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<br />Types of Residential Structures That Can Be Elevated <br /> <br />Elevating a Slab-on-Grade Masonry <br />Structure <br /> <br />. Elevating a slab-on-grade masonry structure with the <br />slab intact; <br /> <br />. Elevating a slab-on-grade masonry structure without the <br />slab using a firs1 floor constructed of a concrete slab on <br />top of fill; <br /> <br />. Elevating a slab-on-grade masonry structure without the <br />slab using a firs1 floor constructed of wood framing; <br /> <br />. <br /> <br />. Installation of an elevated concrete slab within an <br />existing masonry structure; <br /> <br />. Installation of an elevated wood-frame floor system <br />within an exis1ing masonry structure; <br /> <br />. Creation of a new masonry livable area on top of an <br />existing one-story masonry structure; and <br /> <br />, Creation of 11 new wood-frame livable area on top of an <br />existing one-s1ory masonry structure. <br /> <br />HEAVY BUILDING MATERIALSI <br />COMPLEX DESIGN <br /> <br />The elevation process becomes even more complex with <br />added weight, height, or complex design of the house, <br />Brick or stucco veneers may require removal prior to <br />elevation. Combination foundations (i.e" slab-on-grade and <br />basement) should be evaluated jointly and separately and the <br />worst case scenario utilized for design purposes. Building <br />additions may need to be elevated independently from the <br />main structure. Due to the extreme variability of structural <br />conditions, a structural engineer should evaluate the suit- <br />ability oflifting this type of house. <br /> <br />Engineering Principles and Practices of Retrofitting Flood-Prone Residential Structures <br />January 1995 <br /> <br />VI- E,29 <br />