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District 8-0 Winter Construction School February 23rd, 2012 PTM 611 Linda A. Atkinson Bureau of Project Delivery (BOPD) Innovation & Support Services Division (ISSD) Construction Quality Assurance Section (CQAS). PTM 611. - PowerPoint PPT Presentation
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District 8-0 Winter Construction SchoolFebruary 23rd, 2012
PTM 611
Linda A. AtkinsonBureau of Project Delivery (BOPD)
Innovation & Support Services Division (ISSD)Construction Quality Assurance Section (CQAS)
www.dot.state.pa.us
PTM 611
• PTM 611 Making and Curing Concrete Compression and Flexural Test Specimens in the Field
• Revised December 2011
• Change 5 to the 2003 edition of Publication 19
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PTM 611
• Materials Quality Assurance Stewardship Review
– Recommendation
• “Security of field cured cylinders should be improved.”
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PTM 611
• Questionnaire to all 50 States• Best Practices• Dissimilar Acceptance and Quality Control
Processes
– Nothing or Not Applicable (20)– Locks on Cure Boxes (2)– Metal Tags (1)
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PTM 611
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PTM 611
• Metal Tags
>5mm
Saw orGrind into Tolerance
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PTM 611
• Destructible Stickers
• Controlled Environment
• Worked Good
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PTM 611
• Statewide Pilot Project
– 3 Projects per District– Pre-fab facilities
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PTM 611
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PTM 611
• Results…………………….
Some Good
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• Some NOT SO GOOD….
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PTM 611
• Back to Basics
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PTM 611
• Making and Curing Concrete Compression and Flexural Test Specimens in the Field
– Added Section 12
• Identification and Security of Compression Test Specimen Molds and Compression Test Specimens Molded on Construction Projects
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PTM 611
• 12.1 Identification of Specimen Molds
– A PENNDOT Representative shall identify each specimen mold with the following info
• Date Molded• Construction Area• Specimen Type• Series Number• Class of Concrete• AND Most Importantly…….
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PTM 611
• Each Specimen Mold Must Contain the Signature of a
– PennDOT Representative– Contractor’s Certified Technician
• Technician’s Certification Number
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PTM 611
• 12.2 Identification of Specimens
– The PennDOT Representative will transfer the EXACT SAME Info on the Specimens
• Date Molded• Construction Area• Specimen Type• Series Number• Class of Concrete• AND Most Importantly……….
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PTM 611
• Each Specimen Must Contain the Signature of a
– PennDOT Representative– Contractor’s Certified Technician
• Certification Number
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PTM 611
• Date Molded• Construction Area• Series Number• Class of Concrete• Specimen Type• PennDOT Rep Signature• Concrete Technician• Technician’s Certification #
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PTM 611
• TABLE B Section 704
Lot Sizes for Concrete AcceptanceConstruction Areas
Structural Concrete (S)Pavement Concrete (P)Pavement Patching Concrete (PP)Incidental Concrete (M) Pavement Concrete RPS (RPS)
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PTM 611
• Specimen Types
– Acceptance Testing (AT)– Quality Control Testing (QC)– Verification Testing (VT)– Independent Assurance Testing (IA)– Quality Assurance Testing (QA)
