UFC 4-151-10
10 September 2001
2-1.2.5
Connection of Piles to Caps. The following requirements pertain to the
connection of piles to pile caps:
2-1.2.5.1
Timber Piles with Timber Caps
No Tension in piles - Secure pile tops to caps with spiral-drive drift pins or
steel straps.
Tension in piles - Secure pile top to clamp-type cap with thru-bolts with
spike grids.
2-1.2.5.2
Timber Piles with Concrete Caps
No Tension in Piles - Embed pile top 102 mm (4 inches) into cap and
secure with single #5 dowel driven into pile butt.
Tension in Piles - Secure pile tops with through-bolted dowel anchorage
2-1.2.5.3
Concrete Piles with Concrete Caps
No Tension in Piles - Embed pile top 102 mm (4 inches) into pile cap and
secure with deformed dowels or exposed pre-stressing strands as required
to develop a tensile load equivalent to one-half the pile's rated compressive
bearing capacity.
Tension in Piles - Embed pile top 102 mm (4 inches) into pile cap and
secure with deformed dowels or exposed pre-stressing strand as required
to develop the tensile structural capacity of the pile cross-section.
2-1.2.5.4
Steel Piles with Concrete Caps
No Tension in Piles - Embed pile top 102 mm (4 inches) (min.) into pile cap
and secure with deformed dowels welded to the pile (within the jacketed
length) capable of developing a tensile load equivalent to one-half the pile's
rated compressive bearing capacity.
Tension in Piles - Embed pile top 102 mm (4 inches) (min.) into pile cap and
secure with deformed dowels welded to the pile (within the jacketed length)
capable of developing a tensile load equivalent to the pile's rated
compressive bearing capacity.
2-1.2.6
Batter Piles. Make connections to adjacent piles or to the pile cap capable
of developing a tensile load equivalent to the smaller of the pile's compressive bearing
capacity or the tensile structural capacity of the pile cross-section.
2-4
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