FDOT Standard Plans Index 455-440: Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP)

Design Criteria

Design Criteria AASHTO LRFD Bridge Design Specifications ; Fiber Reinforced Polymer Guidelines ( FRPG ) ; ACI 440.1R-06 Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars ; ACI 440.4 Prestressing Concrete Structures with FRP Tendons; FDOT Design Manual ( FDM ) ; Structures Design Guidelines ( SDG ) ; Structures Detailing Manual ( SDM )

Design Assumptions and Limitations

Design Assumptions and Limitations These piles are typically jetted into place rather than driven like a bearing pile. If shallow rock formations exist within the wall limits, other wall types must be considered. A cast-in-place reinforced concrete bulkhead cap is required to structurally tie the tops of the concrete sheet piles together.

These piles can be used for cantilevered walls or tied-back walls. Project specific designs and details are required for tie-backs. If the length of piles required for a cantilevered wall exceeds the limits shown on the standard drawings, consider using tie-backs.

These piles are intended for extremely aggressive environments. The grouted keyway used in combination with geotextile (the limits of both are defined by dimension "X") are assumed to not be watertight. Thus they contain the soil behind the wall while still allowing groundwater behind the wall to weep through.

No other separate weep holes are generally required. The bottom of the "X" dimension is required to be 1'-8" below the mud line. The tip elevation of piles shall be determined by the Geotechnical Engineer.

Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP) STRAND MATERIAL WALL THICKNESS (in.) STRAND DIA. (in.) SECTION MODULUS (in 3 ) STRESS * (psi) CFRP T=10 0.49 (12.5 mm) 500 730 0.5 (12.7 mm) 830 0.6 (15.2 mm) 840 T=12 0.49 (12.5 mm) 720 730 0.5 (12.7 mm) 700 0.6 (15.2 mm) 710 HSSS T=10 0.5 (12.7 mm) 500 790 0.6 (15.2 mm) 750 T=12 0.5 (12.7 mm) 720 780 0.6 (15.2 mm) 780 * Unit Prestress after losses @ Section B-B (see Sheet 2 for location of Section B-B) See additional information on the Standard.

General Notes

General Notes Sheet, specify the concrete class for the cast-in-place cap in accordance with the retaining wall environment classification. See SDG 1.4. Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP) Figure 1 Typical Cap Details Complete the following "Concrete Sheet Pile Wall with Prestressed Soil Anchors Data Table", "Concrete Sheet Pile Wall with Dead Man Anchors Data Table" or "Concrete Sheet Pile Wall, Cantilever Data Table" as applicable and include it on the supplemental sheets.

Complete the Notes and add/modify/delete as necessary. See FDM 115 for more information regarding use of Data Tables. Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP) Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP) Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP) Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP)

Payment

Payment Item number Item Description Unit Measure 400-2-8 Concrete Class II, Bulkhead CY 400-3-8 Concrete Class III, Bulkhead CY 400-4-8 Concrete Class IV, Bulkhead CY 415-10-AA Fiber Reinforced Polymer Bar (for Bulkhead) LF 451-70-AA Prestressed Soil Anchor EA 455-14-AA Concrete Sheet Piling LF 455-87 Anchor Bar, Steel EA See the BOE and Specifications for additional information on payment, pay item use and compensation. Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP)

Design Aids

Design Aids Index 455-440 Precast Concrete Sheet Pile Wall (CFRP/GFRP & HSSS/GFRP)

What your plans must show

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

• In the Structures or Roadway Plans: Prepare Wall Control Drawings and related drawings as specified in SDM Chapter 19 and FDM 262 and include them in the plans. Use combinations of straight and corner piles to accommodate project specific geometric requirements. Generally, Type “A” CFRP or HSSS strand prestressed piles are both acceptable in all environments and use is at the option of the Contractor unless project specific needs limit the type to only one prestressing strand material. Show one Starter Pile location for a given wall. In the Elevation View, show the wall construction sequence proceeding away from the Starter Pile by locating the 11" by 11" corner clip on each Typical Pile on the side farthest away from the Starter Pile. Consider necessary tie-ins with adjacent structures and other boundary restrictions when selecting the Starter Pile location. Prepare project specific cast-in-place concrete bulkhead cap, tie-back and utility accommodation details and include them in the plans. See Figure 1 for typical cap details. In the