bloubos services report g3... · the “sir lowry’s pass f3” overhead feeder runs parallel to...

Newport Properties

Electrical Engineering Services Report for the proposed “Bloubos” mixed use Development on Remainder Portion 43 of the “Farm Gustrouw Number 918”, Somerset West, Cape Town

P14796

20 March 2018

Q:\P14796 (Bloubos Road Development)\A\Ehv\03_Project Management Plan Design\G_Document Management ‐ Reports\Services Report\Bloubos Services Report.docx

Electrical Engineering Services Report for the proposed “Bloubos” mixed use development on the Remainder Portion 43 of the “Farm Gustrouw Number 918”, Somerset West, Cape Town CONTENTS

Chapter Description Page

Revision Status 2

Distribution List 2

Appendices 2

1 Introduction 3

2 Development Proposal 3

3 Electrical Infrastructure Design Parameters 3

4 Electricity Supply Authority 3

5 Existing Electricity Supply Capacity 4

5.1 Existing Capacity 4

5.2 Proposed Supply 4

6 Existing Electrical Services and Servitudes 4

6.1 Introduction 4

6.2 Eskom 132 kV Servitude 4

6.3 Eskom 66 kV Services 4

6.4 Eskom 11 kV Services 5

6.5 City of Cape Town Electrical Services 7

7 Conclusion 7

Document Control and Disclaimer 14


Revision Status

Rev No. Issue Date Revision Description Prepared

By Reviewed

By Approved By

0 20/03/2018 Original M Batt S Harcus A van der Walt

Distribution List

Copies to:

Copy No. Name Company Email

Copy 1 of 2 Mr Geoff Chait Newport Properties [email protected]

Copy 2 of 2 Mr Gary Stevens Multi Quantity Surveyors [email protected]

Appendices

Appendix A: Locality Plan ........................................................................................................................ 8

Appendix B: Development Proposal ........................................................................................................ 9

Appendix C: Eskom Capacity Letter ....................................................................................................... 10

Appendix D: Wayleave Agreement ....................................................................................................... 11

Appendix E: Existing Eskom Services ..................................................................................................... 12

Appendix F: City of Cape Town Electrical Services ................................................................................ 13


1 Introduction

GIBB (Pty) Ltd was requested by Newport Properties to compile an Electrical Engineering Services Report for the proposed “Bloubos” mixed use development in Somerset West, Cape Town.

This report describes the proposal for Electrical Engineering Services to supply the

development and also addresses the availability of electrical capacity on the existing Eskom

electrical network.

2 Development Proposal

The site is located on Remainder Portion 43 of the Farm Gustrouw Number 918, situated in the City of Cape Town, as shown on the locality plan attached hereto as Appendix A. The site is situated to the south of National Road N2 at the “Shell” Service Station at Firlands. The mixed use development proposal comprises the establishment of 1 000 sectional title units and 1 800 m2 of retail space as shown on the development proposal plan attached hereto as Appendix B. The sectional title units will consist of a number of residential “clusters” at varying densities of between 68 and 120 units per hectare. A single retail site is proposed which is located adjacent the existing service station site.

3 Electrical Infrastructure Design Parameters

Energy efficient measures will be applied to reduce the ADMD of the sectional title units which will include the installation of LED lighting and other measures to be finalised during the design stage of the development. Taking the above energy efficient measures into consideration the notified maximum demand (maximum load) of the development is estimated as follows:

Description Quantity Estimated after diversity maximum demand (ADMD)

Estimated demand

Retail 1 800 m2 85 VA/m2 153 kVA

Sectional Title 1 000 units 3 kVA/unit 3 000 kVA

General Services Provision

1 100 kVA 100 kVA

Diversity Factor 0.8

Estimated Demand 2 600 kVA

The electricity distribution systems will be designed for the anticipated maximum load to avoid the need for future upgrading of the electricity distribution systems.

4 Electricity Supply Authority

The area of the proposed development falls within Eskom’s area of supply.


5 Existing Electricity Supply Capacity

5.1 Existing Capacity

It is envisaged that the proposed development will be supplied from Eskom’s “Sir Lowry’s

Pass” Substation.

Eskom has confirmed that Sir Lowry’s Pass Substation has sufficient capacity to supply the full

load of the development (refer to the attached Eskom confirmation of capacity letter

attached hereto as Appendix C).

5.2 Proposed Supply

Sir Lowry’s Pass Substation is situated some 800 m south east of the development. A new

11 kV supply will be established from the substation to the development. The final cable

routing will be negotiated with Eskom. We have proposed to make use of the existing

servitude area, but this is yet to be formally accepted by Eskom.

6 Existing Electrical Services and Servitudes

6.1 Introduction

Appendix E shows the extent of the existing Eskom services affected by the proposed development. These services are summarised as follows: 1. Gala/Lourensrivier 132 kV O/H line

2. Sir Lowry’s Pass/Waterkloof 66 kV O/H line (decommissioned)

3. Sir Lowry’s Pass/Revan 1 11 kV UG feeder

4. Sir Lowry’s Pass F3 11 kV O/H feeder

5. Sir Lowry’s Pass F2 11 kV O/H feeder

6.2 Eskom 132 kV Servitude

The Gala/Lourensrivier 132 kV overhead line is currently installed within a 39,938 m wide power transmission and telecommunication servitude across the property. No permanent structures are allowed within the servitude area.

6.3 Eskom 66 kV Services

The Sir Lowry’s Pass/Waterkloof 66 kV overhead line has been decommissioned and removed. A number of abandoned support structures have remained and will have to be removed prior to commencement of the civil works. These structures and associated suspension parts will have to be disposed of in accordance with the Eskom Guidelines for the disposal of such equipment. See Figure 6.1 below.


Figure 6.1: 66 kV Structures

6.4 Eskom 11 kV Services

The “Sir Lowry’s Pass/Revan 1” 11 kV underground cable, that follows the route of the decommissioned overhead infrastructure was identified by Eskom’s Western Cape office. According to their records, this cable is subject to a “wayleave agreement” in favour of Eskom. This information is yet to be verified by Eskom’s National office. Should the agreement still be valid, it notes that the wayleave agreement will be cancelled upon the successful relocation of the underground cable. Refer Clause 5 of the wayleave agreement as attached to Appendix D. The costs for this relocation will be for the developments account. “Sir Lowry’s Pass F2” overhead feeder cuts across the south western property boundary. This portion of line will have to be decommissioned or rerouted by Eskom, depending on the current users connected to it. Refer to Figure 6.2 below.


Figure 6.2: F2 ‐ 11 kV Line

The “Sir Lowry’s Pass F3” overhead feeder runs parallel to the northern properties boundary. A photo of this line is included below.

Figure 6.3: F3 ‐ 11 kV Line

The exact position of this line will have to be determined by a site survey. The survey will confirm whether this line is currently within the road reserve or within the property boundary. Further negotiations with Eskom may be required regarding the relocation of this line should it be repaired. The existing service station is currently supplied from this overhead line. Figure 6.4 below shows the position of the existing minisub.

Figure 6.4: Existing Minisub


6.5 City of Cape Town Electrical Services

The electrical services maintained by the City of Cape Town are limited to the existing streetlighting along the N2. The lighting extends to the East and the West of the development, to well beyond the property boundary. Any alterations to the existing configuration may require a re‐design of the affected portion. The extent of the services are included in Appendix F of this report.

7 Conclusion

GIBB has investigated the proposed development layout and engineering constraints of the

proposed development and is satisfied that the site is suitable for the intended development

from an electrical engineering point of view.


Appendix A: Locality Plan


Appendix B: Development Proposal

Gate

House 2A

in

out

1800m² Retail Component

Community

Centre

Gate

House 2B

Gate

House 1A

Mixed Use/

Education Facility

Gate

House 1B

Recreational

Facilities

Gate

House 1C

Visitor/ Public Parking

Visitor Parking

SLEAD BUILD DESIGNVA

Rev : 7

Spatial Development Framework - Phase 1 & 2

UD.2002

Bloubos Residential Precinct:

N

010 20 5010 100

70% 2 bed units30% 1 bed units

100 yr Flood Line

Servitude

Power line

Building Setback

Pocket Boundary

530 Units in Phase 2

1000 : Total Units [Phase 1 & 2 ]

[2 bays/ unit]

[1,25 bays/ unit] } 1,775 bays/unit

Phase 2 - Parking Schedule

Bay Allocation Count Parking Ratio Maximum Units

Phase 1Community 78 168Phase 1A 96 @1.775 bays/unit 55Phase 1B 437 @1.775 bays/unit 247Phase 1C 306 @1.775 bays/unit 168

917

Phase 2Phase 2A 375 @1.775 bays/unit 212Phase 2B 560 @1.775 bays/unit 318

935Grand total: 1852 1852

470 : Units [Phase 1] }

}

Area Schedule (Property Division - Phase 1 & 2)

Number Name Area Unit Count Density/ Ha

Phase 11 Parcel 1- GB1 0.8 hectare N/A N/A2 Parcel 2- C01 0.2 hectare N/A N/A3 Parcel 3 - GR2 0.8 hectare 55 68 du/Ha4 Parcel 4 - GR2 2.6 hectare 247 95 du/Ha5 Parcel 5 - GR2 1.4 hectare 168 120 du/HaPhase 26 Parcel 6 - LB1 0.8 hectare N/A N/A7 Parcel 7 - GR2 2.4 hectare 212 88 du/Ha8 Parcel 8 - GR2 3.3 hectare 318 93 du/Ha


Appendix C: Eskom Capacity Letter

Eskom Holdings SOC Limited Reg No 2002/015527/30

Dear Mr. Batt,

SERVICE CERTIFICATE: FIRLANDS MIXED-USE DEVELOPMENT

With reference to your enquiry at Eskom, I advise that Eskom is the licensed Distributor to the

abovementioned development.

The network feeder is Sir Lowrys Pass S/S.

The method of supplying the electricity will be determined once details are made available. The

formal quotation process will confirm spare capacity available and a proposal to supply such

property. Execution of making supply available will only be initiated on acceptance of a formal

budget quote.

The date to make a point of supply available will be confirmed during this process.

Please direct a formal application to our Group Customer Services for a quote at:

Group Customer Services

Eskom

Po Box 2100

Bellville

7535

Should you require any further information please contact Pieter Du Preez on the numbers

mentioned above, and be assured of Eskom’s best service at all times.

Yours faithfully

________________________________

JP Du Preez

Key Customer Relations Officer

Group Customer Service 60 Voortrekker Road, Bellville, 7530 P.O. Box 2100, Bellville, 7535 SA Tel +27 86 003 7566 www.eskom.co.za

Mr. Mario Batt Date: The Developer 08 February 2018 Gibb Engineering & Architecture PO Box 3965

Enquiries: JP Du Preez

CAPE TOWN

Tel +27 21 915 2076 8000


Appendix D: Wayleave Agreement


Appendix E: Existing Eskom Services


Appendix F: City of Cape Town Electrical Services

N2

ESKOM

ST918-183ST918-185

ST959-198

ST959-RE

ST918-43-RE

ST959-282

ST959-9ST959-8

ST959-6-RE

ST959-5-RE

ST959-285

ST959-7-RE

ST959-296

ST959-10-RE

ST959-281

ST959-279

ST918-146

ST918-24-RE

ST959-97

ST1154-4

ST959-146

ST959-96

ST959-280

ST959-297

ST1154-RE

ST918-60-RE

ST959-273-RE

32001

ST1154-27

ST959-287

ST959-274

ST959-144

ST959-298

ST959-176

ST959-307

ST959-309

ST1154-26

ST959-316

ST959-300

ST959-299

ST959-308

ST959-306

ST959-305

ST959-310

ST959-311

ST918-149

ST959-304

ST959-272

ST959-284

ST959-140

ST959-RE

32002

ST959-317

ST959-12

ST959-117-REST959-315

ST959-312

ST959-177-RE

ST959-314

ST959-319

ST959-173

ST1154-28

ST918-184

ST959-174

ST959-318

ST959-286ST959-95

32003

ST959-301

ST1154-5

ST959-313

ST959-270 ST959-271

Firlands

NOTES OUR REFERENCE: YOUR REFERENCEFirlands Mixed-Use developmentWayleave for Planning Purposes

E.CAPES

A van Zyl 16/3/3/1ELECTRICITY GENERATION & DISTRIBUTION

CITY OF CAPE TOWNCHECKED:

SCALEDATEENGINEER:

PROCESSED:

2017/05/04

MC Louw

1:2,500·

LegendStreetlight

Pole

EXTENT OF PROPOSED PLANNING

CITY OF CAPE TOWNELE C TR ICITY G E NE RAT IO N

& D IS TR IBU TION

DR AW IN G & RE CO RD C EN TR EEA ST

4 MAY 2017


Document Control and Disclaimer

FORM IP180_B

CLIENT : Newport Properties

PROJECT NAME : Bloubos PROJECT No.: P14796

TITLE OF DOCUMENT : Electrical Engineering Services Report for the proposed Bloubos mixed use development, Somerset West, Cape Town

ELECTRONIC LOCATION : Q:\P14796 (Bloubos Road Development)\A\Ehv\03_Project Management Plan Design\G_Document Management ‐ Reports\Services Report\Bloubos Services Report.docx

Approved By Reviewed By Prepared By

ORIGINAL NAME Andre van der Walt

NAME Sinclair Harcus

NAME Mario Batt

DATE 20 March 2018

SIGNATURE

SIGNATURE SIGNATURE

Approved By Reviewed By Prepared By

REVISION NAME

NAME

NAME

DATE

SIGNATURE

SIGNATURE

SIGNATURE

This report, and information or advice, which it contains, is provided by GIBB (or any of its related entities) solely for internal use and reliance by its Client in performance of GIBB’s duties and liabilities under its contract with the Client. Any advice, opinions, or recommendations within this report should be read and relied upon only in the context of the report as a whole. The advice and opinions in this report are based upon the information made available to GIBB at the date of this report and on current South African standards, codes, technology and construction practices as at the date of this report. Following final delivery of this report to the Client, GIBB will have no further obligations or duty to advise the Client on any matters, including development affecting the information or advice provided in this report. This report has been prepared by GIBB in their professional capacity as Consulting Engineers. The contents of the report do not, in any way, purport to include any manner of legal advice or opinion. This report is prepared in accordance with the terms and conditions of the GIBB contract with the Client. Regard should be had to those terms and conditions when considering and/or placing any reliance on this report. Should the Client wish to release this report to a Third Party for that party's reliance, GIBB may, at its discretion, agree to such release provided that: (a) GIBB’s written agreement is obtained prior to such release, and (b) By release of the report to the Third Party, that Third Party does not acquire any rights, contractual or otherwise, whatsoever against

GIBB and GIBB, accordingly, assume no duties, liabilities or obligations to that Third Party, and (c) GIBB accepts no responsibility for any loss or damage incurred by the Client or for any conflict of GIBB interests arising out of the Client's

release of this report to the Third Party.

GIBB (Pty) Ltd Website : www.gibb.co.za

Postal Address : PO Box 3965, Cape Town Physical Address : 14 Kloof Street, Cape Town

Contact Person : Mario Batt Email Address : [email protected]

Telephone No. : 021 469 9100 Fax No. : 021 424 5571

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