Basement UNDERPINNING (LOWERING, DIG OUT, DIG DOWN) "How To" DIY or Not ? |Taurus-Realty

Описание: I'm sharing one of my large FOUNDATION "Underpinning" project, also called "Basement floor lowering" or "Basement excavation", "Basement dig out" or "dig down". Underpinning is the proper name to use. Our building footprint is 66 x 38, the part we "Underpinned" is 46' x 38'. Shale rock is the base under this property, i.e. soil type, i.e. easy to break rock. The "Underpinning" part shown in this video took almost 3 months to complete and since I did a lot of research for my own project I shared my knowledge and experience for you to benefit. We used "Flush OVERPOUR" method to minimize the loss of space, i.e. we follow exact line of existing foundation to extend it downward, then cut-off "overpour" chunks. The remaining tasks of radiant heat concrete flooring, grinding concrete floors, epoxy application, building basement walk out, framing and drywall are shown in other videos.

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00:00 Current basement state
00:29 Original basement
01:10 Encapsulated brick wall
03:27 Work begins
05:19 Foundation marked 3' long sections (1, 2, 3)
06:59 First corner ready
07:22 Recall and Update by Taras "It's worth every penny."
09:15 Machines speed up the work
09:47 Dirty job - is this too much for you?
11:00 Truckloads 29 & 4 trailer loads came out of this basement.
11:46 Final excavation depth is reached.
12:28 Prepping to pour the first sequence/phase all sections marked #1
14:15 Sequences/phases #1 and #2 are poured, the last #3 remains
14:46 Installing structural iron beams and posts
16:25 Update by Taras
18:21 Pouring the last #3 sequence ( all sections marked #3)
19:05 Basement filled with gravel
19:24 Cutting off concrete "overpour" edges with wet saw
19:46 Underpinning part done
19:55 Next steps