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Re:Leonardo Da Vinci’s To Do List (circa 1490) by cushychicken on Thursday December 15, 2016 @03:28PM (#13188027)
>[Talk to] Giannino, the Bombardier, re. the means by which the tower of Ferrara is walled without loopholes (no one really knows what Da Vinci meant by this)

I thought "loopholes" generally referred to a narrow upright window with wide angles in the interior but little room at the outside. It's designed so that you can shoot arrows out of it with a wide degree of freedom, but hard to get an arrow into.

Re:Leonardo Da Vinci’s To Do List (circa 1490) by dreistdreist on Thursday December 15, 2016 @05:24PM (#13189156)
Re:Leonardo Da Vinci’s To Do List (circa 1490) by cushychicken on Thursday December 15, 2016 @05:49PM (#13189389)
Interesting! Thank you for sharing.
Re:Leonardo Da Vinci’s To Do List (circa 1490) by kencausey on Thursday December 15, 2016 @04:43PM (#13188727)
OK, let's agree that that defines 'loopholes' in this context but still what is meant by the overall comment? Why ask about building a tower without loopholes?
Re:Leonardo Da Vinci’s To Do List (circa 1490) by sdrothrock on Thursday December 15, 2016 @06:56PM (#13189887)
The loopholes were for, IIRC, scaffolding/braces used during the construction process; my guess would be that DaVinci wanted to know about the construction process that allowed for the building of a tall building WITHOUT those braces.
Re:Leonardo Da Vinci’s To Do List (circa 1490) by jaclaz on Friday December 16, 2016 @06:11AM (#13192456)
Yes, traditionally all stone/masonry buildings (particularly medieval buildings) had these "holes" (they are called "buche pontaie" in Italian, literally "scaffolding holes") to allow for both the scaffolding and lifting devices to be anchored to the walls while building them (and later for maintenance work):

https://it.wikipedia.org/wiki/Buca_pontaia

The English word for it is "putlog hole" AFAIK:

https://en.wikipedia.org/wiki/Putlog_hole

Re:Leonardo Da Vinci’s To Do List (circa 1490) by solotronics on Thursday December 15, 2016 @05:29PM (#13189203)
maybe the blocks a tower is built of normally have holes to lift the blocks by rope, and this tower has no such holes in the blocks.