| prov:value
| - Thus, in all of them four vertical walls, shown in FIGS. 3-5 as the walls 60, 61, 62, and 63 are poured monolithically, and in all but the elevator and other vertical shafts and stairwells, they are poured monolithically with one horizontal slab, which may be a floor (FIGS. and 21) or the ceiling 64 (FIGS. 3, 5, etc.), which also serves as the floor of the box unit next above.
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