Hollow core

[longisland]

Hi,
Is there any way to design a hollow core without using finite element?

 

[Ron]

Yes...they are designed as simply supported beams with analysis based on per foot of width or based on section properties provided by the supplier.

 

[DaveVikingPE]

PCI publishes the "PCI Manual for the Design of Hollow Core Slabs" that has a lot of design examples. Check 'em out at

http://www.pci.org/.

The book costs $80 - which I think is steep, though I have a copy at my desk right now...

 

[JAE]

Agree with above...but do any of you agree with me that Hollow Core is a truly horrible structural system.....

It's difficult to produce openings in the floor/roof without adding beam.

It's difficult to adequately tie the HC to walls and meet ACI development criteria (without using a vast array of embedded plates).

It's difficult to alter once in place should the owner want additional openings, etc.

I could go on but I'm just finishing up a large HC project (the design/build contractor's choice not mine) and I HATE the system with a passion.

 

[jheidt2543]

JAE I must disagree with your opinion of precast hollow core plank systems. Just like any other material, it can be just the item needed when used in the right applications. As a floor or roof system, it can provide a quick work platform on a jobsite as a building goes up. Yes, just like any other material it has some drawbacks (it is heavy and holes can sometimes be a problem), but none that I consider any more of a problem than other materials might have. For speedy, safe and fire resistive construction of basement areas and low multi-story buildings it is a great product to have in a designer's arsenal.

No, I don't work for a precaster, but I do know a good product when I see one.