The diagram illustrates how buildings in flooding-prone areas can be safeguarded. Overall, the picture shows two methods in which a house can be protected; one is building a stopbank on the riverbank and the other is raising the height of the building above the flood level.
First, in one with a stopbank, The stopbank is built along the riverside over the berm. The 100-year flood level is the mark of maximum flood level, from that mark to the height of the stopbank is freeboard. At the bottom of the stopbank, there is a floodgate that sends water back into the river due to internal ponding by the internal runoff of water during rain.
In contrast, the second method is without the stopbank in which the buildings are raised from the ground floor of a certain height. The ponding level and the house floor level is the freeboard must be at least 300mm to prevent flooding into the house. So the building must be raised by the height of the freeboard from the ponding level or flooding level.
To summarize, the one with a stopbank and without a stopbank can be effective when the area is prone to flooding, and both are suitable for the riverside buildings.
The diagram illustrates how
buildings
in flooding-prone areas can
be safeguarded
.
Overall
, the picture
shows
two methods in which a
house
can
be protected
; one is
building
a
stopbank
on the riverbank and the other
is
raising the
height
of the
building
above the flood level.
First
, in one with a
stopbank
, The
stopbank
is built
along the riverside over the berm. The 100-year flood
level
is the mark of maximum flood
level
, from that mark to the
height
of the
stopbank
is freeboard. At the bottom of the
stopbank
, there is a floodgate that
sends
water back into the river due to internal
ponding
by the internal runoff of water during rain.
In contrast
, the second method is without the
stopbank
in which the
buildings
are raised
from the
ground floor
of a certain
height
. The
ponding
level
and the
house
floor
level
is the freeboard
must
be at least
300mm
to
prevent
flooding into the
house
.
So
the
building
must
be raised
by the
height
of the freeboard from the
ponding
level
or flooding level.
To summarize
, the one with a
stopbank
and without a
stopbank
can be effective when the area is prone to flooding, and both are suitable for the riverside
buildings
.