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Can someone explain to me Base Flood Elevation
Posted on 9/10/14 at 10:09 am
Posted on 9/10/14 at 10:09 am
Say your listed BFE is 8',
And your ground elevation on your lot is 4' above sea level.
Does this mean that I would have to build 4 more feet higher to reach 8'? Or does it mean regardless of whatever the ground elevation is I have to go 8' high?
And your ground elevation on your lot is 4' above sea level.
Does this mean that I would have to build 4 more feet higher to reach 8'? Or does it mean regardless of whatever the ground elevation is I have to go 8' high?
10
Posted on 9/10/14 at 10:11 am to geauxcats10
Flood zones would be kind of pointless if it wasn't with regard to sea level.
Posted on 9/10/14 at 10:14 am to geauxcats10
You may have to go a foot or two, or more, higher depending on your regs.
Posted on 9/10/14 at 10:15 am to Chad504boy
Is it only 6" or 1' above BFE?
You'll need to be at least 4' higher. I got screwed with this when they changed they flood maps. Two houses coming up beside me that are about 1' higher than me (small lots in neighborhood), so I'll get to hold all their water runoff.
You'll need to be at least 4' higher. I got screwed with this when they changed they flood maps. Two houses coming up beside me that are about 1' higher than me (small lots in neighborhood), so I'll get to hold all their water runoff.
Posted on 9/10/14 at 10:17 am to geauxcats10
quote:
Say your listed BFE is 8'
The BFE is based on sea level.
quote:
Does this mean that I would have to build 4 more feet higher to reach 8'?
Yes, you would need the finished floor elevation to match the BFE at 8'.
However, you also need to consider building above BFE for insurance purposes. BFE is typically based on a 100-yr flood elevation; some insurance companies will base their rates on the 500-year flood elevation.
Posted on 9/10/14 at 10:19 am to geauxcats10
You need to look at BFE relative to your site elevation using the same datum. I don't see the relevance of sea level.
Posted on 9/10/14 at 10:20 am to LSUtigerME
quote:
Is it only 6" or 1' above BFE?
You'll need to be at least 4' higher.
6" rounds to 1'
Posted on 9/10/14 at 10:27 am to geauxcats10
EBR is 1' above BFE! So in this case you would have to be at 9' elevation a 5' increase.
If you build a pad that high make sure you give it a chance to compact and get a compaction test afterwards before building. Might want to consider post tension slab as well.
If you build a pad that high make sure you give it a chance to compact and get a compaction test afterwards before building. Might want to consider post tension slab as well.
Posted on 9/10/14 at 10:30 am to geauxcats10
Make sure you have the same survey for BFE and whatever your stated ground elevation is...
The definition of "sea level" is dependent on the survey.
The definition of "sea level" is dependent on the survey.
Posted on 9/10/14 at 10:30 am to jrodLSUke
quote:Not exactly. It's based on the NAVD88 since sea level is not consistent.
The BFE is based on sea level.
Posted on 9/10/14 at 10:38 am to Grit-Eating Shin
I'm asking if it is determined that my property is 4' above sea level and the listed bfe is 8', would I just have to go 5' off the ground?
Posted on 9/10/14 at 10:43 am to geauxcats10
FFE needs to be 1' above BFE
Posted on 9/10/14 at 10:44 am to geauxcats10
stop saying sea level
your Top of Slab (FFE) needs to be 1' above BFE
your Top of Slab (FFE) needs to be 1' above BFE
This post was edited on 9/10/14 at 11:05 am
Posted on 9/10/14 at 10:46 am to djangochained
He's confused because he thinks the BFE is the height above the ground level of his property.
Posted on 9/10/14 at 10:48 am to geauxcats10
Yes go 5 ft off the ground
Posted on 9/10/14 at 10:49 am to geauxcats10
where are you building?
parish?
parish?
Posted on 9/10/14 at 10:52 am to geauxcats10
GapToothLover can
Now him actually posting is a deferent story.
Now him actually posting is a deferent story.
Posted on 9/10/14 at 11:02 am to dyslexic
quote:
Now him actually posting is a deferent story.
That fawking Blue Duck Finished Floor Elevation needs to be 1' above BFE
You're looking at the relativity of your lot elevation (4') versus Base Flood Elevation OF YOUR LOT (which according to you is 8')
From your 4' elevation, however you get your finished floor elevation to 9' is up to you.
Now this 1' above BFE requirement is in Ascension mind you, i'm pretty sure the same goes in EBR and Livingston.
This post was edited on 9/10/14 at 11:04 am
Posted on 9/10/14 at 11:03 am to geauxcats10
All elevations are taken from the same datum (NAVD88). If your property is at elev. 4' and the BFE is at 8', then your property is currently 4' below base flood.
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