or humps. Ensure the surface is free of objects that might tear or puncture the geomembrane.
Do not use pegs or pins to hold membrane in place. Place cover material over membrane daily. Equipment may run—but not turn—directly on membrane when placing membrane or cover material.
Replace membrane damaged after installation because of construction activities, at no additional cost to the department. 4 When required by the engineer, prepare the subgrade with smooth drum roller passes
prior to membrane placement. 218.4.2.3 Trenches 1 For vertical installation in trenches, use backfill from the trench excavation and place to
prevent damage to the membrane. For backfill that will come in direct contact with the membrane, provide material that is approved by the engineer before use and is free of objects that might puncture or tear the membrane. Backfill the trench immediately after placing the membrane. Compact and finish backfill in accordance with Subsection 203.4.3, Embankment and Cut Areas with Moisture and Density Control.
218.5MEASUREMENT and PAYMENT
218.5.1 General 1 The engineer will measure Impermeable Plastic Membrane by the square yard [square
meter] of surface area, including vertical surfaces in trenches, with no allowance for overlaps.
The department will pay as follows: Pay Item
Pay Unit
Impermeable Plastic Membrane
SY [m2]
Measure to the Nearest 0.1 ft [0.5 m]
Pay to the Nearest SY [m2]
218.5.2 Referenced Sections for Direct Payment 1 When specified, the engineer will measure and pay for Crushed Base in accordance
with Section 301, Aggregate Subbase, Base Courses, and Bed Course Material.
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Rockfall Mesh
219.1DESCRIPTION
1 This
section describes the requirements for furnishing and installing anchors and rockfall mesh on finished backslopes.
219.2MATERIALS
1 Provide materials in accordance with the following:
Materials
Subsection
Anchors Hardware Lacing and Fasteners Non-shrink Grout Rockfall Mesh Wire Rope
822.3 822.6 822.2 822.4 822.1 822.5
Provide mesh in an industry-standard color.
219.3EQUIPMENT—Vacant
219.4CONSTRUCTION
219.4.1 General
Submittals: Submit the following to the engineer at least 10 working days before beginning work:
to be used, taken from normal stock of the manufacturer. Submit the samples with mill reports indicating tensile yield point, where applicable, and the tensile and punching tests of the rockfall mesh. Submit a color sample of the rockfall mesh to the engineer for final approval.
used on the project
for minimum strength of PVC and metallic coated gabion materials.
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Rockfall Mesh