Quite a number of core tests had
been conducted on the completed piling for the first of
the two buildings with satisfactory results. HD therefore
agreed to the site agent's proposal that core tests for
the second building should be carried out on only two
piles out of the total of 18, although all 18 piles would
be subject to vibration tests. This arrangement was presented
as a time saving measure.
It was also an arrangement that opened the way to yet
further deception. The site agent
employed a contractor to conduct vibration tests on the
designated piles in late October 1998. However, a witness
stated that the testing staff were deliberately steered
towards piles that were in fact known to have met standards.
This contractor's eventual conclusion was as follows:
"The piles are proven continuous to the pile toe and are
therefore regarded as being of acceptable integrity."
3Translated from the Legislative
Council Select Committee Report on Building Problems of
Public Housing Units, p. 107