Add a parameter for setting the volume under a false bottom in the mash tun

[Theophane]

My equipment consists of a unique pot for doing the mashing and the boiling part. To do the mashing step, I use a false bottom in order to keep the grain away from the heating element. That means that I have a "dead space" for mashing that I must fill with water in addition to the water use for mash (calculated in Liter by kg of grain). To fit the mash process to my equipment, I need every timer to add manually this volume of water to the initial infusion step and subtract it from the sparge volume.

I think it would be quite easy to add a parameter in the equipment set up to indicate this volume.
This parameter would only be used by the mash wizard to calculate the volume of water to be added for the first mash step ( minVolInMashTun + waterVolGrainRation * grainWeight). If this parameter is set to zero, the behavior of Brewtarget would be the same as before.

[Philip (rocketman768)]

Does the "Lauter Deadspace" parameter in the equipment editor do what you want?

[Theophane (theophane-m-5)]

I think I misunderstood the goal of the Lauter Deadspace, so it has nothing to see with my point.

What I want is more to be added in the wish list category. The thing is that I have a space underneath my false bottom that cannot be a room for the grain during mashing, so I need to add at least this volume of water in addition of the volume of water the grain will be soaking in. I realize later that regardless to the mash thickness, this volume should be taken into account into the mash wizard.
It could give the minimum mash thickness that include this volume of water.

Vg = Volume of water in which the grain is steeped
Vb = Volume of water underneath the false bottom
W = Weight of grain

Mash Thickness = (Vg + Vd) / W

Vg has a minimal value (1.25 qt/lb ?) for the grain to be fully soaked, so the minimal mash thickness should be:

Minimal Mash Thickness = (Vg_min + Vd) / W

It should be very nice to have a feature like that not have to calculate it by hand.