[TheForge] Hammer foundations

Sun Aug 10 08:52:01 2003

Anyone have any rubber or conveyor belting?

Ralph, so you don't even have the concrete under your hammer as a 
separate piece from the rest of the slab. Sounds like a good way to go. 
How do you attach the hammer to the floor?

We're having a local contractor put up the building, I will make sure 
they do a good job compacting.

Thanks,
Steve

Ralph Sproul wrote:

>         Hi Steve,   I think your friends's treadle hammer might crack a
> driveway that would be 1 - 1 1/2" thick of hot top.........but I don't think
> it would touch a 7 1/2" concrete slab.  A rubber pad under it would help
> considerably with shock applied directly to the crete.  If you question it,
> the plate you mention to spread the load would be cheap insurance to cut the
> lbs per sq inch the hammer would transfer to the floor.
>         Talking of rubber pads - that's how I'd deal with the air hammer
> also.  I've had my air hammer (50 lb Kinyon clone) on the 5 1/2" thick
> concrete floor in my shop with no problems(for five years now).  One thing
> out here in Maine you want to do is make sure any new gravel under the floor
> is WELL compacted.  Having the gravel settle under your floors is the
> fastest way to split them if using a hammer on the floor.  Don't skimp on
> renting a compactor before pouring your floor would be my advice in the
> construction of your barn.
>         If you intend to put a mechanical hammer in and need a footing like
> you mention with the threaded rod and pipe into the footer, let me know.  I
> can send you pictures of what Eric Ziner did at his shop up on Deer Isle,
> Maine.  It keeps the shock isolated from the floor and makes for a removable
> foundation system for other hammers in the future.  Pretty clever, but you'd
> need to plan ahead before pouring your floor........or you'll be cutting out
> a section, and 7 1/2" is pretty thick to cut out if it sets for a while.
> 
> Ralph
> 
> ----- Original Message -----
> From: "Steve Smith" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, August 10, 2003 7:40 AM
> Subject: [TheForge] Hammer foundations
> 
> 
> 
>>I get a small part of the barn we're having put up, about 300 sq. feet.
>>It is being built with a floating slab, 7 1/2" thick. I need to consider
>>an air hammer and a treadle hammer.
>>
>>Treadle hammer:
>>A friend of mine put his TH in the driveway with no pad. The drive is
>>cracking and chipping under the anvil end. Clearly a pad is a good idea;
>>how large of a footprint does a TH need? Mine is on the small side, and
>>I'm wondering if I should put a metal plate under, then a pad or if just
>>a pad will do. The base on mine is about 12" wide 5/8" thick, with two
>>6" ears at the anvil end.
>>
>>Air Hammer:
>>The yet unfinished air hammer will be about 40 pound head weight, self
>>contained variety. I used to have a 25 pound Little Giant, which I
>>mounted per recommended foundation plans. For those who aren't familiar,
>>  the recommended approach has the mounting bolts made from threaded rod
>>which ties into the rebar, and runs up through pipe sleeves so the ends
>>of the rod have some give. While I think this approach makes good sense,
>>I've just moved and many of my shop tools aren't easily set up (not
>>having a shop...). Does anyone have experience with simpler methods of
>>mounting?
>>
>>Thanks,
>>Steve Smith
>>
>>_______________________________________________
>>http://mailman.qth.net/mailman/listinfo/theforge
>>theforge mail list group photo site is
>>http://www.photoaccess.com
>>Login:  [email protected]
>>password:  anvil
>>___________
>>
>>
>>
> 
> 
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  [email protected]
> password:  anvil
> ___________
> 
> 
> 