FDOT Standard Plans Index 649-010: Steel Strain Pole

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) Introduction, I.6

Design Assumptions and Limitations

Design Assumptions and Limitations See FDM 261 and Structures Manual (SM) , Volume 3 for additional design criteria. Use Index 649-010 in conjunction with the following design programs available for use on the Structures Design Office Website : • FDOT Strain Pole Program • University of Florida Bridge Software Institute ATLAS Program Foundation designs are based on the following conservative soil criteria which cover the great majority of soil types found in Florida: Classification = Cohesionless (Fine Sand) Friction Angle = 30 degrees Unit Weight = 50 pcf (assumed submerged) When the designer considers soil types at the specific site location to be of lesser strength properties than shown above, an analysis is required. Auger borings, SPT borings, or CPT soundings may be used as needed to verify the assumed soil properties, and at sites confirmed to be uniform, a single boring or sounding may cover several foundations.

Borings in the area that were performed for other purposes may be used to confirm the assumed soil properties. Determine maximum loads placed on poles and select the required pole type meeting the requirements of: Factored Flexural Resistance (M r ) = Φ M n , Where M r > M u Factored Flexural Resistance at Pole Bottom (kip*ft): Pole Type PS-IV PS-V PS-VI PS-VII PS-VIII PS-IX PS-X M r 160 270 340 450 540 620 730 Index 649-010 Steel Strain Pole

Payment

Payment Item number Item Description Unit Measure 649-1-ABC Steel Strain Pole EA See the BOE and Specification 649 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.

• Roadway Plans: 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 . Summarize poles in “ Tabulation of Quantities” .