Art. 209.05 Porous Granular Backfill purpose of filling the trench in excess of the maximum quantity specified shall be furnished and placed by the Contractor at his/her own expense.
209.05 Basis of Payment. This work will be paid for at the contract unit price
per cubic yard (cubic meter) for POROUS GRANULAR BACKFILL. SECTION 210. FABRIC FOR GROUND STABILIZATION
210.01 Description. This work shall consist of furnishing and installing
geotechnical fabric in subgrades or as embankment foundations.
210.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Geotextile Fabric ................................................................................ 1080.02
b.Coarse Aggregate (Note 1) ................................................................ 1004.04 Note 1. The coarse aggregate shall be that specified for granular embankment, special. CONSTRUCTION REQUIREMENTS
210.03 Installation Requirements. Fabric shall be delivered to the job site in
such a manner as to facilitate handling and incorporation into the work without damage. The fabric shall be stored out of direct sunlight. Prior to the installation of the fabric, the application surface shall be cleared of debris, sharp objects and trees. Tree stumps shall be cut to the level of the ground surface. If the stumps cannot be cut to the ground level, they shall be completely removed. In the case of subgrades, wheel tracks or ruts in excess of 2 in. (50 mm) in depth shall be graded smooth or otherwise filled with soil to provide a reasonably smooth surface. Fabric may be installed on the application surface either by hand or by mechanical methods, provided the surface is not rutted. Fabric of insufficient width or length to fully cover the specified area shall be lapped or sewn. The minimum laps for lap only areas are 2 ft (600 mm) and for sewn areas are 4 in. (100 mm). If sewn, the seam strength shall be equal to or exceed the minimum required grab strength of the fabric according to Article 1080.02.
210.04 Placement of Granular Blanket. The granular blanket shall be
constructed to the width and depth required on the plans. Granular embankment, special shall be used in conjunction with the geotechnical fabric. The material shall be back dumped on the fabric in a sequence of operations beginning at the outer edges of the treatment area with subsequent placement towards the middle. Placement of material on the fabric shall be accomplished by spreading dumped material off of previously placed material with a bulldozer blade or endloader, in such a manner as to prevent tearing or shoving of the cloth. Dumping of material directly Topsoil and Compost Art. 211.03 on the fabric will only be permitted to establish an initial working platform. No vehicles or construction equipment shall be allowed on the fabric prior to placement of the granular blanket. The granular material shall be placed to the full required thickness and compacted before any loaded trucks are allowed on the blanket. Fabric damaged during installation or subsequent placement of granular material shall be repaired or replaced. Torn fabric may be patched in place by cutting and placing a piece of the same fabric over the tear. The dimensions of the patch shall be at least 2 ft (600 mm) larger than the tear in each direction, and shall be weighted or otherwise secured to prevent the granular material from causing lap separation.
210.05 Method of Measurement. Geotechnical fabric will be measured for
payment in place and the area computed in square yards (square meters). Granular blanket will be measured for payment in tons (metric tons) or in cubic yards (cubic meters) according to Article 311.08.
210.06 Basis of Payment. Geotechnical fabric will be paid for at the contract
unit price per square yard (square meter) for GEOTECHNICAL FABRIC FOR GROUND STABILIZATION. The granular blanket will be paid for at the contract unit price per ton (metric ton) for GRANULAR EMBANKMENT, SPECIAL, or at the contract unit price per cubic yard (cubic meter) for GRANULAR EMBANKMENT, SPECIAL. SECTION 211. TOPSOIL AND COMPOST
211.01 Description. This work shall consist of furnishing, excavating, and
placing topsoil, special types of topsoil, or compost.
211.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Topsoil (Furnished from outside of the R.O.W.) ............................ 1081.05(a)
b.Compost ........................................................................................ 1081.05(b) CONSTRUCTION REQUIREMENTS
211.03 Furnishing and Excavating Topsoil. Topsoil shall be obtained from
within the limits of the right-of-way at the locations and to the depths designated on the plans or approved by the Engineer. This topsoil shall be stockpiled at locations approved by the Engineer. When special types of topsoil are specified, each type shall be handled separately and not allowed to mix with any other material. When special types of topsoil (Hydric, Prairie or Woodland) are specified, the seeds and plants within the excavated special topsoils are desirable to maintain. To keep these seeds and plants viable, the topsoil shall be excavated then placed as directed by the Engineer or as specified in the contract. If stockpiling cannot be avoided, special measures, such as watering the stockpile and planting a cover crop on the stockpile will be required as directed by the Engineer.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 113–114 of 1,217. View official source ↗