What are good ground anchors?

[king nero]

I want to fasten some things in concrete, this is the situation:

I've got a wooden shed with a roof on the side, very similar to a carport.
The roof on the side was originally supported by wooden poles.
I have made metal columns as a replacement, these are each welded on 1/4" baseplates.
These need to be secured to the concrete slab.

The slab in on that place maybe 4" thick (mind, there will be no cars parked there, the roof is just to protect a bench from the rain).

One of the columns will serve for an fence gate to be mounted on.

Will the type on the top right do (size of the screw/bolt: 3/8" or similar)

Or what would be an appropriate way to mount the baseplates/columns?
I prefer not to work with chemical anchors and all-threaded rods, however I'm no expert on this...

Thx for your opinions !

 

[mambo]

i would say that would be fine. be sure they get a good bite, if not try a sleeve anchor

 

[djkeev]

None of the above. The wedge bolt / stud is a wonderful thing but for what you describe use a pin anchor. This outfit calls it a hit anchor, fast easy and you can leave the post in place, just drill a hole, insert anchor, hit, done.

http://www.confast.com/products/metal-hit-anchor.aspx

Dave

 

[1ownerT]

Use quick bolts. When considering potential up lift on the shed roof from high winds and that you will be attaching a gate to one of the post, you need a substantial anchor.

http://www.homedepot.com/webapp/wcs..._mmc=shopping-_-googlebase-_-D25X-_-100325166

I would use 3/8", four per base plate.

 

[BD1]

The hit anchors that djkeev posted are quick however to remove whatever they are fastening you must chisel or grind off.

The quick bolts that 1ownerT posted are quick and just as easy as hit anchors and you can unbolt them. A advantage of the quick bolt is if your baseplates are not completely flat due to welding the bolt nut will flatten it out when you tighten.

Depending on the size of the baseplate will determine how many to use. You don't want to crack the concrete. You can always add more .

 

[Alchymist]

These in the appropriate size:

 

[king nero]

Wedge anchors it'll be... thanks everybody for your suggestions !