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TruthTrumps ago

Any way you can explain what you are trying to convey here? Sorry...i think i'm too pizzagated out to comprehend this morning.

24Rainier7 ago

My point is that the visual pattern on the roof may be caused due to the undermining of the walls at specific points, if there is not enough support from bellow ( think shoring up timbers and support beams to span the trench/tunnel) it may well cause low points that then transfer all the way up to the roof. I know, lots of reading and trying to connect dots can get tiring, I'm trying to find the balance between long winded too much detail and too short no info.

ThorTheWonderful ago

Why wouldn't there already be tunnels consider when these building were built, pretty much all commercial properties within the cities had boiler tunnels under them.

24Rainier7 ago

Scale matters, centralized boilers and the associated utilidors tend to part of larger institutions, like hospitals, schools and government facilities. Not 80 year old strip malls built in what at that time would have been the outskirts of town.

ThorTheWonderful ago

Where I am, we have several similar layouts that have boiler tunnels for a "block" heat system that used to be central to these. The old large buildings have tunnels that went to a city boiler. Depending on age, they do vary but these larger buildings even as late as the 60's were still being connected to the central municipal boiler system and have many tunnels.

Imagine if these business's had to each have their own coal fire furnaces just because they were and small strip.. It would be a disaster. And every unit would have to have a basement, even if they used oil heat, they would still need a basement for the furnace and the black smoke and soot would be terrible.

24Rainier7 ago

Fair enough, if that is the case (pre-existing tunnels for steam ) would they simply have penetrations for the plumbing alone or would they have mandoors to each address, I don't know. Here is my other post https://voat.co/v/pizzagate/1460631 . It's just odd, like all the other coincidences that constantly keep popping up.

ThorTheWonderful ago

The tunnels I've seen vary from 2 foot diameter culvert for short runs to 8 foot by 8 foot corridors. Boiler pipes were seldom buried solid as they are a high maintenance item that needs lots of attention. Burying them can also create dangerous cocktail if pipes fail underground. Thats why boilers always used tunnels.

24Rainier7 ago

That's what I'm getting at, steam pipes almost always have tunnels as you say, but getting from the utility tunnel to the individual addresses would not require access points for a person to fit through, just enough to replace the plumbing as needed. Fast forward to the present era and if someone were to try and capitalize on these now abandoned tunnels by retrofitting I doubt they would use the permitting process ( remember the context). Would there be municipal records for such a network, if it exists in that locale ?

ThorTheWonderful ago

Ya, usually the only access would be a man hole or a steel door at one end as well as a vent, a blind man hole with no ladder or a chimney to the top of the building in case of a burst pipe. And my thoughts exactly, who would get a permit to try to use such tunnels. It wouldn't be granted to them I'm sure. As for municipal records, that would depend on policies on record keeping as well as history, if a records hall burns down, what records would there be?! Records cost a lot to keep too so if a records hall never burned down, they might have an expire on records or sort the records according to what is still being used and destroy the rest. While some places keep all records as a matter of preservation of historical value. The only way to know if there are records is to go to the city records department in that area and look it up. If we are lucky, they updated to microfilm and still have copies of all the construction and infrastructure.

ThorTheWonderful ago

Even for far less nefarious reasons, if I had a tunnel like that, I wouldn't seek a permit to turn it into a cold room or something.