T1/T2 Silo Footprint?

What are the footprints of a T1 & T2 silo? I thought a T2 was 5x5, but not sure.
Nickk

Odd tiered silos are 6x12. Even tiered silos are 5x9

http://community.istaria.com/default.aspx?pg=structuresindustrial, industrial storage.

Umm .. aren't they, you know, round? I measured them today and came up with a 6 meter diameter for an even number, 7 meters for an odd. Yes, I allowed for the roof, which is a square on top of the silo's cylinder.

This matters to me because I am doing the graph-paper cutout low-tech CAD thing right now :).

-Levity Merrel

PS The link to the community site is nice, but I see at least one error on the site already: Silos hold vastly more bulk than is listed there, it was not updated when they got their new bulk loads.

I think the non-round dimensions came from back when silos had "feet." The feet didn't show up, even when completed, but it prevented you from packing things too close to the silo.