Stepped ash Calc - https://www.brewersfriend.com/mash/
T x B + V = P 1 x 1 + 5 = 6
T= boil time
B=boil off rate
V=batch size
P=pre-boil volume
For Strike water volume
A x G + P = Sv .1 x 22.55 + 6 = 8
A=Grain absorption rate (.1-.125)
B=boil off rate
V=Batch Volume
G=total grain weight
Sv=Strike water volume
Mash at 146 for 90'
Strike water 156
Boil 60'