Controlled Low-Strength Material, Backfill Art. 593.03 compressed air, water under pressure, or hand sweeping. All structural steel and bearings shall be washed with water under pressure. All foreign debris shall be removed from truss members. All foreign material accumulated in the interior of members shall be removed. Areas which have been washed shall be free of all accumulate sand, gravel, dirt, bird nests and excrete, and other foreign materials. Free standing water shall be removed upon completion of washing. The Contractor shall provide adequate protection against worker inhalation of dust from his/her washing operations. The Contractor shall exercise due caution while washing those portions of the structures that are adjacent to or above parking lots, buildings, sidewalks, roadways, and railroad tracks. Dirt and debris deposited on adjacent property or redeposited on the bridge shall be removed to the satisfaction of the Engineer. The Contractor shall obtain his/her own source of water.
592.05 Traffic Control. The road shall be kept open to traffic according to
Article 701 — 17(d)(4).
592.06 Method of Measurement. This work will be measured for payment in
units of each, at the locations specified.
592.07 Basis of Payment. This work will be paid for at the contract unit price
per each for BRIDGE WASHING at the location specified. SECTION 593. CONTROLLED LOW-STRENGTH MATERIAL, BACKFILL
593.01 Description. This work shall consist of furnishing and placing
controlled low-strength material (CLSM) as backfill for pipe culverts, storm sewers, structure excavation, or other excavations as specified.
593.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Controlled Low-Strength Material (CLSM) .............................................. 1019 CONSTRUCTION REQUIREMENTS
593.03 General. The mix shall not be placed on frozen ground, in standing
water, or during wet weather conditions. Mixing and placing shall begin only when the air temperature is at least 35 °F (2 °C) and rising. At the time of placement, the material temperature shall be at least 40 °F (5 °C). Mixing and placing shall stop when the air temperature is 40 °F (5 °C) and falling. The mix shall not be exposed to freezing temperatures or wet weather conditions during the first 24 hours after placement. Art. 593.04 Controlled Low-Strength Material, Backfill The mix may be subjected to loading upon approval by the Engineer or when a penetration of 1.5 in./blow (38 mm/blow) or less has been obtained with the Dynamic Cone Penetration (DCP) test.
593.04 Placement. The mix shall be placed directly from the chute into the
space to be filled. Other placement methods may be approved by the Engineer if the mix design is appropriate.
a.Structures. When backfilling against structures, the mix shall be placed in lifts to prevent damage by lateral pressures. Side slopes shall be stepped or serrated to prevent wedging action of the backfill against the structure. Each lift shall be allowed to harden prior to placing the next lift.
b.Pipes. When backfilling pipe culverts or storm sewers, the mix shall be distributed evenly on each side of the pipe and placed in lifts. The first lift shall be placed up to one-fourth the height of the pipe and allowed to settle. After settlement of the first lift, as determined by the Engineer, the second lift shall be placed up to one-half the height of the pipe and allowed to settle. After settlement of the second lift, as determined by the Engineer, the remainder of the trench shall be filled. When backfilling concrete pipes, the mix may be placed in a single lift.
593.05 Method of Measurement. This work will be measured for payment as
follows.
a.Contract Quantities. The requirements for the use of contract quantities shall be according to Article 202.07(a).
b.Measured Quantities. This work, when specified, will be measured for payment in place and the volume computed in cubic yards (cubic meters).
1.Structures. When CLSM is specified for backfilling structures, the computed volume will not exceed the volume computed for the excavation according to Article 502.12(b) with a deduction for the volume of the structure.
2.Pipe Culverts and Storm Sewers. When CLSM is specified for backfilling pipe culverts or storm sewers, the computed volume will not exceed the volume of the trench as computed by using the trench width specified in Sections 542 and 550 and the actual depth of the completed backfill above the top of the bedding materials, with a deduction for the volume of the pipe.
593.06 Basis of Payment. This work will be paid for at the contract unit price
per cubic yard (cubic meter) for CONTROLLED LOW-STRENGTH MATERIAL. Pipe Drains, Pipe Underdrains, and French Drains Art. 601.02
Division 600 — Incidental Construction
DRAINAGE RELATED ITEMS SECTION 601. PIPE DRAINS, PIPE UNDERDRAINS, AND FRENCH DRAINS
601.01 Description. This work shall consist of constructing pipe drains and
pipe underdrains of the required inside diameter, and constructing french drains consisting of trenches filled with aggregate. Pipe underdrains, pipe underdrains in backslopes, and pipe underdrains for structures shall be designated as follows. Type Description Pipe Underdrains, Type 1 A perforated pipe, encased in fabric, installed in a trench backfilled with fine aggregate. Pipe Underdrains, Type 2 A perforated pipe, without fabric, installed in a fabric lined trench backfilled with coarse aggregate. Pipe Underdrains, Type 3 A 4 in. (100 mm) pipe, without fabric but with narrower perforations, installed in a trench backfilled with a coarser fine aggregate. Pipe Underdrains (Special) A non-perforated pipe installed in a trench to outlet pipe underdrains, Type 1, 2, or 3. Backslope Drains, Type 1 A pipe underdrain, Type 1 installed in the backslope at a depth of 4 ft (1.2 m) or less. Backslope Drains, Type 2 A pipe underdrain, Type 1 installed in the backslope at a depth > 4 ft (1.2 m) but ≤ 8 ft (2.4 m). Backslope Drains, Type 3 A pipe underdrain, Type 1 installed in the backslope at a depth > 8 ft (2.4 m) but ≤ 12 ft (3.6 m). Pipe Underdrains for Structures A perforated pipe, without fabric, installed in a fabric lined trench backfilled with coarse or fine aggregate. Pipe Underdrains for Structures (Special) A non-perforated pipe installed in a trench to outlet pipe underdrains for structures.
601.02 Materials. Materials shall be according to the following.
a.Pipe Drains. Materials for pipe drains shall be according to the following. Item Article/Section
1.Corrugated Steel Pipe (Note 1) .................................................. 1006.01
2.Bituminous Coated Corrugated Steel Pipe (Note 1) ................... 1006.01
3.Corrugated Aluminum Alloy Pipe (Note 1) .................................. 1006.03
4.Concrete Sewer, Storm Drain, and Culvert Pipe, Class 3 ............... 1042
5.Polyvinyl Chloride (PVC) Pipe .................................................... 1040.03
6.Corrugated Polyvinyl Chloride (PVC) Pipe with a Smooth Interior ................................................................. 1040.03
7.Corrugated Polyethylene (PE) Pipe (Note 2) .............................. 1040.04
8.Corrugated Polyethylene (PE) Pipe with a Smooth Interior ........ 1040.04
9.Grout .......................................................................................... 1024.01
Referenced in this section
Sections that cite this one
Get an email when 593 changes
Illinois revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 538–540 of 1,217. View official source ↗