2138 W MUKILTEO BLVD 2016-01-01 MF Import

WEST COAST STRUCTURAL ENGIIJEERING, INC. ---- -------��--- ------.__._ _._-- ._. ----------- -------- � �-- 70924 Mukitteo Speedxay, Swte A Mukilteo, WA 98275 Phone (d25) 147�8998 FaM (425) 341-8966 Emad� email�wcs� nel WNNJVJCSE NEi January 11, 2010 The Leren Company, Inc. PO Box 12863 Mill Creek, WA 98082 Attention: Tom Leren Subject: Heidnl Brothers Lot 1 Revision WCSE Project No: W2851 Dear Tom: �jq( 2-Oa� This letter is in response to plan changes to the above referenced project due to specific site conditions. The structural calculations have been revised to reflect the following changes: The upper roof framing and 2n° floor plan were modified by bumping out the entire 2"tl floor back wall 2'-0" and eliminating the girder truss and partial bumpout at the master suite only. Revised header sizes and sheanvalls are noted on the plans. The 2nd floor framing plan has been modified to reflect the bumpout revision. Double 1'/." x 9 YZ' LVL joists have been added to the framing plan to support the header point loads from the bumpout above. All floor joists along the back portion of the house have been changed to 9 Y�" TJI PRO 210's. A few of the windows along the back wall have been revised in size and location. The calculations and plans for the windows along the back have been modified to reflect the additional loading from the 2"° floor plan change. Due to site topography, the Great Room exterior side wall and a portion of the back wall are required to be designed as a ca�tilevered retaining wall. Attached to this letter and added as detail R/8 to the plans is a cantilevered retaining wall schedule to be used in the specified location. The retaining wall was designed as a cantilevered wall and the top may step down as grade allows with a cripple wall built on top. Where the retaining wall extends to the 2nd floor framing, anchor boits should be located along the top following the SV�i1 sheanvall requirements. In locations where cripple wails are constructed, the cripple wall should be sheathed, nailed and anchored following SW1 shearwatl requirements. If you have any further questions please contact our office. Thank you, �� fi ----- �� . Jeremy McCandless, PE West Coast Structural Engineering Inc. �h� ��_