LSC Bridge Rehabilitation Project Presented by: Arvind Singh – Project Engineer Livingstone Shire Council Mark de Hayr – Director FORCECOR IPWEAQ CQ Branch Conference - Biloela 2015
LSC Bridge Rehabilitation Project Contents: • Outline of the Problem • Details of the Goals • Analysis of the Causes • Recommended Actions IPWEAQ CQ Branch Conference - Biloela 2015
The Problem 2014 Level 2 Inspection Program Identified three structures in salt environments that were deficient and compromising the required Service Levels – Shoal Creek Bridge (ID 638289) – Fig Tree Creek Bridge (ID 638295) – Henry Beak Bridge (ID 638287) All three Structures were transferred to council in 2004 from Main Roads IPWEAQ CQ Branch Conference - Biloela 2015
Shoal Creek – Causeway Bridge IPWEAQ CQ Branch Conference - Biloela 2015
Shoal Creek - cont. IPWEAQ CQ Branch Conference - Biloela 2015
Fig Tree Creek – Appleton Drive IPWEAQ CQ Branch Conference - Biloela 2015
Fig Tree Creek - cont. IPWEAQ CQ Branch Conference - Biloela 2015
Ross Creek Bridge – Scenic Highway IPWEAQ CQ Branch Conference - Biloela 2015
Ross Creek Bridge - cont. IPWEAQ CQ Branch Conference - Biloela 2015
The Goals Council Targeted the following items as primary deliverables. 1. Structure Rehabilitation. 2. Estimation of materials and works quantities 3. Delivery strategy/program 4. Ongoing requirements 5. Ancillary works IPWEAQ CQ Branch Conference - Biloela 2015
Goals - cont. 1. Council enlisted FORCECOR. Site inspections were undertaken to confirm quantities, cause and effect. 2. Information was compiled against goals and treatments were identified. 3. Program was developed to be “Outcome” not “Process” specific to maximise economic value to council. IPWEAQ CQ Branch Conference - Biloela 2015
Recommended Actions Shoal Creek Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est Spalling in Piers 40MPA) P1,2,3,4 & 6 0.75m 3 12m 2 Renderoc HB40, Sika Monotop 412NFG Expected Lifespan of 10-20yr 1 Reinforcement corrosion Clean to Bright, apply primer and bonding agent P1,2,3,4 & 7 3 m m Nitoprime & Nitobond HAR, Sikatop110 Expected Lifespan of 10-20yr 1 Remove defective cover, clean reo and build up to original profile with Renderoc HB40 or Renderoc LA55 (deep pour cementitious grout with similar compressive strength to original (Est grout), Sika Monotop 412NFG (or 436 deep Nosing Repair 40MPA) All Piers 1.5m 3 15m 2 pour grout) Expected Lifespan of 10-20yr 1 Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est Repair Deck Soffit 70MPA) SPAN 4,5 & 6 8.0 Lineal M 8.0 Lineal M Rendaroc HB70 Expected Lifespan of 10-20yr 1 Clean surfaces with high pressure water blaster ( or other approved abrasion technique) - take back to sound concrete. Resurface with a Abrasion Damage concrete reinstatement mortar or cementitious grout All Piers 120m 2 120m 2 Renderoc HB40, Sika Monotop 723NFG Minimum layer thickness 10mm 2 Apply waterproofing/chloride treatment to blade Piers and All columns and Dekguard E2000, Sikagard550w or Sika Waterproofing/Chloride Inhibitor Headstocks Headstocks 560m 2 560m 2 Ferrogard -903, Aquron 7000 Reapplication interval MIN 10yr 2 Repair to Waterway Area Seal Holes in Base Slab - Place 32Mpa concrete to seal holes SPAN 4,5 & 6 4.0m 3 4.0m 3 32Mpa Concrete 10mm aggregate - 220mm Slump 2 Damaged Batter Protection Seal cracking and repair scoured section Abutment Two 1.0m 3 1.0m 3 32Mpa Concrete 10mm aggregate - 220mm Slump 2 IPWEAQ CQ Branch Conference - Biloela 2015 Apply waterproofing/chloride treatment to underside of deck area in Deck Area all Dekguard E2000, Sikagard550w or Sika Waterproofing/Chloride Inhibitor all spans Spans 660m 2** 660m 2** Ferrogard -903, Aquron 7000 Reapplication interval MIN 10yr 3 **Includes footpath but excludes sides of edge girders
Recommended Actions Fig Tree Creek Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Profile existing wearing surface, apply PMB Spray Seal and surface with Asphalt Replace Wearing Surface wearing surface (Inc. walkway) All Spans 420m 2 420m 2 PMB tack coat, 40mm DG20 Waterproof deck surface 1 Crack Sealing/ Waterproofing/ Chloride Apply waterproofing/chloride treatment to kerbing underside of deck area in Deck Area all Dekguard E2000, Sikagard550w or Sika Ferrogard - Inhibitor all spans Spans 450m 2 450m 2 903, Aquron 7000 Reapplication interval MIN 10yr 1 Remove defective cover, clean reo and build up to original profile with Pier 2 - Piles Renderoc HB40 or Renderoc LA55 (deep pour grout), Crack Treatment of Pile Encasement cementitious grout with similar compressive strength to original (Est 40MPA) 1,2,3,4 0.5m 3 0.5m 3 Sika Monotop 412NFG (or 436 deep pour grout) Expected Lifespan of 10-20yr 2 Install Formalised Joints in Wearing Over all Min 15year lifespan - only to be installed surface Install formalised wearing surface joint treatments over fixed joints Headstocks 48 lineal metres 48 lineal metres Thromajoint (or Equivalent) 2 after wearing surface replacement All Piles and Dekguard E2000, Sikagard550w or Sika Ferrogard - 50m 2 50m 2 Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to all Piles and Headstocks Headstocks 903, Aquron 7000 Re-application interval MIN 10yr 3 Ross Creek Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Remove defective cover, clean reo and build up to original profile with Spalling in Piers cementitious grout with similar compressive strength to original (Est 40MPA) Pier 7 Pile 5 0.1m 3 1.5 Lineal M Renderoc HB40, Sika Monotop 412NFG Expected Lifespan of 10-20yr 1 Reinforcement corrosion Clean to Bright, apply primer and bonding agent Pier 7 Pile 6 1m 1.0 Lineal M Nitoprime & Nitobond HAR, Sikatop110 Expected Lifespan of 10-20yr 1 Replace Spalling Cross Girders Replace Spalling Cross Girders supporting footway and services trench All Spans 32 Units 32 Units Fabricated Galvanised Steel equivalent Expected Lifespan of >20yr 2 Corrosion in Transverse Stressing Bars Clean to Bright, apply primer and apply 2 coats of zinc rich primer All Bars 80 Units 80 Units Wattyl - Enamel DTM985 Min 300 microns or 2 coat’s plus primer 2 Deck Area all IPWEAQ CQ Branch Conference - Biloela 2015 Dekguard E2000, Sikagard550w or Sika Ferrogard - Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to underside of deck area in all spans Spans 800m 3 800m 3 903, Aquron 7000 Reapplication interval MIN 10yr 3 All Piles and Dekguard E2000, Sikagard550w or Sika Ferrogard - Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to all Piles and Headstocks Headstocks 150m 2 150m 2 903, Aquron 7000 Reapplication interval MIN 10yr 3
Recommended Actions • Contract Specification, Schedule and Superintendents Brief were developed • Delivery Model was suggested as being a “Lump Sum” contract with provision of variation with a prelisted Schedule of Rates. • Councils standard conditions of contract are in accordance with “AS4000” • The tender was/will released on the ##/##/## . IPWEAQ CQ Branch Conference - Biloela 2015
Thankyou for your time Questions? IPWEAQ CQ Branch Conference - Biloela 2015
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