Sec. 3-1520

Floodplain

• Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure size in SFHA600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Be limited to no more than 600 square feet in total floor area

• Maximum breakaway wall design safe loading resistance20 psf

  a breakaway wall shall have a design safe loading resistance of not less than ten and no more than 20 pounds per square foot

• Maximum enclosed space below lowest floor in V zones300 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The enclosed space shall be less than 300 square feet.

• Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of flood opening bottom1 ft

  The bottom of all required openings shall be no higher than one foot above the adjacent grade.

• Minimum breakaway wall design safe loading resistance10 psf

  a breakaway wall shall have a design safe loading resistance of not less than ten and no more than 20 pounds per square foot

• Minimum flood opening area1 sqin/sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The total net area of all openings must be at least one square inch for each square foot of enclosed area subject to flooding.

• Minimum number of flood openings2 count

  Provide a minimum of two openings on different sides of each enclosed area subject to flooding.

• Minimum freeboard above BFE1.5 ft

  elevated to or above the base flood level plus eighteen (18) inches