On 5/11/12 5:23 AM, swingbyte wrote:
s disappointing!
I need to measure the height of my house floor to be above the flood
plane contour. I might have a look at some dted from work. Might have to
pay a real surveyor to measure the height datum.
Thanks for all the info though guys
for that, you need a real surveyor who can provide a "legally accepted"
measurement. Someone who can
a) know from the flood level definition what vertical datum they are
using (probably NOT something normal in the geodesy world)
b) knows the legalities of establishing the difference
The mechanics of surveying (leveling in this case) are straightforward
to learn. The legalities and local practices in documentation are not.
This is what getting a Land Surveyor's license is all about.
There's also a question of what the legal height of your house is,
relative to the property (from a flood insurance standpoint). They
might have some arbitrary offset in the rules. Sort of like how baseline
electrical power consumption is actually about 2/3 of the expected
minimum consumption in the area for a given size house and appliances
(e.g. nobody is likely to consume less than baseline)
There are some mortgage servicers, by the way, who take property
addresses that have been geolocated and FEMA flood plain definition maps
to determine whether you definitely don't, definitely do, or just might
need flood insurance. The maps change (as does the geolocation). From
what I understand, about 3-5% of the properties scanned require some
sort of manual intervention (maybe the address doesn't geolocate, or
it's right on the line, or)
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