Building Construction Handbook, Eighth Edition

Preformed Concrete Piles † jointing with a peripheral steel splicing
collar as shown on the preceding page is adequate for most
concentrically or directly loaded situations. Where very long piles
are to be used and/or high stresses due to compression, tension
and bending from the superstructure or the ground conditions are
anticipated, the 4 or 8 lock pile joint [AARSLEFF PILING] may be
considered.

hardwood or dense plastic

driving plate removed

steel dowel with

void for pin

treated steel

shutter and pile

lock bonded to

pile reinforcement

*upper section as lower section but
inverted and dowels located over holes

lower preformed

concrete pile

section*

high tensile

steel locking pin

Pile dimensions (mm) Possible No. of locks per joint

(^250) ¾ 250, 300 ¾ 300,
(^350) ¾ 350 and 400¾ 400

4

(^350) ¾ 350, 400 ¾ 400
and 450 ¾ 450

8

Piled Foundations