I would like to remove a wall in my walk-out basement but I don't know how to interpret this architectural blueprint. Based on this blueprint, is the wall bearing load or not? I have highlighted the wall in question in the pictures below.
EDIT: On second look, the drawing actually tells us. There's a note box to the right: TYP BEARING WALL 2x4 stud 16" O.C. on Continuous footing. The dashed line around the wall indicates the footing.
ORIGINAL: If I'm reading the drawing correctly, IT DEFINITELY IS.
For the sake of this discussion, north is the top of the drawing.
There appears to be a beam running E-W from the post to the East wall. There are no notes on the west wall talking about a beam pocket. This leads me to believe that the dark line following the same path as the beam is simply a dimension line, not a continuation of the beam. So the beam does not extend westward towards the area you want to deal with.
This makes the total span in the area you're looking at 36 feet. Far too long for 2 x 12's, which means the wall you want to remove is definitely supporting the joists.
Even if the beam does continue, I would take great care. 20 feet is about the max for a joist span. This job calls for a professional engineer to assess the situation.
The solution is probably to dig a footer where the doorway is now, and put up a steel post and raise another short steel or paralam beam where the wall is.
This involves building temporary stud walls on either side of the existing wall to support the load while you're working. You'll need to find a contractor who has done this type of work before.
According to the response from Shannon @ house-improvements.com (he's the pro who owns the site):
Yes that is for sure [the wall is load bearing]. Three things tell me that:
there is a concrete footing (dotted lines) under that wall.
there is a note about a header in that door opening.
the span of those joists over to the main beam is to long to be supported by the size of joists indicated with out some support along the way.
There are some options for you though:
That wall looks to be approx 20' long It is possible that a steel beam could possibly be designed to carry that load but more than likely you would need a post in the middle as well. .
You could open just a portion of that wall and use a wood or steel beam that can span the chosen distance. Either way you should consult a pro because this is load bearing. And this will require a permit.
Thank you everyone for your comments and answers, it is much appreciated!
Everything Chris said is true...but I’m not sure if the note box gives us information about mentioned wall or different one.It't hard to tell from the drawing, at least for me...I don't know the standards in your country, and if house is built according to regulations, but bearing walls should be either vertical or horizontal (I mean one or another direction on the drawing) so maybe you can compare these two "types" and see which is bearing.Also,keep in mind that maybe it is not the wall which is bearing weight, but only his upper part, beam and the rest of the wall isn't load bearing. I would like to provide you with more helpful information but just from the drawing I can't.