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Structures (500-599)

505DIAMOND GRINDING

NY · 2024 Standard SpecificationsBook pages 227230View official source ↗

503-5 02

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 thickness requirements as described in §502 -3.08, Plastic Thickness Determination. No additional payment will be made for Contractor -requested HES concrete mixes.

503-5.02 Constructing Longitudinal Joints. Include the cost of all labor, material, and equipment

necessary to perform the work in the unit price bid for Constructing Longitudinal Joints. Payment will be made under: Item No. Item Pay Unit 503.1010 PCC Foundation for Pavement, Class C Cubic Yard 503.1011 PCC Foundation for Pavement, Class F Cubic Yard 503.1012 PCC Foundation for Pavement, HES Concrete Cubic Yard 503.9110 Constructing Longitudinal Joints in Foundation Pavement Foot SECTION 504 VACANT SECTION 505 – DIAMOND GRINDING (New Section May, 2019)

505-1 DESCRIPTION. Diamond grind portland cement concrete (PCC) or asphalt surfaces in

accordance with the contract documents.

505-2 MATERIALS. Provide the Engineer with a list of equipment and their specifications at least 7

days before the planned start of diamond grinding. Maintain the equipment in proper working order. Immediately replace any out -of-round wheels. Do not use equipment that c auses raveling, aggregate fractures, or joint deterioration.

505-2.01 Production Diamond Grinding Equipment. For projects having grinding quantities over

3,000 yd2, use a self -propelled machine specifically designed for grinding that meets the following:

A.Equipped with 50 – 60 gang -mounted diamond saw blades per foot on a multi -blade arbor capable of producing a 3 foot wide, minimum, strip of ground surface.
B.Having blade spacers with a minimum thickness of 0.105 inches.
C.Equipped with a vacuum system capable of removing the grinding slurry from the surface, leaving the surface in a clean, near -dry condition.
D.Weighing a minimum of 35,000 pounds with the grinding head.
E.Having a minimum effective wheel base (distance between the transverse pivot points of the front wheel assembly and the profile/depth -control/ground drive wheels) of 12 feet.

505-2.02 Bump Grinding Equipment. Use equipment meeting §505 -2.01 Production Diamond

Grinding Equipment, except the equipment must weigh at least 17,000 pounds. This equipment may only be used for grinding quantities of 3,000 square yards, or less.

505-3 Construction Details.

505-3.01 General. Provide at least one 10 -foot straightedge and one 15 -foot straightedge to the Engineer

before paving begins. Diamond grind longitudinally, beginning and ending at lines normal to the

505-3 02

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 centerline, and in full travel lane width increments. Provide surface drainage by maintaining the proper cross slope and by blending adjacent passes. Grind such that there is no unground area between passes and the passes do not overlap by more than 1 inch. R emove unbroken fins 3/16” high by 4” long or larger at no additional cost to the Department. Continuously vacuum the slurry leaving a clean, near -dry condition. If roadside slurry discharge is not allowed, transfer the slurry into equipment capable of transporting it away without spills. Dispose of slurry in accordance with §107 -10 Managing Surplus Material and Waste . Do not allow slurry to enter occupied travel lanes, drainage structures, wetlands, streams, estuaries, or sensitive environmental resources, or areas where it will become a public nuisance.

505-3.02 Bump Grinding. Use production grinding equipment or bump grinding equipment. Test the

ground surface using a 15 foot straightedge laid longitudinally and a 10 foot straightedge laid transversely. Re -grind areas that exceed ¼ inch high in 15 feet longitudinally and/or ¼ inch high in 10 feet transversely. Grind such that there is no more than a 1/16 inch vertical differential between the adjacent sides of transverse joints and cracks.

505-3.03 Production Grinding – New PCC Pavement. Grind such that a minimum of 95% of the

surface of new PCC pavement is ground. Grind the transitions between the travel lanes and shoulders, auxiliary lanes, ramps, and/or other unground areas, such that proper surface drainage is achieved and there are no longitudinal ridges exceeding 3/16 inch. After grinding, collect, analyze, and report pavement ride quality data in accordance with Section 653 Pavement Ride Quality. Grind such that each Pavement Ride Quality (PRQ) lot meets Table 505 -1, New PCC Pavement Smoothness Requirements. TABLE 505 -1 NEW PCC PAVEMENT SMOOTHNESS REQUIREMENTS International Roughness Index (IRI) ≤ 70 inches per mile Localized Roughness (LR)1 ≤ 135 inches per mile Note 1: When determined using the ProVAL assurance module with a 25 foot baseline.

505-3.04 Production Grinding for Pavement Preservation. For pavements with posted speeds of 45

mph or greater, obtain a control profile in accordance with Section 653 Ride Quality before performing corrective work. Use the control profile to identify the maximum post -grind IRI for each PRQ lot as indicated in Table 505 -2 Pavement Preservation Smoothness Requirements . Re-grind as necessary to achieve the smoothness. Grind such that at least 95% of the surface is diamond ground and there is no more than a 1/16 inch vertical differential between the adjacent sides of transverse joints and cracks. Grind the transitions between the travel lanes and shoulders, auxiliary lanes, ramps, and/or other unground areas, such that proper surface drainage is achieved and there are no longitudinal ridges exceeding 3∕16 inch. For pavements with posted speeds less than 45 mph, the Engineer will test the ground surface using a 15 foot straightedge laid longitudinally and a 10 foot straightedge laid transversely. Re -grind areas exceeding ¼ inch high in 15 feet longitudinally and/ or ¼ inch high in 10 feet transversely. Do not test across longitudinal joints or outside the ground area. After grinding, re -profile the surface using the same equipment, methods, and PRQ lots used to develop the control profile, ensuring that the profile PRQ lot locations match the control PRQ lot locations.

505-4 01

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 TABLE 505 -2, PAVEMENT PRESERVATION SMOOTHNESS REQUIREMENTS Control Profile PRQ Lot IRI ≤ 180 > 180 Required Post -Grind IRI ≤ 90 ≤ 0.50 x (Control IRI) In addition to meeting the smoothness requirements of Table 505 -2, grind such that:

A.For pavements with posted speeds of 45 mph or more, the Localized Roughness (LR) will be less than or equal to 135 inches per mile when determined using the ProVAL Assurance Module with a 25 foot baseline.
B.The post -grind cross slope mirrors the pre -grind cross slope with no depressions or misalignment exceeding ¼ inch in 10 feet when measured with a 10 foot straightedge placed perpendicular to the centerline.
C.Wheelpath rutting is removed such that the texture is consistent across the lane. Determine a smoothness quality adjustment for each PRQ lot if that item is included in the contract documents.

505-4 Method of Measurement.

505-4.01 Bump Grinding. The quantity too be measured for payment will be in square yards of surface

bump ground. Only bump grinding associated with pavement restoration repairs will be measured for payment.

505-4.02 Production Grinding of New Pavement. The quantity to be measured for payment will be in

square yards of surface diamond ground.

505-4.03 Production Grinding for Pavement Preservation. The quantity to be measured for payment

will be the number of square yards of surface ground. No deductions will be made for isolated, unrepaired settlements.

505-4.04 Smoothness Quality Adjustment. The quantity to be measured will be the number of Quality

Units of Smoothness Quality Adjustment, if any, payable for each ground PRQ lot determined by the following: Quality Units (per PRQ lot) = (SAF – 1.00) x PRQ lot area The Smoothness Adjustment Factor (SAF) from Table 505 -3 Smoothness Adjustment Factors , is based on the percent improvement in IRI between the control profile and the post -grind profile. TABLE 505 -3, SMOOTHNESS ADJUSTMENT FACTORS IRI Improvement (%) Smoothness Adjustment Factor (SAF) ≥ 65 1.10 60 – 64 1.07 55 – 59 1.05 50 – 54 1.00

505-5 01

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 505-5 BASIS OF PAYMENT .

505-5.01 Bump Grinding . The unit bid price shall include the cost of all labor, materials, and

equipment necessary to complete the work.

505-5.02 Production Grinding of New Pavement. The unit bid price shall include the cost of all labor,

materials, and equipment necessary to complete the work.

505-5.03 Production Grinding for Pavement Preservation. The unit bid price shall include the cost of

all labor, materials, and equipment necessary to complete the work.

505-5.04 Smoothness Quality Adjustment. Quality Units for Smoothness Quality Adjustment are a

fixed price in the bid documents. Payment of Quality Adjustments will be made based on the Smoothness Adjustment Factor (SAF) multiplied by the fixed index price for Quality Adjustment Items listed in the contract documents for the quantity placed on the day the Quality Units represent. Payment will be made under: Item No. Item Pay Unit 505.0101 Bump Grinding - PCC Square Yard 505.0102 Bump Grinding - PCC with Slurry Removal Square Yard 505.0201 Production Grinding – New PCC Pavement Square Yard 505.0202 Production Grinding – New PCC Pavement with Slurry Removal Square Yard 505.0401 Production Grinding – Pavement Preservation Square Yard 505.0402 Production Grinding – Pavement Preservation with Slurry Removal Square Yard 505.0403 Smoothness Quality Adjustment Quality Unit SECTIONS 506 THRU 549 (VACANT)

551-1 01

NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 Section 550 STRUCTURES SECTION 551 - DEEP FOUNDATION INSTALLATION AND TESTING (Last Revised May, 2022)

551-1 Description

551-1.01 General. This work shall consist of furnishing and installing d eep foundations of the type and

size, designed to transfer load through shallow deposits to suitable bearing strata, at the locations indicated in the contract documents. The Contractor shall also perform load testing and/or integrity testing as indicated in the contract documents to verify the design assumptions and load -carrying capacity of the deep foundation elements. Timber piles are not covered under this specification.

551-1.02 Definitions.

A.Piles. Piles are vertical structural elements of a deep foundation installed to transfer structural loads into the underlying ground.
1.Steel H -Piles. A steel H -Pile is a hot rolled structural shape, where the shapes of the webs and the flanges are the same thickness, making a member that can be driven without twisting. Steel H - Piles are primarily used as an end bearing pile where the majority of the pile load is delivered to the material on which the tip rests.
2.Cast-In-Place Concrete Piles. A Cast-In-Place pile (CIP) is a pipe, or shell, driven into the ground primarily as a form to hold concrete. However, that casing serves as a means to transfer the loads from the casing surface to the surrounding soil by means of friction throughout the length of the pile (i.e. CIPs are friction piles). The distinction between a pipe and a shell is that the pipe can be driven on its own, while a shell is driven with a mandrel.
3.Furnishing Equipment for Driving Piles. Necessary equipment, including hammers, cushions, helmets, leads, followers, and methods for addressing obstructions (e.g. spuds or augers), for driving piles as shown in the contract documents.
4.Dynamic Pile Load Testing. Dynamic Pile Load Test (DPLT) uses measurements of strain and acceleration taken near the pile head as a pile is driven or restruck with a pile driving hammer. These dynamic measurements are used to determine the performance of the pile driving system, calculate pile installation stresses, assess pile integrity, and evaluate the nominal geotechnical resistance.
5.Splices. A pile splice joins two segments of a driven pile using either a weld or mechanical means. The piece of the pile in the ground is referred to as the bottom whereas the piece added onto the pile in the ground is referred to as the top. Splices are contingent items and shall apply only when the Engineer directs the Contractor to drive a pile more than 10 feet beyond the estimated length provided in the contract documents.
Source: New York Standard Specifications, 2024 Edition. Pages 227230 of 1,264.