If a test result fails to meet the requirement for contract compliance, you may test additional previously taken samples to determine the quantity of material represented by the failing test result. Ensure any damaged materials are repaired or replaced. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ). Aggregate Baserock is a dense graded blend of coarse and fine aggregate which when properly placed and compacted provide a stable and durable base allowing further construction.Aggregate Baserock Should Demonstrate: ADVANTAGES OF USING BASEROCK FROM WILSON QUARRY (AROMAS).
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(Refer to Section 3-609A, Operating Range and Contract Compliance, of this manual.) 3) In general, measure trimmings when the cost of such measurement does not exceed the anticipated deduction. Intermittent sampling and testing of aggregate base materials. Include the following steps in the preliminary review and inspections: During work operations, do the following: Suggested levels of inspection for typical aggregate base work activities are: Guidance for quality control activities included in this section is summarized as follows: Review the quantity calculations in the resident engineers file to determine if they are sufficiently detailed and accurate to be used in the project records. If you think you may be sitting on a mine, please contact us at 701.699.5171. Low Clay Content provides for greater performance and workability in high moisture situations. Some material may be lost during any trimming, and district personnel will decide when to measure the trimmings. Refer to Section 5-1.20B(4), Contractor-Property Owner Agreement, of the. At present, Graniterock is the only supplier to use Statistical Process Control (SPC) to control the production process. Compare sand equivalent and grading test results with requirements for operating range and contract compliance. Uh oh, there was an error sending your message. The grade will be established from markings on the final grade stakes that Caltrans Surveys set. Benchmark inspection of finished surface grading plane. Intermittent inspection for verification of material deliveries where aggregate base is paid for by weight. uyy i(Q0Q6]XXBXIc[%h6g.%yffzf~)D
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Sheyenne Pit and Gowan West have NDDOT Material Source Approval Certificates, and are Approved Recycle Sites for Concrete and Asphalt. Versatility: Can be used in a variety of applications. 763.441.1100
If mutually agreed with the contractor, hold a preconstruction meeting with the contractor and the district Materials Unit prior to construction to discuss the quality control plan and contractors method for performing each element of work affecting material quality, including acceptance testing priorities, shipping of samples, lines of communication for test results, timeframes for reporting quality control and acceptance test results, and any contractual testing dispute resolution processes. a9SJQ.k2&RWpX&A /Vf cSj3]\&(,J5']tG{Bzw+|v; Ensure the contractor is actively performing quality control on aggregate base materials throughout production operations by reviewing copies of quality control records, including quality control test results. @YHpULYL?HP$M` Technical Support available for assistance. The frequency table has a provision for reducing R-value testing, but exercise caution when doing so. Do not reduce R-value frequency when failing or borderline test results occur. Observe the spreading and compacting operation to ensure that it conforms to the layer thickness requirements of the specifications. (Refer to the. Action and suspension limits, and details of corrective action to be taken if any process is outside of those limits. This prevents the vehicles from sinking into the soil, particularly during wet weather. You May Pick-up at Our Facilities Or We Will Deliver To You! You can rest assured we will handle your property like it is our own, with respect to regulation, safety, the environment and you. Measure the surface of the finished aggregate base for conformance to tolerances specified in Section 26-1.03E, Measure the thickness of the completed aggregate base. Our quality base products are available in a variety of colors and product choices to meet your specification & pocketbook. For instance, you do not need to note any compaction tests taken, because these are recorded elsewhere. Consider reducing frequency when the initial test results show R-values significantly exceeding the specified R-value and ongoing gradation and sand equivalent test results indicate acceptable and consistent material quality. Specifications provide limits on the contractors equipment and operations. Responsibilities of subcontractors and testing laboratories. The Bid Item List and plans specify the class and unit of measurement, and the Standard Specifications and special provisions provide the requirements for each class. The minimum acceptable thickness equals the planned thickness minus the sum of the specified tolerance for high subgrade and the specified tolerance for low-finished aggregate base surface. 2s}'gd0|Z|npPLDY!"76Ev^%Y!lVv::Jz\k|q2:3%'Y1F5}G9u",WEW-.=AD-.&b]$Mn>4PrNRe2EI>o:TAI=:yniY")!OncC;Zp}4gfQHJoEmH Time and frequency of submitting test results. Use to stabilize shoreline erosionmeets MN DOT 3601-2 Specification. 4@K This makes the structure more stable as the aggregates will not be prone to shrinkage, as much as soil. We can send our team of experts out to test your property for materials we need. hb```ylx(0Bkv5y[\Bg^L@a ,`Rda`d -d\EJWBLw20TEsCz
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lw;1@Fv awn/F"ta,^voy'8>v>}_? Examine the subgrade to ensure that it has not deteriorated since it was tested and that it is still firm and stable. Note in the daily report any wasting of material. %%EOF
If payment is by weight, measure waste and deduct those quantities. The subgrade tolerances can be found in the specification for the subgrade material. Graniterock has a 100 year history of providing high quality products and service. Note in the daily report any inspections performed on items that are not otherwise part of a permanent record. endstream
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Aggregate base is designated as Class 2 or Class 3. Ensure that the aggregate base is spread on the subgrade without significant segregation. ]?qqxtFJ;@\F"l?~y12\GvP*Ts5Kc&m^VY@{. $sXmqGSvTXjq
4:::pV2S y0s@Dd``8,I$7YX10p/3d& PPp]Ss44XCr>. Test the relative compaction of aggregate base layers using the area concept procedures under California Test 231, Method of Test for Relative Compaction of Untreated and Treated Soils and Aggregates Using Nuclear Gage.. Complete testing early enough before placement to allow time for any redesign needed. It is important that the proper amount of water is evenly distributed in the aggregate at the time of compaction. 0
Unpaved roads and parking areas may be covered in a surface layer of aggregate to provide a more solid surface for vehicles, from cycles to trucks. 0B+ 8Z! (Provides improved Jobsite Flexibility), Graniterock can provide delivery to your jobsite if desired. 53063 0 obj
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If the contractor disputes Caltrans acceptance results, follow Section 23-1.01D(1)(b), Test Result Disputes, of the. They are also useful for water filtration. If the pavement structure cross sections show aggregate base to be placed on soil, verify the design Rvalue by testing the basement material at the grading plane to verify the planned aggregate base thickness shown in the pavement structure. The National Safety Council recommends a minimum depth of 12 around equipment, in a 6 fall zone.Pea Gravel Flyer, Plaisted Companies Inc | All Rights Reserved, 3/8 1/2- 3/4 Pipe Bedding Rock (round), 2 Crushed Granite Construction Entryway Rock. Durability: Resist degradation due to use (after proper placement and compaction). The smart choice for playgroundsimproves safety, drainage and overall sanitation. Typical cross section sheets of the contract plans show the thickness and layer placement of aggregate base within the pavement structure, and layout sheets show where to place it. Aggregates are used in construction and landscaping to provide drainage, fill voids, protect pipes, and to provide hard surfaces. If aggregate base will be paid for by weight, obtain the optimum moisture content from the aggregate base moisture-density compaction curve and sufficient moisture samples to determine pay quantity adjustments. .D J{i7MV=* hbbd``b`
$? Refer to Section 4-96, Geosynthetics, of this manual for additional guidance on geosynthetics. 1" minus Reclaimed / Unclassified Gravel (when available), Asphalt Millings, screened to 1" and less (When Available), KD Recycling, Inc. provides a wide range of aggregates. 53089 0 obj
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Ensure that the geosynthetic materials are not damaged during placement, spreading, and compaction of the aggregate base. Meets Specification: No rejections due to inferior material. Do you think you may have aggregates or materials we can use on your property? Consistency: Product is the same load after load. Where geosynthetic materials are shown, ensure materials are properly placed, including overlapping requirements and securely holding materials in place during aggregate base placement. Sample the aggregate base at the time it is deposited on the roadbed. The. %PDF-1.6
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When preparing the foundations, gaps and trenches may be filled with aggregate, because it is easier to compact than the original soil that was removed, resulting in a more solid finish that will support the structure. Observe delivered aggregate base to ensure that it is clean of debris and other harmful materials. This section provides guidelines for inspecting aggregate bases for work specified under Section 26, Aggregate Bases, of the Standard Specifications. Intermittent inspection of placement, spreading, and compaction operations. (One call ordering and delivery), GraniteXpress loading capability minimizes product segregation. Measure the subgrade grading plane for compliance with elevation tolerance requirements for the material involved. Chapter 1 - Caltrans Construction Organization, CalOES: Power Outage and Fire Recovery Resources, Chapter 4: Construction Details, Section 26: Aggregate Bases, Obtain the contractors quality control plan, which details the methods the contractor will use to ensure quality of work and conformance with the. Water will percolate through a trench filled with aggregate more quickly than it will through the surrounding soil, thus enabling an area to be drained of surface water, useful in wet or marshy areas, or to provide a solid base in driveways, which have a tendency to be too soft for vehicle transit. We are open Nov 21st2022 to April 24th2023~Please call for hours, Friday May 27th & Saturday May 28th regular hours, Saturday July 2nd and Monday July 4th-Closed, Saturday Sept 3rd and Monday Sept 5th-Closed, Gravel & Aggregates in the Twin Cities and Surrounding Areas. endstream
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Watering and compacting go hand in hand. )FP#$&;*+/Iu[iU6m|h :@]qP )Co;YCs@&&Ydplo0IUd=
~h+.tT#bq(UW^m|B"1e[iJGOL. Contractor Product List. However, you do need to explain in the daily report any absence of testing. Before placement begins, review the contract plans and specifications to determine the aggregate base requirements. }#mkK/_vNV/*B41C~~q![ G?NuvJU
M~I[8Rfp4?_(J6 (Provides improved Product Quality, Consistency, Predictability, and Acceptance). All aggregates and road base material are considered compact-able materials and will make a firm driving surface for a range of applications, from cart paths to road construction base: Our washed and screened rock meets residential radon mitigation requirements, Section AF103.2 of the Minnesota Residential Energy Code.Foundation Rock Flyer. The quality control plan must include, but is not limited to: Frequency of quality control sampling and testing that meets or exceeds specification requirements as listed in Section 26-1.01D(2)(d), Quality Control Testing, of the. Use your judgment to determine the number of measurements necessary. (Refer to Topic 614, Soil Characteristics, in the, Test potential sources of aggregate base when the contractor requests such testing in writing. Building a shed or summerhouse in your yard?
Include in the project records an explanation of why you reduced R-value testing. Make quantity calculations as early in the project as possible. Determine the extent of this measurement based on factors such as the nature of material, the efficiency of the contractors operation, and the accuracy of the grading operation (as indicated during the early stages of checking). If aggregate base will be paid for by volume, calculate the volume based on the dimensions shown on the plans. Stability: Resist deformation when under load (after proper placement and compaction). Availability: Product is locally available when needed. Suspension limits must not exceed specified acceptance criteria. Observe the compacting operation to ensure that the material forms a uniformly firm, stable base. High Daily Production and Shipping Capacity (Can Handle Large & Small Jobs), Class 2 and Class 3 Products are available 24 hours/day, 7 days/week thru GraniteXpress Loadout. Deduct applicable Caltrans costs for sampling and testing from contract payments as required under Section 6-1.03. Review compaction tests of the subgrade that is to receive aggregate base. Determine whether the contractor has complied with all requirements related to the use of local materials. Aggregates generally are not affected by the weather as much as soils, particularly clay soils. Normally you would verify this through observation, but if problems persist, support your observations with a sieve analysis. For sampling and testing requirements, including frequency of testing, refer to Chapter 6, Sampling and Testing, of this manual. Easy to Place & Compact: Product is workable and predictable. Benchmark inspection of subgrade grading plane. Content, including images, displayed on this website is protected by copyright laws. We make our own Class 5 Gravel and Recycled Concrete at our Elk River, MN facility. When subgrade is cohesionless soil and you decide that the subgrade is unstable for placing aggregate base on the roadbed in layers or windrows, you may give the contractor written permission to dump aggregate base in piles and spread ahead. hTmo0+RKi'"VC Give special attention to isolated areas where pumping occurs. Make certain of the Product RequiredProject Service Requirements (Heavy or Light Use), Product Maximum Particle Size (1 or ), Specifying Agency (Caltrans, Green Book, or Other), Special Provisions addressing additional Baserock specifications, Certification Required (Submittals) (Forward Information to Supplier), Quantity Required (Specific GravityConversion Tons to Cubic Yards), Product Availability (Available when required, can handle Daily Shipping Requirements), The Reputation of your Supplier and their Products & Services, 100% Crushed Granite (Provides Superior Stability and Durability), Many different Baserock types available:Class 2 Base (1 & ) (Crushed Miscellaneous Base), Aggregate Subbase (1 & ) (Caltrans Class 1 thru 3), High R-Value & Sand Equivalent demonstrates the low clay content (Provides Improved Consistency & Predictability). You also need to note that construction is being performed according to specified layer thicknesses, because this information is not recorded elsewhere. Quality control manager if the quantity of aggregate base exceeds the requirements listed in the QC Testing Frequencies table of Section 23-1.01D(2)(d), Quality Control Testing, of the. If aggregate base is paid for by weight, refer to the discussion of weighing and metering procedures in Section 3-902E, Weighing Equipment and Procedures, of this manual. Note that it is prudent to take frequent samples, especially with borderline test results, but test only at the frequency shown in the table in Section 6-1 of this manual. When measuring for compliance, spot-check the staked locations and areas between stations where stakes are set. If segregation is taking place, it can sometimes be avoided by wetting the material before it is hauled to the job or before spreading operations start. Downloading, republication, retransmission or reproduction of content on this website is strictly prohibited. Proven Product Track Record (Aggregate is widely accepted and approved), Wilson Quarry Products are recognized as the Industry Standard in the Monterey Bay Area, Qualification Testing procedure minimized. If so, Gowan Construction would like to hear from you. Intermittent review of contractors quality control program including quality control test results. For requirements related to material quality, perform the tests at the frequencies shown in Section 6-1, Sample Types and Frequencies, of this manual.