230 likes | 374 Views
City of Cornwall State of infrastructure october 15, 2012. Assets Managed by Infrastructure Planning Division. Transportation Network. Transportation Network, cont’d. Roads by Official Plan (OP) Class. Roads by Surface Material. Sewer Network. Water Network. Water Network, cont’d.
E N D
Transportation Network, cont’d Roads by Official Plan (OP) Class Roads by Surface Material
Water Network, cont’d Watermain Pipe Materials
Asset Value Source: Asset Management Plan Ph 2, 2006
Condition Investigation Roads • Regular road patrols by MW to address Minimum MaintStds, O Reg 239/02 • Biannual condition evaluation => assigned Pavement Condition Rating (PCR) • Development of pavement deterioration curves Bridges & Structures • Biannual structure inspection – bridges, large span culverts (>3m), retaining walls • Identification of Bridge Condition Index, deficiencies for other structures Sidewalks • Condition assessment completed in 2012 • Graded from 1 (excellent) to 5 (poor)
Condition Investigation, cont’d Sewers • Zoom camera inspect pipes at manhole junctions • CCTV inspect sewers that zoom screening identified as having structural concerns • Sewers rating based onaUK standard – Water Resources Centre (WRc) • Ratings are assigned for Structural Condition (SC) and Potential for Blockage (PB)
Condition Investigation, cont’d Watermains • Closed system, more difficult than sewers to inspect • Pressurized network, where failure can damage adjacent facilities/buildings • Stresses and metal fatigue affect failure • Service life is a typically used proxy for condition, based on statistically developed deterioration models • Analysis of low free chlorine residual testing - 0.2mg/l to 0.5 mg/l • Modelled fire flow results – 5,000 l/m fire applied on max day
Infrastructure Planning Documents • Asset Management Plan – Water, Wastewater & Transportation Networks • Phase 1 – August 2005 • Phase 2 – May 2006 • Critical Infrastructure Report – December 2006 • Interceptor & CSO Outlet Condition Investigation – November 2009 • Sewer Separation Plans • Fly Creek Area – 2002 • Brookdale and Lower Fly Creek - 2005 • Storm of Sept 30, 2010 Analysis - Ongoing
Risk A combination of the probability of asset failure and a forecast of the severity of the direct and indirect impact – consequences – of failure on the level of service to customers and the environment.
Condition Summary Roads * Source: Canadian Infrastructure Report Card, Vol 1, 2012
Condition Summary, cont’d Bridges – 2010 Structure Inspection
Condition Summary, cont’d Sidewalks
Condition Summary, cont’d Wastewater Stormwater * Source: Canadian Infrastructure Report Card, Vol 1, 2012
Condition Summary, cont’d Watermains
Average Annual Linear Infrastructure Expenditure 2008 - 2011 Source: TCA annual asset additions
What Needs to be Done? Renewal/Replacement/Repair of:
General Approach • Combined Sewer Areas: • Oldest infrastructure and where combined sewers require separation • Typically reconstruction is recommended if funds are available • Separated Sewer Areas: • These are newer areas typically meeting design standards • Rehabilitation of individual assets, shave & pave roadway
Next Steps • Identify recommended intervention to address deficiency for each identified asset. • Prepare cost estimates for recommended work. • Prioritize interventions based on risk and coordination of asset needs. • Develop budget and financing alternatives.