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<br /> <br />Chapter VI: General Design Practices <br />Elevation <br /> <br />Elevation Sample Calculation <br /> <br />GIVEN OR OBTAINED FROM THE FIELD INVESTIGATION: <br /> <br />The owner of a single-story crawlspace home intends to elevate the structure to eliminate a <br />repetitive flooding hazard. Her desire is to raise the structure one full story (8 feet) and use the <br />lower level for storage and parking, She contracted with a local engineer to perform the design. <br />The engineer's investigation revealed the following infonnation about the existing s1ructure: <br /> <br />. crawlspace home with four (4) blockcourses (no reinforcement); <br /> <br />. the first-floor elevation is two (2) feet above the surrounding grade (which is level); <br /> <br />. the property is located in a FEMA-designated floodplain (Zone A4) and is subject to a <br />1 OO-year flood four (4) feet in depth above ground level; <br /> <br />. floodwater velocities in the area of the house average six (6) feet per second; <br /> <br />. floodwater debris hazard exists and is characterized as normal; and <br /> <br />. the strocture is classified as a pre-FIRM structure. <br /> <br />SASE FLOOD ElEV. (+2' -C!!o l <br />FlRST FLOOR (+e'.0- I <br />GROUNJ (-2'.'" l <br /> <br /> <br />. . <br />. . <br />=::::::::::::::::::::::::::::::::::::::::::::::~~ <br /> <br />EXISTING FRONT ELEVATION <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />.. <br /> <br />10144 <br /> <br />VI - E.46 <br /> <br />Engineering Principles and Practices of Retrofitting Flood-Prone Residential Structures <br />January 1995 <br />