The ICC codes call out a minimum of a one vent within 3 feet of each corner. It shouldn't be to much trouble to create the openings in the stemwall and place some vents:
For a rectangular building (4 sides) should I place 4 vents or 8 vents? Provide only the openings or also provide a generic foundation vent (lightweight geometry?)
Moving an opening is actually very easy within SketchUp, when it comes to a solid wall like this.
What is the typical header thickness between the top of the vent hole and the top of foundation?
Vent size seems to be 16"x8" for most vents I've seen.
With regards to vents there are the cheap plastic ones you can get a Home Depot or Lowes and and then there are a whole ton of more expensive louvered metal manufacturers of vents and flood vents.
For a rectangular building (4 sides) should I place 4 vents or 8 vents? Provide only the openings or also provide a generic foundation vent (lightweight geometry?)
Moving an opening is actually very easy within SketchUp, when it comes to a solid wall like this.
What is the typical header thickness between the top of the vent hole and the top of foundation?
Vent size seems to be 16"x8" for most vents I've seen.
With regards to vents there are the cheap plastic ones you can get a Home Depot or Lowes and and then there are a whole ton of more expensive louvered metal manufacturers of vents and flood vents.