Grant Gunderson
Well-known member
Looking at leasing a commercial space for my business, and curious if this floor will hold the weight of my machines, Bridgeport Mill (2500#s), A monarch 10EE (3500#s) a ski tuning machine (up to 6000#s) as well as a bunch of lista cabinets, etc. Thoughts on what this floor could support?
"This building was built around 1930 and there is no record of engineering. We carried out an in depth remodel. We tore out the finishes to the studs in most of the building and fitted new wiring and plumbing. Engineering calculations were made for the earthquake retrofit on the exterior brick wall. The floors throughout are very beefy and everyone felt engineering calcs were not needed. In the past the floor held both cars and numerous large slabs and monuments of granite (we have pictures of this). In rhetorical past the space was used for vehicle repairs and for making granite monuments / tombstones.
The floors consist of car decking laid on top of 12 inch centered 3 X12 joists set on 12 by 12 wood beams, set apart 12 feet. So the 3 X 12 joists only span 12 feet. The only thing we found that gave us pause was that the 12 by 12 posts holding the beams were sitting on a thick slab and we were not sure if there were footings underneath, so during the retrofit, we lifted the structure and poured 4 by 4 by 3 foot footings under the posts. You can see these footings in the concrete basement floor under the space."
Here are some photos of the space, I don't have any of the area underneath it, that they described.


Front of the building is at ground level.

There is a walk out basement under it that houses offices.

"This building was built around 1930 and there is no record of engineering. We carried out an in depth remodel. We tore out the finishes to the studs in most of the building and fitted new wiring and plumbing. Engineering calculations were made for the earthquake retrofit on the exterior brick wall. The floors throughout are very beefy and everyone felt engineering calcs were not needed. In the past the floor held both cars and numerous large slabs and monuments of granite (we have pictures of this). In rhetorical past the space was used for vehicle repairs and for making granite monuments / tombstones.
The floors consist of car decking laid on top of 12 inch centered 3 X12 joists set on 12 by 12 wood beams, set apart 12 feet. So the 3 X 12 joists only span 12 feet. The only thing we found that gave us pause was that the 12 by 12 posts holding the beams were sitting on a thick slab and we were not sure if there were footings underneath, so during the retrofit, we lifted the structure and poured 4 by 4 by 3 foot footings under the posts. You can see these footings in the concrete basement floor under the space."
Here are some photos of the space, I don't have any of the area underneath it, that they described.


Front of the building is at ground level.

There is a walk out basement under it that houses offices.

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