SHEET PILING.'STEEL AND TIMBER
Steel sheet piling, including special fabricated sections, shall be of the types indicated on the drawings
and when in place, must be continuously interlocked throughout their entire length. The interlock feature
must permit free and easy threading. All piles shall be provided with standard handling holes located
approximately four inches below their tops. Each steel pile shall be free from kinks and shall not possess
camber, twist, or warp which would prevent easy and ready driving of the pile.
Wood piles shall be treated in accordance with recognized standards such as the American Wood
Preserves'-Association, Standard C18-77. The wood piles shall be pressure-treated with a minimum of
one pound of preservative salts per cubic foot followed by an addition treatment of no less than 20
pounds per cubic foot of creosote. Structural lumber shall be dual treated with 1.5 pounds per cubic foot
of preservative salts followed with a minimum of 20 pounds per cubic foot of creosote. The Contractor
shall make provisions for field treating all cuts, holes and abrasions in the piles and lumber. Such areas
shall be repaired using two brush coats of creosote followed by a heavy coat of tar paint. The lengths of
piles shall be as specified on the drawings.
Equipment shall be properly sized to permit driving to required penetrations without serious damage to
the piling. A protective pile cap shall be used during driving to prevent damage to the tops of the piles.
Spliced piles shall not be used.
QUALITY CONTROL
The Contractor shall establish and maintain a quality control system for all operations performed under
this contract to assure compliance with requirements. The Contractor shall also maintain records of his
quality control for all operations performed.
Figure 24. Sample Specifications
[Adapted From U. S. Army Corps of Engineers (1978c)]
A final precaution is to begin work at the appropriate season and allow sufficient time for
completion before the end of the construction season. Require firm commencement and completion dates
from the contractor and hold him to schedule as long as weather permits.
Safety
While safety considerations are generally matters of common sense, the chances for serious injury
and even death are increased when they are overlooked. Typical safety rules include:
1.
Safe access and working conditions must always be maintained
2.
A first aid kit should be available, and only those physically able to undertake the work should
participate. Children and other non-workers should be excluded from the site.
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