Traffic Impact Assessment 101-109 Parramatta Road ... · Traffic Impact Assessment 101-109...

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Traffic Impact Assessment 101-109 Parramatta Road, Homebush For: BHI Architects Pty Ltd Date: 26 th June 2017 Ref: CKC CV28FA_AZC

Transcript of Traffic Impact Assessment 101-109 Parramatta Road ... · Traffic Impact Assessment 101-109...

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Traffic Impact Assessment

101-109 Parramatta Road, Homebush

For: BHI Architects Pty Ltd

Date: 26th June 2017

Ref: CKC CV28FA_AZC

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Traffic Impact Assessment

101-109 Parramatta Road

Proposed Expansion of the Existing Motor car showroom

For: BHI Architects

Date: 26th June 2017

© Caldwell & Kent Consulting ABN: 92 614 551 218 The information contained in this document is confidential and intended solely for the use of the client for the purpose for which it has been prepared and no representation is made or is to be implied as being made to any third party. All surveys, forecasts and recommendations are made in good faith and on the basis of the information available. It is expected that the assumptions used in connection with the report will be reasonable and no representations or warranties, express or implied, will be given that these future matters will occur. Version No. Author Reviewed by: Date: 1 A.M. G.C. 26/04/17 2 A.M. Client 04/05/17 3 A.M. Client 26/06/17

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Contents Definitions ....................................................................................................................................... 4

1. Introduction ............................................................................................................................. 5

2. Site Description ........................................................................................................................ 7

3. Overview of the Existing Traffic Conditions .......................................................................... 10

3.1. Description of Road Environment ...................................................................................... 10

3.2. Public Transport ................................................................................................................. 10

3.3. Existing Traffic Generation of the Site ............................................................................... 12

4. Description of the Proposed Development ........................................................................... 13

5. Traffic Impact Assessment ..................................................................................................... 14

5.1. Trip Generation .................................................................................................................. 14

5.2. Impact Assessment ............................................................................................................ 15

6. Parking Provision ................................................................................................................... 16

6.1. Planning Requirements ...................................................................................................... 16

7. Access Arrangements ............................................................................................................ 17

7.1. Car Parking Arrangement ................................................................................................... 17

7.2. Driveway Arrangement ...................................................................................................... 17

7.3. Sight Distance ..................................................................................................................... 18

7.4. Driveway Location .............................................................................................................. 18

7.5. Servicing ............................................................................................................................. 18

8. Conclusions and Recommendations ..................................................................................... 20

9. Attachments .......................................................................................................................... 20

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Definitions

DA: Development Application

GFA: Gross Floor Area

Proposal: Construction of a New Motor Car Showroom

RMS: Roads and Maritime Services

DCP: Strathfield Development Control Plan – 2005

AS2890.1: Australian Standard for Off-Street Parking Facilities AS2890.1-2004

AS2890.6: Australian Standard for Parking Facilities Part 6: Off-Street Parking for People with Disabilities

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1. Introduction

Caldwell & Kent Consulting (CKC) have been engaged by BHI Architect to assist with the Development Application process for the construction of a new car showroom, located at 101-109 Parramatta Road Homebush, which is part of the Strathfield Council LGA.

The proposal involves the demolition of the existing motor showroom and the construction of a two storey car showroom – plus an additional level of basement parking (i.e. a total of three levels). As part of the proposal a total of 36 car spaces will be spread across two levels (i.e. outdoor car park and ground level) accessible via driveways located along the Powell Street frontage.

Figure 1-Site Location (Source Google Maps)

The purpose of this report is to present the traffic and parking assessment associated with the proposal, and to determine the implications of the projected change in traffic and parking activity on the surrounding road network.

The report is structured as follows:

Section 2: Site Description

Section 3: Overview of Existing Traffic Conditions

The Site

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Section 4: Description of the Proposed Development

Section 5: Traffic Impact Assessment

Section 6: Parking Provision

Section 7: Access Arrangements

Section 8: Conclusions and Recommendations

Section 9: Attachments

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2. Site Description

The site is located at 101-109 Parramatta Road, Homebush and is irregular in shape. The subject site is part of the Strathfield Council LGA and is zoned  as  “B4- Mixed use”.

The site occupies Lot 200 of DP1117827and accommodates an area of 4,692sqm. The site is located within a mixed use area and is bordered by Powell Street to the North, Retail use to East, Parramatta Road to the South and Underwood road to the West. All vehicular to the site is available via the driveways located on Parramatta Road and Powell Street frontages.

Figure 2-The Site (Source Google Earth)

The site currently operates as a motor car showroom and is used as a secondary facility by Sutton Motors (Holden Shown Room) located directly opposite the site (i.e. on the southern side of Parramatta Road).

A site visit was undertaken on 24th April 2017 to observe the operation of the existing road network and the site photographs are presented below.

SUTTON MOTORS HOLDEN SHOWROOM

THE SITE

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Figure 3-Site Photo looking at the Site from Powell Street

Figure 4-Site Photo looking at the Existing Driveway located on Powell Street

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Figure 5-Site Photo along site frontage located on Parramatta Road looking to the East

The following map shows the hierarchy of the surrounding road network as classified by Road and Maritime Services (RMS), formerly known as Road and Traffic Authority (RTA).

Figure 6-Surrounding Road Network (Source RMS Website)

The Site

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3. Overview of the Existing Traffic Conditions

3.1. Description of Road Environment Parramatta Road is classified as a State Road and follows an East-West alignment. It operates as a major route connecting western suburbs with Sydney CBD. Within the suburb of Homebush, the carriageway of Parramatta Road is divided and comprises of two traffic lanes in each direction with provision of auxiliary turning lanes. It has a posted speed limit of 60kph with no on-street parking permitted. A paved footpath is available on both sides of the carriageway.

Underwood Road is classified as a Regional Road and follows a North-South alignment. It connects Australia Avenue (at the northern end) with Parramatta Road. Typically, the carriageway is undivided and comprises one traffic lane in each direction with unrestricted on-street parking permitted. It has a posted speed limit of 50kph. The intersection of Underwood Road with Parramatta Road operates as a signalised intersection with provision of pedestrian crossing on all approaches.

Powell Street is classified as a Local Road and follows an East- West alignment. It connects Park Road with Parramatta Road. The carriageway is undivided and comprises of one traffic lane in each direction with on-street parking permitted. It has a posted speed limit is 50kph. The intersection of Powell Street with Underwood Road operates as a priority controlled intersection with vehicles travelling along Underwood Road having priority over the vehicles on Powell Street.

M4 motorway operates as a major motorway connecting western suburbs with Sydney CBD. It follows an East-West alignment and comprises of three traffic lanes in each direction.

3.2. Public Transport The site is serviced by both train and buses. The nearest station located within the vicinity of the site is Homebush Station, which is situated approximately 400 metres south-east of the site. Homebush Train Station   is   serviced   by   the   “T1  Western Line”&   “T2 Inner  West&   South   Line”. These services operate between Emu Plains to Sydney CBD. During the morning peak period (08:00-09:00am), this service operates with a frequency of five inbound (to Sydney CBD) services and five outbound services (to Western Suburbs).

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Figure 7- Train Service Map (Source NSW Transport Info Website)

Bus services within vicinity of the subject site are operated by Sydney Buses. Route No 525 is a regular bus services operates from Monday to Saturday between Parramatta and Burwood via Sydney Olympic Park. These services operate from 6:00am to 10:00pm, with a total of six services during commuter peak period. Bus services can be accessed via the bus stop located on Parramatta Road, approximately 200 metres east of the subject site.

Route 526 is a regular bus service operates from Monday to Saturday between Burwood and Rhodes Shopping Centre. These services operate from 6:00am to 10:00pm, with a total of six services during commuter peak period. Bus services can be accessed via the bus stop located on Parramatta Road, approximately 200 metres east of the subject site.

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Figure 8- Route Map –Bus Routes 525 & 526 (Source NSW Transport Info Website)

3.3. Existing Traffic Generation of the Site The subject site is located within a mixed use area and is occupied by a motor car showroom. The existing traffic activity associated with the site was determined with reference to the RMS Guide to Traffic Generating Development (The Guide). In relation to the existing use, The Guide recommends the following trip generation rates:

Evening peak hour vehicle trips = 0.7 per 100m2 site area

Application of the above to the existing site occupying an area of approximately 4,692sqm would result in 32.82 (say 33) vehicle trips per hour during evening peak period.

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4. Description of the Proposed Development

The proposal involves the demolition of the existing motor showroom and the construction of a two storey car showroom – plus an additional level of basement parking (i.e. a total of three levels). The proposed showroom will be spread across two levels comprising the following uses:

Basement Level –storage for Vehicles; Outdoor Car Park – Customer parking accessible via the existing driveway located on Powell

Street frontage; Ground Level – Car Display Area (both external and internal) and customer care centre(i.e. office

use)and Customer Parking; and First Level – Plant room, storage, Amenities including storage area, Office and Staff Lunch Room

As part of the proposal, an on-site parking provision of 36 car space will be provided which will be spread across ground level and outdoor car park. Vehicular access to the outdoor parking area will be provided via the existing driveway on the Powell Street frontage (located on the northeastern corner of the site) whereas, the ground level car park will be accessible via a new combined entry/exit driveway located on the Powell Street frontage (i.e. along northern side of the site).

Architectural plans associated with the proposal have been prepared by BHI Architects, and the plans indicating the car park are presented as Attachment A.

Operation of the Proposed Showroom

As part of the operation of the proposed showroom, the customers on arrival to the site will be requested to drop off their car at the designated valet parking spaces located on ground floor near the reception area. From this point the staff of the showroom will drive the car to the customer parking bays located on ground and outdoor parking - thus restricting customer access to the ground level only.

Furthermore, as part of the proposal an overhead easement is provided within the ground floor car parking area. If any maintenance work is required for this overhead easement - in such instances we understand that the customer access to the ground floor car park will be restricted to the designated valet parking area. From there the on-site valet staff, will park the customer vehicles in the basement level of the proposed car park.

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5. Traffic Impact Assessment

5.1. Trip Generation The  traffic  activity  associated  with  the  proposal  has  been  calculated  with  reference  to  the  ‘RMS  Guide  to  

Traffic Generation Developments’ (The Guide). The proposal involves the construction of a motor showroom. In relation to the motor showroom, The Guide indicates that it experiences peak traffic activity during the evening period and recommends the following trip generation rate:

Table 1- Recommended Traffic Generation Rates for a Motor showroom including service centre (Source RMS Guide to Traffic Generation-2002)

Application of the above traffic generation rates to the proposed showroom accommodating a site area of 4,692sqm; results in the evening peak period trip generation of 32.8 (say 33) vehicle trips per hour.

Furthermore, the proposed motor showroom will include office areas of approximately 533sqm in total - located on both ground level and first level. The proposed office areas located on the ground level and first level will be exclusively used by the sales staff.

Typically, the traffic generation activity of the Motor Showroom includes the traffic activity associated with the staff. In this regard, the traffic activity of the proposed office use is included within the traffic generation of a motor showroom.

In this regard, the proposal has a potential to generate the 33 vehicle trip per hour during evening peak period.

Use Evening Peak (veh trip/hr)

Motor Showroom 0.7 per 100sqm site area

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5.2. Impact Assessment The projected traffic activity associated with the proposal indicates the site is likely to generate a peak hour traffic of 33 vehicle trips – indicating a vehicle trip every 2 minutes or so

Furthermore, the development is proposed on a site that is currently occupied by a motor showroom which already is generating traffic. The Standard engineering practice is to deduct the existing traffic activity from the projected traffic generation activity. If we adopt this procedure the proposal is likely to result in similar traffic activity as the existing. Therefore we anticipate no increase in traffic activity associated with the proposal.

In conclusion, the proposal is likely to generate a maximum of 33 vehicle trips an hour which is identical to the existing traffic activity of the site. Thus, the proposal is highly unlikely to have any detrimental impact on the operation of the surrounding road network.

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6. Parking Provision

6.1. Planning Requirements The subject site is part of the Strathfield Council and Part 2 of the Strathfield Development Control Plan 2005 (DCP) specifies the on-site parking requirements for various uses. Section 3.4.3 of the Part 2 of the DCP includes the following parking rates for motor showroom.

1.5 spaces per 200sqm of site area

The DCP further recommends that the dimension of the on-site parking spaces should be provided in accordance with AS2890.1. This is detailed in Section 7 of the report.

The proposed motor show will occupy an area of 4,692sqm and application of the above parking provision rates results in a requirement of 35.19(say 36) car spaces. The proposal involves an on-site parking provision of 36 cars spaces spread across ground and outdoor car park and is summarised in the table below - thus complying  with  the  Council’s  requirements. Table 2- Proposed Parking Provision

In this regard, the proposed on-site parking provision of 36 car spaces is highly unlikely to have any negative impact on the on-street parking supply and is considered suitable to service the proposed development.

Location No. of Car Spaces

Ground floor level 22 car spaces (including 2 disabled spaces) Outdoor car park 14 car spaces

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7. Access Arrangements

7.1. Car Parking Arrangement

The proposed car parking arrangement has been assessed according to the requirements listed in AS2890.1 (2004). Table 1.1 of AS2890.1 provides a classification of the off-street parking facilities based on various land uses, which is essential in determining the associated parking space dimensions.

As discussed earlier, a review of the operation of the proposed motor showroom indicates that the customer parking a total of 36 car spaces will be provided across ground and outdoor car park. Therefore, these spaces have been assessed against the   ‘Type 2’ user class with 90 degree parking spaces (which is associated with Medium term Parking). In relation to the Type 2 user class, Figure 2.2 of the AS2890.1 specifies the following parking dimensions:

Space width – 2.5 metres Space length – 5.4 metres Aisle width – 5.8 metres

The space dimensions of the proposed car spaces were measured as a minimum of 2.5 metres wide and 5.4 metres long, with an associated aisle width exceeding 5.8 metres, thereby meeting the minimum requirements stipulated by AS2890.1.

In this regard, the proposed car parking arrangement has been designed in accordance with the Australian Standard.

7.2. Driveway Arrangement As part of the proposal, the existing driveway located on Powell Street frontage will be retained which will service the outdoor parking area accommodating a total of 19 car spaces. Given this driveway currently services the existing car park which accommodates more than 19 car spaces – thus, this driveway is considered suitable to service the proposed outdoor car park.

Furthermore, the proposal involves introducing a combined entry/exit driveway on Powell Street to service the proposed ground level car park of the Motor Showroom. Table 3.1 & Table 3.2 of AS2890.1 specifies the width of the access driveway, which is directly proportional to the on-site parking provision and also the type of frontage road.

Taking into account the proposed driveways are located on Powell Street, which is classified as a Local Road, and the car park has a capacity of 22 parking spaces, Table 3.1 classifies the proposed driveway as ‘Category 1’. Table 3.2 therefore recommends if the driveways are combined than the driveway should be 3.0-5.5m wide. The width of the proposed driveway is in excess of 6.0 metres and is therefore considered compliant with the Standard.

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Additionally, in order to access the driveway configuration we have undertaken Swept Path Analysis utilising the AutoTrack simulation software. The Swept Path Analysis was undertaken utilising the recommended vehicle type and is presented as Attachment B.

7.3. Sight Distance

Section 3.2 of AS2890.1 specifies the recommended sight distance associated with the driveway. The sight distance requirement is prescribed in accordance with the posted speed limit along the frontage road. The proposed development will be accessible via the driveway located on Powell Street frontage.

Section 3.2 of the Standard specifies a desirable visibility distance of 69 metres, and a minimum distance of 35 metres for streets having a posted speed limit of 50kph. The proposed driveway is located on a straight section of Powell Street where unobstructed visibility is available. In this regard, the driveway arrangement is considered safe and appropriate to service the proposed development.

7.4. Driveway Location

Figure 3.1 of the Standard shown below, specifies the prohibited location for introduction of a Category 1 driveway.

Figure 9- Prohibited Locations of Access Driveway (Source AS2890.1-2004)

A review of the proposed driveway indicates the driveway is located well outside the prohibition zone and therefore, the proposal is considered compliant with the Standard.

7.5. Servicing

The review of the operational procedure of the proposed showroom indicates that in addition to the passenger cars the proposed development is likely to require vehicular access for the following uses:

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Refuse Collection; and Car deliveries.

Refuse Collection

Based on the information provided to CKC we understand the refuse collection will be undertaken by a private contractor who will utilise a refuse collection vehicle with following dimensions:

Truck Length – 10 metres; Overall Width – 2.48 metres; Turning Radius – 10.5 metres (Kerb to Kerb); and Overall Height – 3.4 metres.

As part of the proposal the refuse collection bins are located on Ground level and therefore, the refuse collection vehicle will require access to this level only. In order to access the suitability of the proposed driveway configuration and ground level to service the proposed refuse collection vehicle we have undertaken Swept Path Analysis utilising the AutoTrack simulation software. The Swept Path Analysis was undertaken utilising the recommended vehicle type and is presented as Attachment B.

In order to ensure a refuse collection vehicle can enter and exit the site in forward direction the following are required:

Refuse truck needs to undertake a three point maneuver to access the proposed bin collection area;

On exit the truck is required to undertake a two point maneuvers; Both on Entry and Exit the truck requires access to the area where three customer car spaces

(located on approach to the ramp) are proposed. We understand that the refuse collection will be undertaken during the afterhours and therefore, these customer car spaces are highly likely to be vacant and available for use by a refuse collection truck.

Vehicle Deliveries

We have been advised by the Client that the cars will be delivered to the Holden Showroom (also owned by Sutton Motors) located directly opposite to the site on southern side of Parramatta Road and from there the cars will be driven to the site.

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8. Conclusions and Recommendations

The provision of 36 car parking spaces for the proposed development is considered sufficient to handle the project parking demand;

Based on the information provided, the proposal does not generate any increase in safety risk to pedestrians or drivers as a result of the access and parking configuration;

The proposed development will not negatively impact current traffic conditions including local intersection capacity; and

An assessment of the car park layout, including the parking spaces and associated aisle width, indicate the car park layout is compliant with the relevant applicable Standards (AS2890.1).

9. Attachments

Architectural Plan indicating Access and Car Park Arrangement

Turning Path Assessments:

Swept Path Assessment of the Proposed Refuse Collection vehicle accessing the Site

Swept Path Assessment of B85th vehicle type accessing the proposed on-site car spaces

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20.00 %

10.00 %

10.00 %

20.00 %

20.00 %

10.00 %

10.00 %

964.23 m2

396.83 m

8.25 %

15.38 %

8.25 %

1011 23456789

F. H

. R.

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FL.+7,850

+5,445

R 4,000

R 2,900

R 3,230

R 3,000

R 3,000R 3,000

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3A.3101

Proposed Sub-station

Impact bollorarefer to eng's details

Exiting removal concrete panelto be remained

above storm-water channel.( shown as hatched)

Service Reception

Service Reception

UP

12345678

9

101112131415161718

26

x 18

1 =

4,70

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Plasterboard stud partition wall

Install fire shutterwith wall wetting sprinkler system.

refer to BCA report.

Install fire shutterwith wall wetting sprinkler system.

refer to BCA report.

Fire separation wallrefer to BCA report

SubstationStairs Stairs

RAMP DOWN

TO BASEMENT RAMP UP

TO FIRST FLOOR

Foot

pathGROUND FLOOR

CAR PARKING

Egress Stairs

Footpath

Hospitality bar

Lift

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Stairs

Egress

CUSTOMER LOUNGE

CUSTOMER LOUNGE

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Egress

Ser

vice

RAMP UP

TO GROUND FLOOR

DRAWING TITLE- REFUSE VEHICLE (10.0M LONG) ENTERING THE SITE PROJECT NO - CKC SM01

DRAWING NO - CKC SMV01

NOTES -

SCALE - NTS

DATE - 26/06/2017CLIENT- BHI ARCHITECTS

PROJECT ADDRESS - 101-109 PARRAMATTA ROAD, HOMEBUSH

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20.00 %

10.00 %

10.00 %

20.00 %

20.00 %

10.00 %

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964.23 m2

8.25 %

15.38 %

8.25 %

10

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Exiting removal concrete panelto be remained

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Ser

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DRAWING TITLE- REFUSE VEHICLE (10.0M LONG) EXITING THE SITE PROJECT NO - CKC SM01

DRAWING NO - CKC SMV02

NOTES -

SCALE - NTS

DATE - 26/06/2017CLIENT- BHI ARCHITECTS

PROJECT ADDRESS - 101-109 PARRAMATTA ROAD, HOMEBUSH