Laserfiche WebLink
Structural Design Associates <br /> Engineering Structures to Last <br /> vicinity of a web/chord intersection(see photo#2) as is therefore deemed inadequate to <br /> support the truss system. The bottom chord shall be reinforced with a 2x6 beam spanning <br /> from the exterior wall of the garage to the interior party wall. The 2x6 beam shall be <br /> sistered to the bottom chord with l0d nails at 6"on center. <br /> 3) Various components of the gable garage truss are severely charred(see photo#6).All <br /> components charred more than an 1/8"(section reduced more than 1.375x3.375)shall be <br /> removed and reinstated with new material. <br /> 4) The interior party wall in the garage is offset from the bottom sill plate. This offset is <br /> likely due to the drastic increase of interior pressure during the blast. The party wall shall <br /> be reinstated onto the bottom sill plate such that it is plumb and centered on the garaged. <br /> All components charred more than an 1/8"on any side shall be removed and reinstated <br /> with new material. <br /> 5) The sill plates above the party wall and garage header are severely charred.All <br /> components charred more than an 1/8"on anyside shall be removed and reinstated with <br /> new material. <br /> 6) In various locations the exterior drywall sheathing is damaged due to water and exposure <br /> to the elements.In addition,the interior pressure generated from the blast may also have <br /> damaged the exterior garage drywall(see photo#7). Once damage to the drywall has <br /> occurred it must be replaced. The 2015 International Building Code does not allow <br /> drywall sheathing as a lateral load resisting system for two story structures located seismic <br /> design category D.As a result,a new lateral load resisting system design is required to <br /> support the house. To aid in the installation,this new lateral load resisting system may be <br /> installed on the interior side of the existing shear walls. <br /> The items listed above shall not be used or function as a complete list of structural deficiencies. <br /> Any other damaged structural member not listed above shall be'brought to the attention of the <br /> engineer. <br /> During the modifications to the framing the contractor shall ensure that all posts are fully <br /> supported and blocked to the foundation below. All conditions described above shall be field <br /> verified by the contractor. The construction sequence and the installation,maintenance, and <br /> removal of temporary supports is the responsibility of the contractor. Any deviations from the <br /> conditions described above shall be reported to the engineer. Please contact this office if you <br /> have any questions concerning this letter. <br /> SCO VIA <br /> Respectfully, w,.. , G <br /> Jasper Baarbe, E.I.T. r <br /> i <br /> p ,IADO Chris Covington,P.E. <br /> JAN 0 8 2010 <br /> .....4) A4 ''''38 , , <br /> 2210 Hewitt Aye,Suite 401 Everet V ' , H , t 4 )la:425-339-0293 Fax:425-252-0916 <br /> www.strucdes.com <br />