These precast products were franchised for years. Some are still in business like Pittsburgh Flexicore. But they no longer do 6".
http://pittsburghflexicore.com/
Mid States Flexicore has load tables for 6":
http://www.msprecast.com/downloads/loads/6x24/6X24_all.pdf
Call them up, they can help you out with the old stuff too. Currently, Flexicore is listed on page 2-36 of the PCI Design Handbook, 6th Edition.
Regards, Harold Sprague
> Date: Mon, 16 Nov 2009 16:32:52 -0500
> From: design@hodgsoneng.ca
> To: seaint@seaint.org
> Subject: Cottage Renos - Concrete Floors
>
> List,
>
> I hope somebody can help me. I have a job renovating a 1951 "cottage"
> on Lake Erie (more like a bunker). It was built with 10" block bearing
> walls and 6" block partitions. The floors consist of "Flexicore"
> concrete planks which appear to be 6" deep x 12" wide with hollow cores
> in the centre.
>
> If anybody knows anything about these planks, I'd appreciate if they
> could provide with any info or resources. The product may have been
> American as the original owner and builder was from Buffalo, NY.
>
> Gary
>
>
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