Tilting Boundary Wall
Tilting Boundary Wall
(OP)
A portal framed building with concrete panel cladding has a wall about 45m (145ft) long built on a property boundary. It’s about 8 years old and now the wall is tilting outwards and very serious cracks are showing in the slab inside and timber wall partitions are separating from the outside wall by up to about 30mm (1 inch).
The soil in my opinion is pretty good. A safe bearing capacity of at least 200kPa and neighbouring buildings don’t seem to have any structural issues (apart from small shrinkage cracks in slabs).
I have some interest in the land adjoining the building and now the client wants to build a load bearing concrete panel adjacent to the existing wall.
The footing system of the tilting wall is shown (dimensions cannot be verified) but it is an eccentric pad footing with both the wall and edge of footing on the boundary. Now this is well outside the middle third (kern of the section) and I’m pretty confident that the reason for the tilt is because of the eccentricity and resulting moment and rotation.
Has anyone any idea how it can be fixed and how to construct the footings for the building adjacent?
The soil in my opinion is pretty good. A safe bearing capacity of at least 200kPa and neighbouring buildings don’t seem to have any structural issues (apart from small shrinkage cracks in slabs).
I have some interest in the land adjoining the building and now the client wants to build a load bearing concrete panel adjacent to the existing wall.
The footing system of the tilting wall is shown (dimensions cannot be verified) but it is an eccentric pad footing with both the wall and edge of footing on the boundary. Now this is well outside the middle third (kern of the section) and I’m pretty confident that the reason for the tilt is because of the eccentricity and resulting moment and rotation.
Has anyone any idea how it can be fixed and how to construct the footings for the building adjacent?






RE: Tilting Boundary Wall
BA
RE: Tilting Boundary Wall
RE: Tilting Boundary Wall
BA
RE: Tilting Boundary Wall
RE: Tilting Boundary Wall
Thanks all !
Any comments on actual repairing the wall prior to tying ?
RE: Tilting Boundary Wall
RE: Tilting Boundary Wall
However, returning the wall to it's original position is another matter.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Tilting Boundary Wall
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Tilting Boundary Wall
The panels are clipped on the columns and as far as the portal is concerned it does look a little skimpy but not to the extent of causing such a huge problem. I recall when the footings were excavated and poured 8 years ago and was always a bit apprehensive about the eccentricity and the fact that the panels and line of the footing were on the property boundary.
My client is concerned that the owners would like to enter his property and do excavations to the base of the footings to see whats going on. I advised him not to let them do this as it could have a serious effect on his future footings which we anticipate being strip footings.
The other side doesn’t seem to be a problem and I don’t know about the slope of the roof.
I do know definitely that something very serious is happening to the boundary wall.
RE: Tilting Boundary Wall
BA
RE: Tilting Boundary Wall
RE: Tilting Boundary Wall