Concrete anchors

[Royalwapiti]

Building a garage. Slab poured, walls framed. For code I need a few more concrete anchors. My spacing was messed up. What are the cheapest best option for adding 5 more anchors in various locations on my 12" wall?

Thanks

 

[matt_i]

How about best option. You don't want your building trashed by a wind event that leaves most everything else standing.

My free advice: epoxy anchors. You'll need some 5/8" threaded rod, an SDS drill (which can be rented), the epoxy tube that fits in a standard caulking tube gun, air compressor, and a "pipette" which is a rigid tube that can reach the bottom of the drilled hole and blow dust from the bottom-up. Simplest would be a ball valve and rigid ******, lets just say 1/4" NPT.

 

[LX-Markham]

For code I need....

Check with your building department. They might have restrictions on anchor types based on wind or seismic loads.

 

[tinmanwpk]

I suggest epoxy as well.

 

[Royalwapiti]

How about best option. You don't want your building trashed by a wind event that leaves most everything else standing.

My free advice: epoxy anchors. You'll need some 5/8" threaded rod, an SDS drill (which can be rented), the epoxy tube that fits in a standard caulking tube gun, air compressor, and a "pipette" which is a rigid tube that can reach the bottom of the drilled hole and blow dust from the bottom-up. Simplest would be a ball valve and rigid ******, lets just say 1/4" NPT.

In South Dakota, we don’t have hurricanes but we have some pretty gusty winds.

I have a call into my local code guy, but with the 5/8 Rod is that just any 5/8 threaded rod or something special? could I use 1/2 inch? All my L bolts are 1/2-inch.

 

[Lynden]

For my house remodel, the structural engineer specified 5/8" redhead wedge anchors with 5-inch embedment.

 

[RocketScott]

If your regular j bolts are 1/2" then the 1/2" wedge anchors should be ok. 7" would be best to get the embedment (the part of the bolt in the nut and going through the sill plate isn't considered embedded)

It's been a while since I priced it out but the difference between wedge anchors and epoxy/all thread is negligible, like a couple bucks for each anchor, if you can use the whole tube of epoxy. If you just have one or two bolts to put in you'll waste most of the tube.

Keep in mind if you are doing 1/2" allthread in epoxy you'll need a 5/8" hole. 1/2" wedge anchors go in a 1/2" hole.

The allthread doesn't need to be anything special except if you have a local code about metal touching treated wood needing to be galvanized. That's a common requirement but for some reason 99% of the foundations I frame off of have regular j bolts. I'm required to use a 3" galvanized washer but they don't care about the j bolt. I've asked the inspector and they don't really have a good answer for why they allow it.

 

[Lynden]

I have a call into my local code guy, but with the 5/8 Rod is that just any 5/8 threaded rod or something special? could I use 1/2 inch? All my L bolts are 1/2-inch.

Simpson makes retrofit bolts and adhesive for your situation. 1/2-inch bolts should be adequate.

https://www.strongtie.com/miscadhesiveaccessories_adhesiveanchoringaccessories/rfb_bolt/p/rfb

https://www.strongtie.com/products/...anchoring-adhesives/installation-instructions

Personally, I'd use 1/2-inch wedge anchors. They're cheaper and easier to install. Just make sure you're not installing them too close to the edge of the footing.

https://www.strongtie.com/mechanicalanchors_mechanicalanchoringproducts/wa_anchor/p/wedge-all

https://www.strongtie.com/mechanicalanchors_mechanicalanchoringproducts/stb2_anchor/p/strong-bolt-2

 

[BD1]

You can get 1/2'' threaded stud anchors too. Here's a sample.

https://www.globalindustrial.com/p/...MIv7m7v77-3QIVyIh-Ch2WKQ0iEAYYBCABEgJhaPD_BwE