LSC Bridge Rehabilitation Project Presented by: Arvind Singh - - PowerPoint PPT Presentation

IPWEAQ CQ Branch Conference - Biloela 2015

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

Shoal Creek

Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Spalling in Piers Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est 40MPA) P1,2,3,4 & 6 0.75m3 12m2 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 Nosing Repair Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est 40MPA) All Piers 1.5m3 15m2 Renderoc HB40 or Renderoc LA55 (deep pour grout), Sika Monotop 412NFG (or 436 deep pour grout) Expected Lifespan of 10-20yr 1 Repair Deck Soffit Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est 70MPA) SPAN 4,5 & 6 8.0 Lineal M 8.0 Lineal M Rendaroc HB70 Expected Lifespan of 10-20yr 1 Abrasion Damage Clean surfaces with high pressure water blaster ( or other approved abrasion technique) - take back to sound concrete. Resurface with a concrete reinstatement mortar or cementitious grout All Piers 120m2 120m2 Renderoc HB40, Sika Monotop 723NFG Minimum layer thickness 10mm 2 Waterproofing/Chloride Inhibitor Apply waterproofing/chloride treatment to blade Piers and Headstocks All columns and Headstocks 560m2 560m2 Dekguard E2000, Sikagard550w or Sika 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 4.0m3 4.0m3 32Mpa Concrete 10mm aggregate - 220mm Slump 2 Damaged Batter Protection Seal cracking and repair scoured section Abutment Two 1.0m3 1.0m3 32Mpa Concrete 10mm aggregate - 220mm Slump 2 Waterproofing/Chloride Inhibitor Apply waterproofing/chloride treatment to underside of deck area in all spans Deck Area all Spans 660m2** 660m2** Dekguard E2000, Sikagard550w or Sika Ferrogard -903, Aquron 7000 Reapplication interval MIN 10yr 3

**Includes footpath but excludes sides of edge girders

Recommended Actions

IPWEAQ CQ Branch Conference - Biloela 2015

Recommended Actions

Fig Tree Creek

Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Replace Wearing Surface Profile existing wearing surface, apply PMB Spray Seal and surface with Asphalt wearing surface (Inc. walkway) All Spans 420m2 420m2 PMB tack coat, 40mm DG20 Waterproof deck surface 1 Crack Sealing/ Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to kerbing underside of deck area in all spans Deck Area all Spans 450m2 450m2 Dekguard E2000, Sikagard550w or Sika Ferrogard - 903, Aquron 7000 Reapplication interval MIN 10yr 1 Crack Treatment of Pile Encasement Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est 40MPA) Pier 2 - Piles 1,2,3,4 0.5m3 0.5m3 Renderoc HB40 or Renderoc LA55 (deep pour grout), Sika Monotop 412NFG (or 436 deep pour grout) Expected Lifespan of 10-20yr 2 Install Formalised Joints in Wearing surface Install formalised wearing surface joint treatments over fixed joints Over all Headstocks 48 lineal metres 48 lineal metres Thromajoint (or Equivalent) Min 15year lifespan - only to be installed

after wearing surface replacement

2 Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to all Piles and Headstocks All Piles and Headstocks 50m2 50m2 Dekguard E2000, Sikagard550w or Sika Ferrogard - 903, Aquron 7000 Re-application interval MIN 10yr 3

Ross Creek

Defect Treatment Location Est QTY Schedule QTY Recommended Product* Serviceability Criteria Priority Spalling in Piers Remove defective cover, clean reo and build up to original profile with cementitious grout with similar compressive strength to original (Est 40MPA) Pier 7 Pile 5 0.1m3 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 Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to underside of deck area in all spans Deck Area all Spans 800m3 800m3 Dekguard E2000, Sikagard550w or Sika Ferrogard - 903, Aquron 7000 Reapplication interval MIN 10yr 3 Waterproofing/ Chloride Inhibitor Apply waterproofing/chloride treatment to all Piles and Headstocks All Piles and Headstocks 150m2 150m2 Dekguard E2000, Sikagard550w or Sika Ferrogard - 903, Aquron 7000 Reapplication interval MIN 10yr 3

IPWEAQ CQ Branch Conference - Biloela 2015

• 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 ##/##/##.

Recommended Actions

IPWEAQ CQ Branch Conference - Biloela 2015

Thankyou for your time

Questions?