iloveoscars702;4068538; said:
how can you tell if its a load barring wall?
"Load bearing" usually refers to whether or not a wall is currently supporting a load other than it's own weight. Most walls, except flimsy partitions are capable of being load bearing, but not all are asked to.
The ways to tell are straightforward.
If you have more than one floor, then any wall that is below an upstairs wall is load bearing. Any upstairs wall that has attic joists terminating above it is load bearing. Nearly all outside walls are loadbearing.
If you have a crawlspace, then any wall can be loadbearing if it goes right down to the piers, forming a direct line from the wall to the ground below it.
By the way, a crawl space is easy to reinforce as you can build additional piers anywhere that you can get access to.
Some internal wall "can" be loadbearing if attic joists run over them even if they don't termiate, because the wall may have been used to reduce the effective span of the joists.
It's usually pretty easy to tell. If you have any doubt, get a builder or engineer to advise you.