Technical Resources

Timber Pile Design Values

 

Property

Compression Parallel to Grain, Fc :

Extreme Fiber in Bending, Fb :

Horizontal Shear, Fv :

Compression Perpendicular to Grain, Fcꓕ :

Modulus of Elasticity, E :

Southern Pine (psi)

1,250

1,950

160

440

1,500,000

Douglas Fir (psi)

1300

2,050

160

490

1,500,000

 

Values are from ANSI/AF&PA NDS-2012, National Design Specification for Wood Construction, Supplement for Timber Piles and Poles.

  • Values are consistent with those listed in the TPC Timber Pile Design and Construction Manual and subject to the same service conditions listed therein.

  • Southern pine values apply to longleaf, slash, loblolly and shortleaf pine.

  • Douglas fir values apply to Pacific Coast Douglas fir.