pmuente
2019-09-26 13:09:47
- #1
Hello,
I am Peter and new here.
Currently, my 8-family house is troubling me.
The house was built in 1957. Actually, it is 2 adjacent 4-family houses with 2 apartments next to each other and 2 above each other in each. All apartments are about 57 sqm each.
The previous owners renovated quite a bit over the decades, but not the roof, and it is worn out.
Since the stairwell leads up to the attic, the idea came up to add another floor with 4 more apartments (side by side).
The city building authority has also approved it. Unfortunately, there are no old plans, not even in the city archive, so the structural engineer instructed to expose the foundations of the load-bearing exterior walls and the central wall in one piece.
And here it ends. All foundations are only as wide as the load-bearing walls (30 cm) and the statics are not sufficient according to today’s standards, even for the existing structure.
For an additional floor, all load-bearing walls/foundations would have to be reinforced.
However, for the building length, the reinforcement would allegedly cost no less than €100,000 just for the foundation strengthening.
I also do not want to impose this intervention on the old house.
Currently, neither the architect nor the structural engineer offers a solution.
For example, the idea occurred to me to build the apartments almost self-supporting with steel columns/steel beams over the existing building at a height of 5.5 m. Visually, I find steel beams along the existing structure appealing and thus would decouple the new apartments from the weight. Everyone still looks at me incredulously, but I am looking for solutions and the architect as well as the structural engineer seem somewhat conservative to me at the moment.
In this forum, I hope for national and many suggestions.
Thank you very much.
Peter
I am Peter and new here.
Currently, my 8-family house is troubling me.
The house was built in 1957. Actually, it is 2 adjacent 4-family houses with 2 apartments next to each other and 2 above each other in each. All apartments are about 57 sqm each.
The previous owners renovated quite a bit over the decades, but not the roof, and it is worn out.
Since the stairwell leads up to the attic, the idea came up to add another floor with 4 more apartments (side by side).
The city building authority has also approved it. Unfortunately, there are no old plans, not even in the city archive, so the structural engineer instructed to expose the foundations of the load-bearing exterior walls and the central wall in one piece.
And here it ends. All foundations are only as wide as the load-bearing walls (30 cm) and the statics are not sufficient according to today’s standards, even for the existing structure.
For an additional floor, all load-bearing walls/foundations would have to be reinforced.
However, for the building length, the reinforcement would allegedly cost no less than €100,000 just for the foundation strengthening.
I also do not want to impose this intervention on the old house.
Currently, neither the architect nor the structural engineer offers a solution.
For example, the idea occurred to me to build the apartments almost self-supporting with steel columns/steel beams over the existing building at a height of 5.5 m. Visually, I find steel beams along the existing structure appealing and thus would decouple the new apartments from the weight. Everyone still looks at me incredulously, but I am looking for solutions and the architect as well as the structural engineer seem somewhat conservative to me at the moment.
In this forum, I hope for national and many suggestions.
Thank you very much.
Peter