2016-01443 - storm damage repair

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Observation Report Gage @ 460 Tonkawa Road A. It is Pie's determination,based on a reasonable degree of engineering certainty, that the energy from the lightning strike exploded the smoke detector mounted on the LVL window mullion.The structural damage from the explosion is limited to the LVL mullion it was mounted to.The lightning strike also caused cosmetic damage to the roofing,glass windows,and interior finishes. 1. The damaged full-height structural LVL window mullion should be removed and replaced. a. Temporary shoring by the contractor is recommended. b. The connection of the LVL beams fastened to this LVL mullion should be restored. Though no damage to the beams were observed on site, the contractor should verify that the beams were not affected by the explosion. C. All members and connections should be restored/replaced to their original configuration. 2. Damaged roof shingles should be removed and replaced. The contractor should verify that the underlying structure/roofing was not affected by the lightning strike. 3. It was discussed on site that the window sealants on the remaining windows that are intact may have been compromised. Therefore, in addition to the shattered window,all windows should be removed and replaced at the north window wall of the living/sitting room. 4. The northernmost timber roof rafter at the west slope of the living/sitting room should be repositioned in the original location and re-fastened to the surrounding members. 5. Scuffed members at the interior should be repaired or replaced. B. The repair recommendations included herein should be utilized for conceptual and estimating purposes and not interpreted as a repair design for which Pie Consulting & Engineering is the engineer-of-record. Any repairs should be conducted by a licensed and qualified general contractor in accordance with the requirements of the Authority Having Jurisdiction. Pie Consulting&Engineering Page 4 of 5 MN716226.00(000)