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<br /> <br />This commercial office building, completed in 1973, has a <br />first-floor elevation of 63 feet, National Geodetic Vertical <br />Datum (NGVD). It has a steel frame that is hung on four <br />concrete columns. Exterior glass walls enclose the building, and <br />a parking area exists beneath the raised building (Figure A 18). <br />Cost of construction was $274,000. <br /> <br />The 100-year flood elevation at this site is estimated to be 62 <br />feet, j\;GVD. Since the building was completed, two 100-year <br />floods on Little Bear Brook occurred, both in 1975 within 2 <br />weeks of each other. The only damage sustained during the <br />floods was an accumulation of mud on the parking lot. The <br />owner indicated that, during the floods, floodwaters flowed <br />freely beneath the building and no debris collected. <br /> <br /> <br />The Hillier Group office <br />building raised on <br />concrete corner <br />columns, Princeton, <br />New Jersey <br /> <br /> <br />~' m"p-g ~)t. <br />~.:::-:~~ . <br />- _.;-~ ':"-- <br />~ ~~--~ <br />~.~...- ~~ <br /> <br />Figure AIS. Office building raised on concrete corner columns <br /> <br />41 <br />