Nice job, I agree about the anchor length, deeper is better if you have the concrete. I think any thread lubricant can mess with torque values (lube decreases torque because easier to stretch bolt) but you used logic, i.e. not crushing the crap out of the washers.
Thank you. Lubricated threads mess with the torque specs, for sure. Ive found instructions (working in the engine world), that specify wet or dry threads, so it must be a measurable difference between the two. I figured I had reached the proper torque, seemed like a good stopping point.
The anchors should have the mushroomed section about center of concrete thickness. Deeper isn't better. Need to match fastener length to concrete thickness. The provided anchors are perfect for a 6" slab.
@@marktolman6037 I probably should have been more specific...not knocking what you did, but clarifying for "viewing public" that if they have a 6" concrete slab, which is generally minimum specified thickness for common 9-10k two post lifts, the included anchors are the most appropriate length. Appreciate the video.
Gotcha. Thanks. Yes, I'll tend to agree. The lift manufacturers know what's acceptable, and the anchors they included would have been fine. They spend alot on money on research and development, product testing etc. For me, I like to go overkill whenever possible. If I can do what I feel is an improvement, I will.
I'm not sure I followed your logic there. You installed the longer anchors, and on one of them you hit a piece of rebar or something and it would not go any further. And then you said its a great thing you chose longer anchors because if that happened with a short anchor, you'd be screwed. You're saying that if the rebar happened to be 2 inches under the surface, you would not be able to hammer in the short anchors far enough because they would hit it. But then somehow you would be able to hammer the longer anchors in deeper? If the rebar would be in a place to interfere with a short anchor, it would also block the long anchor.
To summarize, a 10" anchor that hits rebar near the bottom of its depth is still biting into more concrete than a 6" anchor installed to it's full depth (without hitting rebar).
This is a great video, thanks for taking the time to put it together 👍
Absolutely. Glad you liked it
Nice job, I agree about the anchor length, deeper is better if you have the concrete. I think any thread lubricant can mess with torque values (lube decreases torque because easier to stretch bolt) but you used logic, i.e. not crushing the crap out of the washers.
Thank you. Lubricated threads mess with the torque specs, for sure. Ive found instructions (working in the engine world), that specify wet or dry threads, so it must be a measurable difference between the two. I figured I had reached the proper torque, seemed like a good stopping point.
Where is your service area? We need to move a lift from old shop to new location
The anchors should have the mushroomed section about center of concrete thickness. Deeper isn't better. Need to match fastener length to concrete thickness. The provided anchors are perfect for a 6" slab.
Correct. I have roughly 12-13" of concrete beneath the lift columns.
@@marktolman6037 I probably should have been more specific...not knocking what you did, but clarifying for "viewing public" that if they have a 6" concrete slab, which is generally minimum specified thickness for common 9-10k two post lifts, the included anchors are the most appropriate length.
Appreciate the video.
Gotcha. Thanks. Yes, I'll tend to agree. The lift manufacturers know what's acceptable, and the anchors they included would have been fine. They spend alot on money on research and development, product testing etc. For me, I like to go overkill whenever possible. If I can do what I feel is an improvement, I will.
I'm not sure I followed your logic there. You installed the longer anchors, and on one of them you hit a piece of rebar or something and it would not go any further. And then you said its a great thing you chose longer anchors because if that happened with a short anchor, you'd be screwed.
You're saying that if the rebar happened to be 2 inches under the surface, you would not be able to hammer in the short anchors far enough because they would hit it. But then somehow you would be able to hammer the longer anchors in deeper? If the rebar would be in a place to interfere with a short anchor, it would also block the long anchor.
To summarize, a 10" anchor that hits rebar near the bottom of its depth is still biting into more concrete than a 6" anchor installed to it's full depth (without hitting rebar).
Did you install over any expansion cracks?
No, my slab was not deemed big enough for an expansion crack when it was installed.
How heavy was those arm?
If my memory serves me right, the long arms were around 120 lbs. and the short ones around 85 lbs.
So you have a 9" slab? haha
I dug deeper holes where the lift was going to go before the concrete was poured. Under the lift is about 12". 6" everywhere else.