Anchor bolts missing

[Erby]

So, if you're missing anchor bolts, what's the best way to secure the house to the foundation?

[Scottpat]

Does the house have a sillplate? If so I would think straps of some type, or even something similar to what we see with manufactured homes.

Honestly, I'm not sure if I would even worry about it if you are not in a high wind or quake area. Think of all of the older homes that are just sitting on top of their foundations.

[Jerry Simon]

So, if you're missing anchor bolts, what's the best way to secure the house to the foundation?

Angle iron bolted along the bottom flange to the foundation, bolted though the upper flange to the bottom of each floor joist.

[kurt]

I use gravity and inertia on my projects. Works every time.

I'm not familiar with how anchor bolts work in seismic events; I'd imagine they make a big difference.

My experience with anchor bolts in high wind and tornado events (I've lived through 2 separate house tornado hits) is that they're superfluous.

If something had to be retrofit, I'd probably do something like Simon sez.

[mlparham]

So, if you're missing anchor bolts, what's the best way to secure the house to the foundation?

Add anchor bolts.

[Charles]

Hilti makes concrete anchors of all types.

https://www.us.hilti.com/anchors

Charles

[John Kogel]

It's an insurance issue here. No bolts, you pay more and still get nuthin back. []

[adair]

removed

[David Meiland]

Simpson has a variety of seismic retrofit stuff.

http://www.strongtie.com/products/conne ... JA-FSA.asp

http://www.strongtie.com/products/connectors/UFP.asp

[rjmiller]

Anchor bolts also allow the floor diaphragm to support the foundation wall.

Hurricanes and earthquakes may be fast, but freeze/thaw and hydrostatic forces can still ruin a building.

[aschauer82]

So, if you're missing anchor bolts, what's the best way to secure the house to the foundation?

Must older homes do not anchor bolts. I know there a few companies around here that there main function is earthquake retrofitting. So my solution if you do not anchor bolts add anchor bolts.

[hesterd]

Here is a site gives you some ideas on the retrofit. There are various anchoring solutions.

http://www.earthquakesafety.com/earthqu ... tting.html

[mcyr]

If you are afraid that the house will fly away, you might want to think of using Simpson's UFP 10-SDS3.

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[mjr6550]

I would probably use steel straps attached to the joists and to the foundation wall if the main concern was uplift. If also concerned about inward movement of the foundation walls then the steel angle approach is better, but the leg of the angle bolted to the foundation wall needs to be long enough to meet edge distance requirements for the fasteners.