Lifts ?

[ahowudoin]

Originally Posted by monza

Was this a regular type garage? (2 X 4 construction) How much work was that? Been thinking about it.

Yes, it is/was a truss roof. I talked to my uncle who is a carpenter/contractor and he told me how to do it. Pretty easy and I did it by myself. If you want more info or pictures let me know.

[Sideshow]

Originally Posted by ahowudoin

Yes, it is/was a truss roof. I talked to my uncle who is a carpenter/contractor and he told me how to do it. Pretty easy and I did it by myself. If you want more info or pictures let me know.

yes please post some info and pictures on that. I was thinking of doing it. thanks in advance.

[clill]

I was working on my race car today and had it on my 4 post with the jack like Jody posted holdong up the rear end while I had the rear wheels off and it is so easy. To recommend a 2 post to the home user seems wrong. How many home users know the proper lift points on cars ? How many home users know how thick their slab is ?

[ahowudoin]

Originally Posted by clill

I was working on my race car today and had it on my 4 post with the jack like Jody posted holdong up the rear end while I had the rear wheels off and it is so easy. To recommend a 2 post to the home user seems wrong. How many home users know the proper lift points on cars ? How many home users know how thick their slab is ?

I Do and I know. I use a 2 post all day at work. That is why I put a 2 post in at home. I do alot of side work and to try and do timing belts on front wheel drive cars or front axles is a pain on a 4 post. 4 post are good for storage,alignments or oil changes and brake jobs. I have even had problems doing exhaust on our 4 post.And as for as as home user not knowing proper lift points, I have seen a few roll off 4 posts when somebody forgets to put it back in park or the ebrake doesn't hold.

[BonzoHansen]

Originally Posted by clill

I was working on my race car today and had it on my 4 post with the jack like Jody posted holdong up the rear end while I had the rear wheels off and it is so easy. To recommend a 2 post to the home user seems wrong. How many home users know the proper lift points on cars ? How many home users know how thick their slab is ?

Charlie, these guys are not typical home users. If they can't set up a lift, well.... Slab thickness is a legit concern but I am sure there are ways to find out, or cut a hole & pour - I'd probably do that anyway for piece of mind to make sure it is deep enough and strong enough concrete. I've seen cars fall off lifts & it is not nice. But I don't see either being a deal breaker here.

I totally see reasons for both types, no doubt, and would never fault anyone's decision. But if I could only have one gimme a 2 post. Now, if I had room for 2, lol....

Scott-

[Snap50]

Originally Posted by BonzoHansen

Charlie, these guys are not typical home users. If they can't set up a lift, well.... Slab thickness is a legit concern but I am sure there are ways to find out, or cut a hole & pour - I'd probably do that anyway for piece of mind to make sure it is deep enough and strong enough concrete. I've seen cars fall off lifts & it is not nice. But I don't see either being a deal breaker here.

I totally see reasons for both types, no doubt, and would never fault anyone's decision. But if I could only have one gimme a 2 post. Now, if I had room for 2, lol....

Scott-

Another consideration that many won't realize is that house builders rarely compact the soil when they backfill inside the foundation. The soil under the slab along the foundation walls generally settles a bit through time and there is often a void between the slab and the soil. I have seen a void of about 4" in one job that I investigated.

The condition is often unknown because very little load is applied along the edges of the floor when the vehicles are out in the parking areas.

Due to cramped spaces I would guess that many a lift has some of their posts bear near the edges of the floor, right where the soil has settled, thereby causing cause for concern. If/when that piece of concrete breaks under the load, it will be an alarming if not dangerous situation.

It would be good for potential home users to try to determine if the post base locations are on sound bearing by sounding or coring a hole in an adjacent similar location.

[syborg tt]

It would be good for potential home users to try to determine if the post base locations on sound bearing by sounding or coring a hole in an adjacent similar location.

I agree this does sound like a really good idea

[Snap50]

Originally Posted by Sideshow

yes please post some info and pictures on that. I was thinking of doing it. thanks in advance.

Sideshow and anyone else contemplating altering their building structure;

DO NOT alter roof trusses based on advice from a carpenter or contractor!

The design and analysis of trusses is very complex and unless a professional engineer has provided the alteration design for you, you are likely to create a safety and liability hazard for yourself and all subsequent owners of the property.

The zoning laws of you're community might even prohibit making that kind of alteration without a PE design. Ask your Building Inspector.

NO contractor or carpenter is knowledgeable enough to know how trusses are designed unless he is a drop out from the structural engineering profession..

Any fool can use a saw and hammer and butcher the structure and say it was (physically) easy, but it may be a time bomb waiting to collapse.

Don't take this lightly. There are lawyers standing in line just waiting for this opportunity.

[68protouring454]

Originally Posted by Snap50

Sideshow and anyone else contemplating altering their building structure;

DO NOT alter roof trusses based on advice from a carpenter or contractor!

The design and analysis of trusses is very complex and unless a professional engineer has provided the alteration design for you, you are likely to create a safety and liability hazard for yourself and all subsequent owners of the property.

The zoning laws of you're community might even prohibit making that kind of alteration without a PE design. Ask your Building Inspector.

NO contractor or carpenter is knowledgeable enough to know how trusses are designed unless he is a drop out from the structural engineering profession..

Any fool can use a saw and hammer and butcher the structure and say it was (physically) easy, but it may be a time bomb waiting to collapse.

Don't take this lightly. There are lawyers standing in line just waiting for this opportunity.

i have scene plenty of engineers screw things up.... just because its drawn on paper doesn't mean it always works, and you dont have to be an engineer to modify a simple roof truss, just have some common sense,
think a fabricator designed the new fords so that when it needed a head gasket you had to remove the cab? doubt it

[Snap50]

Originally Posted by 68protouring454

i have scene plenty of engineers screw things up.... just because its drawn on paper doesn't mean it always works, and you dont have to be an engineer to modify a simple roof truss, just have some common sense,
think a fabricator designed the new fords so that when it needed a head gasket you had to remove the cab? doubt it

Engineers do make mistakes, but atleast they are not from ignorance.
If you have a sealed drawing from an Engineer, and it falls down and ruins your car or kills your child, he is responsible and pays the price or goes to jail, Not You.
Do you drill your own teeth? Do you do your own heart surgery? Those only involve a grinder or a knife.

You DO have to know how to do a statics analysis to modify a truss.