Mash steps question on brew steps

Hi Guys.

As I'm preparing to brew on next weekend the Mash steps given by BS 2 are not clear to me as instructed in the "Brew Steps sheet".

Mash In Add 18,26 l of water at 70,6 C 64,4 C 75 min
◯ Batch sparge with 3 steps (Drain mash tun , 9,99l, 9,99l) of 75,6 C water

◯ Add water to achieve boil volume of 29,97 l

Should I Step the grains for 75 minutes ---> then drain the mash tun to add 9.99l -> drain again and add the last 9.9l 
             
Any sugestions, I'm confused?

Thanks in advance for your feedback.

OfObrewing

Yes, you are reading it correctly.

You are doing a single infusion mash for 75 minutes.  Once the 75 minutes is up, vorlauf and drain what is in your mash tun into your brew kettle.  Add 9,99L of 75,6 C water...repeat the vorlauf / drain, and then do it again with 9,99L of sparge water.

You might want to check your equipment profile to insure that you have your volumes correct.

-Dan

Thanks Dan

I'll double check my profile but last time it was accurate, still working on the Brewhouse Efficiency though.