4-PW-ENG-02.19 (I) CoRR MinimumTestingRequirements.pdf

CITY OF RIO RANCHO

MINIMUM TESTING REQUIREMENTS

Revised Date: 9/20/2024

The City of Rio Rancho (CoRR) has created the following Minimum Testing Requirements (MTR) for all Public Works Construction projects to maintain consistency with established procedures, standards, and specifications by combining the requirements from multiple documents into one easy to understand table of Minimum Testing Requirements per material type and type of work. The City of Rio Rancho City Engineer or their designee may update these Minimum Testing Requirements at any time to control the quality of material(s), processes and methods and as new materials, processes, and methods are created and updated. It is the City’s goal to stay current on construction methods, and the processes and methods used locally. If you have any questions regarding the following requirements, please contact the CoRR Project Manager for your project for further guidance.

A full list of City of Rio Rancho Standard Specifications and Details – Including Drawings, can be found on the CoRR website here.

This document is intended to be used in conjunction with the information available in the link above. Further information regarding any NMDOT Standard Specifications for Highway and Bridge Construction (E.G NMDOT 910 “Aggregate Index”) can be found here and The Local government Road Fund Minimum Testing and Inspection Requirements current edition.

The requirements and standards listed below were selected from commonly used standards, specifications, and requirements used or required by the CoRR during construction projects.

All testing must be done by an accredited and approved laboratory, all technicians and inspectors working on City of Rio Rancho projects must have current TTCP or testing will not be accepted by the City of Rio Rancho and all costs associated with any re-work or re-testing will be at the contractor’s expense.

https://www.rrnm.gov/4554/Standard-Construction-Specifications https://www.dot.nm.gov/infrastructure/plans-specifications-estimates-pse-bureau/standards/

Page Intentionally left blank for future updates.

EARTHWORK

REFERENCE MATERIAL TYPE OF TEST(S)

REQUIRED

SAMPLING

POINT

MINIMUM SAMPLING/TESTING

FREQUENCY

CoRR 202

Unclassified Excavation, Embankment

Density, Moisture On-site 1 per 2000 CY. Min 95% compaction -5% + 2% opt moisture. Soils with PI 15 or greater must be opt moisture to +4% Proctor, Soils Classification Stockpile /

Roadway 1 per material type per 15,000 CY.

NMDOT 206 Foundations and Backfill Minor

Structures

Density, Moisture Structure See NMDOT table 906.1.2:2 Proctor, Soils Classification

Stockpile 1 per material type or when material appears to change.

CoRR 205 Subgrade Preparation

Density, Moisture

Roadway

1 per 2000 SQ. YD. 8” Loose lifts.

Proctor, Soils Classification 1 per material type or when material appears to change R- Value per CoRR 205.

NMDOT 210 Backfill Major Structures

Density, Moisture Structure See NMDOT table 906.1.2:2

Gradation, PI Stockpile

1 per 300 CY.

Proctor Soils Classification

1 per material type or when material appears to change.

NMDOT 608

Sidewalk, Drive Pads and Concrete Medians

(Foundations/Bed Course)

Density, Moisture Roadway 1 per 150 SQ. YD.

Proctor, Soils Classification

Foundation Material Location, Stockpile

1 per material type or when material appears to change.

NMDOT 609

Curb & Gutter

(Foundations/Bed Course)

Density, Moisture Roadway 1 per 500 LF or as site requires.

Proctor, Soils Classification Stockpile 1 per material type or when material appears to change.

NMDOT 623 &

Utility, Drop Inlet, Junction Box Backfill

Density, Moisture Structure See NMDOT table 906.1.2:2 Proctor, Soils Classification Material

Location 1 per material type or when material appears to change.

CoRR 204, 205 Drainage Structures & Culverts

Check lengths and flow line grades per roadway typical section, backfill with suitable materials

Project See remark 1.

Remarks:

1. 90% compaction average and optimum moisture +/- 2% based on minimum 2 tests per structure up to 36” diameter and 1 additional test for each additional 12” diameter structure. The minimum over pipe shall be 8”.

2. A minimum of one test per day’s production is required regardless of quantity of material placed.

AGGREGATE BASE (AB)

REQUIRED

SAMPLING

POINT

MINIMUM SAMPLING/TESTING FREQUENCY

CoRR 310

Base Coarse

(ABC)

Compaction In-Place 1 per 1000 tons, as site requires, max 6” compacted lifts, 96% of max density.

Proctor Stockpile 1 per material type or when material appears to change.

Washed Gradation Processed Material

1 per days production or 1000 tons whichever is less. Min 3 per project. See remark 4.

FF, LL, PI, SPG Processed Material

1 per 4000 tons. FF-Min 50% on untreated material, LL-max 25, PI-max 6.

Thickness Roadway 1 per 1000 tons or as site requires.

CoRR Division 200 Borrow & Pit

Run Material See remark 6 See Remark 6 See Remark 6.

CoRR 204 Roadway, Pipe Bedding, Trench Backfill

Compaction & Moisture Content

In-Place

One per 500’ or fraction thereof per lift; per lane (Roadway only). 95%MD below pavement 93%MD under unpaved areas.

CoRR DWG PS-01 Parking Lot Compaction & Moisture Content

In-Place One per 2500 ft² or fraction thereof per lift.

Subgrade 95%MD, Compacted fill or undisturbed earth 93%MD

NMDOT 910

Aggregate Index

(AI)

Gradation, -200 wash, PI, SE, Fine Agg Angularity, F&E, FF

Stockpile(s)

Combine 5 separate samples into 1 to perform testing. See remark 3 below.

CoRR 320 Asphalt Treated

Base (ATB) Asphalt Content, Gradation, Density, Surface tolerance, In-Place See remark 3 below.

CoRR 330 Cement/lime Treated Base

Gradation Roadway 1 per 300 ton, per street or site, 2 per day Density Roadway 1 per 500 tons, per street or site, 2 per day

95% Max Density Compressive Strength Roadway 1 per 300 tons or 1500 SY 1 per day. 850PSI minimum at 28 days (AVG 2 Samples)

Remarks:

1. The City Engineer or their representative reserves the right to modify sampling and testing requirements as needed to ensure quality of materials.

2. Material retained on or above #4 screen shall have at least 2 fracture faces when evaluated with AASHTO T-335, Max AI index of 35 when calculated with section 910 NMDOT “Aggregate Index”, Max LL of 25, Max PI 6 – Per NMDOT 910 “Aggregate Index” 2019 Standard Specifications for Highway and Bridge Construction (Current edition).

3. AC- 1 per 300 tons, Gradation- 1 per 300 tons, Density- 1 per 500 tons, ST- Continuous over surface. Section 320 table 320.3.6.2.1:2 & 320.3.6.2.1:1- acceptance testing tolerances.

4. Base and Sub-base shall meet NMDOT current edition for LA Abrasion, Soundness, Fractured Faces and Gradation based on type.

5. Check proper widths as per typical section including crown (Minimum of 0.015% per foot) Min Avg compaction of 90% minimum of three tests per mile of roadwork with optimum moisture contents not to exceed optimum plus or minus 5%.

6. 1 proctor per soil type, 1 density per 2000 CY, min 1 per mutually exclusive area and 3 tests per project. Gradation with 100% passing 2 ½” sieve for top six inches of subgrade, no more than 20% passing the 200 sieve, Max 35LL, no more than 9PI, R Value no less than 25, and 90% compaction average. Based on min 3 tests per mile of roadway unless to rocky for density which will then require gradation tests with at least 55% or more retained on #4 sieve per mile of roadway.

CEMENTITIOUS MIXTURES

REQUIRED

SAMPLING POINT MINIMUM SAMPLING/TESTING FREQUENCY

CoRR 500, 505 Portland Cement Concrete (Flatwork)

Compressive Strength

At discharge One set of 5 cylinders per 100CY and 1 additional set for quantities over 100CY daily.

Slump, Time, Temp, Air

At discharge One per set of cylinders. Air entrainment testing per project or as requested for quality.

CoRR 500, 505 Portland Cement Concrete

(Structures)

Compressive Strength

At discharge One set of 5 cylinders per structure per 50 cubic yards or fraction thereof.

Slump, Time, Temp, Air

At discharge One per set of cylinders. Air entrainment testing per project or as requested for quality.

CoRR 515

Controlled Low

Strength Material

(CLSM)

Compressive Strength

At discharge One set of three cylinders in the first 100CY

Flow At discharge One per set of cylinders.

Phenolphthalein Any point of load One test per placement

CoRR 530 Grout Compressive

Strength At discharge One set of four prisms.

Slump, Time & Temperature

At discharge One per set of prisms.

CoRR 525 Mortar Compressive Strength

At batch site One set of 6 cubes. Min 1800 PSI at 28 Days.

CoRR 535 Shotcrete Compressive Strength

At discharge One panel per 50 cubic yards, nozzle man and/or shift. (Whichever is greater)

CoRR 540 Soil Cement Compaction, Finish Placement 95% Compaction ASTM D1557. Finish +/- 0.1ft along CL & 0.5ft along right angles to CL

Remarks:

1. Time in mixer is 90 minutes max; Allowable maximum concrete temperature is 90 degrees Fahrenheit. Mixing time shall not exceed 60 minutes when concrete temp is 80°F or above for bridge, decks, approach slabs or when concrete temp is above 85°F for all other concrete. If transported in non-agitator trucks max mixing time is 45 minutes when concrete temp is lower than 80°F 30 minutes for concrete with a temp over 80°F.

2. Shotcrete test panel forms should be wood or steel and a minimum of 24"x24"x4", generally shot vertically.

3. Flowable fill will be tested using 15LB T-post fence driver to drive #6 bar with flat end into material 24hrs after placement.

Contractor shall remove and replace material if fewer than 6 or more than 25 blows are required to drive rebar 12 inches into fill.

4. CoRR may request field cured strength specimen if there is reason to question appropriate in-place curing of concrete.

5. For sidewalks verify sealant of control joint.

6. Any addition of water or admixture requires any previous testing on that load to be void and another sample shall be obtained, and the test specimens recast. See CoRR standard Spec 505.3.6.2 for further guidance.

7. Concrete shall not be placed on any surface 40°F or below and no concrete shall be placed on frozen ground. If placing concrete in air temps below 35°F, ensure enclosures or heating devices are used to protect concrete from cold temperatures. The concrete temp shall never fall below 45°F during placement and first 4 days after placing, temp shall not fall below 40°F during the next 4 days after initial 3-day curing period.

8. Min 4000psi for structural and 3000psi min for non-structural shotcrete at 28-days.

9. Contractor will be responsible for sampling and testing a minimum of 25% of the Manholes placed in the contract.

10. Structural concrete shall have a slump, unit weight, and air entrainment tested at the same frequency and load as the test specimen. All cement, fly ash, and concrete additives must be on the NMDOT approved products list.

11. Guardrail and Anchors must meet current edition of MUTCD, concrete must meet requirements for Class A Concrete.

Asphalt Pavement (WMA / HMA Asphalt) REFERENCE Material Required Test(s) Sampling Point Min Sampling / Testing Frequency

See Note 1 Below

WMA/HMA

Warm Mix Asphalt

Extraction, Gradation, FF, Gmm, and Gmb

Nuclear Density

Cores for correlation of density gauge

1 sample within the first 100 tons and 1 per 500 tons or days production thereafter, whichever is greater.

1 density per lift, per lane, every 500’, 1 density per mutually exclusive area regardless of tonnage. Min Avg compaction 93% for roadway, and 90% for parking lots.

Contractor quality control shall take 3 core specimens from 3 separate representative locations per 1000 tons for nuclear gauge correlation. *

Remarks The City will accept the constructed product based on the inspection and laboratory testing for conformance with the contract. This includes testing of samples of WMA/HMA taken from the roadway before compaction and on core samples.

Acceptance Criteria:

1. WMA shall conform to NMDOT 906 specifications and HMA shall conform to CoRR standard specification 405.

2. Air voids as determined from laboratory compacted specimen in accordance with AASHTO T166 and AASHTO T209.

3. Asphalt content as determined by the tank strap method or plant asphalt metering system defined in the contractor’s quality control plan (binder ignition oven calibration samples will not be required).

4. Final thickness of compacted material as measured from cores in accordance with ASTM D3549; AND

5. Density of the compacted roadbed as determined in accordance with AASHTO T310 standard method of test for in-place density and moisture content of soil-aggregate by nuclear methods (Shallow Depth). The contractor shall provide cores from three (3) separate representative locations for correlation with the nuclear densometer.

6. Asphalt deficient in oil content and/or density shall be cored 50’ maximum on both sides of the failed section when deemed necessary by the City of Rio Rancho. The results of the 2 cores shall be averaged with the previous test results.

7. Asphalt Cements and Additives shall be tested in accordance with departments current minimum standards for asphalt cement, lime, and liquid anti-strips. Items must be on the NMDOT approved products list. Agents and application rates determined by entity per ENG Standard practices. QA/QC plan in place before work commences.

*Additional correlation shall take place when material changes, when nuclear gauges/method change, when nuclear gauge is newly calibrated to ensure gauge correlation or as requested by the City Project Manager.

SURFACE TREATMENTS (MICROSURFACING, EMULSIONS, PATCHING)

REFERENCE Material Required Test(s) Sampling Point Min Sampling / Testing Frequency CoRR 480 Microsurfacing Gradation, Asphalt

Content Mixing Unit Discharge

Minimum 1 sample per 30 tons, 3000SY or per street/site.

CoRR 475

Crack Sealing

Visual inspection Depth, Width logs, Sealant Certificate of compliance

Placement / Cert of Compliance

Width and depth log 3 times per 1000LF Min 3 logs per project, Lengths of cracks must be documented. Letter of compliance from manufacturer, Sealant must be on NMDOT approved product list.

LGRF Chip Sealing Application Rate, Gradation, Temperature Project Meets requirements of NMDOT “Asphalt

Cements and Asphalt Emulsions” in current edition. See remark 4.

CoRR 425 Emulsified Asphalt Anionic

Production

AASHTO M 140.

Cationic AASHTO M 208.

High-Float Emulsions See Remarks Production See Remark 1 CoRR 475.

CoRR 470 Permanent Pothole Repair

See Remarks Placement Certificate of compliance for all materials.

Testing and inspection plan prior to work commencing.

NMDOT 209

Blading & Reshaping

Width and Grade Roadway /

Stockpile / Project Site

3 times per 1000LF.

Proctor 1 per soil type.

Compaction 1 per 1000LF per shoulder or 2 lane roadway, minimum 1 test per area/shoulder area. 95% Compaction

CoRR 450 Cold Milling Visual Inspection / Logs Project Visually inspect and document width and depth 3 times per 1000LF, minimum 3 logs per project.

Remarks:

1. See table 425.2.2:1 for testing requirements on High-Float Emulsions and application requirements.

2. The City of Rio Rancho City Engineer or their representative reserves the right to modify sampling, testing, and inspection requirements as needed to ensure quality of materials.

3. Application rate approximately 0.30 to .045 gallons per sq. yd. 20 to 28 pounds per square yard of ½” aggregate.

Gradations every 250 tons, minimum 3 per project. Temperature checks per department specifications. Inspection, testing, and quantities must be documents. The contractor shall develop an inspection and testing plan prior to work commencing.

PIPE CULVERTS

1. The contractor shall provide reinforced concrete pipe (RCP) with a bell and spigot design, a tongue and groove design, or a single offset joint design. All RCP shall be fabricated in a plant that is certified by the American Concrete Pipe Associate (ACPA). The contractor may use lift holes or lifting anchors to handle and place RCP. The contractor shall not use more than two (2) lift holes in the wall of each piece of pipe. The contractor shall place the lift at the top of the pipe in line with the centerline of the pipe and along the minor axis of the reinforcement. When using a single lift hole, the contractor shall place it at the balance point. When using two (2) lift holes, the contractor shall place them equidistant from the balance point. The lift holes shall not interfere with the load carrying capacity of the pipe, shall be neatly made, shall be straight, and may be either drilled or cast. After the contractor has placed the pipe and before beginning the backfill operations, the contractor shall fill the lift holes with:

• Non-shrink grout in accordance with section 521, “Non-Shrink Grout”

• Joint mortar, in accordance with section 570.2.2.2.2, “RCP Joint Material”

• Contractor shall place RCP in accordance with NMDOT Section 570.2.1.2.

2. Corrugated Metal Pipe (Spiral Rib Pipe, Double Wall, Smooth FLO, Concrete Lined) – Mill test reports from the pipe manufacturer. Visual inspection on-site after delivery to inspect for any damage received during transport to project, and to confirm there are no visual defects of the pipe. Confirm product meets project requirements. Contractor shall provide record heat numbers and supply chemical analysis for metal pipes.

3. Polypropylene (Corrugated and Tripple Wall) – When required for thermoplastic pipe, the contractor shall provide end sections located out of the clear zone that are either metal or HDPE with a minimum two percent (2%) carbon black in accordance with ASTM D 1248. The contractor shall provide certified test results showing that the material supplied meets specifications.

4. Thermoplastic High Density Polyethylene HDPE (Corrugated, Profile, and Solid) – When required for thermoplastic pipe, the contractor shall provide end sections located out of the clear zone that are either metal or HDPE with a minimum two percent (2%) carbon black in accordance with ASTM D 1248.

5. Thermoplastic PVC (Profile and Solid) – When required for thermoplastic pipe, the contractor shall provide end sections located out of the clear zone that are either metal or HDPE with a minimum two percent (2%) carbon black in accordance with ASTM D 1248.

General Notes:

1. Mandrel testing to demonstrate pipes ovality must be conducted before acceptance by the City.

2. All Culvert Pipes shall be inspected by tv camera and videoed then provided to the city's inspector for review before acceptance by the city. All costs for these requirements are considered as included in the culvert pipe items and no additional measurement or payment will be made, therefore. If the first inspection or subsequent inspections after that do not pass, the contractor will be required to perform additional inspections of the culvert pipe using a tv camera at the contractor's expense.

UTILITY ITEMS

REFERENCE MATERIAL UTILITY SAMPLING AND TESTING REQUIREMENTS

APWA 800 APWA 800 WATER Contractor shall follow all requirements of APWA Section 800.

APWA 900 APWA 900 WASTEWATER Contractor shall follow all requirements of APWA Section 900.

General Notes:

1. The contractor shall ensure that all marker balls are placed in accordance with the plans and/or as directed by the city’s project manager. Marker balls will be purchased and installed by the contractor/developer. Before construction the contractor shall provide a schedule with applicable marker ball information to the city. The marker ball identification number tags shall be included within the record drawings.

2. Molded fittings shall be tested in accordance with ASTM D3261. Manufacturer shall submit samples for each production lot for x-ray testing per project specifications to inspect for voids in molded fittings.

3. All joints must be watertight in accordance with NMDOT Section 570.2.2.1.2.

4. Thirty (30) days following installation and backfill of sewer lines, a deflection test using a hand-pulled mandrel shall be performed in the presence of the city's inspector. All costs for these requirements are considered as included in the sanitary sewer line pipe items and no additional measurement or payment will be made.

5. Air testing of sewer lines and hydrostatic testing of force mains shall be conducted in the presence of the city's inspector. All costs for these requirements are considered as included in the sanitary sewer line pipe items and no additional measurement or payment will be made.

6. All sewer service lines shall be inspected by tv camera and videoed then provided to the city's inspector for review before acceptance by the city. All costs for these requirements are considered as included in the sanitary sewer line pipe items and no additional measurement or payment will be made, therefore. If the first inspection or subsequent inspections after that do not pass, the contractor will be required to perform additional inspections of the sewer service lines using a tv camera at the contractor's expense.

7. The contractor is responsible for testing all force main lines, including but not limited to hydrostatic and bacteria testing, disinfecting, and flushing. All costs for these requirements are considered as included in the force main sanitary sewer line pipe items and no additional measurement or payment will be made.

8. Potability testing shall be collected and delivered by a certified third-party tester, approved by the city, to a testing laboratory certified by the New Mexico environment department - drinking water bureau. All costs for potability testing are considered as included in the water line pipe items, and no additional measurement or payment will be made.