FDOT Standard Plans Index 641-010: Concrete Poles

Design Criteria

Design Criteria AASHTO LRFD Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals (LRFDLTS - 1) ; Structures Manual (SM) , Volume 3, FDOT Modifications to LRFDLTS - 1 ; Structures Manual (SM) I ntroduction, I.6

Design Assumptions and Limitations

Design Assumptions and Limitations See FDM 261 and Structures Manual (SM) , Volume 3 for additional design criteria . The following computer - based design program is available for use on the Structures Design Office Website : • University of Florida Bridge Software Institute ATLAS Program v7 or higher . For Pole Types P - III through P - VIII, design poles within the following limits: • 30 ft.

≤ Length (L) ≤ 65 ft. • Pole Height (H) ≤ 50 ft. Foundations may be designed assuming a 3’ - 6” diameter (See Specification 641 ) .

The foundation depths for the following poles must be designed but may be no shallower than the following minimums: • Pole Types P - III through P - V 7 feet • Pole Types P - VI 8 feet • Pole Types P - VII through PVIII 9 feet Foundations are designed using the following soil criteria: Classification: Cohesionless (Fine Sand) Friction Angle: 30 Degrees Unit Weight: 50 lbs/cubic foot (assumed submerged) For Pole Types P - II and P - III, nominal moment capacity may be estimated as: Note: Refer to LRF D Bridge Design Specifications for definition of variables. a s d f M n es timate ( ) A ps f pu ⋅ d p ⋅ 1 0.59 A ps b d p ⋅ ⎛ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎠ f pu f c ⎛ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎠ ⋅ − ⎡ ⎢ ⎢ ⎣ ⎤ ⎥ ⎥ ⎦ ⋅ = Index 641 - 010 Concrete Poles Determine maximum loads to be placed on poles, and select the required pole type meeting the requirements of Table 641 - 1 ( shown on the next page) .

Payment

Payment Item number Item Description Unit Measure 641 - 2 - AB Prestressed Concrete Poles EA See the BOE and Specification 641 for additional information on payment, pay item use and compensation.

What your plans must show

Plan Content Requirements for this index — the SPI's checklist for designers.

• Complete the " Strain Pole Schedule " provided with the FDOT CAD Bar Menu , Linked Data Manager, and include in the Roadway Plans. Signalization Plans: See the FDM 941 . Include poles in “ Tabulation of Quantities ” . Table 64 1
• - 1 Factored Flexural Resistance M r = Ø M n * at Finish ed Grade H (feet) Type of Strain Pole P
• - ft) 20 84 150 184 263 350 22 88 155 190 271 359 24 92 161 195 279 368 26 96 166 201 286 378 28 100 172 207 294 387 30 104 178 212 301 397 32 109 183 218 309 406 34 113 189 224 316 415 36 117 195 229 324 425 38 121 200 235 332 434 40 125 206 241 339 443 42 130 212 246 347 453 44 134 217 252 354 462 46 138 223 257 362 471 48 142 228 263 369 481 50 146 234 269 377 490 * M r ≥ Mu