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You can enter, and you can enter diagonally sideways.
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It should work, and you should be able to lift the sofa in if you tilt it a little.
The depth of the planting reinforcement is not enough, the pouring is too thick, and the load is exceeded, and it will collapse.
You give the size of the problem! Can centimeter height also be called a column?
It depends on whether the minimum size of the sofa is less than or equal to 70 cm when placed diagonally.
What a problem for you! You have to use a tape measure to measure it first, and it is recommended that you sell sofas that can be disassembled. Another tricky way is to hang it from the outdoor balcony, but that depends on the situation.
I can go in. The front and rear two people have an oblique angle of 45 degrees to put the sofa. Just move slowly.