Supporting a weight from concrete ceiling

[whiteyfisk]

Somewhat Random question, im a Chemical by trade and so this isnt my area:

Im looking to install a hook in an exposed concrete ceiling that is capable of supporting a person's weight (plus some swinging around so obviously a large safety factor on an average person's dynamic load is needed).

What's the best way to go about this? My first thought was a single, large sleeve anchor. However Ive been advised that using a wood beam, anchored to the concrete via sleeve anchors at several points along its length, with a single hook installed in the wood beam (for supporting the weight), is the best way to go. This ensures that the weight is spread across several anchor points into the concrete, which im told is prone to 'crumbling' (though i dont know if i believe it). The logic is that a single sleeve anchor could be anchored into defective concrete and pull out whereas 4 or 6 sleeve anchors would be much more likely to be OK. The wood is apparently less of an unknown - i know of hooks designed for wood that are suitable to support a person.

Is the use of a beam with several concrete anchoring points correct? If so, instead of a beam, could a steel 'cross' be used (weight supporting hook in the middle, with each tip of the cross being anchored into the concrete)?

The concrete is in a new residential development, i dont have drawings but im lead to believe its 6" thick. I could potentially get drawings from the city, im not sure.

Again civil is not my area so forgive any strange assumptions, etc. Help is appreciated, thanks

 

[whiteyfisk]

"alright i'll get drawings from the city and go from there, thanks!"

 

[jayrod12]

Am I going to specify drill willy nilly if asked? No, I would provide proper direction to determine the location of a core and go from there.

My comment was merely indicating that if someone were to do that, i.e. drill a hole and clip a strand, I likely wouldn't crap my pants about it. And that's based on what I've gathered from talking with pre-cast designers.

 

[bimr]

If drilling a single 1/2-Inch bolt in the ceiling will cause the floor to collapse, there is a problem with the design. One would think there should be some redundancy in the design.