We are attempting to convert a 80-100 year old concrete stave silo into living quarters that we will rent out - as an airbnb. The concrete staves are 2.5" thick- about 10" wide and 28" tall. They are held in place with metal bands placed approximately every 14". The bands hold the silo together when it was filled with silage or whatever they put in there. There is a dirt floor, no roof and the inside dimensions are 15' 10" diameter. There will be 4 floors + a small entry room. The silo is approximately 43' tall.
The silo conversion project actually began in 2021 when we cut the opening for an entrance into the silo I was unable to find much guidance on how to approach cutting on opening in the bottom of the concrete stave silo. I braced the inside and then welded the bands that were fastened to the frame work of the window opening. We then removed 4 widths of concrete staves - approximately 39.5" by 8 feet tall. I had a metal frame built - 3 x 4" tubular steel, 5/16" thick. I inserted that frame, from the inside until the frame touched all of the bands. I then welded the bands to the frame and then cut the bands - creating an opening 33.5" wide..
The second phase took place during spring break in March of 2022,. There will be a 10x12' entry room on the front of the silo. This will have a small kitchen on one side and a refrigerator, washer/dryer and utility room on the other side. We excavated and poured a concrete footing for this addition. We also poured a concrete patio area. A nearly 400' long trench became the resting place for the underground service wire and the water line from the well. Lots of family help during spring break. My son, Dustin. His two kids, Carter and Maura. My wife Jan and Christian Pedersen.