Art. 205.07 Granular Embankment, Special Special care shall be exercised in compacting embankments adjacent to structures and in sharp depressions. Where such areas are inaccessible to the compacting equipment being used, the material shall be placed in 8 in. (200 mm) horizontal lifts and uniformly compacted with suitable mechanical equipment.
205.07 Maintaining and Trimming Embankments. The Contractor shall
replace any portions of the embankment which have been damaged or displaced by reason of carelessness or negligence on the Contractor’s part. After the embankments have been constructed, their sides shall be trimmed to the proper slopes where required, and shall be maintained by the Contractor to the proper elevation and cross section until acceptance.
205.08 Method of Measurement. Embankment will not be measured for
payment. Mechanical compaction will not be measured for payment.
205.09 Basis of Payment. Embankment, permanent drainage features and
facilities, and any additive or water applied will not be paid for directly but shall be considered as included in the various items of excavation, and their construction shall be included in the unit prices for these items. Excavation and replacement of material declared unsuitable by the Engineer will be classified and paid for according to Article 109.04 SECTION 206. GRANULAR EMBANKMENT, SPECIAL
206.01 Description. This work shall consist of the construction of granular
embankment by placing and compacting gravel or crushed stone on an existing pavement or surface course.
206.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Coarse Aggregate (Note 1) ................................................................ 1004.04 Note 1. The aggregate shall have a bearing ratio of not less than 80. For crushed gravel, crushed stone, and crushed slag, the bearing ratio requirement shall not apply. The bearing ratio will be determined according to the Standard Methods adopted by the Department.
206.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Tamping Roller .................................................................................. 1101.01
b.Pneumatic-Tired Roller ...................................................................... 1101.01
c.Three-Wheel Roller (Note 1) .............................................................. 1101.01
d.Tandem Roller (Note 1) ..................................................................... 1101.01
e.Vibratory Machine (Note 2) Granular Embankment, Special Art. 206.08 Note 1. The three-wheel or tandem roller shall weigh from 6 to 10 ton (5.5 to 9 metric ton) and shall weigh not less than 200 lb/in. (35 N/mm) nor more than 325 lb/in. (57 N/mm) of width of the roller. Note 2. The vibratory machine shall meet the approval of the Engineer. CONSTRUCTION REQUIREMENTS
206.04 Placing and Compacting Aggregate. The Contractor shall submit to
the Engineer a sample of the aggregate to be used for granular embankment at least 15 days prior to starting construction. The sample so submitted will be tested by the Department for acceptance. The aggregate shall be placed and compacted according to Article 351.05(a) and (b), except that construction shall be alternated on each lane width so that at no time will there be a difference of more than 4 in. (100 mm) in elevation. Construction operations shall be carried on in such a manner that the elevation of adjacent traffic lanes shall be the same when work is suspended at nights and over weekends or holidays.
206.05 Construction of Earth Berm. Prior to allowing traffic on the newly
constructed lift, the adjacent earth berm shall be built flush with the top of the aggregate and the edges of the aggregate base compacted to the required density. The cost of constructing the earth berm in this manner will be considered as included in the contract unit price bid for earth excavation, borrow excavation, or furnished excavation.
206.06 Surface Treatment. Immediately following the final shaping and
compacting operation, calcium chloride shall be applied to the surface at the rate of 2 to 4 lb/sq yd (1 to 2 kg/sq m) according to Section 663. After the top lift has been completed, it shall be opened to two-way traffic and shall be maintained by the Contractor for traffic until the entire contract is completed and accepted. In no case shall the maintenance period be less than ten days.
206.07 Method of Measurement. This work will be measured for payment in
tons (metric tons) or cubic yards (cubic meters) according to Article 311.08. Aggregate required for maintenance will be measured for payment in tons (metric tons) or cubic yards (cubic meters) according to Article 311.08. Calcium chloride will be measured for payment according to Article 663.04.
206.08 Basis of Payment. This work will be paid for at the contract unit price
per ton (metric ton), or cubic yard (cubic meter) for GRANULAR EMBANKMENT, SPECIAL. Aggregate required for maintenance will be paid for at the contract unit price per ton (metric ton) or cubic yard (cubic meter) for GRANULAR EMBANKMENT, SPECIAL. Calcium chloride will be paid for according to Article 663.05. Art. 207.01 Porous Granular Embankment SECTION 207. POROUS GRANULAR EMBANKMENT
207.01 Description. This work shall consist of furnishing, transporting, and
placing porous granular material. For the purpose of this specification, the embankment may be above the original ground line, or it may be below the water elevation.
207.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Coarse Aggregate .............................................................................. 1004.05
b.Fine Aggregate .................................................................................. 1003.04 CONSTRUCTION REQUIREMENTS
207.03 General. The aggregate shall be placed in 6 in. (150 mm) lifts, loose
measurement, and compacted in a manner approved by the Engineer, except that if the desired results are being obtained, the compacted thickness of any lift may be increased to a maximum of 8 in. (200 mm).
207.04 Method of Measurement. This work will be measured for payment in
tons (metric tons) according to Article 311.08(b), or in cubic yards (cubic meters) compacted in place and the volume computed by the method of average end areas.
207.05 Basis of Payment. This work will be paid for at the contract unit price
per ton (metric ton) for POROUS GRANULAR EMBANKMENT, or at the contract unit price per cubic yard (cubic meter) for POROUS GRANULAR EMBANKMENT. SECTION 208. TRENCH BACKFILL
208.01 Description. This work shall consist of furnishing aggregate for
backfilling all trenches made in the subgrade of the proposed improvement, and all trenches where the inner edge of the trench is within 2 ft (600 mm) of the proposed edge of pavement, curb, gutter, curb and gutter, stabilized shoulder, or sidewalk. This work also includes the disposal of the surplus excavated material which is replaced by trench backfill. Such disposal shall be made according to Article 202.03.
208.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Fine Aggregate (Note 1) .................................................................... 1003.04
b.Coarse Aggregate (Note 2) ................................................................ 1004.05 Note 1. The fine aggregate shall be moist. Note 2. The coarse aggregate shall be wet.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 109–111 of 1,217. View official source ↗