Cataneo, Girolamo - Hier. Cataneus de arte bellica, sive, de designandis ac construendis arcibus & propugnaculis, necnon & de iis oppugnandis, expugnandis ac propugnandis : de itinere exercitus, ac castrametatione, quando expediat manus cum hoste conserere

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6753

QVARTVS MODVS.

Si jaciendum eſſet fundamentum in loco partim ſa-
xoſo, partim verò terreo, ita vt commodè non poſſent
adigi pali, effo diendum eſt in profundum ad decem
vel duodecim pedes, plus minus, prout neceſſarium
videbitur, & curare vt fundus ſit exactè adæquatus ad
perpendiculum: quo facto, palationis loco fient tot
pilæ lapideæ, quot angulos habebit propugnacu-
lum, vel prout erit neceſſe, pro frontium & laterum
propugnaculi lognitudine. Deinde ab vna pila ad a-
liam fiet fornix cum duplici arcu, altero ſupra al-
terum, ita vt conuexitas vnius conuexi-
tatem alterius reſpiciat, ſicut
apparet in ſexta figu-
ra ſequenti.

QVINTVS MODVS.

Occurrit etiã aliquãdo, vt fabricãdũ ſit in loco, qui
fundamento non egeat: vt accidit in ſolo quod eſt ex
viuo & ſolido faxo: tunc adæquandum eſt exactè ſo-
lum, ita tamen vt paululum pendeat centrum verſus,
vt ſuprà dictum eſt. Quòd ſi ſaxum eſſet mótuoſum,
paulatim exſcindetur in modum graduú: qui quidem
gradus ſint benè adæquati, pendeant tamen paululum
centrum verſus: vt jam ſæpe dictum eſt. Quo facto,
propugnaculum, quod inſtituimus exſtruere, ſuperæ-
dificabitur, obſeruatis longitudine & latitudine ipſi
neceſſariis.

Deſignatis & bene adæquatis fundamentis ſuper-
nè, ita tamen vt paululum declinent centrum verſus,

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