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Re: Hollow Core Plank Recommendation

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Rich,
I did a precast plank job for office loading, and I ended up with a 12" light precast plank with a minimum 3-1/2" topping.  It pushed the limits of the design.  I remember vibration was a concern because we could make the units work for the expected loading.  good luck.

On Jan 10, 2008 5:40 PM, Rich Lewis <seaint04(--nospam--at)lewisengineering.com> wrote:

It has been a long time since I did a precast plank job.  I will need to get old paper drawings out for details because it was pre-CAD.  I now have a plank project for a dormitory style building.  I'm trying to remember the span limits for plank.  I know the manufacturer's have load tables, but I'm trying to remember the practical experience limits and it is not coming back to me. 

 

I have a 35 ft. span.  I'm thinking that it should most likely be a 10" plank, even though I can find load tables for 8" plank that say they work.

From practical experience, what should I limit spans to for 8", 10" and 12" plank, both topped and untopped? 

 

Thanks for your insight.

 

Rich




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David Topete, SE