Hello!

I am sketching a little bit on an extension of the balcony, which is currently recessed into the building and only extends about 50 cm. The overhang rests on 3 posts, and the balcony's width is 6.6 meters. My plan is to build outwards 2 meters and place a support beam resting on 3 columns. On top of the support beam, I will place 45x145 floor joists.

Questions:
  • Can I manage with 3 columns for my extension as well? They will have to bear a bit more load, but is that rarely a problem? I intend to make the columns like the existing ones, which are a combination of 2 45x120s and one 45x70.
  • What should I choose for the support beam? There will be 3.4 meters between the columns. Do I need a glulam beam, or can I use double 45x220 (or something else)?

Attached is a picture of the design... Ignore the diagonal thing, it was intended as a staircase...
 
  • Blueprint of a house with a balcony design, showing a side view with structural details, including pillars and beams. Diagonal line represents stairs.
  • Blueprint sketch of a building facade showing a recessed balcony supported by three posts, with potential for a 2-meter extension.
The length of the columns is needed for sizing.
 
Aha, they become 2.50 m
 
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