3-04Acceptance of Aggregate

3-04 Acceptance of Aggregate3-04 Acceptance of Aggregate

3-04.1 Description

This work shall consist of acceptance of aggregate as provided for under statistical or nonstatistical evaluation. All aggregates shall meet the requirements in Section 9-03 . Acceptance of aggregate by statistical evaluation is administered under Section 1-06.2 . Statistical evaluation will be used for an aggregate material when the proposed plan quantity of the aggregate material exceeds two sublots as shown in Table 1 . Nonstatistical evaluation will be used for the acceptance of aggregate materials when the proposed plan quantity is equal to or less than two sublots as shown in Table 1 .

3-04.2 Materials

Material shall meet the requirements of the following section: Aggregates 9-03

3-04.3 Construction Requirements

3-04.3(1) General

For the purpose of statistical and nonstatistical acceptance sampling and testing, all test results obtained for a material type will be evaluated collectively. Sublot sampling and testing will be performed on a random basis at the frequency of one sample per sublot. Based on plan quantities, the sublot size will be determined to the nearest 100 tons (50 cy). The maximum sublot size will be as defined in Table 1 .

3-04.3(2) Point of Acceptance

The point of acceptance shall be as designated by the Engineer. Multiple sources shall not be placed within the same limits of each separate spreading operation or in such a way that the intermingling of different sources occurs. Individual compaction lifts may be of a different source.

3-04.3(3) Sampling

The sampling of aggregate materials shall be performed on a random basis using WSDOT T 716 , Method of Random Sampling. Samples for acceptance testing shall be obtained by the Engineer, or their designated representative. If ordered by the Engineer, the Contractor shall obtain the sample in the presence of the Engineer or their representative. The aggregate material shall be sampled in accordance with WAQTC FOP for AASHTO R 90 and Section 1-05.6 . The sample size shall be equal to the minimum requirements of WAQTC FOP for AASHTO R 90.

3-04.3(4) Testing Results

The results of all acceptance testing performed in the field and the Composite Pay Factor (CPF) of the lot after three sublots have been tested will be available to the Contractor through WSDOT’s website.

3-04.3(5) Nonstatistical Evaluation

Each lot of aggregate materials produced under nonstatistical evaluation and having all constituents falling within the specification limits shall be accepted with no further evaluation. When one or more constituents fall outside the specification limits, the material will be statistically evaluated. A minimum of three sublots will be sampled and tested, when less than three sublots exist additional samples shall be tested to provide a minimum of three sets of results for evaluation. The test results of the sublots shall be M 41-10 Page 3-13 Acceptance of Aggregate 3-04evaluated in accordance with Section 1-06.2 using the price adjustment factors from Table 2 to determine the appropriate CPF. The maximum CPF shall be 1.00. If the CPF is below 1.00 but is equal to or above 0.75, a price adjustment will be calculated in accordance with Section 3-04.3(8) . When the aggregate does not have established price adjustment factors, use the appropriate price adjustment factors from “Other Materials” as listed in Table 2 .

3-04.3(6) Statistical Evaluation

For statistical evaluation a lot is defined as 15 sublots, the final lot will be increased to a maximum of 25 sublots. All test results obtained for a material type will be evaluated in accordance with Section 1-06.2 . Each lot of aggregate materials produced under statistical evaluation will be determined to be acceptable if the Composite Pay Factor (CPF) when calculated in accordance with Section 1-06.2(2) using the price adjustment factors from Table 2 is 1.00 or greater. The Contractor shall be paid the unit bid price for aggregate materials with a CPF of 1.00 or greater. If the CPF is below 1.00 but is equal to or above 0.75, calculate the price adjustment in accordance with Section 3-04.3(8) . When the aggregate does not have established price adjustment factors, use the appropriate price adjustment factors from “Other Materials” as listed in Table 2 .

3-04.3(7) Rejected Work

3-04.3(7)A General

Work that is defective and does not conform to Contract requirements shall be rejected.

3-04.3(7)B Rejection by Contractor

The Contractor may, prior to sampling, elect to remove any defective material and replace it with new material. Any such new material will be sampled, tested, and evaluated for acceptance.

3-04.3(7)C Rejection Without Testing

3-04.3(7)C1 Rejection Prior to Placement

The Engineer may, without sampling, reject loads or stockpiles that appear defective. Material rejected before placement shall not be incorporated into the work.

3-04.3(7)C2 Rejection After Placement

Any Work rejected after placement shall be removed.

3-04.3(7)C3 Payment for Rejected Material

No payment will be made for the rejected materials unless the Contractor requests that the rejected material be tested. If the Contractor requests to have the rejected material tested, acceptance will be by Statistical Evaluation, and a minimum of three representative samples shall be obtained and tested. If the CPF for the rejected material is less than 0.75, no payment will be made for the rejected material; in addition, the cost of sampling and testing shall be borne by the Contractor. If the CPF is greater than or equal to 0.75, the cost of sampling and testing will be borne by the Contracting Agency. If the material is rejected before placement and the CPF is greater than or equal to 0.75, compensation for the rejected material will be at a CPF of 0.75. If rejection occurs after placement and the CPF is greater than 0.75, compensation for the rejected mix will be at the calculated CPF with an addition of 25 percent of the unit Contract price added for the cost of removal and disposal. Page 3-14 M 41-10

3-04 Acceptance of Aggregate3-04.3(7)D Lots and Sublots

3-04.3(7)D1 A Partial Sublot

In addition to the preceding random acceptance sampling and testing, the Engineer may also isolate from a normal sublot material that is suspected of being defective. Such isolated material will not include an original sample location. A minimum of three random samples of the suspect material will be obtained and tested. The material will then be evaluated as an independent lot in accordance with Section 1-06.2(2) .

3-04.3(7)D2 An Entire Sublot

An entire sublot that is suspected of being defective may be rejected. When a sublot is rejected a minimum of two additional samples from this sublot will be obtained. These additional samples and the original sublot will be evaluated as an independent lot in accordance with Section 1-06.2(2) .

3-04.3(7)D3 A Lot in Progress

The Contractor shall shut down operations and shall not resume placement of the aggregate until such time as the Engineer is satisfied that material conforming to the specification can be produced:

3-04.3(7)D4 An Entire Lot

An entire lot with a CPF of less than 0.75 will be rejected.

3-04.3(8) Price Adjustments for Quality of Aggregate

All aggregate material will be subject to price adjustments. The maximum attainable CPF shall be 1.00. The aggregate Compliance Price Adjustment for acceptance of the aggregate will be calculated as follows: Aggregate Compliance Price Adjustment = CPF – 1.00 (quantity of material) (unit bid price or Contingent Unit Price as shown in Table 1, whichever is higher) For aggregate materials lacking a separate unit bid price, the unit bid prices shall be taken as the value listed in Table 1 for “Contingent Unit Price”. If a component is not measured in accordance with these Specifications, its individual pay factor will be considered 1.00 in calculating the CPF.

3-04.4 Vacant

M 41-10 Page 3-15 Acceptance of Aggregate 3-043-04.5 Payment “Aggregate Compliance Price Adjustment”, by calculation. “Aggregate Compliance Price Adjustment” shall be calculated and paid for as described under Section 3-04.3(8) Price Adjustments for Quality of Aggregate. Table 1 Aggregate Acceptance Parameters Standard Specifications ItemMaximum Sublot Size (Tons)Maximum Sublot Size (CY)Contingent Unit Price Per TonContingent Unit Price Per CY

9-03.1 Concrete Aggregate

(except pavement)2000 10001 $15.002 $30.002

9-03.1 Concrete Aggregate

(pavement)4000 20001$15.002$30.002

9-03.4(2) Crushed Screening3 1000 500 $20.00 $40.00

9-03.8(2) HMA Aggregate 2000 $15.00

9-03.9(1) Ballast 2000 1000 $20.00 $40.00

9-03.9(2) Permeable Ballast 2000 1000 $25.00 $50.00

9-03.9(3) Crushed Surfacing 2000 1000 $20.00 $40.00

9-03.9(4) Maintenance Rock 2000 1000 $20.00 $40.00

9-03.10 Gravel Base 4000 2000 $15.00 $30.00

9-03.11(1) Streambed Sediment 500 250 $30.00 $60.00

9-03.12(1)A Gravel Backfill for

Foundations Class A1000 500 $30.00 $60.00

9-03.12(1)B Gravel Backfill for

Foundations Class B1000 500 $30.00 $60.00

9-03.12(2) Gravel Backfill for Walls 1000 500 $30.00 $60.00

9-03.12(3) Gravel Backfill for Pipe

Zone Bedding1000 500 $30.00 $60.00

9-03.12(4) Gravel Backfill for Drains 500 250 $30.00 $60.00

9-03.12(5) Gravel Backfill for

Drywells500 250 $30.00 $60.00

9-03.13 Backfill for Sand Drains 2000 1000 $30.00 $60.00

9-03.13(1) Sand Drainage Blanket 4000 2000 $30.00 $60.00

9-03.14(1) Gravel Borrow 4000 2000 $15.00 $30.00

9-03.14(2) Select Borrow 4000 2000 $15.00 $30.00

9-03.14(4) Gravel Borrow for

Structural Earth Walls4000 2000 $30.00 $60.00

9-03.17 Foundation Material,

Class A and B1000 500 $25.00 $50.00

9-03.18 Foundation Material

Class C1000 500 $25.00 $50.00

9-03.19 Bank Run Gravel for

Trench Backfill4000 2000 $30.00 $60.00 1Based on 1000 CY of Concrete. 2 Price adjustment only applies to the actual quantity of aggregate used in the concrete. 3Contingent unit price per S.Y. is $0.30. Page 3-16 M 41-10

3-04 Acceptance of AggregateTable 2 Price Adjustment Factors

Standard Specifications Item Maximum Size Sieve: 100% Pass Nominal Maximum Size Sieve: 100% Pass1 Other Specifications Sieves #4 and Larger Specification Sieves: #8 to #100 #200 Sieve Sand Equivalent Fracture2 Other

9-03.1 Concrete Aggregate

(all concrete aggregate -including pavement)2 2 2 1020

9-03.4(2) Crushed Screening 2 2 5 520 15

9-03.8(2) HMA Aggregate 1515 Uncompacted

Void Content 15

9-03.9(1) Ballast 2 2 5 51015 Dust Ratio 15

9-03.9(2) Permeable Ballast 2 2 5 5 15

9-03.9(3) Crushed Surfacing 2 2 5 5101515

9-03.9(4) Maintenance Rock 2 2 5 5101515

9-03.10 Gravel Base 2 5 610 Dust Ratio 10

9-03.11(1) Streambed Sediment 2 2 5 510

9-03.12(1)A Gravel Backfill for

Foundations Class A3

9-03.12(1)B Gravel Backfill for

Foundations Class B2 5 610 Dust Ratio 10

9-03.12(2) Gravel Backfill for

Walls2 2 5 610 Dust Ratio 10

9-03.12(3) Gravel Backfill for Pipe

Zone Bedding2 2 5 5610

9-03.12(4) Gravel Backfill for

Drains2 2 5 6

9-03.12(5) Gravel Backfill for

Drywells2 2 5 6

9-03.13 Backfill for Sand

Drains2 5 310

9-03.13(1) Sand Drainage Blanket 2 5 310

9-03.14(1) Gravel Borrow 2 2 5 5510

9-03.14(2) Select Borrow 2 2 5 5610

9-03.14(4) Gravel Borrow for

Structural Earth Walls2 2 5 5510 Other4

9-03.17 Foundation Material,

Class A & B2 3

9-03.18 Foundation Material

Class C2 3

9-03.19 Bank Run Gravel for

Trench Backfill2 2 5 610 Dust Ratio 10 Other Materials 2 2 5 5101515 Dust Ratio 10 1For Aggregate, the nominal maximum size sieve is the largest standard sieve opening listed in the applicable specification upon which more than 1-percent of the material by weight is permitted to be retained. For concrete aggregate, the nominal maximum size sieve is the smallest standard sieve opening through which the entire amount of aggregate is permitted to pass. 2Price adjustment factor applies where criteria is contained in the material specification. 3Use the price adjustment factors for the material that is actually used. 4Resistivity 10, pH 10, Chlorides 5, and Sulfates 5.