Steel Warehouse Foundation Design - Large Sizes

[ftuadles]

I am new to RSA and still learning its functions and workflows. My foundation design results showed large sizes for the spread footings. This maybe due to tension forces resulting to no contact area between the soil and foundation. Please correct me if there is something wrong with my model.  

@Stephane.kapetanovic 

[Simau]

@ftuadles

I didn't see anything wrong  in your structure.

Are you sur of wind load because it seems to me that 200 ft/s wind speed is huge.

As your structure is standard, you may try to apply load wind manually according to your code. 

[Simau · Accepted solution]

@ftuadles 

To reduce lifting reactions  you must add vertical bracings.

Max ULS reaction