New standard drawings SPP1 and SPP1SM have been developed and are available for immediate use. The PP 18 x 0.50 (PP 457 x 12.70) steel pipe pile allows the Soils and Foundation Section additional flexibility in developing the Foundation Recommendations. In general, pipe piles may be recommended either to avoid drilled piers or when driving 16" (406 mm) prestressed concrete piles would be difficult. Pipe piles are not intended for use in Corrosive Sites. These piles will be specified on a case by case basis; therefore, consult with the Soils and Foundation Section for a preliminary pile capacity.

The standard foundation recommendation notes that apply to steel piles shall also be used for pipe piles. Pipe piles shall be battered only when required by the Foundation Recommendations. The Soils and Foundation Section will specify a pile with either a closed or open end. Show only the appropriate plan and elevation views. The thickness of the driving plate, required for closed end driving, and any additional notes will be specified on the Foundation Recommendations.

A bill of material containing the reinforcing steel and concrete for one pile plug is shown on the standard drawings and should not be included in the quantities for the bent. The length of "PP 18 x 0.50 (PP 457 x 12.70) Steel Piles" in linear feet (meters) shall be shown on the bent and total bills of material. The notes are written such that project special provisions for Pipe Piles and Painting Steel Piles are not required with these standard drawings.

This policy is effective immediately. The standard drawings are available on both the Sd drive (S:) and the Structure Design Homepage. The Design Manual and NCBDS will be revised at a later date.

TVR/LES/crl

Attachments

1.English "Standard Pipe Details".

2.Metric "Standard Pipe Details".