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DeSign Build 5ervices, Inc. <br /> Engineering & ConStruction Management Pr�or�ira�: (360)��3 s��5a <br /> 7_8719- 12G',h St. S.E.. f.lcnry:,b'Jf�9°?72 E-rr.all: rheldesUdbym,nrce.com <br /> September 25, 2009 <br /> C U`l Cl5- GUS <br /> Sebastian Gae <br /> Design Sebastian <br /> 27328- 102ntl Ave NW <br /> Slanwood, WA 98292 <br /> (360)629-533G <br /> SubjecC Siew Residence As•Buill Revision Engineering Impacls <br /> As requested I have reviewed the siluation where changes were made during construction. You have <br /> asked me lo evaluale lhe impact of those changes to the laleral and structural engineering originally <br /> provides for lhis projecL I have.�ddressed lhem as follows; <br /> 1. The wall siuds and foundation were checked for the load irom the new dormer girder trusses. <br /> The 2xG wall studs are adequale bul the foundation would be overstressed if the load was <br /> loaded as a point load. I do nol believe the load will load as a point load given the amount of <br /> wafl sheeting/rim joist available to spreao the load. However as lhe County has lhis concern <br /> we have provided PSL beams between the girder trusses b spread the load to lhe footing. <br /> This required inverted hangers as shown on lhe altached sketch. A calculalion for the beam is <br /> provided. <br /> 2. An additional yable was added lo the new upper floor opposite lo lhe original one. This is <br /> acceplable. Calculations attached. <br /> 3. Tlie upper floor stair landing was revised. This shortened the shear wall above the garage <br /> shear wall. The smaller amount of wall has to be offset with added straps lo the two ends of <br /> ihe wall. This is shown on the allached laleral summary sheet. <br /> 4. The main floor enlry windows were revised lo a bay window. The amount of shear wall <br /> increased so that is acceplable. The header length has increased. I checked the specified <br /> 3.125x12 GLB and it is acceplable. <br /> 5. The kitchen window was made larger.The original shear wall and hoid-downs specified are <br /> still adequate wilh the reduction in wall length.The calculation is attached. <br /> Engineering and summary sheel are altached. If you have any turther questions or I can be of any <br /> further assislance please call me al q�e above number. <br /> i <br /> ,�,ao a. ,, � I�:;«�[�_;LI`i��l�_;-- .- , <br /> Q\G�of w�s,y, E` <br /> �� �� <br /> � �r� , �� .. �� �r:r z s �oa� <br /> � � ��'� � <br /> crrY oF FVF:r-��t �}- <br /> � P�=rntif ':,��� ;�, <br /> 90��ss Q BgEp�O`���1►Q' __-- _...._ : . . . <br /> �aNAL EN ,.� (�'��o� <br /> i - <br /> Rick lieide, P.E. <br /> Presidenl <br /> Attachmen(s <br />