Art. 704.06 Temporary Steel Plate Beam Guardrail
704.06 Basis of Payment. When the Contractor furnishes the barrier, this
work will be paid for at the contract unit price per foot (meter) for TEMPORARY CONCRETE BARRIER or RELOCATE TEMPORARY CONCRETE BARRIER. When the Department furnishes the barrier, this work will be paid for at the contract unit price per foot (meter) for TEMPORARY CONCRETE BARRIER, STATE OWNED; or RELOCATE TEMPORARY CONCRETE BARRIER, STATE OWNED. Anchor pins, except for the six anchor pins for the barrier unit at each end of an installation, will be paid for at the contract unit price per each for PINNING TEMPORARY CONCRETE BARRIER. Impact attenuators will be paid for separately. SECTION 705. TEMPORARY STEEL PLATE BEAM GUARDRAIL
705.01 Description. This work shall consist of furnishing, erecting,
maintaining, and removing steel plate beam guardrail, including posts and traffic barrier terminals.
705.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Steel Plate Beam Guardrail ............................................................... 1006.25
b.Wood Posts and Wood Blockouts ........................ 1007.01, 1007.02, 1007.06
c.Steel Posts, Blockouts, Restraints, and Wire Rope for Guardrail ...... 1006.23
d.Preservative Treatment ..................................................................... 1007.12
e.Hollow Structural Tubing ................................................................ 1006.27(b) CONSTRUCTION REQUIREMENTS
705.03 General. Construction of the temporary steel plate beam guardrail
and temporary traffic barrier terminals shall be according to the applicable requirements of Sections 630 and 631, respectively. After the guardrail and posts have been removed, the post holes shall be filled and tamped.
705.04 Method of Measurement. Temporary steel plate beam guardrail will
be measured for payment in feet (meters). The length measured will be the overall length of rail erected, measured along the top edge of the rail elements to the limits shown on the plans. The various types of temporary traffic barrier terminals will be measured for payment complete in place in units of each. The pay limit between the terminal and the adjacent guardrail shall be as shown on the plans.
705.05 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for TEMPORARY STEEL PLATE BEAM GUARDRAIL, of the type specified, and at the contract unit price per each for TEMPORARY TRAFFIC BARRIER TERMINAL, of the type specified. Impact Attenuators, Temporary Art. 706.05 SECTION 706. IMPACT ATTENUATORS, TEMPORARY
706.01 Description . This work shall consist of furnishing, installing,
maintaining, and removing temporary impact attenuators of the category and test level specified.
706.02 Materials . Materials shall be according to the impact attenuator
manufacturer’s specifications and the following: Item Article/Section
a.Fine Aggregate (Note 1) ..................................................................... 1003.01
b.Steel Posts, Structural Shapes, and Plates ........................................ 1006.04
c.Rail Elements, End Section Plates, and Splice Plates ........................ 1006.25
d.Bolts, Nuts, Washers and Hardware ................................................... 1006.25
e.Hollow Structural Tubing ................................................................. 1006.27(b)
f.Wood Posts and Wood Blockouts......................... 1007.01, 1007.02, 1007.06
g.Preservative Treatment ...................................................................... 1007.12
h.Packaged, Dry, Rapid Hardening Mortar or Concrete ............................. 1018 Note 1. Fine aggregate shall be FA 1 or FA 2, Class A quality. The sand shall be unbagged and shall have a maximum moisture content of five percent. CONSTRUCTION REQUIREMENTS
706.03 General . Impact attenuators shall meet the testing criteria contained
in either the National Cooperative Highway Research Program (NCHRP) Report 350 or MASH and shall be on the Department’s qualified product list.
706.04 Installation . Impact attenuators shall be installed according to the
manufacturer’s specifications and include all necessary transitions between the impact attenuator and the item to which it is attached. Regrading of slopes or approaches for the installation shall be as shown on the plans. Attenuator bases, when required by the manufacturer, shall be constructed on a prepared subgrade according to the manufacturer’s specifications. The surface of the base shall be slightly sloped or crowned to facilitate drainage. When water filled attenuators are used between November 1 and April 15, they shall contain anti-freeze according to the manufacturer’s recommendations.
706.05 Markings . Sand module impact attenuators shall be striped with
alternating reflectorized Type AA or Type AP fluorescent orange and reflectorized white horizontal, circumferential stripes. There shall be at least two of each stripe on each module. Other types of impact attenuators shall have a terminal marker applied to their nose and reflectors along their sides.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 645–646 of 1,217. View official source ↗