• Webster's Revised Unabridged Dictionary
    • n Substruction (Arch) Underbuilding; the foundation, or any preliminary structure intended to raise the lower floor or basement of a building above the natural level of the ground. "It is a magnificent strong building, with a substruction very remarkable."
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Century Dictionary and Cyclopedia
    • n substruction An underbuilding; a mass of building below another; a foundation.
    • ***


Webster's Revised Unabridged Dictionary
L. substructio, fr. substruere, substructum, to build beneath; sub, under + struere, to build


In literature:

The substructions alone were of stone.
"History of Phoenicia" by George Rawlinson
The fire rests upon the broad hearth; the hearth rests upon a great substruction of stone, and the substruction rests upon the cellar.
"Backlog Studies" by Charles Dudley Warner
Gather wood's examination, rests on immense vaults, which are believed to be the substructions of the Temple itself.
"The Lands of the Saracen" by Bayard Taylor
Besides these, in 1900 the substructions of a temple of Apollo Daphnephoros were unearthed.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7" by Various
To the E. at Scauri is a large villa with substructions in "Cyclopean" work.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6" by Various
Occasionally, to add a story, the house is raised by screws into the air and the building substructed.
"The International Monthly, Volume 4, No. 4, November 1, 1851" by Various
There are many bases and pedestals of columns; and the vaulted substructions of the fabrics are still entire.
"Ruins of Ancient Cities (Vol. I of II)" by Charles Bucke
Staircase and substructions of Caligula's buildings.
"Old Rome" by Robert Burn
It was wide and solidly built, resting on the Roman substruction, and covered by a platform on vaulting.
"Annals of a Fortress" by E. Viollet-le-Duc