.
they don't go deep enough to get below the frost line, also what if you hit a rock and can't go any deeper ??
This isn't intended to provide top end lateral resistance to that degree. Mind you once you build the pergola structure the shape of it will provide a great degree of rigidity. Most people use our 6x6 post anchor for surface mounting 6x6 pergola posts on wood decks or concrete etc. That works quite well and looks very clean and keeps the posts drier.
Great system. Where can you purchase them.
what if you have bed rock or big rocks under it?
If you hit a rock you simply reverse your impact wrench and back it out and try another location a few inches over. If you have a beam you are trying to support you must move it along the length of the beam position. If you are using a spike system and a sledge hammer and you hit a rock it is a big effort to try to remove it and then start over again.
Any idea if this will work in Hawaiian lava rock? Is this approved by the International Building Code?
Doubt it would work in that material. It is designed for soil not rock. Big enough rocks will stop it dead same for any helical system unless maybe you have a huge auger and hydraulic drill system like in an industrial application. This is for light weight structures not supporting homes and things like that.
Can these be used for a shed?
Yes they are often used for supporting a platform that a shed rests on.