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<br />Subsidence Investigation <br />Pittman Residence - Zephyrhills, Florida <br /> <br />son Project Number: 3017839 <br /> <br />3.0 STRUCTURAL EVALUATION <br /> <br />3.1 Scope of Structural Evaluation and Overview of Site Conditions <br /> <br />The purpose of the visual, structural assessment of the Pittman residence was to help determine <br />the probable causes that have contributed to the damage of the residence. In addition, the <br />structural assessment provides critical information in determining the appropriate remedial <br />actions for structures that may have been damaged by sinkhole activity. The homeowner, Ms. <br />Pittman, was present during the field portion of the assessment. <br /> <br />According to information provided by the Pasco County Property Appraiser's website, the single <br />story structure was built in 1979. There were no reported or observed additions. The structure <br />faces generally south and is constructed of masonry-block, exterior, load-bearing walls. The <br />floor of the residence consists of a soil-supported, concrete slab-on-grade. The main roof <br />structure was gable in design and was covered with asphalt shingles. <br /> <br />A test pit (TP) excavation was performed along the perimeter of the main structure to directly <br />observe the foundation construction and geometry. For the approximate location of the test pit <br />excavation see Figure 4. <br /> <br />The results of TP-l indicate that the foundation of the structure consists of a masonry block stem <br />wall on a continuous strip footing. The footing measured approximately 9 inches thick by an <br />estimated 12 inches wide and the bottom of the footing was 17 inches bls. The stem wall was <br />offset 2 inches on the footing. The floor of the structure was a concrete slab-on-grade. <br /> <br />3.2 Summary of Structural Damage <br /> <br />The following paragraphs summarize the damage noted during the investigation. Approximate <br />locations and photographs representative of the damage are illustrated in Figure 2. <br /> <br />Interior Damage <br /> <br />SDU observed that there were hairline to 1/16-inch wide wall cracks in the garage, master <br />bathroom, master bedroom, dining room, kitchen, nook, guest bathroom, and living room. The <br />garage and hallway had hairline to 1/16-inch wide ceiling cracks. <br /> <br />Exterior Damage <br /> <br />SDU noted that there were hairline to 1/16-inch wide stair-step and horizontal wall cracks on the <br />west elevation. The north elevation of the structure had hairline to 1/16-inch wide stair-step and <br />horizontal wall cracks. The east elevation of the structure had hairline to 1/16-inch wide stair- <br />step and horizontal wall cracks. The south elevation of the structure had hairline to 1/16-inch <br />wide stair-step and horizontal wall cracks. The driveway and walkway had hairline to 1/16-inch <br />slab cracks. <br /> <br />3-1 <br />