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. Art. 211.04 Topsoil and Compost If additional topsoil is required to complete the contract to the lines, grades and the minimum thickness shown on the plans, the Contractor shall furnish any additional topsoil from areas outside the limits of the right-of-way. This additional topsoil obtained from outside the right-of-way shall be approved by the Engineer prior to its use. In lieu of furnishing additional topsoil from areas outside the limits of the right-of- way, the Contractor may request permission to obtain the additional topsoil from areas within the limits of the right-of-way other than those shown on the plans.
211.04 Placing Topsoil and Compost. Topsoil shall not be placed until the
area to be covered has been shaped, trimmed, and finished according to Section 212. All irregularities or depressions in the surface due to weathering or other causes shall be filled or smoothed out before the topsoil is placed. If the existing surface has become hardened or crusted, it shall be disked or raked or otherwise broken up so as to provide a bond with the lift of topsoil to be applied. When compost is specified, it shall be placed at the specified depth on top of the topsoil. The Engineer will verify that the proper topsoil and compost depths have been applied. After verification of proper depth, the Contractor shall completely incorporate the compost into the topsoil by disking or tilling.
211.05 Finishing. The surface of the topsoil or compost/topsoil blend shall be
free from clods, stones, sticks and debris and shall be according to the lines, grades and the minimum thickness shown on the plans. If required by the Engineer, one rolling of the entire surface shall be made.
211.06 Clearing Area and Disposal of Surplus Material. Upon completion
of the work, all areas shall be cleared of equipment, debris, and excess material. Surplus or waste material resulting from construction operations shall be disposed of according to Article 202.03.
211.07 Method of Measurement. This work will be measured for payment as
follows.
a.Contract Quantities. The requirements for the use of contract quantities shall conform to Article 202.07(a).
b.Measured Quantities. Material excavated in excess of that required for the contract will not be measured for payment. Topsoil excavation and placement shall be that material obtained from within the limits of the right-of-way and will be measured in cubic yards (cubic meters) in its original position. The volume will be computed by the method of average end areas. In no case will the width or depth used for the computations be greater than the dimensions shown on the plans unless such changes have been approved in writing by the Engineer. Topsoil excavation shall include the excavating, hauling, and stockpiling of the material in the locations approved by the Engineer. If the Contractor requests and the Engineer approves additional areas within the limits of the right-of-way for topsoil excavation other than shown on the plans, these Final Shaping, Trimming, and Finishing Art. 212.03 added quantities will be deducted from the item of borrow excavation, furnished excavation, or earth excavation. Topsoil furnish and place, and compost furnish and place shall be that material obtained from locations determined by the Contractor and will be measured in square yards (square meters). Excavation and embankment quantities for the roadway have been computed on the basis of cut and fill to the subgrade of the topsoil.
211.08 Basis of Payment. This work will be paid for at the contract unit price
per cubic yard (cubic meter) for TOPSOIL EXCAVATION AND PLACEMENT; per square yard (square meter) for TOPSOIL FURNISH AND PLACE, of the thickness specified; and per square yard (square meter) for COMPOST FURNISH AND PLACE, of the thickness specified. SECTION 212. FINAL SHAPING, TRIMMING, AND FINISHING
212.01 Description. This work shall consist of the final shaping, trimming,
and finishing of the roadway, the final finishing and cleaning up of the right-of-way, and completing the work for acceptance. This work is in addition to the requirements of Article 104.06. CONSTRUCTION REQUIREMENTS
212.02 Grading Sections. When the contract does not include a surface or
base course, the ditches shall be cleaned, all irregularities in the roadbed shall be smoothed out, depressions shall be filled, and the entire roadway shall be shaped, trimmed, and finished uniformly to the lines, grades, and cross sections shown on the plans, and the right-of-way cleaned up for final acceptance. The finished surface of the roadbed shall not vary from the lines, grades, and cross sections shown on the plans by more than 2 in. (50 mm).
212.03 Full Depth and Rigid Type Surface Sections. The roadway for
concrete pavement, full-depth hot mix asphalt, or pavement with concrete base course and any hot mix asphalt shall be shaped, trimmed, and finished as follows.
a.Sections Not Previously Graded. The ditches shall be cleaned, and the entire roadway shall be shaped, trimmed, and finished uniformly to the lines, grades, and cross sections shown on the plans, and the right-of-way cleaned up for final acceptance.
b.Sections Previously Graded. Where it is not necessary to secure material from the backslopes of cuts and ditches to complete the earthwork in the roadbed; or where no work is indicated on the plans which will interfere with such slopes; or where the Contractor’s operations do not disturb such slopes, no further work on the slopes will be required. If such slopes are disturbed by the Contractor’s operations, the Contractor shall trim and reshape them.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 114–116 of 1,217. View official source ↗