I am going to make a low platform for my washer/dryer. Its sole purpose is to provide a level surface; my basement floor is scary uneven.
I'm envisioning something like this:
The leveling feet are similar to this:
The model is assuming 4x4's, although I would use 2x4's if they're strong enough. I'll put plywood on the top for more strength. I'll hollow out some depressions for the appliance feet to nest into...
I want to use four leveling feet instead of six, but I don't want to center to sag. How can I calculate if the center feet are required?