Loading...
tree strike roof damage assessment.pdf This email is intended to document the site visit made on Monday, September 21, 2015, to assess the damage done to, and to determine the permit submittal requirements for the necessary repairs of, the northeast portion of the roof due to a tree strike. The assigned file number is INV20150083. There appears to be a failure of the top chord of at least three open-web 2x4 roof trusses due to direct impact by the tree – see attached photos 3 & 4. The integrity of the truss plate connectors, webs, adjacent top chords, and bottom chords did not appear to be compromised as a result of the tree strike. The trusses are supported at each end by two large glu-lam beams that did not appear to suffer any damage. Due to the localized nature of the damage observed, the truss repairs could be completed by ‘sistering’ a 2x4 from the ridge to the bearing glu-lam along the damaged area of the top chord, connected with 2-16d nails placed 8 inches on-center and specifically over where the truss web provides support. Alternatively, truss repair design(s) can be prepared by an engineer and be available on site to guide repair and inspection efforts. There appears to be a failure of at least three 2x8 sawn roof rafters due to direct impact by the tree – see attached photo 2. Rafter repairs, including the blocking between the rafters, are anticipated to be ‘like-for-like’ replacements using light- frame construction methods to be verified by inspection. There appears to be localized failure of the roof sheathing in the immediate vicinity of the primary point of impact by the tree – see attached photo 2. Roof sheathing repairs are anticipated to be ‘like-for-like’ replacement using light-frame construction methods to be verified by inspection. Roof covering required to be removed to facilitate the repairs are anticipated to be ‘like-for-like’ and will be verified by inspection. A small portion of the gypsum wallboard ceiling attached to the underside of the roof rafters has been displaced by the forces of the tree impact – see attached photo 5. Gypsum wallboard replacement is anticipated to be ‘like-for-like’ with no inspection necessary. The existing roof insulation can be retained in place/reinstalled for future use. A permit is required to perform the necessary work to repair the damage noted above and any other discovered during repairs. It can be obtained over-the-counter, with no ‘building plans’ necessary. Confer with the Building Inspector on site to discuss any repairs to be made beyond those listed above to determine the required methods and documentation. Removal of the displaced gypsum wallboard, and any work to prevent roof leakage during seasonal rains, appears to be all that is immediately necessary to enable the continued safe use of the structure for its intended use. Repairs must be done in such a manner as to maintain the safety of the occupants of the structure during the time of and in between any work done to complete the necessary repairs. Feel free to contact me if you have any questions. Chuck Miller, Plans Examiner chuck.miller@edmondswa.gov 425-771-0220 x 1314 Development Services Department Building Division th 121 5 Avenue N Edmonds, WA 98020 www.edmondswa.gov Development Services Permit Center Hours Monday & Tuesday - 8:00AM – 4:30PM CLOSED Wednesday Thursday & Friday - 8:00AM – 4:30PM