Laserfiche WebLink
MINIM MIMEO NMI <br /> DCI NMIMIN <br /> Er1G111EERS <br /> E 1 Washington <br /> oqI Oregon <br /> ECalifornia October 19, 2018 <br /> 1 Texas <br /> }Alaska City of Everett <br /> Colorado 3200 Cedar Street <br /> i Montana Everett,WA 98201 <br /> Attn: Drew Martin <br /> Re: Structural Plan Review <br /> Terra Power Tenant Improvement <br /> Plan Check Number: B1808-012, First Review <br /> Dear Mr. Martin <br /> The following is our responses to your structural permit comments dated October 1,2018. <br /> Structural <br /> General: <br /> 1. It is understood per discussions with the project architect that the design for the area between <br /> Grids E.3-F.6/2.9-4.6 may be revised. The architect has indicated the area will be revised to <br /> provide an independent structure with a 125 psf storage area above the office/laboratory space. <br /> Structural drawings showing the revised construction of this area should be submitted for review. <br /> Criteria for the design of the structure, including but not limited to the proposed lateral system, <br /> shall be stated in the Structural General Notes on Sheet S1.0. Based on the proposed storage <br /> loading, it is presumed that the 6-inch slab may not be sufficient for the revised design and should <br /> be provided with new foundations as needed. At least two columns for the existing building are <br /> located within the footprint for the proposed independent structure;the columns should be <br /> seismic isolated from the structure. Calculations substantiating the design of the structure should <br /> be submitted for review. Additional comments may be,provided pending the review for this <br /> portion of the project. See IBC Sections 1603.1, 1603.1.5, 1604.1, 1604.1, and 1613.1, and <br /> ASCE 7-10 Sections 12.12.3. <br /> DCI Response: Drawings have been updated to include the TAT space, located as you note above. <br /> See updated and additional calculations providing structural engineering for this added space.The <br /> items you mention above have been addressed. See calculations T-1 thru T-37. <br /> Gravity System: <br /> 2. Sheet A2.4 indicates that the Second Floor will include blackout curtains. The structural plans do <br /> not appear to include framing to support the curtain. The support requirements for the curtains <br /> should be clarified. Drawings and calculations for supplemental framing should be submitted for <br /> review as needed. The calculations should evaluate the existing roof structure to support the <br /> additional loads as needed. See IBC Sections 1603.1 and 1604.1. <br /> DCI Response: The blackout curtains are extremely light-weight. They weigh approximately 0.1 PSF. <br /> The curtains are split so that half will store on the east wall of the office and the other half will store on <br /> 818 Stewart Street,Suite 10001 Seattle,Washington,98101 Phone(206)332-1900 <br /> rvice Innovation Value <br /> 5 <br /> pe <br />