Welcome
Hello
everyone and welcome to the May edition of “Keep Things Flowing”,
the monthly newsletter presented by Storm Water Consulting.
In this
month’s issue of Keep Things Flowing, we provide an update on the
recent Council approvals for the SPELFilter and we take an in depth
look at Section A of BCC”s Flood Overlay Code.
SPEL Approvals
Over the
past 18 months the stormwater quality industry has seen significant
changes. Councils across South East Queensland have started to
approve and accept the use of different tertiary stormwater
treatment devices. One such new device is SPEL’s “SPELFilter”. We
presented information about this device in one of our newsletters
last year. Just in case you forgot what a SPELFilter is, we’ve
provided you with a short summary below.
The SPELFilter
is pictured and described* below.
*SPEL’s
description of the product
The SPELFilter
has an upflow treatment process, through a spiral wrapped media
configuration that maximises surface area. The benefit is excellent
pollutant removal in a small footprint. Hydraulic pressure forces
water through the filter media, discharges through the centre tube
and out through the outlet collection manifold. Upon completion of
a treatment cycle, each cartridge backwashes and effectively
dislodges particulates from the filtration layers. This
re-establishes filter porosity. The dislodged particles accumulate
on the vault floor for easy removal during maintenance.
The SPELFilter
system can be housed in a variety of structures including manholes,
precast vaults, or cast-in-place structures.
SPEL have
informed us that the SPELFilter has officially been approved for
use in the following Councils within SEQ:
·
Brisbane
City Council;
·
Redlands
City Council;
·
Ipswich
City Council;
·
Gold
Coast City Council;
·
Moreton
Bay Regional Council;
·
Sunshine
Coast Council;
The extra
competition within the stormwater quality industry will ensure that
developers will benefit with reduced costs and better performance
of stormwater quality treatment products. A range of stormwater
treatment products can be viewed on the following websites.
Stormwater360
– http://www.stormwater360.com.au/
SPEL – http://spel.com.au/
HUMES – http://www.humes.com.au/
ECOSOL - http://www.ecosol.com.au/
If you
require stormwater quality treatment for your development please
contact our office and we would be more than happy to assist you
with your query.
BCC’s Flood
Overlay Code
We often
work with clients that are involved in projects dealing with a
single dwelling (within Brisbane City Council). In July 2014
Brisbane City Council released a new Cityplan which requires the
Flood Overlay Code to be addressed when a development property is
located within a Flood Planning Area. Section A of the Flood
Overlay Code is to be addressed for self-assessable and assessable
development of a dwelling house including any secondary dwelling. There
are four items that need to be addressed to comply with Section A
of the Flood Overlay Code.
1.
The
velocity of flood water must be determined. The velocity is used to
ensure the foundations of the dwelling are constructed in
accordance with the Queensland Development Code requirements. We
are able to determine the flow velocity of the flood water.
2.
Minimum
finished floor level requirements must be met. The Flood Overlay
Code requires habitable and non-habitable floor levels to be set
500mm and 300mm (respectively) above the governing flood level
affecting the site. SWC is able to identify the governing flood
level affecting the property and set minimum finished floor levels.
3.
Dwellings
with suspended floors that are impacted by flood water are required
to provide 1.5-2.5m of undercroft clearance height. If you are
unable to achieve this then a performance outcome solution may be
provided to support a lower undercroft height. An assessment of the
flooding characteristics is required to support a lower undercroft
height.
4.
The
development must not create an adverse impact on neighbouring
properties. Blocking or diverting flood water has the potential to
create adverse impacts to neighbouring properties. An assessment of
the proposed development is required to determine any impacts and if
necessary, design a strategy to mitigate the impacts.
If you have
a development located within a BCC Flood Planning Area we would be
pleased to provide our assistance with the application.
Wrap Up
We hope you
enjoyed this edition of Keep Things Flowing. Feedback on articles
presented is always welcomed and for further information on any of
the articles presented please don’t hesitate to contact our office.
As always,
Keep Things Flowing!
The Storm Team
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