Council archive · source document
Traffic Engineering Report part 1 · MCU18/0094
Attached to the e-mail Multiple Housing Type 4 Conventional - 4 units (Covering letter, DA Form 1, Eng Plans, Eng Report, Owners Consent, Planning Report , Traffic Report) - MCU18/0094.
Traffic Engineering Report
1723 Garnet
Townhouse Development
Traffic Engineering Report
Prepared for Morriarchi Architecture
03 June 2018
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Traffic Engineering Report – 1723 Garnet © Copyright RoadPro Engineering. This report has been prepared for the exclusive use of the commissioning party and unless otherwise agreed in writing by RoadPro Engineering, no other party may copy, reproduce, distribute, make use of, or rely on the contents of the report. RoadPro Engineering accepts no liability for any use of this report, other than for the purposes for which it was originally prepared and provided. www.roadpro.net.au Page i
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Traffic Engineering Report – 1723 Garnet
Document control
Version history:
Version no. Date Changed by Nature of amendment
Kirk Jackson
Draft V1 11.05.2018 Initial draft
RPEQ 10980
Kirk Jackson
V1 03.06.2018 Amended dwelling details
RPEQ 10980
Contact for enquiries
Please direct any queries regarding the preparation of this document to:
Contact officer: Kirk Jackson
Director
Roadpro Engineering
Email: [email protected]
Web: www.roadpro.net.au
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Traffic Engineering Report – 1723 Garnet
Table of contents
1 Introduction ............................................................................................................................. 4
1.1 Background ............................................................................................................................... 5
2 On-site Parking ........................................................................................................................ 6
3 Driveway and Site Access ........................................................................................................ 7
3.1 Site Access Location .................................................................................................................. 7
3.2 Site Access and Driveway Type ................................................................................................. 7
4 Conclusion and Recommendations ......................................................................................... 9
Appendix A Driveways and Car Parking Code Assessment ...............................................................10
Appendix B Vehicle Swept Paths .........................................................................................................13
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Traffic Engineering Report – 1723 Garnet
1 Introduction
RoadPro Engineering has been commissioned by Morriarchi Architecture on behalf of the developers,
The Whatham Boys Property Trust to assess site access and parking facilities proposed for the
townhouse development.
Property address: 15 Garnet St COOROOY QLD 4563
Property description: Lot 901 C56011
Proposal description: Material Change of Use – Residential Use Multiple Housing Type 4
Conventional (1 x 3 Bedroom & 3 x 2 Bedroom Townhouses)
Local government: Noosa Council
The site is located on the corner of Garnet Street and Wattle Street, Cooroy as shown in Figure 1.
Figure 1
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Traffic Engineering Report – 1723 Garnet
1.1 Background
A pre-lodgement meeting was attended with Noosa Council representatives on 20 March 2018. The
following matters of concern/interest regarding car parking and access were raised by council officers:
Traffic and access
· Not comfortable with the visitor space right on the front boundary with regard to potential conflicts
and on-site manoeuvring.
· The remainder of the access driveway will need to demonstrate that vehicles can pass.
· Concerns at the bend in the driveway and the ability for vehicles to pass and see around the corner.
This traffic engineering report will address these items of concern as well as assess the proposed
parking and access provisions for compliance with Council planning code for Driveways and Car Parking
and AS2890.1 Off Street Car Parking.
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Traffic Engineering Report – 1723 Garnet 2 On-site Parking The proposed development provides 9 parking spaces for the 1 x 3 bedroom and 3 x 2 bedroom townhouse units. The parking spaces are arranged as shown in Figure 2, with each townhouse having a double lock-up garage. There is one visitor space provided on site. There are no parking spaces dedicated to PWD as this is a private car park. The number of parking spaces accords with Noosa Council planning code minimum requirements. The dimensions of the double lock-up garages comply with the minimum requirements of AS2890.1. The dimension of the visitor car park space is 2.5m wide and 5.4m in length. This bay is adjacent to the boundary fence and has therefore been provided with an additional clearance allowance for access to the bay and to allow doors to be opened. The width of the parking apron to the rear of the building provides for access and manoeuvring into and out of the parking spaces as the swept path diagrams provided in Appendix B show. The swept path diagrams show a reverse entry manoeuvre into all the garage bays and a forward entry into the visitor bay. The exit from Bays 1A and 1B (in a forward direction) require a three point manoeurve due to their proximity to the driveway entry. This is considered acceptable for a private carpark. The remaining garage bays can be exited in a single forward manoeuvre. The visitor bay requires a three point reverse manoeuvre to exit the bay. This is considered acceptable for a private carpark. Due to space limitations on-site, there is insufficient width on the apron for a vehicle to enter and leave the site in a forward direction without the use of one of the parking bays. As this is a private carpark this is considered acceptable. There are no provisions for service vehicle loading/unloading on site. Council code does not require on- site loading/unloading facilities for this type of land use. Service vehicle trip generation for this type of land use is expected to be very low and it is expected that service vehicles will be able to park in the street as required. Waste collection services will do kerbside pickup of individual refuse and recycling bins and therefore no property access is required for this service. www.roadpro.net.au Page 6
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Traffic Engineering Report – 1723 Garnet
3 Driveway and Site Access
3.1 Site Access Location
The driveway for this site accesses Wattle Street which a local access street. The number of traffic
movements on this driveway during peak times is not expected to exceed three vehicles per hours (0.65
movements per hour per dwelling)1 This number of movements is not expected to cause any impact on
the existing traffic performance or safety on Wattle Street or at the intersection of Wattle Street and
Garnet Street.
The location of this driveway access to Wattle Street is within the envelope of the intersection of Wattle
Street and Wimmers Lane and while this location does not comply with the requirements of AS2890.1,
given the very low traffic volumes on the driveway and at this intersection and considering that there are
no other positions available for site access for this proposed site layout, this position is considered
acceptable.
3.2 Site Access and Driveway Type
This driveway is considered to be a low volume residential access fronting a low volume local street and
hence, in accordance with AS2890.1 Table 3.1, the type of driveway facilities required is a Category 1
facility. For Category 1 facilities the minimum width requirement for the driveway and circulation
roadway is 3.0 metres. In this instance, as the driveway is located against the fence line, an additional
width or clearance to the fence of 300mm should be provided. The proposed driveway narrows from
approximately 3.6m at the property boundary to approximately 2.6 metres at the narrowest point mid-
way along the driveway. This has been done to achieve greater landscaping areas on the site and is not
considered to be detrimental to the safety or amenity of the operation of the driveway provided the
species used for landscaping will not restrict the driveway width or reduce sight lines in the future. The
swept path diagrams provided in Appendix B show vehicles can negotiate this driveway. The length of
this driveway is approximately 14 metres from the western property boundary to the parking apron at the
rear of the building as shown in Figure 2. The width of the proposed driveway is considered adequate.
The proposal provides for a 6.0 metre wide, two-way kerb crossover and driveway from the road to the
property boundary. It is expected that residents, if necessary, would be able to stop on the driveway and
wait for any vehicles exiting the complex. Similarly residents would be able to stop on the parking apron
behind the building to wait for any vehicles entering the complex. The swept path diagrams in Appendix
B show this arrangement. This arrangement is considered appropriate given the low volumes of traffic
expected to be using the driveway and the speeds at which they are expected to be travelling. For this
arrangement to operate successfully, however, it is necessary for vehicles approaching the driveway
from either direction to be able to see traffic approaching from the other direction and therefore a
parabolic traffic mirror should be installed in an appropriate position, generally, as shown on the plans.
Additionally, it is recommended that signs are provided at the holding bays to direct approaching drivers
to yield to other vehicles entering or leaving the property.
The driveway crossover should be constructed in accordance with Noosa Council Standard Drawings.
1
Reference – RTA Guide to Traffic Generating Developments (Medium density residential)
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Traffic Engineering Report – 1723 Garnet
Figure 2
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Traffic Engineering Report — 1723 Garnet
Figure 2
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Traffic Engineering Report – 1723 Garnet
4 Conclusion and Recommendations
RoadPro Engineering has assessed the provisions proposed for vehicular access and parking
associated with the proposed townhouse complex located at 15 Garnett Street Cooroy.
RoadPro Engineering considers that the current layout has addressed councils points raised at the pre-
lodgement meeting. In summary,
· The fence adjacent to the visitor parking bay has been repositioned to the property boundary so
that access and egress is now possible (refer swept path diagrams) and the bay is now wide
enough to permit vehicle door opening.
· The proposed driveway provides for two-way traffic on a single lane and as such it will not be
possible for vehicles to pass whilst on the driveway, however, given the low number of trips
generated by this development a single lane access driveway is consistent with the requirements
of AS2890.1.
· It has been demonstrated (refer swept path diagrams) that the single lane access driveway with
holding bays at the front and rear of the property provides sufficient width for vehicles to enter
and leave with other vehicles in the holding bays. The provision of a convex mirror at the rear of
the property will allow drivers at the rear of the building preparing to exit the property to see other
vehicles on the driveway.
The proposed car park and property access arrangements are considered to be satisfactory.
.
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Traffic Engineering Report – 1723 Garnet
Appendix A
Driveways and Car Parking Code Assessment
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Traffic Engineering Report – 1723 Garnet
Specific Outcomes Probable Solutions Assessment Response
14.112 General
O1 Vehicular access does not adversely S1.1 Vehicular access is located and O1 – Complies
impact on safety capacity and operations of designed in accordance with Vehicular access is designed in accordance
the existing or planned road network, the AS/NZS2890.1:2004; with AS2890.1, however location is not refer
proposed driveway, cycleways or pedestrian AND to commentary in Section 3.1 of this report;
pathway systems. S1.2 Only one footpath crossing is provided; Only one footpath crossing provided;
AND No issues with driveway grade
S1.3 Driveways, have a maximum grade in
accordance with Council’s standard
requirements
O2 Driveways and crossovers – S2.1 Design of the driveway across the O2 – Not verified
a) Are suitable and safe for their footpath is in accordance with Council’s Details of Driveways and crossovers to be
intended use; and Standard Drawing requirements as provided in engineering drawings
b) Match Council infrastructure appropriate for the particular type of
development as annotated on the drawings;
S2.2 Driveways are designed and
constructed in accordance with Council
Standard Drawing requirements as
appropriate for the particular type of
development as annotated on the drawings;
S2.3 The change in grades in the driveway
and ramps is in accordance with Council
Standard Drawing requirements
O3 In commercial zoned areas, the number S3.1 Design of multi-tenanted developments O3 – Not applicable
of driveways across pedestrian footpaths is in commercial zoned areas include shared
minimised driveways and parking areas;
AND
S3.2 Driveways are located so they abut
existing driveways of adjoining development
where practicable and reciprocal easements
are created to reduce the sealed driveway
width.
O4 Vehicular access does not adversely S4.1 Footpath and kerb crossings are O4 – Not verified
impact on the capacity, operations and located clear of existing stormwater inlet Details to be provided in engineering
maintenance of the existing infrastructure; structures, water and sewage infrastructure drawings
AND fittings, any other exiting utility infrastructure,
O5 Vehicular access does not adversely existing landscaping and vegetation.
impact on the health and integrity of existing S5.1 Vehicular access avoids disturbance to
landscaping or native vegetation, where the tree protection zone of trees on public
possible. land
O6 Driveway run-off is filtered prior to leaving S6.1 For – O6 - To be confirmed by other
the premises a) Ancillary dwelling unit, Multiple
housing Type2 if less than 5
carparking spaces, Visitor
accommodation Type 1 and Home-
based business Type 3 the driveway
is formed to drain to the landscaped
areas; and
b) For other uses – grease and oil
arrestors or stormwater quality
improvement devices are
incorporated into run-off exiting from
the premises
14.113 Carpark design and layout
O7 Sufficient carparking is provided to S7.1 The number of parking spaces and O7 – Complies
accommodate the number and type of loading bays is not less than the minimum The number of bays provided meets the
vehicles likely to be generated by the number specified in Table 14-51 Vehicle minimum number required to be provided.
development having regard to the specifics of Parking Requirements;
the use including
a) The type and intensity of land use;
b) Any existing parking available on the
site;
c) Hours of operation;
d) Likely number of users;
e) The peak parking demand periods of
uses on the site; and
f) The availability of alternative
carparking
O8 The layout of the development provides S8.1 Parking bays, manoeuvring areas, O8 – Complies
adequate, clearly defined and easily queuing areas, loading, setdown and pickup
accessible- areas and driveways are designed to the
a) On-site vehicle parking and standards set out in AS2890.1 and
manoeuvring areas; and AS2890.2.
b) Loading and manoeuvring areas for AND
delivery and service vehicles. S8.2 The number of loading bays is not less
than the minimum number specified in Table
14-51.
O9 Parking areas are located where they will S9.1 Carparking areas are accessed from O9 - Complies
not unduly conflict with pedestrians and will rear laneways where practicable.
not dominate the streetscape
O10 Provision is made for a reasonable S10.1 Carparking spaces are provided for O10 – Not applicable
number of on-site carparking spaces people with disabilities at the rate specified in
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Traffic Engineering Report ry
identified and reserved for people with the Australian Standards for Off-Street
disabilities. Carparking
O11 Access and egress points do not impact S11.1 Vehicle manoeuvring areas are O11 – Does not comply
on the safety and operations of the road provided in accordance with Australian There are no dedicated areas on-site for the
system Standards for Off-Street Carparking so purposes of turning around other than
vehicles can enter and leave the site in a parking bays and therefore if these are
forward gear. unavailable for use vehicles may not be able
to turn around on site. Given the low number
of trips generated by this site and also that it
is a private car park, this is not considered to
have a significant impact on the safety of the
road system at the access/egress point.
O12 Parking areas are designed to – S12.1 At locations where pedestrian and O12, O13, O14 & O15 – Not relevant
Provide a progressive reduction in speed vehicle conflicts are likely to occur –
between the external road and internal a) Sight distances of at least 2.5
parking spaces; seconds of travel time at the
Ensure lower speeds near areas of high designated speed are provided;
pedestrian activity through the use of b) Splayed corners on structures are
appropriate road geometry or devices incorporated;
designed to limit speed; and c) Landscaping is designed to allow
Maintain sight distances which are clear views; and
appropriate for the likely operating speeds in d) Sign placement ensures that sight
all areas of potential pedestrian/vehicle and distance requirements are not
vehicle/vehicle conflict impeded.
O13 A clearly defined pedestrian network is S13.1 In large open car parks with greater
provided that – than 200 car parking spaces, a pedestrian
a) Is located in areas where people will path between parking spaces is provided on
choose to walk; every second aisle.
b) Ensures that pedestrian movement
through car parking areas or
structures are along aisles rather than
across them
O14 Provision is made for pedestrian and S14.1 No probable solution identified;
vehicular queues at conflict points.
S15.1 Lighting is provided in accordance with
O15 Parking areas are lit to provide security the Australian Standard for Road Lighting –
for night-time users. Vehicular Traffic (Category V) Lighting -
Performance Installation and Design
Requirements
O16 In mixed use areas of Business centres S16.1 Resident carparking is limited to one O16 – Not applicable
residents do not compete with customers for space per dwelling unit or accommodation
carparking spaces unit;
AND
S16.2 Resident carparking is not located in
the road reserve or between the residential
or business building and the principal street
frontage.
O17 Car parking areas are landscaped to – No solution provided O17 – Not relevant
a) provide shade;
b) maximise infiltration of stormwater
run-off;
c) define parking areas;
d) reduce direct visibility of car parking
areas from external viewpoints; and
e) soften views of hardstand areas.
O18 Development with the potential to No solution provided O18 – Not relevant
generate significant traffic and parking
impacts gives appropriate consideration to
transport and land use issues.
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Traffic Engineering Report – 1723 Garnet
Appendix B
Vehicle Swept Paths
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