STATE OF OHIO[rj1]
DEPARTME[a2]NT OF TRANSPORTATION
SUPPLEMENTAL SPECIFICATION 879
QC/QA FOR EMBANKM[r3]ENT CONSTRUCTION
February 28April 21, 2006June 13, 2005
879.01 Description
879.02 Contractor Quality Control Plan
879.03 Quality Control Plan Acceptance
879.04Acceptance of Field Inspectionor Personnel
879.05 Notification of Non-compliance
879.06Quality Assurance Testing
879.076Incentive Pay Adjustment
879.087 Basis of Payment
879.01 Description. This work consists of performing inspection, compaction testing, documentation, and quality control for the work according to Items 203 and Item 204., supplying the and providing quality control inspection, compaction testing and documentation of the for the work and providing a detailed quality control work conforming to this supplemental specification.
879.02Contractor Quality Control Plan. Submit a Quality Control Plan (QCP) to the Engineer at the preconstruction conference.. Ensure Tthe plan will clearly describes the methods inby which the Quality Control Program will be conducted. If required due to quality assurance inspections, site conditions or other issues, update the QCP during the life of the contract. Receive the approval from the Engineer’s acceptance for all QCP changes prior to implementation.[a4]
A.List the following information inMinimum the qQuality cControl pPlan Requirements:.
[a5]
- 1.[a6] Identifying Information. Document tProvide the project number, route number, location, county, district, and the items to be controlled.
2. [a7]Personnel Requirements. ProvideP. Provide a technician for every filling operation at all times. Provide at least one lead technician per project.
A.Provide personnel according to section 878.02 in Supplemental Specification 878. the name of the company official for the project that is responsible for project quality control and is the liaison [a8]with the Department’s personnel.
Provide a Llist all technicians who will workfor the project. Ensure Aall personnel performing compaction quality control tests are[a9] must be certified compaction inspectors under NICET level II, Construction Materials Testing - subfield Soils. [a10]Ensure the lead At least one technician will have has 5 years relevant experience in addition to the level II NICET certification. Alternate personnel qualifications that document similar experience and training to NICET may be acceptable.[a11]
Example:[a12]
Employer Certification by Testing Agency with AASHTO Soils Accreditation[a13]
Technician Requires:2 years relevant experience[a14]
Training compliant to AASHTO-approved Quality System (R18)[a15]
Verification of performance by supervisor
Lead Technician Requires: 5 years relevant experience[a16]
[a17][a18]
- 3. [a19] Mininum Quality Control Personal. Provide at least one on site technician for every filling operation. If not the lead technician, document how the site technicians will have access to the lead technician.
4. Field Test Methods. ProvideInclude in the QCP the methods to be used to identify the soil types for each test. Perform field test methods according to 878.03 and Section 1015.10 in Supplement 1015.
Table 879.02-1 summarizes the different materials, minimum frequencies[a20], and the appropriate test procedure or[a21] method for controlling each material.[a22]
[a23]
Test and Method / [a24]Lot Size / [a25]Number of Tests / Materials to be testedRoller Passes / 2000 Cubic Yards
(1530 Cubic Meters) / One per lot or[a26] at least one per lift[a27] / Rock, Hard Shale, and Granular Material 703.16 Types D and E
Compaction and Moisture S1015 / 2000 Cubic Yards
(1530 Cubic Meters) / One per lot or[a28] at least one per lift / All Materials except for Rock, Hard Shale, and Granular Material 703.16 Types D and E
Subgrade Compaction and Moisture S1015 / 3000 Square Yards
(2500 Square Meters) / One per lot / All Materials except for Granular Material 703.16 Types D and E
Test Section Method / 2000 Cubic Yards
(1530 Cubic Meters) / One for each type of material[a29] / As Required in S-1015
Shale Tests
203.06.B,703.16.D
and 1015.08 / 2000 Cubic Yards
(1530 Cubic Meters) / Each Shale Type or[a30] one every 5th lot / Shale
Moisture Density Curve
AASHTO
T-99 / Each Material Type / At least One / Granular Materials
Lift Thickness, Roller Passes and Type of Compaction Equipment / 2000 Cubic Yards
(1530 Cubic Meters) / One per lot or[a31] at least one per lift / All materials
Perform inspections and compaction tests according to Supplement 1015 and use the documentation forms in the Construction Inspection Manual of Procedures, Documentation Manual, and as updated on the Office of Construction Administration’s Web site. This may require more than one inspector or compaction person per project.
- 4. [a32]Test Equipment. List [a33]Include in the QCP all necessary test equipment [a34]that will be provided and include a list of the equipment.Provide test equipment according to 878.04.
- Compaction Equipment. Provide a list of compaction equipment according to 878.06.
- Forms, Documentation, Weekly and Final Reports. Provide this work according to 878.08.
For nuclear gauges, include the serial number, manufacturer, model number, calibration data, and frequency of calibrations. Include the documentation for of the 3 block calibration (Minimum every 18 months), leak tests (Minimum every 6 months), and stability tests[a35](Minimum every project) for the each gauges.
For nuclear gauges, Pperform a standard count every week and all other required calibrations during the life of the contract. Provide the Engineer standard count and calibration documentation before using or continuing to use the equipment.
Define the procedure for performing a stability check on nuclear gauges which are not within the tolerance range after the standard count and during the interval between calibrations. Standard counts derived during the stability check for stable gauges may be used in lieu of the manufacturer's standards. Gauges found to be unstable can not be used until repaired and calibrated.
5. [a36]Lot and Sub-lot [a37]Sizes. Include in the plan QCP the lot and/or [a38]sub-lot sizes to be used. During construction, obtain the Engineer’s approval to modify lot sizes may be modified if warranted to maintain a workable system. For example, two or more areas containing small quantities of embankment material might be combined into one lot.
Define a unique numbering method to identify each lot and sublot. Define the numbering procedure to be used when lot sizes are combined or modified.
Quality Control testing
Specify the maximum time for the completion of a lot of embankment material. If not able to obtain the desired lot size in the maximum time period, consider the material placed up to that time will constitute a lot and perform the specified number of tests per lot will be performed.
Perform Qquality control inspections are to be performed during all material placement and shaping operations. Perform Qquality control compaction tests are performed after the material has been shaped and final rolling has been completed. Provide accurate inspection information, tests and calculations.
6.7. [a39]Forms, Documentation and Distribution. Provide accurate inspection information, tests and calculations. Report the inspection and compaction tests on Department forms defined in S 1015. Describe how the completed forms will be distributed and define the time period after inspections, tests and measurements are completed before documentation will be provided.
At a minimum, provide the inspections, test results and measurements to the Engineer daily. At a minimum, provide a summary of the inspections, tests and measurements every 2 weeksweekly. Include all inspections, measurements and test results including failing lots, moisture checks, etc.[a40]
78.. [a41]Compaction Equipment. Provide a list of the compaction equipment and include the quantity, make, model, and weight or applied force thatat which each roller will be operated. If adding ballast to a roller, indicate the type and quantity of ballast along with the method for verifying the gross weight. Include manufacturer's specifications for the compaction capabilities for each roller. or dDefine the quality control procedures that will be used to verify the compaction capabilities of each roller and the documentation methods provided to the Engineer.
Define in the QCP the minimum size rollers that will be used for test sections.
98. [a42]Test Section. Notify the Engineer at least 24 hours in advance of performing a Test Section. Construct and evaluate the test sections according to Supplement 1015.
109. [a43]Laboratory Testing. Specify in the plan QCP the sampling frequency, place of sampling, and test procedures for material requiring laboratory testing. List the AASHTO Materials Reference Laboratory (AMRL) [a44]soils testing laboratory performing the testing. and provide the qualifications of the personnel who will perform the testing.
[a45]
Material Type / Test / FrequencyGranular Material / Moisture Density Curve / At least one for each type of
Material
All Materials / Moisture Density Curve / When required[a46]
110. [a47]Non-specification Material. Define methods for disposition of non-specification material, such as material not allowed by the specifications, material with excessive moisture, the incorrect mixing of different percentages of materials (such as RPCC or asphalt with natural material or shale in rock fills) [a48]etc.[a49] Define the methods for immediately notifying the Engineer when a nonconformance situation is detected.
11[a50].2 Lift Thickness Measurements. List the quality control method(s) and frequencies of inspection for lift thickness measurement. The minimum frequency for lift thickness measurements is specified in this Supplement.[a51] [a52] Include in the QCP the documentation methods for all quality control inspection measurements.
879.03 Quality Control Plan Acceptance. Submit the quality control plan during or before the pre-construction meeting. The Engineer will review and either accept or reject the QCP within 15 working days[a53] of the submittal. If rejected, revise and resubmit the QCP.
The Engineer may require revisions to a the QCP during construction when QA testing shows un-acceptable quality.
879.04Acceptance of Field Inspector Inspection Personnel. Before embankment construction begins or during the first quality control tests, the Department will run side by side nuclear moisture and density tests with each of the Contractor’s field density personnel. Tests results will be within the 3 percent[a54] of the Department’s readings will be considered acceptable.[a55] If results are not within acceptable range[a56], provide the means and methods for correcting the problems.
Define the procedure for performing a stability check on nuclear gauges which are not within the tolerance range after the standard count and during the interval between calibrations. Standard counts derived during the stability check for stable gauges may be used in lieu of the manufacturer’s standards. Gauges found to be unstable can not be used until repaired and calibrated.The Department will accept the field inspection according to 878.05.
879.05 Notification of Non-compliance. Immediately notify the Engineer and the Contractor when any field tests note non-compliance.
879.065Quality Assurance Testing. The Department will perform quality assurance (QA) tests to verify that the compaction conforms to Items 203 and 204. [a57]The Department will test every 5th lot for acceptance. The tested lot will be determined by random number. If the material in said lot does not require a compaction test, such as rock or hard shale and if the material is being placed according to the specifications then the material will be considered to have passed the compaction tests. Lot results will be recorded and will affect the final payment.
A[a58]. Failing Lots. If the random quality assurance lot fails, the Department will test one additional lot of the original five. If only the original lot fails, re-compact the failed lot. If the original and second lot fails, re-compact all five lots represented by the original quality assurance lot tests. Notify the Engineer when any [a59]re-compacted lot is ready for quality assurance verification. The Department will either retest[a60] the lots for acceptance or witness the testing and documentation by the field inspection personnel. If either [a61]the lots fails again the Engineer will stop construction until the leadContractor’s 5 year experienced NICET level II technician determines and resolves the problem and revises the quality control plan to eliminate future problems. The Department will perform quality assurance (QA) tests according to 878.09.
If the material does not require a compaction test, such as rock or hard shale, and it is being placed according to the specifications then the material will be given a passing test.
879.076Incentive Pay Adjustment. The Department will provide a pay adjustment to the final embankment quantities based on the total number of original QA tests for compaction and the number of original QA compaction tests with passing results. Re-test QA tests are not included in the calculation.
The formula method for calculating for pay adjustments is:
Calculate the Percentage of Passing Quality Assurance Tests (PPQAT):
Determine the appropriate Pay Factor Formula:
(Number of passing QA compaction tests) / (Total Number of QA compaction tests[a62]) xX (100)) [a63]= Percentage of passing QA tests. (PPQAT).
Applicable Range of PPQAT / Pay Factor Formula (PFF)[rem64]90 to 100% / 1.00 + 0.04[rem65] [(PPQAT-90)/10.0)]
70 to 90% / 1.00-0.04 [(90[rem66]-PPQAT)/20.0]
Below 70% / 0.96
The Department will adjust the following items by the Pay Factor Formula:[rj67]
Item 203 Embankment,
Item 203 Granular Embankment,
Item 203 Granular Material [a68]Type_____,
Item 204 Embankment,
Item 204 Granular Embankment,
Item 204 Granular Material[a69] Type_____
Item 204 Subgrade Compaction.
The Department will not apply the PFF to any other Item 203 or 204 quantities.
879.08 7Basis of Payment. Include the cost of all worklabor, equipment, and materials necessary to meet this specification in the contract unit or lump sum price for the applicable earthwork items.
The Department will pay for accepted quantities determined by 879.05, 203.10 and 204.09 and adjusted by thethe FPF in 879.07 as follows:[rj70]
Bid price per cubic yard (cubic meter) of Item 203 Embankment, Granular Embankment and Granular Material Embankment[a71] Type_____ x FPF
Bid price per cubic yard (cubic meter) of Item 204 Embankment, Granular Embankment and Granular MaterialEmbankment[a72] Type_____ x FPF
Bid price per square yard (square meter) of Item 204 Subgrade Compaction x FPF
The Department will not apply the FPF to any other Item 203 or 204 quantities.
[a73]
Designer Note: Use this note when construction personnel are limited and the District wants full time inspection and compaction testing for the work.[a74][a75][a76] For estimating purposes use the maximum incentive. Contact the District Construction Engineer before incorporating this note into the plans.
SS 878 and 879 are very similar specifications. SS-878 pays for the inspection and compaction testing as a lump sum pay item and covers Items 203, 204, 205, 206, 304, 307, 411, 503, 603 and MSE wall select granular embankment. SS-879 pays for the work as an incentive pay to the contract. The Contractor would be more responsible for the work under 879 but SS-879 only covers Items 203 and 204.
[a77][a78][a79][a80][a81][a82][a83][a84][a85]
[rj1]ODOTQC ckeck completed 3/2/2006 by rej
[a2]This is a summary of all the comments received on this specifications
[r3]This specification was corrected to correspond to the changes the specification committee made to 878 on February 15, 2006.
[a4]Include the following in the QCP. CM
[a5]Delete CM
[a6]Make this A. CM
[a7]Make this B. CM
[a8]Should this be P.E.? CM
[a9]Are should be “will be” LW
[a10]Provide at least one lead technician per project who LW
[a11]Should minimums be spelled out? Or left to Districts D2
[a12]Same comments as SS878. What is this an example of? DM
[a13]So if I read this correctly, I get that the testing employer (contractor) can get his personnel trained by another lab. One that has R18 Soils Accreditation. Are private test labs going to do this? JW
[a14]Additional requirement or example? DM
[a15]Refers to the Quality Systems manual (AMRL). JW
[a16]Already stated above. If this is part of the example, is this what you want the contractor to submit, a statement that the lead technician requires 5 years experience, or do you want them to submit a list of the relevant experience, almost like a resume? DM
[a17]Confusing. Did you want to add additional requirements here (i.e. Training complaint to AASHTO- apprved Quality System)? OR does the Lead Technician have to have level III NICET Trainging (No experence)? May just want to leave this entire example out. JW
[a18]Delete “lead technician requires: 5 years relevant experience." LW
[a19]Make this C. CM
[a20]Change this to ‘number of tests’ to match table CM
[a21]Make this ‘and’ to match table CM
[a22]Table should be deleted as it duplicates information from other specifications. Change to any of those specs will require change to this one, but it might get overlooked, creating a conflict. Which spec would govern? DM
[a23]I think this table needs clarified. Maybe put into narrative? D-10
[a24]Maximum CM
[a25]Minimum CM
[a26]Make this ‘and’ or ‘with’ CM
[a27]Should these all also say one per day? D2
[a28]Make this ‘and’ or ‘with’ CM
[a29]Or one every 5th lot D-10
[a30]Make this ‘and’ or ‘with’ CM
[a31]Make this ‘and’ or ‘with’ CM
[a32]D. CM
[a33]Define instead of list LW
[a34]Delete that will be provided and add “required and include a list of the equipment.” LW
[a35]AASHTO T310 defines the stability tests be performed every day. Not every week. This is also true for the ASTM procedure D2922. LW
[a36]E. CM
[a37]What is a sub-lot and what is it’s maximum/minimum size? CM
[a38]Shouldn’t this be ‘and, if applicable,…’ Will sub-lots always be used? CM
[a39]F. CM
[a40]Add forms to SS D2
[a41]G. CM
[a42]H. CM
[a43]I. CM
[a44]THERE ARE 21 LABS IN OHIO WITH SOILS CERTIFICATION LW
[a45]What is the purpose of this table? We should reference it in Item 9. CM
[a46]What constitutes when required? D2
[a47]J. CM
[a48]Should they clarify how they plan on blending materials in the first place? D2
[a49]Are these all supposed to be examples of non-specification materials? The first two are examples of non-spec materials, but the third is an example of disposition. Should all be consistent examples. CM
[a50]K. CM
[a51]This is a Supplemental Spec. not a Supplement. Where is minimum frequency for lift thickness measurement specified? CM