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, <br /> NWTE NorthWest Tower Engineering <br /> Rucker Hill, Everett, WA Report No. 210621.13 April 22, 2021 <br /> Introduction <br /> NorthWest Tower Engineering (NWTE) has completed a structural analysis of a 300-foot guyed <br /> tower on Rucker Hill in Everett, Washington. The analysis was performed at the request of <br /> Snohomish County 911 (Sno911) to determine the ability of the tower to support existing and <br /> proposed equipment. <br /> Tower Information <br /> The tower is a Rohn Model 80 manufactured in 2001. Rohn tower and foundation drawings <br /> were provided. No geotechnical report was provided. NWTE designed structural modifications <br /> including replacement of (12) A325 bolts with (12) A490 bolts in the diagonal brace connections <br /> in the bay above the first guy level (82'-7" to 84'-11"). Please refer to NWTE construction <br /> drawings (Project No. 200621.13), dated July 2020 for details of the structural modifications. <br /> NWTE visited the site most recently on 11-11-20 to visually observe the structural modifications <br /> done on the tower. <br /> If further information useful to the analysis is presented, then a revised report may be issued. <br /> Assessed Condition <br /> This analysis was performed to determine the ability of the tower to support the following load <br /> condition: <br /> Existing/Future Appurtenances <br /> Elevation Appurtenance Tx Line Tx Line No. <br /> 78' Leg A CCTV Camera 1/4"Twin-Lead N/A <br /> 84' Leg A M2 Antenna Systems 14.6-6-160 LMR-400 #28 <br /> 58' x 37' Yagi, 14.7 MHz (RCA) <br /> Sonabeam 1250-E Free Space <br /> 99' Leg A Optic Laser(RCA) CAT6, Fiber #30,31 <br /> 100' Leg A M2 Antenna Systems FG9.2-5-160 LMR-400 #29 <br /> 58' x 57' Yagi, 9.2 MHz (RCA) <br /> 105' Leg C 4' HP MW Dish (Clinton) EW90 #4 <br /> Remove in future <br /> 120' Leg A Empty Pipe Mount N/A N/A <br /> 145' Leg A 6' HP MW Dish (Marysville Tanks) EW90 #3 <br /> Remove in future <br /> 150' Leg A 20' 4-Bay Dipole Antenna 7/8" Coax #10 <br /> SRL 410-C4 on Standoff Mount <br /> 160' A,B,C (3) Obstruction Lights 1" OD Conduit #1 <br /> 165' Leg A M2 Antenna Systems 40M4CDD LMR-400 #32 <br /> 50' x 49' Yagi, 7 MHz (RCA) <br /> 20' 4-Bay Dipole Antenna <br /> 228' Leg B SRL 410-C4 7/8" Coax #15 <br /> on Standoff Mount <br /> NorthWest Tower Engineering 1 www.nwtower.net <br /> 3426 Broadway,Suite 302,Everett WA 98201 Tel 425-258-4248 Fax 425-258-4289 <br /> ThL <br />