07/1173 - Operational Works - Transport Type 6 - Refurbishment of Boathouse & Jetty [As Published] · 142007.1173

11/08 °03 MON 09:45 FAX O7 4938 1708 ROCLA POLES QLD Te . Ss Zooz
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Structural Specification for Standard Rocla Spun Concrete Marina Piles

The following lists the essential requirements for standard Rocla Spun Concrete
Piles used as cantilever elements in floating marinas :

1. Standard Rocia Marina piles ere manufacured as spun, prestressed concrete
elements to a QA system in accordance with 1S09002,

2, The minimum design service life of a pile is 20 yrs based on the following list of
critical durability factors and design assumptions :

a/ the Spun concrete characteristic compressive strength at 28 days
= 65 MPa (min). ‘

J. b/ (as defined in AS3600) Exposure classification C applies to the extemal pile
surface and Exposure classification B1 to the interna! surface. Sea water must not be

allowed inside the pile.
c/ the minimum extemal cover to structural stee! reinforcement = 25mm.
d/ the minimum intemal cover to structural steel reinforcement = 15mm.
@/ the spun concrete has a watel/cement ratio less than 0.35.

ff the piles are initially cured so that the average concrete compressive strength
is at least 32 MPa before being stripped from the mould.

g/ a corrosion inhibitor in suitable proportion is added to the concrate,

hy allloads and stresses, including those from handling, are assumed to ba
within the scope of the piles capability.

3. The reinforcement iypically comprises of Hard Drawn wire to AS1303, prestressing
strands to AS13141 and BHP Tempcored K10M40 bar.

4. Pile strengths are based on proven Rocia design methods and load tests. The pile
strength designation refers to the minimurn Ultimate Bending Moment strength provided
near the toe end of the pile. Refer to the specific BM and Shear Force strength
diagrams associated with each specific pile type. These designs are intended to suit
the typical pile cantilever applications involved in floating Marinas.

C.Carter BE(civil) 1/5/99

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