Pay Item
Pay Unit
Measure to the Nearest
Pay to the Nearest
Reinforced Conc Slope Paving Slope Paving Repair/ Modification
SY [m2]
0.1 ft [0.05 m]
SY [m2]
SY [m2]
0.1 ft [0.05 m]
SY [m2]
508.5.2 Referenced Sections for Direct Payment 1 When specified, the engineer will measure and pay for flowable backfill in accordance
with Section 206, Excavation and Backfill for Culverts.
455
Vacant
456
Vacant
457
Riprap and Gabion Erosion Protection
511.1DESCRIPTION
1 This section describes the requirements for constructing bank or ditch lining or slope
protection.
511.2MATERIALS
1 Provide materials in accordance with the following:
Material
Subsection
Aggregate for Riprap Filter Aggregate for Riprap Geotextile Gabions
803 803 805 811.6
511.3EQUIPMENT—Vacant
511.4CONSTRUCTION
511.4.1 General 1 Submit aggregate sample in accordance with the MTM at least 14 calendar days before
the use. 511.4.2 Preparation of Slopes 1 Complete excavation for and installation of riprap or gabions in dry conditions by using
a non-earthen cofferdam throughout the length of the riprap or gabion sections. Cofferdam installations need to be approved by the engineer prior to excavation for riprap or gabions. 2 Shape slopes to allow for the full thickness of riprap or gabions and any bedding or filter
aggregate. Slope material no steeper than its natural angle of repose. When possible, excavate the slope from undisturbed material; when not, shape and compact the underlying material to at least 90.0 percent of maximum density at optimum moisture content, in accordance with Subsection 203.4.3, Embankment and Cut Areas with Moisture and Density Control.
458
Riprap and Gabion Erosion Protection