Laserfiche WebLink
r <br />Mr. & Mrs. David Rahn <br />July 24,1997 <br />Page Three <br />9. The following systems are being considered for construction of a Code complying <br />footing system: <br />a. Underpin footings which will be exterior footings after construction. <br />b. Install pier system with footings at 42" depth spaced approximately 4 to 6 feet <br />apart along existing wall footings which will be exterior footings using footing <br />and grout filled foundation wall as grade beam. <br />c. Installation of A.B. Chance anchors spaced 4 to 6 feet apart using footing and <br />grout filled foundation wall as grade beam. <br />10. These alternatives are being studied from an economic point of view and a final <br />decision will be made in the next few days. <br />CORRECTIVE MEASURES <br />11. Based on observ'alions and analysis, the following corrective measures aie required: <br />a. Foundation footing system to set footing at 42” below grade. <br />b. Close crawl space opening in exterior wall with minimum 8" masonry. <br />c. Provide adequate column pads for interior framing. <br />d. Adjust grade to provide positive drainage away from the structure. <br />e. Tuckpoint and repair any damaged or cracked block or mortar joints. <br />f. Provide special inspections for installation of fooling modifications and <br />footing soil bearing. <br />PROFESSIONAL OPINION <br />12. It is my professional engineering opinion that based on a review of the proposed <br />addition, construction documents, on-site review and structural analysis, the existing <br />8" concrete block masonry is adequate as modified with the corrective measures listed <br />above to support the loads in accordance with the Minnesota State Building Code.