groundplot

(ˈɡraʊndˌplɒt)

1. (Architecture) the plot of ground that is covered by a building

2. (Architecture) a drawing of the ground floor of a building

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

References in classic literature ?

Weston had been shewing them all to him, and now he would shew them all to Emma;fortunate in having no other resemblance to a child, than in a total want of taste for what he saw, for he was slow, constant, and methodical.Before this second looking over was begun, however, Emma walked into the hall for the sake of a few moments' free observation of the entrance and groundplot of the houseand was hardly there, when Jane Fairfax appeared, coming quickly in from the garden, and with a look of escape.

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For a less campy example of a fictional groundplot that is folkish and also Biblical, and where we hardly expect it, consider Henry James's Wings of the Dove and The Golden Bowl.

The mythical method in song and saga, verse and prose: Part II

Each film "raises" Cain, evoking the novelist's groundplot of a murderous love-triangle, only to "raze" the realistic ethos of his high-noir texts by subverting what Roland Barthes calls "insignificant notation."