UFC 4-151-10
10 September 2001
2-2.11.1
Applicability. Timber, for the most part, no longer represents an
economically competitive alternative for the construction of bulkheads. Within the range
of structural applicability, aluminum and the burgeoning industry of plastic products
represent lower life cycle costs than timber in all but the most benign marine
environments. Therefore, the selection of timber will most probably be made based on
specific aesthetic parameters.
2-2.11.2
Treatment. Use timber sheet piling bearing the AWPA Quality Mark MLP.
The types of treatment are as described for treated timber piles.
2-2.11.3
Joints. Use tongue and groove or splined joints (or Wakefield Type
sheeting may be used). Install sheet piling tight to the mudline.
2-2.11.4
Drift Sharpening. Use drift sharpened timber sheet piling.
2-2.11.5
Tops of Sheets. Bolt tops of sheets to a continuous timber cap, with a
width equal to or greater than the thickness of the sheet piling. Where a concrete cap is
used, embed the sheets 152.4 mm (6 in).
2-2.11.6
Sleeves and Openings. Detail sleeves and openings through timber
bulkheads to preclude the loss of fill material.
2-12