07/1173 - Refurbishment of existing jetty and boathouse - att drawings [As Published] · 142007.1173

11/08 ‘03 MON 08:43 FAX 07 4936 1708 ROCLA POLES QLD Tou Eooz
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Structural Specification for Standard Rocia Spun Concrete Marina Piles

The foliowing lists the essential requirements for standard Roca Spun Concrete
Piles used as cantilever elements in floating marinas ;

1. Standard Rocia Marina piles are manufacured as spun, prestressed concrete
elements to a QA system in accordance with ISO3002.

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

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

f/ 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 concrete.

h/ allloads and stresses, including those from handling, are assumed to be
within the scope of the piles capability.

3. The reinforcement typically comprises of Hard Drawn wire to AS13035, prestressing
strands to AS13114 and BHP Tempcored K10M40 bar.

4. Pile strengths are based on proven Rocla design methods and toad tests, The pile
strength designation refers to the minimum Ultimate Bending Moment strength provided
near the toe end of the pile. Refer tc 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) 1/3/99

pilespe3.doc