30 gallon mash tun

[neemo]

i have question, i want to make mash tun from a cylindrical stainless steel vessel 30 gallon.
it is 17 inches diameter and 31.5 deep
Can i mash in 40 lbs of grain and do not have any problem whit lautering or i need wider bottom vessel, do will grain bed be too deep and stuck the flow in the falce bottom.
PS: i plan to make Batch Sparging not continuos

 

[calgary222]

My 30 gallon is 19.5 inches and I have no problems. I use a false bottom and run RIMS and have done up to 57lbs through it so far.
I think with a batch sparge you will be fine - if circulation slows, you can just stir