Filler slab being poured

By Abhijit Menon-Sen <ams@toroid.org>

2015-09-20

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Filler slab being poured

A “filler slab” replaces concrete in the lower layer of the slab with a filler material. This saves concrete and reduces the weight of the slab. A multi-layered filler can help with insulation. These upside-down terracotta pots are meant to look nice from below.