1118 80TH ST SW BASE FILE 2018-09-18

Page ` � �, .� �� Job Paine Field (BU 856390) 1 of 20 Tower Engineering Project Date Professionals TEP No. 62974.134464 11:27:41 09/29/17 326 Tryon Road Raleigh,NC 27603 Ciient Desi ned b Phone:(919)661-6351 Crown Castle 9 y FAX:(919)661-6350 mtweavil ' 'Tower ln ut Da�a The main tower is a 3x free standing tower with an overall height of 100.00 ft abpve the ground line. The base of the tower is set at an elevation of 0.00 ft above the ground line. The face width of the tower is 6.78 ft at the top and 15.59 ft at the base. This tower is designed using the TIA-222-G standard. The following design criteria apply: Tower is located in Snohomish County,Washington. Basic wind speed of 85 mph. Structure Class II. Exposure Category C. Topographic Category 1. Crest Height 0.00 ft. Nominal ice thickness of 0.2500 in. Ice thickness is considered to increase with height. Ice density of 56 pcf. A wind speed of 30 mph is used in combination with ice. Temperature drop of 50°F. Deflections calculated using a wind speed of 60 mph. Wind Analysis. Pressures a��e calculated at each section. Stress ratio used in tower member design is 1. Local bending stresses due to climbing loads,feed line supports,and appurtenance mounts are not considered. O t10nS Consider Moments-Legs Distribute Leg Loads As Uniform Use ASCE 10 X-Brace Ly Rules Consider Moments-Horizontals Assume Legs Pinnecl � Calculate Redundant Bracing Forces Consider Moments-Diagonals � Assume Rigid Index Plate Ignore Redundant Members in FEA Use Moment Magnification � Use Clear Spans For Wind Area SR Leg Bolts Resist Compression � Use Code Stress Ratios Use Clear Spans For KL/r All Leg Panels Have Same Allowable � Use Code Safety Factors-Guys Retension Guys To Initial Tension Offset Girt At Foundation Escal�te Ice � Bypass Mast Stability Checks � Consider Feeci Line Torque Always Use Max Kz � Use Azimuth Dish Coefficients � Include Angle Block Shear Check Use Special Wind Profile � Project Wind Area of Appurt. Use TIA-222-G Bracing Resist Exemption � Include Bolts In Member Capacity Autocalc Torque Arm Areas Use TIA-222-G Tension Splice Exemption Le Bolts Are At To Of Section Add IBC.6D+W Combination � I„„��,,, ��` � P �� ,�_:.y�, �,.��?�� ,�,��r��F� � Secondary Horizontal Braces Leg � Sort Capacity Reports By Component Include Shear-Torsion Interaction Use Diamond Inner Bracing(4 Sided) Triangulate Diamond Inner Bracing Always Use Sub-Critical Flow SR Members Have Cut Ends Treat Feed Line Bundles As Cylinder Use Top Mounted Sockets SR Members Are Concentric