First Floor Elevation Reference Boston City Base

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First floor elevation reference boston city base.

You must be able to show that the lowest elevation of the building the top of bottom floor on your elevation certificate is above the base flood elevation bfe to be eligible for the adu program. This is a good way to reduce your flood risk and it can also reduce future flood insurance premiums. Using a fixed reference point as a baseline i e a zero elevation point elevation values can be consistently measured and compared among various maps and surveys. A city wide datum that can be converted to navd88 by using a conversion factor of bcb 6 46 feet.

Elevate your home s lowest floor above the updated flood elevation provided by fema or the base flood elevation bfe shown on your community s effective firm whichever is higher. Fema defines the base flood elevation bfe as the computed elevation to which the flood is anticipated to rise during the base flood. Base flood elevation the base 100 year flood elevation having a 1 percent chance of being exceeded in any given year. It is also referred to as the 100 year flood and is the basis for the nfip administered by fema.

Boston city base bcb. N the bottom of the lowest horizontal structural member of a building in the v zone is elevated 1 foot or more above the base flood elevation bfe i e add freeboard. If you choose to elevate you must raise your home at least two feet above the base flood elevation. The bfe is shown on the flood insurance rate map firm for zones ae ah a1 a30 ar ar a ar ae ar a1 a30 ar ah ar ao v1 v30 and ve.

Just in case those terms are new to you the 1 percent annual chance flood means that statistically there s a 1 chance every year that there will be a flood that looks. The north american vertical datum of 1988 navd 88 is the official vertical datum of the united states having superseded the older national geodetic vertical datum of 1929 ngvd. Elevating your home above the projected flood elevation base flood elevation can keep your home and belongings safe from damage. Defined by fema as the top of water elevation projected for a specified flooding scenario.

An elevation certificate will show the bfe. The base flood is also referred to as the 1 percent annual chance flood or 100 year flood. Bfes listed on fema flood insurance rate maps are based on the 1 annual chance flood. You may want to check your mortgage documents for this information.

Ommended that the elevation requirements of asce 24 that exceed the minimum elevation requirements of the nfip be followed. A public hearing will be held by the board of appeal ofthe city of boston in room 801 city hall upon the appeal of joseph holland seeking with reference to the premises at 163 newbury st ward 05 for the terms ofthe boston zoning code see acts of 1956 c. Base flood elevation bfe. 665 in the following respect gcod article s.