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How do vertical assaults work in 7th ed? Let's say someone has a squad on the top level of the Basilica Administratum with no space available for other models. Can they still be assaulted?

Is there anything missing/added to the 7e rulebook, different from the 6e, that make you think things have changed?

For vertical it's just like a regular charge distance, like in the movement phase. So if you want to go up two stories (i.e. 6 inches) but only roll 3 you don't make it.

Technically if your model doesn't fit it can't assault, however this can lead to some real unsportsman like behavior. I believe the rulebook encourages you to be generous and sportsman like in allowing an assault to where models may not fit or may wobble and risk falling.

Remember that at all times units must remain in coherency, so if you're going by the rules you need to be within 2 inches of each other (so by the BRB, no 3 guys on the third story and the rest on the ground floor

-EDIT

As insaniak pointed out, 2" vertical, 6" horizontal.

 victorydeluxe wrote:
Remember that at all times units must remain in coherency, so if you're going by the rules you need to be within 2 inches of each other (so by the BRB, no 3 guys on the third story and the rest on the ground floor

This edition allows 6" vertical coherency.

Right you are, six pages into the movement phase 2" horizontal and 6" vertical. Thanks for letting me know.

Of course, there would seem to be a bit of a grey area as to how that coherency is measured if the models are not directly above each other... At what point do you stop measuring the 6" and start measuring the 2"?

The reason I am asking is that the rules used to be much more robust for fighting in ruins and now they are not present in the BRB.

For example: http://www.beastsofwar.com/warhammer-40k/assaulting-ruins-daily-tips/

In the video he is talking about how models can participate in the assault on the level below if they can't fit. Does it still work this way?

Nope. It's back to having to physically fit into base contact now.

 insaniak wrote:
Of course, there would seem to be a bit of a grey area as to how that coherency is measured if the models are not directly above each other... At what point do you stop measuring the 6" and start measuring the 2"?

The way I read it is that it is two separate planes for coherency. So Horizontally you have 2" and vertically you have 6". Probably not a perfect fit to RaW as the 2" never states horizontal. Otherwise as you state we're very much in a case of you must be vertically above or there's no other natural stopping point unless you arbitrarily make up your own.

The terrain rules in 6th were rushed and needed clarification in 7th the decision to effectively remove them all is baffling and near unplayable.

 FlingitNow wrote:
The way I read it is that it is two separate planes for coherency.

That doesn't mesh with base-edge-to-base-edge coherency measurement though, unless models can only ever be on the same horizontal and/or vertical planes as each other. The moment you throw a slope or a stepped ruin into the equation, there is suddenly no way to determine coherency.

 insaniak wrote:

 FlingitNow wrote:
The way I read it is that it is two separate planes for coherency.

That doesn't mesh with base-edge-to-base-edge coherency measurement though, unless models can only ever be on the same horizontal and/or vertical planes as each other. The moment you throw a slope or a stepped ruin into the equation, there is suddenly no way to determine coherency.

Well there still is on a slope in fact in any 3d environment the 2 plane method works. Are you more than 2" away on the horizontal plane? Are you more than 6" away on the Vertical one? In general you'd rarely have to measure more than the Horizontal plane, unless you're in a ruin.

 insaniak wrote:

 FlingitNow wrote:
The way I read it is that it is two separate planes for coherency.

That doesn't mesh with base-edge-to-base-edge coherency measurement though, unless models can only ever be on the same horizontal and/or vertical planes as each other. The moment you throw a slope or a stepped ruin into the equation, there is suddenly no way to determine coherency.

It makes more sense to picture it as a cylinder around the model as such.

As the base is touching the roof of the cylinder that model at the top would be in coherency. Obviously I didn't measure any of that as it's just a rough diagram.

Now horizontal coherency requires the base to be within 6", horizontal requires them to be within 2". There is no minimum to those besides not being able to have them take up the same physical space as each other. Each model has a cylinder that extends 2" out from the edge of their base and 6" both upwards and downwards as the zone of coherency. Slopes ans such can allow some annoying stuff like tipping it onto its side to steal a few more horizontal issues, but I think the idea is it's measured parallel to the floor considering you cannot place models onto their sides to climb up 90 degree angles. Now as the 2" is measured from the base so would the 6" going by the base supplied and obviously not including stuff you add to it to create height.

 n0t_u wrote:
It makes more sense to picture it as a cylinder around the model as such.

It might make more sense, but it's not how the rules work.

Measurement in 40K is from base edge to base edge. But because Coherency only gives us horizontal and vertical distances to work with, if the models aren't in the same horizontal or vertical plane, there is no way to determine coherency.

So now, if RAW, if you can't fit on the floor, you cannot assault? With the rules, I can park an Annihilation Barge on the top floor, no one charge me cos they can't fit and I get to jink against shooting? Anyone else besides me thinks the is pretty powerful?


Automatically Appended Next Post:
Or maybe park a monolith on the top floor of ruins. Can jink, AV 14 everywhere and cannot be assaulted.

monoliths cant jink, but your basically right.

Just remember however, that you will usually only need to get one model up there into b2b, then your opponents models will have to drop floors with their 3" pile in moves to get into b2b with your lower models if possible.

You can litterally drag them off the roof, if you position correctly on the charge.