RFI - D - Civil Engineering Response

ISSUES 12 & 13
The basement level of the proposed development extends across the full width of the
subject site and has the potential to cause ponding on the subject site and/or direct
surface runoff on to the adjoining properties. The submitted material does not
demonstrate how the proposed development achieves The Earthworks Code - Specific
Outcomes O1 and O2.

Information Required:
Demonstrate how the proposed development achieves The Earthworks Code - Specific
Outcomes O1 and O2

Provide a preliminary stormwater design for the proposed development. The design must
be prepared by a suitably qualified person and include but not be limited to:
       The existing overland flows and the proposed overland flows,
       Maintenance of overland flows within the subject site,
       The drainage system for the proposed roof areas, hardstand areas, grassed areas
       and pool surrounds.

RESPONSE
There are 0.96m wide landscape strips to each side of the subject site. This is sufficient
space to manage overland flow from major design storms beyond the capacity of the
building gutters. To demonstrate, the estimated catchment to the rear yard is determined
as follows:




Roof Catchment 105m2.




2008 – Margit Cres, Sunrise Beach                                                        3
CL/cl