A little smaller than a B36, the B36 span was larger and carried more like 30 to 40 ton load.
Here is a Link to the B36
http://en.wikipedia.org/wiki/Convair_B-36#Specifications_.28B-36J-III.29
Hmmm, I don't think the B32 Dominator was that big, also seems too small for the B29.
Gilly