Iron Spikes

So how many come in a bundle of Iron Spikes and how many are needed to make sure a door is closed? In the group its assumed 1:1 ration but thought I would check non the less.

Ratio, None* Bah, this is what I get for not having spellcheck.

The equipment list says “Iron spikes (12)”, so I assume there are 12 in a bundle.

They were used to keep doors open in OD&D, since all dungeon doors automatically shut, but would fail on a 5-6 on 1d6. My personal rule is that they can hold a door open or shut 2/3 of the time, although a door held shut can still be bashed down. Only one spike per door is necessary.

We may want to ask Tavis - apparently, he’s the expert on spiking doors: