220 OLYMPIC BLVD T MOBILE ANTENNA 2023-06-30

a PORT HOLE NOTES 1. All surfaces of the port hole rim itself as well as all exterior structural steel areas affected by welding, including weld metal, shall be galvanized in accordance with ASTM A780. 2. The following criteria are required for adherence to this standard. A. Use rim as template for cutting hole in monopole. Care shall be taken to minimize the root opening (AWS tolerances allow a maximum of 0.19"). B. Provide minimum 24"clear vertical separation between rim and other openings in monopole.Align ports on same azimuth as existing ports. C. Maximum variance of port hole center elevation shall not be greater than 6". D. Provide 90°minimum radial separation or two times the hole width clear circumferential separation between rim and adjacent opening in monopole,whichever is greatest. 18-sided pole with 4 ports shall not be allowed. E. Edge of opening for the exit port must be at least 24"from splice. F. Grind all edges of cut opening, achieving a bevel angle of 45°and removing the zinc from the weld area plus 1/4". Ensure all weld areas and surfaces are clean and free of zinc and loose particles.Zinc shall not be allowed to contaminate the weld. G. Position the rim as required and securely tack weld. Finish welding the rim with bevel weld and reinforcing fillet weld size as determined from the design method. H. Repair with galvanized coating. Both inside and outside should be brush-coated with 2 coats of zinc-rich paint. Apply in strict accordance with the manufacturer's recommendations. Paint over repaired surfaces to match monopole. STRUCTURAL STEEL NOTES 1. Design, Fabrication, Erection,Alteration and Maintenance shall conform to the following, unless noted otherwise(UNO). A. TIA-222: Structural standard for antenna supporting structures and antennas B. TIA-1019-A: Installation, alteration, and maintenance of antenna supporting structures and antennas C. AISC: Manual of steel construction 2. All structural elements shall conform to the following requirements, UNO. A. Structural steel,ASTM A572 grade 65(Fy=65ksi). B. All bolts,ASTM A325 type 1 galvanized high strength bolts. C. All nuts,ASTM A563 carbon and alloy steel nuts. D. All washers,ASTM F436 hardened steel washers. s lr; MORRISON HERSHFIELD 1455 Lincoln Parkway,Suite 500 3. Holes shall not be flame cut thru steel unless approved by the engineer of record. Atlanta,GA30346 Te1:770-379-8500 Fax:770-379-8501 NO. DATE DESCRIPTION BY www.monisonhershfield.corn 4. All fasteners shall not be reused. REVISIONS SITE NAME:MASONIC CENTER 5. A nut locking device shall be installed on all proposed and/or replaced ASTM A325 bolts. BU NUMBER:825709 WO NUMBER:2069806 SITE ADDRESS: 6. All proposed and/or replaced bolts shall be of sufficient length such that the end of the bolt be at least flush with the face 220 OLYMPIC BLVD. of the nut. it is notpermitted for the bolt end to be below the face of the nut after tightening is completed. SNOHOMI H OUN3 g g p SNOHOMISH COUNTY,USA INN WANG 7. Hot-dip galvanize all items, UNO. ��OF WA3glv ENG/QABY: KP/TH DATE: 03/01/22 Galvanize per ASTM A123,ASTM A153/A153M or ASTM A653 G90,as applicable. � � G>, DFT/QA BY: MV/MO DATE: 03/01/22 8. For a list of crown approved cold galvanizing compounds, refer to crown ENG-BUL-10149, "Tower protective coatings �r� APRVD BY: YW DATE: 03/01/22 bulletin". � �Gnf " 1 3. GS �' MH PROJECT:2200039.03/CN10-497R1 RALV, 9. After final inspection,all exposed structural steel as the result of this scope of work including welds,field drilled holes, �'' T��H `5 SCALE:N.T.S. and shaft interiors(where accessible), shall be cleaned and cold galvanizing applied by brush in accordance with crown VVeng ADDITIONAL ENG-BUL-10149, "tower protective coatings bulletin". photo documentation is required to be submitted to the MI Digitally xYeno5on Oate:yxll,IAed:W 05W' inspector. NOTES DETAIL DRAWINGS SHALL GOVERN REV OVER ANY VARIANCE FROM THIS SHEET S-4 0 1 r7