Grenade damage of the attacking sentries
The multiplier for the besiegers' grenades. They affect areas, not single walls.
scum.BaseBuildingAttackerSentryGrenadeDamageMultiplier=1.000000
What does this setting do?
Grenades are the third weapon in a base siege, and they behave differently from the other two: they hit an area. A grenade that comes through a window or an already-made hole damages several elements at once and also catches chests, ovens and turrets inside.
That makes this multiplier the most important one for everything standing inside a base. If the complaint is that a siege ruins the furnishings rather than just the walls, this is the value to lower.
It only bites once the besiegers have an opening. Against a closed, solid base grenades achieve little – and a great deal once the railgun has made a breach. So the three weapon values are connected: the railgun opens, the grenades clear out.
Which value suits my server?
0 to 0.5. The furnishings should survive a siege.
1.0 (default).
1.5 to 2.0. Allow a breach and you lose the stash too.
What to watch out for
Grenades damage chests, ovens and turrets inside. Protecting only the walls will not get you far with the other two multipliers.
While the base is sealed, grenades barely register. This value becomes noticeable once the railgun has opened it.