Background

In my personal research into especially the collapse of the towers, the debris, and the state of the WTC compound afterwards, I ran into the issue of no single set of floor plans for the lower levels being readily available.

After a lot of digging I have found reasonable-to-good sources for all floors except for B1, and decided to combine those into one handy set of stackable images. Hope it is of use to someone. Sort of surprised these were so difficult to find.

Result

• Attached the first version of the end result, with colour coded floor plans for each level from Plaza and Concourse down to B6 (sublevel 5). For sources see below.
• All layers have been cleaned, adjusted (rotate/scale/etc), stacked as perfectly as possible, coloured.
• Base layer is a master/site plan slide from the 18324 pdf but with adjustments to some areas particularly involving the sky bridges which had different dimensions in the final construction.
• Images are about 5k, hope Reddit does not downscale
• These are the most basic edited/stacked versions with just colour. Other options will follow, see at the bottom.

Sources

• Base layer/Plaza/ B1/ B4 Mezzazine / B6
  • 18324.pdf (pages262-276)
  • Downloaded from https://pacorpredevblobstorage.blob.core.windows.net/board-documents/uploads/documents/freedom-of-information/foi-fulfilled-requests/18324-WTC.pdf (retrieved 04-2026)
• Concours
  • Downloaded through Reddit from https://imgur.com/W3oCkWD (retrieved 04-2026)
• B3 - B5
  • Base layers downloaded from https://www.911research.wtc7.net/~nin11evi/911research/wtc/evidence/plans/table.html , (retrieved 04-2026)
  • For the B4 Mezzanine area I found the detail a bit too low so I took higher resolution versions from 18324.pdf and pasted those in instead.
• B1 / B2
  • Image posted on Facebook
  • Anonymous

Next steps

I'm working on a number of versions which will be shared separately, including a set in which both the elevation differences on a single level will be more pronounced, as well as clearer view to and from where all ramps go, which can be confusing.

Also in the works the same plans but with the damaged/collapsed areas drawn in to visualize what happened undergound after the collapse. Both of these versions are about half-way through but no idea when I'll have time to finish them. Other options could be colourless or with the background removed.

No idea whether this is useful to anyone, but it felt like a piece of information that was just missing or difficult to find in one place.

If there are specific request feel free to ask but no idea if I'll find the time for them tbh... Any mistakes on my part, please let me know and I'll fix them asap.

Solved/update: The building in the background behind WTC1 remains is the WFC, this photo is taken from between WTC 4 and 5 looking West. The debris on the right appears to be south face of WTC 5 opened up for demolition.

In my personal research I'm documenting a bunch of photos showing the size and location of the debris. But the attached photo I can't seem to pin down.

In terms of location I'm pretty convinced this is Liberty St. looking West. The pile appears to be WTC2. But in front of the tower the street collapsed down which is clear on overhead shots (photo 2).

Yet in this photo that entire 'hole' is not visible, and behind the excavator (though difficult to see) there also is no clear indication of elevation.

So my question: where on Liberty St and at what elevation are this guy and excavator standing?

Are they on ground level? Or standing on B1? Where is the hole?