Concrete Footer Questions - Forums

Topic starter

Apr 8, 2023

Hi Folks,

I had two 16" concrete footers poured in my backyard, and placed bolts in the concrete using a plywood template to get the spacing right for a steel pier.

Questions:

1. How long should I keep the plywood template on top and keep the concrete covered? I've had it on for a week.

2. It will take me several months of weekends for me to build the observatory around the piers. Should I keep them covered to avoid the bolts rusting or is it better to let the concrete be exposed to air?

Thanks,
Ben

Well Written Engaging

Bruce Donzanti

Apr 8, 2023

You can certainly remove the plywood template by now to allow the concrete to fully dry. When I did mine, I used galvanized nuts and bolts to prevent rust.

Well Written Respectful

drblevy13

Topic starter

Apr 8, 2023

OK great thank you; yes I used galvanized nuts and bolts too so that should help.

Steve Solon

Apr 8, 2023

Certainly agree with Bruce - the template can be removed now. Exposure to air is key to allowing the concrete to ferment and harden. I removed the plywood template after 2 days, although this was in July, and the temperature was very warm. You should still be fine.
- - Steve

Bob Lockwood

Apr 8, 2023

I had two 16" concrete footers poured in my backyard, and placed bolts in the concrete using a plywood template to get the spacing right for a steel pier.

Just to be on the safe side, you did use L type bolts right. If not, you may want to start over. A regular bolt will not stay in the concrete for long.

drblevy13

Topic starter

Apr 8, 2023

Yes that's exactly what I used

Robert Gillette

Apr 9, 2023

You’re ready to build. FYI, I used straight, half-inch stainless steel threaded rods, with several nuts on each one for the concrete to grip. Ten years and it’s all still solid as a rock, which it is.

CS, Bob