Premilinary Traffic Management Responpse RE OPW20 0145 Noosa Business Centre 28 Eenie Creek Rd NOOSAVILLE.msg · OPW20/0145

Subject: RE: OPW20/0145 Noosa Business Centre 28 Eenie Creek Rd NOOSAVILLE
From: [email protected]
Date: 2020-11-03T03:38:31+00:00
To: Justine Elder

Hi Justine,

 

I have been through the RFI response from a traffic engineering perspective.  Some of the RFI items have been satisfactorily addressed, but others have not.  The unresolved items from a traffic perspective are outlined hereunder, using the same numbering sequence as used in the RFI.

 

 

Item 7 – Condition 17

 

Condition 17 requires private Road C to have a 12m carriageway having 1.5m on-road cycle lanes.   The normal interpretation of that is a 12m kerb to kerb road, including 1.5m cycle lanes on each side, leaving the central 9m for traffic in each direction.

 

Barlow Shelley have interpreted Condition 17 to mean 15m carriageway with 1.5m cycle lanes on each side, leaving the central 12m for traffic in each direction.  That is essentially a 4 lane undivided road, plus cycle lanes.   

 

Condition 17 also requires that the road is to be designed to cater for on-street parking to be added when future development occurs on lots 3 and 7.  This has not been demonstrated.

 

The applicant needs to either provide the 12m carriageway required in condition 17 (including 1.5m cycle lanes within that carriageway) and demonstrate how on-street parking will be delivered in the future as development occurs, or provide the ultimate road cross section now with on-street parking and on-road cycle lanes, plus allowance for through traffic.  Neither of those options have been demonstrated as being satisfactorily achieved at present.

 

 

Item 8 – Condition 24 d

 

The proposal to required pedestrians to “dog leg” across Hofmann Drive is unsatisfactory.  The path should be continuous along Hofmann Drive as required by the condition.

 

 

Item 9 - Grading of Hofmann Dr and Road B from the roundabout 

 

The Barlow Shelley letter of 16 October 2020 indicates that this item has been addressed by flattening the grades to 6% in accordance with Austroads.  This has been done for Road B, but the longitudinal section for Hofmann Drive still shows a grade of 9% down from the roundabout.  This needs to be rectified.

 

 

Item 10 – Swept paths

 

The package of information you sent did not include the swept path drawings T10-T15.  Can you please forward those to me?

 

 

Item 11 – Diameter of roundabout central islands

 

The Barlow Shelley letter of 16 October 2020 references Austroads 4B, Table 4.1 in relation to this item.  

 

Table 4.1 is for selecting the minimum radius for the central islands of single lane roundabouts.

 

The proposed roundabout dimensions are for a 12m central island radius, with a 12m circulating carriageway, thus having an outside radius of 24m.  The proposed 12m circulating carriageway is too large for a single lane roundabout, and is the carriageway width that would be provided for 2-lane roundabout.  For reference, Austroads 4B, Table 4.3 indicates that for a roundabout having an outside diameter 48m (24m radius) as proposed, the circulating carriageway width should be approximately 7m.  It is thus requested that the central island radii of the two roundabouts be enlarged as much a possible within the currently proposed roundabout footprints (as close to the 7m circulating carriageway width suggested in Austroads 4B, Table 4.3), so as to satisfactorily accommodate the design vehicle (articulated vehicle) while also constraining and deflecting paths through the roundabout as much as possible for all vehicles.  That is, the central island diameter should be enlarged as much as practical within the existing roundabout footprint.   This will firstly require demonstration of whether a 7m circulating carriageway width can accommodate the design vehicle, if not then demonstration of the minimum circulating carriageway width to accommodate that vehicle.

 

 

Item 12 – Swept paths at the eastern end of Hofmann Dr

 

I will review once the swept path drawings are received.  This will potentially when the response to Item 11 above is provided.

 

 

Item 13 – Pedestrian facility across Road C near Hofmann Dr

 

It has not been satisfactorily demonstrated that the pedestrian facility across Road C at the Hofmann Drive roundabout can’t be located at the appropriate location 6m clear of the circulating carriageway of the roundabout.  The proposed location of the facility further north-east would only be accepted if the crossing location 6m from the roundabout is unachievable.

 

 

Item 14 – Driveways

 

There are still driveways shown on the operational works plans.  Only show access driveways on plans R35-R42 for lots referenced in conditions 8 and 19a.  Remove all other driveways from those plans (even those currently shown on those plans as future driveways – those indicative positions may well change when future development applications for those lots are lodged).

 

 

Item 16 – Sight lines at the emergency access

 

The RFI question has not been answered.  The RFI request was to assess the most appropriate location for the emergency access.  Sight lines available at alternative locations have not been considered, nor have sight lines when exiting from the central median of Walter Hay Drive. It is expected that a number of location options would be assessed, with the location achieving the maximum balance of sight lines for crossing and entering the Walter Hay Drive carriageways then being adopted, provided that location also meets bushfire requirements.

 

 

Item 18 – Horizontal alignment of Hofmann Dr and Road C

 

There is no technical assessment included with the response in the Barlow Shelley letter of 16 October 2020.  At the very least minimum horizontal curve radii and reverse curve requirements from the relevant standards need to be identified, and justification then provided if those standards can’t be met.

 

It is also noted that the existing horizontal curve in Hofmann Drive at its current eastern end, from aerial photography appears to have a radius of approximately 100m.  The existing end of the constructed road appears to be at about CH200 on plan R37.  However, the proposal is to commence construction in Hofmann Drive at CH228.376, so to reconstruct the last 30m of the existing construction in Hofmann Dr.  The proposal is to reconstruct the existing R100 curve at the existing end of Hofmann Dr, with a new R50 curve between CH217 and CH192, and then an immediate reverse curve of R50 between CH192 and CH173.

 

Please see the sketch below which roughly retains the existing R100 curve at the existing end of Hofmann Dr, then a 30m straight then a R100 curve.  This would satisfy standards and achieve a much better alignment than currently proposed, with no impact on the existing Covenant J and only minor impact on the lot layout.  

 

A similar improvement to the reverse curve in Road C would also be appropriate.

 

 

 

Regards

 

Stuart Holland

Holland Traffic Consulting Pty Ltd

39 Edith Tce, Red Hill 4059

0403234315

 

From: Justine Elder <[email protected]> 
Sent: Thursday, 22 October 2020 4:16 PM
To: [email protected]
Cc: Mark Lewis <[email protected]>
Subject: OPW20/0145 Noosa Business Centre 28 Eenie Creek Rd NOOSAVILLE

 

Good afternoon Stuart,

 

Re: OPW20/0145 Noosa Business Centre 28 Eenie Creek Rd NOOSAVILLE

 

The applicant has responded to the information request and we are now in the decision period. Can you please review the information and provide comments and conditions by 9 November 2020.

 

If there is outstanding information please let Mark Lewis know asap and he will contact the applicant.

 

Click on the link to access the generated batch document.

 

https://noo.t1cloud.com/T1Default/CiAnywhere/Web/NOO/ECMCore/BulkAction/Get/2689bb1d-95f8-44e2-85e9-a578af193d4a

 

Please note, the document generation may still be in progress.

 

This link will expire on 21 November 2020, 4:14 PM.

 

 

 

 

 

Regards,

 

Justine Elder

Administration Officer 

Development Assessment

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