Insulation, Radiant and Vapor Barriers - RatSlab / Vapor Barrier

hey all...

currently i have a dirt crawlspace under 1/4 of my house....
am planning to fill it in with concrete, but am just curious as to what type of gravel i should put down with the 6 mil v/b membrane?

thanks,
--j

Just for clarification, are you going to replace the wood framed floor above

this crawlspace with a slab or are you just going to pump concrete into

the crawlspace ?

thanks for the reply.

actually i just poured the slab saturday.
it is / was a dirt floor in the crawl space.
the perimeter of which is cmu.

so the slab itself has no structural functionality.

i wound up putting down a 6 mil black v/b. some,
some mesh and some sand to hold it in while i slopped around in the ready mix.

i poured about 5 inches of 2500 into the 10x20 area to bring myself up where i needed to be level with the basement wall.

here on the island it ran me $435......

be good.