On 18 May 2007 09:41:44 -0700, Kiwanda wrote:

Hi-

The previous owners left us with a 9x12' slab they had poured for a
dog kennel; it happens to be in the same place I want to build a shed.
The slab is 7" deep and though it's an obvious DIY job it has held up
for 10+ Minnesota winters. Assuming I want to build an 8x12 shed on
PT sills atop this slab, what's the best way to anchor the sills?
With a new pour I'd just use bolts but I'm not sure what the best
method is in this case. FYI, we're in tornado country and do see
gusts in the 50-60 MPH range during thunderstorms or blizzards a few
times a year, so I want to make sure this shed stays put.

thanks,
kiwanda


Check some anchor bolt catalogs such as Hilti or the like. They will
explain the loads and how to install the different type bolts. I
think you will have to drill into the concrete and use a bonding agent
in the hole with the bolts set in.

You might also want to check the stability of the entire structure in
wind.