Gun Safes

[Bucksnort1]

Does anyone have experience with anchoring a gun safe to a post tensioned concrete slab?

[shooterdownunder]

Best bet would be to talk to a builder or structural engineer.

[wwblevins]

Is this an apartment building or a condo where the floor is a common element?
Any intention of wall/corner anchors in addition?

[Skans]

I would treat it as an ordinary concrete slab. This is not the same thing pre-tensioned concrete.

[danco]

I would treat it as an ordinary concrete slab. This is not the same thing pre-tensioned concrete.

If you are not a Structural Engineer, I would not give such advice. (If you are a Structural Engineer, you would already know better...)

To the OP: Your post-tensioned slab is still a prestressed element, and cutting prestressing tendons could potentially lead to a catastrophic failure. DO NOT BLINDLY DRILL INTO THE SLAB.

If you are the property owner, hire a Structural Engineer, licensed in the state where the building is located, and ask his advice. If the building's as-built drawings are available, it may be possible to evaluate the floor without the need for extensive testing. A Pacometer test may be needed to locate reinforcement within the slab.

If you are a tenant in the building, forget it. The odds of convincing the owner to hire a Structural Engineer to determine whether/where you can drill for anchors are not in your favor.

[FAS1]

I would use something like this.

The HDI-P anchor allows for a shallow embedment of 3/4", meeting the embedment depth requirements for post-tension concrete.

https://www.concretefasteners.com/di...in-anchor.aspx