Laserfiche WebLink
January 30, 2023 <br /> 12.5 ft Sector Frames Mount Replacement Analysis CCI BU No. 856390 <br /> Order 628726; Rev. 1 Page 4 <br /> 3) ANALYSIS PROCEDURE <br /> Table 2—Documents Provided <br /> Document Remarks Reference Source <br /> Mount Analysis Kimley-Horn 10687916 CCISites <br /> Structural Analysis TEP 9990221 CCISites <br /> Supplemental Loading AT&T Mobility RFDS 12/14/2022 TSA <br /> Mount Design Drawings CommScope SFG22HDX12-4-H10(ANT.44323) On File <br /> 3.1) Analysis Method <br /> RISA-3D (v. 17.02.00), a commercially-available analysis software package, was used to create a three- <br /> dimensional model of the antenna mounting system and calculate member stresses for various loading cases. <br /> A proprietary tool internally developed by Kimley-Horn was used to calculate wind loading on all appurtenances, <br /> dishes and mount members for various load cases. Selected output from the analysis is included in Appendix B. <br /> This analysis was performed in accordance with Crown Castle's ENG-SOW-10208 Mount Analysis(Rev. E). <br /> 3.2) Assumptions <br /> 1) The antenna mounting system (including any considered modifications) was properly fabricated, installed <br /> and maintained in good condition in accordance with its original design and manufacturer specifications. <br /> 2) The configuration of antennas, mounts, and other appurtenances are as specified in Table 1 and the <br /> provided reference information. <br /> 3) All member connections are assumed to have been designed to meet or exceed the load carrying <br /> capacity of the connected members unless otherwise specified in this report. <br /> 4) The analysis will be required to be revised if the existing conditions in the field differ from those shown in <br /> the above-referenced documents or assumed in this analysis. No allowance was made for any damaged, <br /> missing, or rusted members that could not be verified at this time. <br /> 5) Any referenced prior structural modifications to the tower mounting system are assumed to be installed as <br /> shown per available data unless noted otherwise. <br /> 6) Steel grades have been assumed as follows, unless noted otherwise: <br /> Channel, Solid Round, Angle, Plate ASTM A36 (Gr. 36) <br /> HSS (Rectangular) ASTM A36 (Gr. 36) <br /> Pipe ASTM A53 (Gr. 35) <br /> Connection Bolts ASTM A325 <br /> U-Bolts ASTM A36 (Gr. 36) <br /> Threaded Rods ASTM A36 (Gr. 36) <br /> If any assumptions are not valid or have been made in error, Kimley-Horn should be notified to determine <br /> the effect on the structural integrity of the antenna mounting system. <br /> ENG-FRM-10208, Rev. E <br />