2111Test Rolling

2111.1DESCRIPTION

This Work consists of providing and operating Equipment to test roll Roadway embankments.

2111.2MATERIALS — BLANK

2111.3CONSTRUCTION REQUIREMENTS

A Equipment Provide test roller(s) meeting the following requirements: A.1 Test Roller – 30 (TR30) A.1.a Pneumatic Tires Two pneumatic tires spaced at least 6 feet apart, center to center. Tire sizes of 18 inches by 24 inches or 18 inches by 25 inches. Inflate tires to 95 pounds per square inch ±2 pounds per square inch. A.1.b Load Provide a mass load on each tire from 14.9 ton to 15.1 ton. A.2 Test Roller – 10 (TR10) A.2.a Pneumatic Tires Tire width maximum of 17 inches for the front axle tires, and a maximum of 11 inches for the rear axle tires. Inflate tires to within 2 psi of tire or vehicle manufacturer’s maximum psi rating; the minimum psi rating is 80 psi. A.2.b Load Provide a tandem truck with a minimum legal capacity of 52,000 pounds, and a minimum front axle capacity of 18,000 pounds. Load the truck such that the front axle is loaded to a minimum of 16,000 pounds, and the total weight of the truck and load is a minimum of 50,000 pounds. A.3 Deflection Measurement Provide a deflection recording device mounted over the center of the front axle and offset 12 inches from the outside edge of each tire. The deflection will be measured from the top of the unrolled embankment to the bottom of the rut at the time of rolling. The Engineer may allow alternate deflection recording devices.

B Testing Weigh the test roller at an independent certified Scale facility. Provide documentation to the Engineer. Protect Structures from damage that may be caused by the test roller. Repair Structures damaged by Contractor operations or negligence. Do not cross over a Bridge using TR30 test roller loaded to greater than 18,000 pounds (gross weight). Provide a blister of fill of at least 4 feet in depth when Test rolling with a loaded TR30 test roller over other Structures. Follow the Test rolling procedures in the Grading and Base Manual. Use TR10 when test roller is not designated in the Contract. Construct the embankment surface to within 4 inches of the design cross-section and profile in accordance with 2112, “Subgrade Preparation.” Perform Test rolling before tolerancing for base or non-stabilized full depth reclamation surface. Compact surface with a smooth-drum compactor immediately before Test rolling. Ensure the surface is free of marks, tracks, rutting, or ridged Material to prevent collection of false readings. Keep roller parallel to grade when testing. After Test rolling, repair and maintain the surface per 2112, “Subgrade Preparation” before placement of the next Layer. Test roll the entire length and width at the top of Layers designated in the Contract, from Shoulder point of intersection to Shoulder point of intersection or width of the subcut. Roll the first pass at the PI, roll subsequent passes with one wheel centered between the wheel paths of the previous pass, until the entire surface is covered at approximately a four foot interval between the center of each pass. Make two passes for non-granular Materials, and one pass over granular Materials. Granular Materials meet the requirements of Table 3149.2-1. Test roll at a speed from 2.5 miles per hour to 5 miles per hour. Engineer will observe testing from behind the roller, mark, and record failing areas. Engineer may require a Layer be retested if the next Layer is not placed within the same construction season. Correct areas that fail Test rolling. C Acceptance Meet the criteria listed in Table 2111.3-1 for TR30.

Table 2111.3-1 Acceptance Criteria – Maximum Deflection Granular & Non-Granular Materials (2106, “Excavation and Embankment – Compacted Volume Method”) Material Type Maximum Deflection Granular Materials not covered by Stabilizing Aggregate 3 inches All other Materials, including Granular Materials covered by Stabilizing Aggregate 2 inches

Meet the criteria listed in Table 2111.3-2 for TR10, and the criteria for 2106.3G.2, “Quality Compaction.” Table 2111.3-2 Acceptance Criteria – Maximum Deflection Material Type Maximum Deflection Granular and Non-granular Materials 0.6 inches Non-stabilized full-depth reclamation and Aggregate Base 0.4 inches D Testing Corrected Areas Retest corrected areas. Engineer may waive retesting on corrected areas that are less than two Road stations in length.

2111.4METHOD OF MEASUREMENT

Engineer will measure Test rolling by length for the entire width. Engineer will separately measure Test rolling on each Roadbed for Divided Highways. Combine Test rolling into one quantity, regardless of width or test roller used.

2111.5BASIS OF PAYMENT

The Department will pay for repairs to failing sections constructed under a previous C ontract in accordance with 1402, “Contract Revisions.” The Department will pay for Test rolling embankment constructed under a previous Contract. The Department will pay for Test rolling on the basis of the following schedule: Item No. Item Unit

2111.519 Test Rolling Road station