Just received a building permit for a glass section measuring 260x210cm in an outer wall, and my question is how strong a reinforcement I need and what it should look like?
The house was built in 1965 with 1.5 floors, and the outer walls are about 25cm thick with exterior plaster.
A friend who works a lot with steel beams has come up with a proposal that includes double L-beams with a material thickness of 10-15mm and 130mm high, 100mm "long" with through bolts. The opening will be 260cm, and the beams are planned to extend about 30cm on each side of the opening so that they "rest" as extra security on the untouched concrete blocks.
The idea is to mill grooves large enough to fit in the first L-beam and then the second, to be able to demolish everything below!
What happens at the moment when I finish milling one groove? Will half the block's thickness hold until I get the bolts and the other beam from the outside in place? The entire wall is 360cm from the corner of the house to the next transverse load-bearing wall that supports the upper floor.
I hope you knowledgeable people understand what I mean.
Best regards, John with a borrowed user account.
