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Structural Analysis of <br />Replacement Deck at <br />Aquisanda Residence <br />63312nd Dr SE <br />Everett, WA 98203 <br />by Rock Engineering, C. Richard Rock, PE <br />3525 Surrey Ct SE, Port Orchard, WA 98366 <br />Phone & Fax 360-871-8660 <br />1/2021 <br />Attachments: <br />(1) Aquisanda Deck Plans by Sound Services & Construction h a r Digitally signed by C. Richard Rock <br />(2 StruCalc Beam Sizing C. R I C 1 1 l� 1 �, Eng cn eri Richard Rock, o=Rock <br />) g ':.,Engineering,ou, <br />email=richard.rock@wavecable.co <br />Rock m c-US <br />Date: 2021.02.18 08:35:34-08'00' <br />References: - <br />a. 2018 IBC - International Building Code 2018 Edition <br />b. 2018 IRC - International Residential Code for One- and Two -Family Dwelling 2018 Ed <br />c. NDS-18 -National Design Standard for Wood Construction 2015 Edition byAmerican Forest and Paper <br />Association <br />d. ASCE 7-16 - Minimum Design Loads for Buildings and Other Structures 2016 Edition <br />e. ESR-1078 - ECC-ES Report for FastenMaster Threaded Wood Fasteners <br />Introduction and Summary <br />This report provides engineering analysis of a replacement deck in Everett, WAto be built by Sound <br />Services and Construction. Deck design is by Sound Services and Construction. This report in combination <br />with sketches by Sound Services and Construction (Attachment 1) constitutes an engineered package. All <br />details not specifically addressed shall be in accordance with 2018 IBC (Ref a) and 2018 IRC (Ref b). Wood <br />allowable stresses are in accordance with 2018 NDS (Ref c). <br />Decks are designed for 60 psf live load, 10 psf dead load, 110 mph exposure B wind and seismic zone D1 <br />perASCE 7-16 (Ref d). <br />Beam sizing is done using StruCalc with results in Attachment 2. <br />All joists, ledger boards,girders and columns are to be pressure treated lumber. Pressure treatment shall <br />meetAWPA Use Category 3B. <br />Allowable soil bearing is 1500 psf. <br />Deck railing to be commercially available railing installed per manufacturer's instructions. All engineering for <br />deck railing is to be provided by the manufacturer. Deck railing is to be installed per manufacturer's instructions. <br />Deck ledger is attached to the existing rim board with two rows of FastenMaster LedgerLok screws or <br />equal 8" oc staggered. (16" oc each row.) <br />Lateral loads are taken out at the building attachment with two Simpson DTT1Z or equal fittings. One fitting <br />attached within 24" of each end of the deck. <br />Ledger attachment and stair attachment are detailed in Attachment (1). <br />The two footings for the deck support posts are new and detailed in Attachment (1) <br />This deck is a one for one replacement for an existing deck. The concrete landing at the bottom of the <br />stairs is existing and is reused without change. <br />Page 1 of 3 <br />