foundation settlement or something else I am not seeing?
foundation settlement or something else I am not seeing?
(OP)
Looking for comments.
Please reference attached photographs.
I have a 32-foot by 58-foot one-story modular building constructed over a crawlspace. The building is two years old. The crawlspace walls are block w/ 2-inch rigid insulation along the entire inside face of the block. Cracks are visible in the concrete slab-on-grade only. The cracks in the slab-on-grade traverse perpendicular to the long walls of the building.
The ground slopes surrounding the building are poor (i.e. they slope toward the foundation in some areas).
I see no apparent issues with roof or first-floor framing in the form of fractures or excessive deflections.
The rigid insulation is jammed tight against the inside face of the crawlspace walls and held in place by the bottom of the floor joists (i.e. I did not get a good look at the inside face of the block walls).
I observed many vertical cracks in the drywall along the joint between intersecting exterior and interior wall panels located around the perimeter of the structure. The cracks are so small that I can't even tell if they are larger at the top vs. their bottom.
A door is jamming at one end of the building in an area where an asphalt parking lot is directing water toward the foundation. I believe the threshold is pushing the door upward. This is possibly from frost heave, any comments?
I do not know what type of soil is under the building. The building could possibly be built on expansive clay, compressible or improperly compacted fill.
I usually lean toward contributing these cracks to foundation settlement due to one of the aforementioned reasons. I just want to make sure I am not missing other possible contributing factors to the small cracks, any comments?
Thank you.
Please reference attached photographs.
I have a 32-foot by 58-foot one-story modular building constructed over a crawlspace. The building is two years old. The crawlspace walls are block w/ 2-inch rigid insulation along the entire inside face of the block. Cracks are visible in the concrete slab-on-grade only. The cracks in the slab-on-grade traverse perpendicular to the long walls of the building.
The ground slopes surrounding the building are poor (i.e. they slope toward the foundation in some areas).
I see no apparent issues with roof or first-floor framing in the form of fractures or excessive deflections.
The rigid insulation is jammed tight against the inside face of the crawlspace walls and held in place by the bottom of the floor joists (i.e. I did not get a good look at the inside face of the block walls).
I observed many vertical cracks in the drywall along the joint between intersecting exterior and interior wall panels located around the perimeter of the structure. The cracks are so small that I can't even tell if they are larger at the top vs. their bottom.
A door is jamming at one end of the building in an area where an asphalt parking lot is directing water toward the foundation. I believe the threshold is pushing the door upward. This is possibly from frost heave, any comments?
I do not know what type of soil is under the building. The building could possibly be built on expansive clay, compressible or improperly compacted fill.
I usually lean toward contributing these cracks to foundation settlement due to one of the aforementioned reasons. I just want to make sure I am not missing other possible contributing factors to the small cracks, any comments?
Thank you.






RE: foundation settlement or something else I am not seeing?
While checking the outside and any soils info, find location of all trees,since they can cause grief in some soil conditions.
RE: foundation settlement or something else I am not seeing?
Improving the drainage on the exterior of the building is probably the main area to focus on.
BA