FLOOD ZONES:
NLYH is within 2 separate flood zones. Because of this , New homes on Pier A are going to be higher than new homes on Pier E which is in a different flood zone.
FINISHED FLOOR HEIGHT AND HOW IT IS ACHIEVED:
Using Pier A as an example.
Pier A is at a different elevation than Pier E by one foot plus.
The required finished floor height Is 9 feet above sea level. The maximum height a home may be raised using cement blocks is 36 inches(code) or 3 feet. The frame of the mobile home is 12 inches or 1 foot. The floor joists are 8 inches and the finished floor height is maybe 2 inches thick counting subfloor and the floor itself. Add it all up and you are far short of the required 9 feet.
FILL UNDER HOME:
To make up the difference, fill has to be brought in to raise the house pad elevation so the finished floor height is at the required 9 feet.
In the case of the new Pier A home, the house pad has to be at 4.5 feet above sea level requiring a much more fill to be brought in then a home on Pier E. The fill for the pad and the blocking, frame width, joists, etc are all added together and the required 9 feet is met.
NLYH RULES AND ALL OF THE ABOVE:
There is no rule governing house pad height. Folks refer to a rule that limits fill to 4 inches. BUT, that is only around the PERIMETER OF THE HOME not under the home.
How all this impacts our rule on ridge height in the future remains to be seen.
Hope this helps.
Jon Alberghini