I still have the DT drawing pinned on the wall in my shop from when i built mine, mine is a 4x8 table but they have measurements for a 5x10 also and are as such.
Table cut length 10 foot.... rails @ 144"
They dont show the overall width of the finished table except between the legs, for a 5' table according to the drawing is 72.75" inside the legs plus from measuring mine adding the width of one rail and gear rack @ 3" plus the other rail and angle iron cable track @ 5"... so by my figuring a 5x10 table should be 144" long by 80.75" wide, height on mine is 39" not including any leveling devices.
If you have to take it appart it should be simple, 12 bolts... i would mark the corners so it goes back the same way and to make it easier.
Hope this helps