2009 student lesson 2 sampling - ctqp home page level 1/02 - 2009...student manual lesson 2-...

Student Manual Lesson 2- Sampling Aggregates

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It is your responsibility to have the tools to perform your tasks Therefore it isIt is your responsibility to have the tools to perform your tasks. Therefore, it is imperative that you develop your “Tool Box” to include all those items listed above and any others that you feel may be helpful.

REMEMBER – ONCE YOU ARE ON THE JOB IT IS A LITTLE LATE TO BE LOOKING FOR A TAPE, OR A PENCIL, ETC.

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The Sampling Testing and Reporting Guide (STRG) and Job Guide are your guidesThe Sampling, Testing, and Reporting Guide (STRG) and Job Guide are your guidesto the types and numbers of tests required on a project. This document, or green bar,can be quite extensive as it covers all sampling and testing required on the project,down to items such as fencing, painting, etc.

It may be your responsibility to review the Job Guide and locate and be familiar withthose tests you are responsible for.

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The Sampling Testing and Reporting Guide can be located at:The Sampling, Testing and Reporting Guide can be located at:

www.dot.state.fl.us

Click on: 1. Offices (select Materials)

2. Select “Documents/Publications

3. Go to S-T category, select Sampling,

Testing and Reporting Guide

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Level=This denotes the level of responsibility. Who is responsible.Q= QC (Contractor)V= Verification DepartmentIV= Independent Verification

Mat’l ID= denotes the Material Identification Number.For example: 004L = embankment laboratory

004F = embankment field004F = embankment field030 = Base

Material Description= material descriptionAuthority= refers to the governing Specification sectionYear= of the governing Specification section

Method of Acceptance= indicates acceptance method ( Is a Test to be performed or is thi t d b Mill C tifi ti )this accepted by Mill Certification)Test Code= refers to the method to be used.Test Description= refers to the name of the Method.Sampled= denotes who samplesTested= denotes who performs the testLaboratory= denotes which laboratory is responsible.

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Sample Size= the size of the sample needed# Tests= number and frequency of testsPer Qty= denotes the frequencyQPL # Req’d= Indicates whether a Qualified Products List number is required


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Why Sampling in the Field?

What are We Sampling?What are We Sampling?

What type of Sample?

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3. Significance and Useg

3.2…….Samples for tests used in the Department’s quality assurance program arecollected by the designated parties in the producer’s Quality Control Program, theDepartment, or the Department’s designee.

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4. Securing Samplesg p

4.1 General – Where practicable, samples to be tested for quality shall be obtained from the finished product…..

4.3 Procedure:

4.3.1 Sampling from a Flowing Aggregate Stream (Bins or Belt Discharge)

4 3 2 Sampling from the Conveyor Belt4.3.2 Sampling from the Conveyor Belt

4.3.3 Sampling from Stockpiles or Transportation Units

The STRG specifies where the samples are to be taken and sets forth a minimumfrequency of sampling. Sampling from the methods listed above is NOT preferred.

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4. Securing Samples (Cont.)4. Securing Samples (Cont.)

4.3 Procedure (Cont.):

4.3.4 Sampling from Roadway (Bases, Subgrade and Embankment) – Sampleunits selected by a random method, such as Practice D 3665, from theconstruction. Obtain at least three approximately equal increments, selectedat random from the unit being sampled, and combine to form a field samplewhose mass equals or exceeds the minimum recommended in 4 4 2 Takewhose mass equals or exceeds the minimum recommended in 4.4.2. Takeall increments from the roadway for the full depth of the material, taking careto exclude any underlying material. Clearly mark the specific areas fromwhich each increment is to be removed: a metal template placed over thearea is a definite aid in securing approximately equal increment weights.

Wh li f R d b b d & b k t t i lWhen sampling from Roadway, bases, subgrade, & embankment materials, youshould collect samples at a minimum of three locations to make your compositesamples. Obtain enough composite sample, you don’t want to be short of material.Remember: Entire width and thickness.

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4 Securing Samples (Cont )4. Securing Samples (Cont.)

4.4.2 ….The masses must be predicated on the type and number of tests to which the material is to be subjected and sufficient material obtained to provide for the proper execution of these tests…..

Sample size is important. If there is not enough material to conduct the tests, time and effort are wastedeffort are wasted.

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This sample transmittal card is used for many types of materials Be sure to fillThis sample transmittal card is used for many types of materials. Be sure to fill in all related fields.

Material Description- In describing the material, these items should be included:

• Color (i.e. gray)

M j tit t (i d)• Major constituent (i.e. sand)

• Secondary constituents in order of least to most (i.e. slightly clayey, silty)

• Other minor materials present, such as shell fragments, minor organics, etc.

• Texture

M i t diti t ti f li• Moisture condition at time of sampling

The following page is a larger size copy of the card with the key number descriptions.

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1. PROJECT ID - Refers to the Financial Project ID Number.

2. PAY ITEM NO - Refers to the Pay Item Number as found in the Job Guide Schedule for that particular project. NOTE: If the sample being

submitted represents more than one pay item, then leave this area blank and note the corresponding Pay Item Numbers in the Remarks section

(see number 40 below).

Numbers 24-39 omitted, due to material type (not soils related)

( )

3. MATERIAL NO - Refers to the Material Number as found in the Sampling, Testing and Reporting Guide (STRG).

4. SAMPLE NO - This is the number assigned to each sample.

5. DATE SAMPLED - this is the date the sample was actually taken.

6. STA FROM - Refers to the beginning Station Number that the sample represents.

7. STA TO - Refers to the ending Station Number that the sample represents.

8. SAMP FROM - Refers to where the sample was taken from. Example: Truck Mixer, Borrow Pit, Stock Pile, 34+06,164+67.

9. RDWY SIDE - Refers to which side of the roadway the sample was taken from(C, L, R). NOTE: Undivided Hwy - C (composite), Divided - L or R.

10. OFFSET DISTANCE - Measured distance from the Reference Line as shown in the plans.

11 OFFSET DIRECTION refers to which direction left (L) or right (R) from the reference line that the sample was taken11. OFFSET DIRECTION - refers to which direction, left (L) or right (R), from the reference line that the sample was taken.

12. MAINLINE - Enter 'Y' if sample is referenced to the mainline roadway and 'N' if not.

13. REFERENCE LINE - Refers to the Controlling Line of the project as shown in the plans.

14. SOURCE - Most commonly used 2-digit codes: 03 - Pit, 05 - Plant, 08 - Jobsite.

15. PLANT/PIT NO - Refers to the Assigned F.D.O.T. Plant or Pit Number that the sample actually came from.

16. QUANT REP - Refers to the total Quantity of material that the sample represents

17. INTENDED USE - Refers to what the Sampled Material is being used for.

18. INSP ID - Record the Technician Identification Number of the person who actually collected the sample. This may, or may not, be different from

the person (see number 35 below) who performed any required field tests or prepared the samples for delivery to the lab.

19. ROAD NO - Refers to the State/County/City designated Road Number.

20. DISTRICT NO - Refers to the District Number that the project is located in.

21. COUNTY - Refers to the County Name that the project is located in.

22. CONTRACT - Refers to the Contract Number of the project as found in the project contract.

23. MATERIAL DESC - Describe the material being sampled. Please be as descriptive as possible in the space allowed.

NOTE: Items 40-43 below apply to all submittals regardless of the material involved.

40. LIMS ID NUMBER: This is the tracking number assigned by the LIMS upon log-in of the sample.

41. REMARKS - Used to provide any additional information that the Inspector deems necessary. Also used when sample submitted will represent

more than 1 Pay Item Number or multiple Project Numbers (see number 2 above).

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42. CONTACT - Name of person to contact if additional information is needed.

43. PHONE - Phone Number of Contact Person.

44. ADDRESS - Physical address of Contact Person.


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5 Shipping Samples5. Shipping Samples

5.1 Transport aggregates in bags or other containers so constructed as topreclude loss or contamination of any part of the sample, or damage to thecontents from mishandling during shipment.

5.2 Shipping containers for aggregate samples shall have suitable individualidentification attached and enclosed so that field reporting, laboratory logging,and test reporting ma be facilitatedand test reporting may be facilitated.

Additional Helpful Hints

Each sample bag should be labeled with permanent marker with the following information:information:

• Project Number

• Sample Date

• Bag Number (i.e. 1 of 1, 1 of 2, 1/1, 1/2, 2/2)

• Type of Sample

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The purpose of this document is to provide a User Manual for LIMS (LaboratoryThe purpose of this document is to provide a User Manual for LIMS (LaboratoryInformation Management Software). As the Department moves toward completeelectronic data and document management and storage each user will have moreprograms to become familiar with and use. Each of the document and data managementprograms is intended to make the Department more efficient and better able to use, store,and handle all of the documents and data related to building and maintaining our State’stransportation infrastructure.

Additional information on LIMS can be found in the Appendix.

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Log IngLIMS automatically assigns a Sample Identification Number. This number is the primary keyused to track a sample through the sample life cycle.

ReceiptAfter a sample is logged into LIMS, it must be received before it can be tested and resultsentered into the database. Sample receipt is only required when samples are logged-inbefore actual receipt.p

Result EntryResults are entered by test code. White fields require input, gray fields either retrieve dataor are filled in when the calculation is performed. LIMS compares the test result with aseries of limits that have been established for that test. LIMS assigns pass or fail that meetsthe criteria.

ValidateValidateValidation is an automatic review of the technician and /or laboratory performing the test.The assignment of the code “V” or “I” is performed by LIMS.

ApproveApproval is the process where a comparison is made to another sample if one is available.

Reporting

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The Reporting capability ranges from a routine certification of a sample to automaticallygenerated exceptions or failure reports that alert key Users by e-mail.


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NOTES

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