TNAG-1613-FCO40-2221-Executive-Council-of-Hong-Kong-memoranda-and-minutes-of-meet-1987 — Page 252

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Table 2 Source Sound Power Levels for

Percussive Piling

Piling Method* and Pile Type

Sound Power Level

(dB(A))

internal drop hammer

113

drop hammer driving concrete pile

116

drop hammer driving steel pile

126

diesel hammer driving pre-stressed

concrete pile

128

drop hammer driving sheet steel pile.

129

single acting hammer driving steel pile

130

diesel hammer driving steel pile

132

diesel hammer driving sheet steel pile

132

double acting hammer driving sheet

steel pile

135

* These terms are defined in Section 1.3