Earth and Rock Excavation Art. 202.03 SECTION 202. EARTH AND ROCK EXCAVATION
202.01 Description. This work shall consist of the excavation and
transportation of suitable and restricted-use excavated material to embankment locations throughout the limits of the contract, or the excavation, transportation, and disposal of excavated material. This work does not include excavation for structures or channel excavation. CONSTRUCTION REQUIREMENTS
202.02 Clearing, Tree Removal, and Protection of Existing Plant Material.
Prior to starting excavation operations in any area, all clearing, tree removal, and protection of existing plant material in that area shall be performed according to Section 201.
202.03 Removal and Disposal of Surplus, Unsuitable, and Organic
Materials. During excavation, pertinent materials will be designated by the Engineer as suitable, unsuitable, or restricted-use according to Article 1009.04. Suitable and restricted-use excavated materials shall not be wasted without permission of the Engineer. The Contractor shall dispose of all surplus, unsuitable, and organic materials in such a manner that public or private property will not be damaged or endangered. Restricted-use miscellaneous materials according to Article 1009.04 may be placed in fills or embankments according to Section 205. Broken concrete without protruding metal bars, bricks, rock, or stone may be used as riprap as approved by the Engineer. If restricted-use miscellaneous materials are used for fill in locations within the right-of-way but outside the construction limits, the Contractor shall specify to the Engineer, in writing, how the landscape restoration of the fill areas will be accomplished. Placement of fill in such areas shall not commence until the Contractor’s landscape restoration plan is approved by the Engineer. Aside from the materials listed above, all other construction and demolition debris or waste shall be disposed of in a licensed landfill, recycled, reused, or otherwise disposed of as allowed by State or Federal laws and regulations. When the Contractor chooses to dispose of uncontaminated soil at a clean construction and demolition debris (CCDD) facility or at an uncontaminated soil fill operation, it shall be the Contractor’s responsibility to have the pH of the material tested to ensure the value is between 6.25 and 9.0, inclusive. A copy of the pH test results shall be provided to the Engineer. A permit shall be obtained from IEPA and made available to the Engineer prior to open burning of organic materials (i.e., plant refuse resulting from pruning or removal of trees or shrubs) or other construction or demolition debris. Organic materials originating within the right-of-way limits may be chipped or shredded and placed as mulch around landscape plantings within the right-of-way when approved by the Engineer. Chipped or shredded material to be placed as mulch shall not exceed a depth of 6 in. (150 mm). When the Contractor proposes to dispose of surplus excavated material off the right-of-way, the Contractor shall obtain and file with the Engineer permission in Art. 202.03 Earth and Rock Excavation writing, from the property owner, for the use of the property for this purpose. The approval of the proposed disposal site shall be according to Article 107.22. Any such disposal shall not create an unsightly or objectionable appearance or detract from the natural topographic features, nor be placed at an elevation higher than that of the adjacent roadway without permission from the Engineer. Unsuitable material, including excavated material from sewer trenches or other underground construction, shall be excavated or removed and replaced with material as shown on the plans or directed by the Engineer. Unsuitable material shall not be used in embankments. Unsuitable material shall be placed as directed by the Engineer within the right-of-way or disposed of outside of the right-of-way.
202.04 Classification. Excavation material will be classified by the Engineer
during excavation. All excavation will be classified as earth excavation, rock excavation, excavation for structures, channel excavation, unsuitable material excavation, topsoil excavation, and rock excavation in channel. Rock excavation shall consist of the excavation from the roadway of boulders 1/2 cu yd (0.5 cu m) in volume or greater and all rock in ledges, bedded deposits and conglomerate deposits exhibiting the physical characteristics and difficulty of rock removal. Rock shall be excavated to a minimum of 3 in. (75 mm) below the subgrade of the proposed pavement and backfilled with subbase granular material, Type A or Type B, as directed by the Engineer, to the elevations shown on the plans. The surface of the rock excavation shall be free from projecting points, ribs, crevices or undrained pockets. The method of rock removal shall be the option of the Contractor. However, excessive blasting or overshooting will not be permitted.
202.05 Drainage and Drying. The excavation shall be maintained so that
positive drainage is provided at all times. Ditches and waterways shall be constructed and maintained to the lines, grades, and cross sections shown on the plans. The Contractor shall also excavate a ditch at the toe of slope for fills and at the top of slope for cuts at locations designated by the Engineer at the earliest opportunity during construction to control runoff from the embankment or cut section. Material excavated from ditches at the top of slope of cuts shall be placed in a windrow between the ditch and top of slope. If during the prosecution of the work, it is necessary to interrupt existing sewer or other drainage facilities to complete contract requirements, temporary drainage facilities shall be provided until the permanent drainage work has been completed. The Contractor shall preserve and protect all existing sewer and drainage facilities within the limits of the contract. Suitable and restricted-use soils that are unstable according to Article 1009.04 shall be rendered stable at the excavation, embankment, subgrade, or fill site through disking and drying. The Contractor will be permitted the use of an approved additive to affect quicker drying time. If these materials are declared unsuitable by the Engineer according to Article 1009.04, they shall be disposed of according to
Article 202 — 03.
Earth and Rock Excavation Art. 202.07
202.06 Excavation for Base Course Widening and Hot-Mix Asphalt
Shoulders for Pavement Resurfacing. The excavated material for the construction of base course widening and hot-mix asphalt (HMA) shoulders when the existing pavement is not to be widened shall be used to backfill the remaining portion of the widening trench after the widening has been constructed and to grade and reshape the shoulders to the new gradeline shown on the plans after the pavement resurfacing has been completed. Backfill shall be completed within 24 hours. The excavated material shall be deposited on the shoulders in such a manner that it will not interfere with drainage or the construction of the base course widening or shoulders and the pavement resurfacing until it can be bladed into final position. Any surplus excavation not needed for the shoulder reshaping or any unsuitable material shall be disposed of according to Article 202.03. If sufficient material is not obtained from the excavation for the widening or HMA shoulder to complete the shoulder grading, additional material shall be obtained from an outside source meeting the requirements of Article 204.02.
202.07 Method of Measurement. This work will be measured for payment as
follows.
a.Contract Quantities. When the project is constructed essentially to the lines, grades, or dimensions shown on the plans, and the Contractor and the Engineer have agreed in writing that the plan quantities are accurate, no further measurement will be required and payment will be made for the quantities shown in the contract for the various items involved, except that if errors are discovered after work has been started, appropriate adjustments will be made. When the plans or work have been altered, or when disagreement exists between the Contractor and the Engineer as to the accuracy of the plan quantities, either party shall, before any work is started which would affect the measurement, have the right to request in writing and thereby cause the quantities involved to be measured. When plan quantities are revised by the issuance of revised plan sheets that are made part of the contract, and the Contractor and the Engineer have agreed in writing that the revised quantities are accurate, no further measurement will be required and payment will be made for the revised quantities shown.
b.Measured Quantities. Earth excavation and rock excavation will be measured in their original positions, and the volumes in cubic yards (cubic meters) computed by the method of average end areas, or by using topographic surveys in conjunction with computations from digital terrain models. The volume of any unsuitable material removed will be measured for payment in cubic yards (cubic meters). In rock excavation, the Contractor shall strip ledge rock of overburden so that necessary cross sections for measurement may be taken. Vertical measurements for determining end areas shall extend from the surface of the rock to an elevation not more than 6 in. (150 mm) below the subgrade of the proposed pavement, as shown on the plans, or to the bottom of the rock where that point is above the bottom of subgrade of the proposed pavement. Art. 202.07 Earth and Rock Excavation Horizontal measurements for determining end areas shall extend not more than 6 in. (150 mm) beyond the slope lines fixed by the Engineer for the work. Boulders and rocks 1/2 cu yd (0.5 cu m) or more in volume will be measured individually and the volume computed from average dimensions taken in three directions. Subbase granular material used for replacement will be measured in tons (metric tons) or in cubic yards (cubic meters) according to Article 311.08. Subbase granular material used for replacement of rock excavation more than 6 in. (150 mm) below the subgrade of the proposed pavement will not be measured for payment. Earth moved more than once due to either stage construction or by written authorization of the Engineer will be measured for payment each time it is moved. Earthwork required for the construction of base course widening for pavement resurfacing will be measured for payment to the neat lines as shown on the plans and the volume computed in cubic yards (cubic meters). Earthwork required for the construction of HMA shoulders for pavement resurfacing will be measured for payment in units of 100 ft (30 m) along each edge of the pavement.
202.08 Basis of Payment. Earth and rock excavation will be paid for at the
contract unit prices per cubic yard (cubic meter) for EARTH EXCAVATION and ROCK EXCAVATION, respectively, which prices shall include other items of work included under the general heading of Earthwork for which no payment item is included in the contract. Removal and disposal of unsuitable material will be paid for at the contract unit price per cubic yard (cubic meter) for REMOVAL AND DISPOSAL OF UNSUITABLE MATERIAL. Subbase granular material will be paid for according to Article 311.09. When the contract does not contain a pay item for removal and disposal of unsuitable material and this item is required, it will be paid for according to
Article 109 — 04.
When the contract does not contain pay items for rock excavation or subbase granular material, and these items are required, they will be paid for according to
Article 109 — 04.
Earthwork required for the construction of base course widening for pavement resurfacing will be paid for at the contract unit price per cubic yard (cubic meter) for EARTH EXCAVATION (WIDENING). Earthwork required for the construction of HMA shoulders for pavement resurfacing will be paid for at the contract unit price per unit for EXCAVATING AND GRADING EXISTING SHOULDER. Channel Excavation Art. 203.06 Additional work required to reshape the shoulders to the new grade line for pavement resurfacing will be paid for according to Article 109.04. Temporary drainage facilities required during the course of construction will be paid for according to Article 109.04 unless otherwise provided for in the contract. SECTION 203. CHANNEL EXCAVATION
203.01 Description. Channel excavation shall consist of the removal and
satisfactory disposal of all materials encountered in the construction of new stream channels and in widening, deepening, or straightening existing stream channels. CONSTRUCTION REQUIREMENTS
203.02 Classification. Excavation in channel will be classified as channel
excavation and rock excavation in channel, according to Article 202.04.
203.03 Clearing, Tree Removal, and Protection of Existing Plant Material.
Prior to starting excavation operations, all clearing, tree removal, and protection of existing plant material shall be performed according to Section 201.
203.04 Excavation. The Contractor shall notify the Engineer, at least three
days in advance of starting excavation operations, to permit the completion of accurate measurements for volume determinations. Any material excavated before such measurements have been taken will not be paid for. Channels shall be excavated according to the lines, grades, and cross sections shown on the plans; there shall be no deviation from the dimensions shown without the written consent of the Engineer. Excavated materials shall be disposed of as shown on the plans or as directed by the Engineer. Where piles are to be driven as a part of the permanent improvement, any channel excavation at the location of such piles shall be completed to the final elevation before the piles are driven.
203.05 Method of Measurement. Channel excavation and rock excavation in
channel will be measured for payment according to Article 202.07.
203.06 Basis of Payment. Channel excavation will be paid for at the contract
unit prices per cubic yard (cubic meter) for CHANNEL EXCAVATION and ROCK EXCAVATION IN CHANNEL. When the contract does not contain a unit price for rock excavation in channel, and such excavation is required, it will be paid for according to Article 109.04.
Referenced in this section
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 96–100 of 1,217. View official source ↗