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Neil Klinglehutz Construction <br /> March 6, 1997 <br /> Page Two <br /> OBSERVATIONS AND COMMENTS <br /> 1. A site visit was conducted by John H. Dahlmeier of J. H. Dahlmeier Engineering Inc. on <br /> March 3, 1997 to review the existing conditions. <br /> 2. The existing garage foundation consists of 8" wide concrete masonry block 16" high <br /> supported on a 12" wide x 24" high concrete footing. The existing grade is just below the <br /> wood framing. The footing bearing material is granular and sandy with a small amount of <br /> clay. <br /> 3. The proposed floor framing will span to the exterior side walls; likewise, the roof framing <br /> will span to the exterior side walls. <br /> STRUCTURAL ANALYSIS <br /> 4. A structural engineering analysis was conducted utilizing construction documents prepared <br /> for Hofer by Autumn Design, Index No. 407R-1, with a final date of 12/16/96. <br /> 5. Based on this analysis, the existing footing and 6" concrete masonry foundation wall can be <br /> used for the proposed construction shown on the documents with the following provisions: <br /> a. An additional 6" wide block will be installed. <br /> b. Final grade will be raised to within 6" of the wood framing to provide adequate frost <br /> protection (42") to existing footings. If grade is not raised to provide protection, <br /> insulation will need to be installed. <br /> c. Fill all cells of the 6" block to the footing with 3,000 psi concrete. <br /> d. Further ensure that the footing to the front left wall extends 42" below grade or <br /> provide insulation to protect this footing. <br /> PROFESSIONAL OPINION <br /> 6. It is my professional engineering opinion that based on the above analysis and provisions <br /> stated, the existing concrete footing and 6" concrete masonry foundation wall and footing are <br /> structurally adequate for the proposed construction as shown on the construction documents. <br />