Multiple solids from surfaces

Hello to all!

I'm quite new to the grasshopper world and I've been experimenting with some basic shapes and components. Right now I'm stuck in (what I sense) is a big hole... The logic is as follows: I have a triangle based pyramid that I divided into offset surfaces of each side of the pyramid. So I got as far as getting 4 data sets of trimmed surfaces into triangles each one parallel to the faces of original pyramid. What I would like to do now is to create smaller pyramids by joining the triangle surfaces resulting from the division I previously made. Maybe someone can take a look to my (messy) definition to see if it's possible to achieve what I want without scripting at all? Thank you!