571-1 Description.
Furnish and install plastic erosion mat on areas as shown in the Plans. Conduct this work in conjunction with the performance turf work as specified in Section 570.
571-2 Materials.
Use a plastic erosion mat consisting of continuous or fused synthetic polymer fibers, which are entangled to form a three -dimensional matrix (netting or distorted netting may be included as part of the matrix). Ensure that the mat is capable of maintaining its shape throughout installation. Ensure that the mat is inert to chemicals encountered in a natural soil environment, and meets the requirement of Section 985 according to its application.
571-3 Installation of Plastic Erosion Mat.
Before installing the plastic erosion mat , submit to the Engineer certified test report s from the manufacturer certifying that the geotextile to be incorporated into this project meets the requirements of Section 985. Also, submit the manufacturer’s written instal lation instructions. Install a plastic erosion mat of uniform thickness, not less than 1/4 inch or more than 3/4 inch on the prepared soil surface in accordance with these Specifications, the manufacturer’s recommendations and in conformity with the lines , grades and dimensions as shown in the Plans. Ensure that all joints are shingle lapped such that the bottom of each section fits over the top of the section below to prevent uplift of the ends or edges by water flow. Overlap ends of adj acent rolls a mini mum of 3 feet. Overlap edges of adjacent rolls a minimum of 4 inches. Stake all edges at 3 to 5 feet intervals with staples as recommended by the manufacturer unless otherwise directed by the Engineer. Ensure that overlaps and anchor trenches are in confor mance with the Plans and the manufacturer’s installation recommendations. Ensure that after installation there are no protrusions, projections or exposures of the plastic erosion mat. Do not compact the installed plastic erosion mat with any type of equip ment employing a foot or grid. The Engineer will reject any material having defects, tears, punctures, flaws, deterioration or other damage before, during or after installation. Remove and replace all rejected plastic erosion mat at no additional expense to the Department. Fill all voids in the mat with soil meeting the requirements of Section 987. Establish performance turf meeting the requirements of Section 570.
571-4 Method of Measurement.
The quantity to be paid for will be the surface area of plastic erosion mat installed and accepted in square yards with no allowance for overlaps. Performance turf will be paid for separately in accordance with Section 570.
571-5 Basis of Payment.
Price and payment will be full compensation for all work specified in this Section, including furnishing, handling, placement of plastic erosion mat, all labor, equipment, and miscellaneous materials necessary for a complete and accepted installation. Payment will be made under: Item No. 571 - 1- Plastic Erosion Mat - per square yard. FY 2023-24 Return to Table of Contents SECTION 591 LANDSCAPE IRRIGATION SLEEVES
591-1 Description.
Furnish and install landscape sleeves for irrigation pipes and wires in accordance with the Plans and Standard Plans, Index 59 1-001.
591-2 Materials.
Meet the following requirements : Schedule 40 Polyvinyl Chloride (PVC) pipe ......Section 630
591-3 Installation Requirements.
591-3.1 General: Construct sleeve s along a straight alignment at the location and
depth shown in the Plans. Deviations in location or alignment may be made with prior approval of the Engineer. Provide a minimum of 24 inches between irrigation sleeve s and other utilities.
591-3.2 Backfill: Backfill in accordance with Section 120.
591-3.3 Coated Conductive Tape : Install coated conductive tape directly above
the sleeves with the repeated warning of “CAUTION WATER LINE BURIED BELOW,” unless otherwise shown in the Plans. 591.3.4 Pull String : Install a continuous No. 12 American Wire Gauge pull wire or polypropylene cord within the full length of all sleeves. Ensur e that a minimum of 36 inches of pull string is accessible at each sleeve termination. 591.3.5 Sleeve Terminations: Terminate the sleeves as shown in Standard Plans, Index 591. Fit sleeve caps at all terminations with a removable PVC threaded or slip cap . Install a survey marker cap fastened to a 18 inch by 24 inch long permanent marker made of No. 5 rebar, a steel survey stake, or 4 inch square concrete monument above the terminating end of all sleeve pairs. Ensure that the top of cap is flush to grade with message “IRRIGATION SLEEVE” permanently imprinted on the top of monument, and will not peel, fade, or deteriorate.
591-4 Method of Measurement.
The quantity to be paid will be the plan quantity of landscape irrigation sleeve in place and accepted. No separate payment will be made for contractor’s choice of installation method.
591-5 Basis of Payment.
Price and payment will be full compensation for all work specified in this Section. Payment will be made under: Item No. 591 - 1- Landscape Irrigation Sleeve - per foot. FY 2023-24 Return to Table of Contents