SUSTAINABLE INFRASTRUCTURE

December 2008

Sustainable Infrastructure…

“Sustainability of Infrastructure is about correct design (including cost recovery &

affordability) and maintenance over the life of the infrastructure”

Consideration Given To:RoadsSewage Network and TreatmentWater Purification and NetworkStorm WaterElectrical Reticulation

Roads…

Road design is based on geometrical and pavement designGeometrical design is set for the lifetime of the roadPavement design incorporates certain maintenance actions along the life of the road structureFor pavement design roads are divided into four categories:

Category (A)- Road Class 1,2 – Freeway & Major ArterialCategory (B)- Road Class 3,4 – Minor arterials and collectorsCategory (C)- Road Calls 5(a), 5(b) – Residential access collectors and car parksCategory (D) – Road Class 5(b), 5(f)- Local access roads, loops, cul-de-sac etc

Roads…

Category A Maintenance:Lower capital cost with structural design for 20 years

Resurfacing at 12 years

Structural rehabilitation at 20 years

Resurfacing at 26 years

Higher capital cost with structural design for 30 years

Resurfacing at 8, 16, 23 years

Roads…

Category B Maintenance:Structural design for 20 years

Resurfacing at 12 yearsStructural rehabilitation at 20 yearsResurfacing at 26 years

Category C MaintenanceStructural design for 20 years

Resurfacing with overlay 10 years and patch repair as and when required

Category DResurface and patch repair 12 years

Sewage Network and Treatment

Sewage TreatmentDesign is based on per capita usageDesign should be modularDesign treatment works for regular maintenance of plant without have to shut plant downMaintenance schedules should be documented (e.g. daily maintenance, monthly, annual etc)Maintenance staff should be well trainedFull compliment of maintenance staff required (electrical, fitters, welders, foreman etc)Fully stocked maintenance store required

Sewage Network and Treatment

Sewage NetworkDesign is based on per capita usage

Network should be designed for ease of access

Maintenance schedules should be documented (e.g. daily maintenance, monthly, annual etc)

Maintenance staff should be well trained

Full compliment of maintenance staff required (electrical, fitters, welders, foreman etc)

Fully stocked maintenance store required

Water Reticulation and Purification

ReticulationWater a scarce commodityNeed for meters to measure consumption and leakageWater reticulation is pressurizedMaintenance of network to minimize leaks,Maintenance of pressure valves etcMaintenance schedules should be documented (e.g. daily maintenance, monthly, annual etc)Maintenance staff should be well trainedFull compliment of maintenance staff required (electrical, fitters, welders, foreman etc)Fully stocked maintenance store required

Water Reticulation and Purification

PurificationPurification plants designed per capita demand

Maintenance schedules should be documented (e.g. daily maintenance, monthly, annual etc)

Maintenance staff should be well trained

Full compliment of maintenance staff required (electrical, fitters, welders, foreman etc)

Fully stocked maintenance store required

Storm Water Drainage

Design influenced by catchment factors, slope runoff surface, predicted storm size and frequencyMaintenance often over looked however schedules should be documented (e.g. daily maintenance, monthly, annual etc)Maintenance staff should be well trainedFull compliment of maintenance staff required (electrical, fitters, welders, foreman etc)

Electrical Reticulation

Maintenance schedules should be documented (e.g. daily maintenance, monthly, annual etc)Replacement of cables, transformers and switchgear required and frequency needs to be determinedMaintenance staff should be well trainedFull compliment of maintenance staff required (electrical, fitters, welders, foreman etc)

Maintenance Planning

All services require maintenance plans that detail:

Item to be maintained

Frequency of maintenance

Shut down/isolation procedures

Stock required in stores

Communication with stakeholders

Staff compliment and plant required

Authorization sequence

Cost of maintenance program for each item

Maintenance Planning Required for New Infrastructure

Investment

Rail

Fre

ight

Serv

ices

Energ

y

Pro

duction

National R

oads

Com

mute

r R

ail

Serv

ices

Airport

s

2010 W

orld C

up

Sta

dia

Tra

nsport

Support

ing

Infr

astr

uctu

re

Oth

er

Tota

l

%

%

Infrastructure Spend 2006-2010: R 420 billion

Maintenance Planning Required for New Infrastructure Investment Including Peter

Mokaba Stadium