Transcript 2015 State Aid Conference Ramsey County Office Arden Hills, Mn Februar y 19, 2015

2015 State Aid Conference
Ramsey County Office
Arden Hills, Mn
Februar y 19, 2015
Metro Inspection Team
Paul Methven – Engineering Specialist Senior
Tiffany Otte – Office Manager
Deb Evans – Bituminous Plant Coordinator
Rich Gastecki – Concrete Plant Coordinator
Contact by Phone: 651-234-7360
Metro District Materials Web Page (Plant Inspection):
http://www.dot.state.mn.us/metro/materials/plantinspe
ction.html
Send the Web Orders to:
[email protected]
Metro Inspection Team
Paul Methven – Engineering Specialist Senior
Tiffany Otte – Office Manager
Deb Evans – Bituminous Plant Coordinator
Rich Gastecki – Concrete Plant Coordinator
Contact by Phone: 651-234-7360
Metro District Materials Web Page (Plant Inspection):
http://www.dot.state.mn.us/metro/materials/plantinspe
ction.html
Send the Web Orders to:
[email protected]
Metro Plant Issues
Specification Book Update
2014/2015 – Pilot Programs
2015 – 2461 Special Provisions
Metro Plant Inspection Issues
• Have your orders in by 3:00 PM the day before pouring. If you forget to
call in please leave a detailed message so we can get the order in by
6:00 am the following morning or email.
• Make sure you have the correct mix design number (Especially the new
ASTM mixes) before calling.
• If you know the pour has been canceled, change time or plant please
notify us with the change.
• If you are paving less than 150 tons of bituminous please don’t call in.
We will not take any orders less than 150 tons.
• If you send multiple orders in excel document, please let us know if
there is more than just one order in the documents. We may miss the
tabs on the bottom of the spread sheet.
Specification Update
• Published annually, beginning 2016
• New 2015 Special Provisions will start being put in
Letting on February 27 th of this year-(Be sure to check
your contract documents)
• Back to one book
• New Schedule of Materials Control with each spec
book
• Contractor mix designs will be required in 2016 spec
book
2015 Challenges
Contracts let with:
• 2014 Spec Book
• Pilot Projects: 2014 – 12 Projects and 2015 – 20 Projects
• 2015 Special Provisions
Coarse Aggregate Designation
Table 2461-6
Concrete Mix Design Requirements
Slump Requirements
The slump maximum is now showing on the chart. You
will no longer will be allowed to add 1 inch to the slump
if water reducer is added like under the old
specifications of 2014. Max slump is what has been
identified on the new mix design chart.
Acceptance Criteria for Aggregate
Gradations – Contractors Action
Example-Moving Average Chart of
Failing Material on the 3/8” Chart
Moving Average Gradation of Specification Sieves Reduced Contract Unit Price & Lab /Field Tolerance
Change in Schedule of
Materials Control
Why Contractor Mix Designs
• New & Improved material Technology
• Allow increased use of supplementary cementitious
materials
• Allows more flexible use of admixtures
• Producers know and understand there material better
than Mn/DOT
• Make the market more competitive ( reducing costs)
Risks
• Mn/DOT Transfers Risk to Contractor
• Performance mixes
Questions? and/or Comments!
Other Topics
• No longer will provisional technicians be allowed to
sign the 1st certificate of compliance ticket any more
in 2015. They were never supposed to be allowed to
do this in the past. Enforcing rule this next year.
• Under the new 2015 special provision/pilot projects,
cylinders cast in the field will be used as acceptance
testing. So they will have to be handled more
carefully. Contractor to provide cure/storage on-site.
Casting minimum of 3-28 day test cylinders per set.
Pilot project has a 4 th cylinder for a 7 day test age.