534NOISE AND PERIMETER WALLS

534-1 Description.

534-1.1 Precast Concrete Noise Walls:

Furnish and install concrete noise walls with piles, posts and panels constructed in accordance with Standard Plans, Index 534-200, unless the Plans indicate otherwise . Secure joints and connections in a structurally sound manner without openings in the system that would allow transmission of sound.

534-1.2 Perimeter Walls:

Furnish and install perimeter walls and foundation s in accordance with Standard Plans, Index 534-250 for either the precast concrete or the masonry option.

534-2 Materials.

Meet the following requirements: Portland Cement Concrete ................................ ..Section 346 Reinforcing Steel ................................ ................ Section 415 Welded Wire Reinforcement ( WWR) ................ Section 415 Concrete Masonry Units (CMU) ........................ ASTM C90 Mortar ................................ ............................... ASTM C270 Grout ................................ ................................ . ASTM C476 Horizontal Joint Reinforcing ................................ .................. ................................ .............. ASTM A951* or ASTM A580 Control Joints .......................... ACI 530.1 Article 2.5 A or B * Galvanized in accordance with ASTM A153

534-3 Requirements .

Construct concrete components in accordance with Section 400.

534-3.1 Precast Concrete Requirements:

Obtain precast concrete components from a plant that is currently on the Department’s Production Facility Listing. Producers seeking inclusion on the list must meet the requirements of Section 105. Do not accept products that are not permanently and clearly stamped on the tongue and groove portion of the panel and posted with the type, date cast, project number, and the manufacturer’s name or symbol by the Producer.

534-3.2 Masonry Requirements:

Conform to the requirements of Specification for Masonry Structures (TMS 602/ACI 530.1/ASCE6) , except as modified by the Plans or this Specification. Submit to the Engineer a certification that materials provided meet the requirements of this Section.

534-4 Shop Drawing Submittal.

Submit shop drawings for precast elements, when required, in accordance with Section 5, showing a plan and elevation with the following project specific information:

534-5 Construction.

Keep to minimum the clearing and grubbing; trim trees and shrubs only to the extent necessary to construct the walls, unless otherwise shown in the Plans. Keep right -of-way fence that is scheduled to be salvaged in place until completing the wall or as otherwise directed by the Engineer. Prior to beginning earthwork on the project, stake the wall location in the field and establish the finished graded surface elevations at the base of the walls. Use these elevations to develop the shop drawings. Protect the finish graded surface elevations established in the field for the duration of the proje ct, and do not adjust without prior approval of the Engineer. When constructing earthen berms to raise the base elevation of walls, construct the berms of fill material compacted to 95% of the maximum density as determined by AASHTO T99. After erecting the wall, return the disturbed area to preconstruction condition unless otherwise indicated in the Plans.

534-5.1 Precast Construction.

Shimming of wall panels between the pile collar and the bearing pads is permitted, up to a maximum of 1 -1/2 inches. Shim s must be either stainless steel or engineered copolymer plastic. Copolymer plastic shims must have a minimum compressive strength of 8,000 psi, without any fractures. Stacked shim plates must be bonded together with a compatible epoxy adhesive. Stacking o f shims is permitted as follows:

534-5.2 Concrete Masonry Construction.

Grout all cells that contain horizontal or vertical reinforcing bars.

534-6 Test Wall.

Erect a test wall section not less than 50 feet in length before starting general wall construction at the project site. The Engineer will use the erection of the test wall to verify the FY 2023-24 Return to Table of Contents Contractor’s methods and equipment are sufficient to produce a wall that meets the requirements of the Contract Documents. Build the test wall at a permanent wall location, as agreed to by the Engineer. If the test wall does not meet construction tolerances, remove and dispose of it at no expense to the Department. Include the cost of the test wall in the cost of the wall.

534-7 Repairs or Rejection.

For precast concrete components that have not been installed, evaluate cracks, spalls and other deficiencies in accordance with 450 -12. Repair deficiencies in accordance with 450 -13 or with the plant’s approved repair methods that are included as part of the Producer Quality Control (QC) Plan. Ensure that the original performance and durability of repaired components are maintained. Use materials for concrete repair that will meet or exceed the strength requirement for the class of concrete used . Materials meeting the requirements of Section 930 may be substituted for non -shrink grout when required by 450 -13. Precast concrete components are subject to rejection if they fail to conform to any of the requirements after repair. For precast component s that have been installed, the disposition of concrete cracks shall be in accordance with 400-21.

534-8 Method of Measurement.

The quantity to be paid for will be the plan quantity, in square feet, measured in place, completed and accepted, of the area b ounded by the top of the wall (including wall cap) and the bottom of the wall elements without deductions for openings from the beginning to end limits shown in the control drawings.

534-9 Basis of Payment.

Price and payment will be full compensation for all work specified in this Section, including but not limited to , furnishing all materials and labor required to construct the wall including caps and foundations . Payment will be made under: Item No. 534 - 72- Concrete Noise Wall - per square foot. Item No. 534 - 73- Perimeter Wall - per square foot. FY 2023-24 Return to Table of Contents SECTION 536 GUARDRAIL

536-1 Description.

Construct guardrail, including end treatments, transition connections to rigid barrier, and other associated hardware, as specified in the Plans and in accordance with the Standard Plans, Index 536 series . Remove existing guardrail as specified in the Plans.

536-2 Materials.

Use components for guardrail, including posts, offset blocks, ste el panels, panel components, bolts, foundations, barrier delineators, end delineators, rub rail, pipe rail, and approach terminals , in accordance with Section 967. Prior to installation , submit a list of the APL numbers of all approach terminals, barrier d elineators, and composite offset blocks to be used on the project.

536-3 Construction.

536-3.1 Height Tolerance: Install guardrail panels at the height shown in the Standard

Plans with a tolerance of 1 inch above and 1/2 inch below the nominal height spec ified. Where unavoidable surface irregularities, including but not limited to across shoulder gutters, inlets, and roadway surface break lines, are encountered, a tolerance of 3 inches above and 1 inch below the nominal height is permissible.

536-3.2 Station Location Tolerance: Where guardrail feature stationing is called out in

the Plans, the longitudinal stationing tolerance is plus or minus 3 feet and 1 -1/2 inch, unless otherwise restricted by field conditions as determined by the Engineer. For transition connections to rigid barrier, install the thrie -beam terminal connector at a 1/4 inch tolerance relative to the end of the rigid barrier as defined in the Plans and Standard Plan s.

536-3.3 Setting Posts: Set posts plumb and to the soil depth shown in the Standard Plan s.

Use the deep post option only where specified in the Plans. Place posts in excavations, backfill the space around the posts, and thoroughly tamp the backfilled soil. As an alternate method, use a post-driving machine meeting the appr oval of the Engineer. For guardrail post replacement, backfill and tamp the existing soil hole prior to setting the replacement post. If driving timber posts, either block out holes in the asphalt pavement during the asphalt paving operation or cut hol es through the asphalt mat prior to the post installation. Blocked out or cut holes in the asphalt pavement must be at least 50% larger than the cross - sectional area of the timber post. After driving the posts, patch the area of asphalt around each post with hot bituminous mixture in accordance with Section 339. If driving steel posts, drive the post directly through the asphalt mat. Fill asphalt depressions or cracks with hot bituminous mixture in a manner meeting the approval of the Engineer. For post locations where subsurface miscellaneous rock or other solid material is obstructing the post placement, remove such material as follows: