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<br /> <br />Two-story woodframe <br />house raised on <br />concrete block <br />foundation, <br />Sacramento, California <br /> <br /> <br />This residence was built adjacent to the Sacramento River in <br />an area that is frequently flooded. Depth of flooding may reach <br />6 to 7 feet. The house is of wood construction and was originally <br />built upon a concrete block wall. The first floor has never <br />flooded. Openings have been left in three of the four basement <br />walls to allow floodwaters to enter the structure in order to <br />equalize hydrostatic pressures. The grade of the lot is such that <br />access to and from the house by way of the front can be <br />accomplished at any time during flooding. Flood duration may <br />be 1 to 2 weeks. Heating and air conditioning units are raised <br />above ground level and are directly beneath the first floor. The <br />brick wall on the river side of the house is also built to allow for <br />the free flow of floodwater (Figure A2). The estimated cost of <br />building the house above flood level is $15,000. The structure, as <br />designed and constructed, is attractive as well as functional. <br /> <br /> <br />Raised air conditioning unit and openings for free flow. <br /> <br />Figure A2. Wood frame house raised on concrete block foundation <br /> <br />16 <br />