Pavement Marking Equipment Art. 1105.01 Aluminum parts shall not be in contact with concrete. The steel pipe shall be clean, smooth, and shall have watertight connections. The steel pipe shall have sufficient thickness and weight to resist buoyancy when the pipe is not filled with concrete. The steel pipe shall be supported in a manner to allow for it to be raised or lowered rapidly. To start underwater concrete placement and prevent mixing of water and concrete, the discharge end of the steel pipe shall have a steel or wood flap gate with gaskets, or a wood plug which may float to the surface. The wood plug may be beveled to hold it in place, or it may be tied to the steel pipe to keep it in place. The wood plug shall be covered with a sheet of plastic or shall have a gasket. A traveling plug will not be permitted.
1103.19 Mechanical Side Tie Bar Inserter. The mechanical side tie bar
inserter shall be self-contained and supported on the formless paver with the ability to move independently from the formless paver. The insertion apparatus shall vibrate within a frequency of 2000 to 6000 vpm. A vibrating reed tachometer, hand type, shall be provided according to Article 1103.12.
1103.20 Mechanical Dowel Bar Inserter. The mechanical dowel bar inserter
(DBI) shall be self-contained and supported on the formless paver with the ability to move separately from the paver. The DBI shall be equipped with insertion forks along with any other devices necessary for finishing the concrete the full width of the pavement. The insertion forks shall have the ability to vibrate at a minimum frequency of 3,000 VPM. SECTION 1104. RESERVED SECTION 1105. PAVEMENT MARKING EQUIPMENT
1105.01 General. Pavement marking equipment shall include at least one
operator who shall be a technical expert in equipment operations and application techniques. All guns shall be in full view of the operator at all times.
a.Truck Mounted. Truck mounted equipment shall be capable of spraying both yellow and white markings according to the manufacturer’s recommended proportions and be mounted on a truck of sufficient size and stability with an adequate power source to produce lines of uniform dimensions and prevent application failure. The equipment shall have a metering device to register the accumulated installed quantities for each gun, each day. The application equipment shall be capable of automatically placing intermittent and continuous lines of the various widths and colors of pavement marking lines specified.
b.Hand Operated. Hand operated equipment shall meet the recommendations of the pavement marking material manufacturer. The Engineer may permit the use of a hand operated machine for those locations where only a limited quantity of lane and edge lining is required. Letters, Art. 1105.01 Pavement Marking Equipment symbols, and lines other than edge lines may be placed with a hand operated machine. For the purpose of these specifications, "hand operated" equipment shall also include any riding units not meeting the minimum material capacity of "truck mounted" equipment as stated in Articles 1105.02 through 1105.06.
1105.02 Grooving. Equipment for grooving of recessed pavement marking
shall be according to the following.
a.Preformed Plastic Pavement Marking Installations. The grooving equipment shall have a free-floating saw blade cutting head equipped with gang- stacked diamond saw blades. The diamond saw blades shall be of uniform wear and shall produce a smooth textured surface. Any ridges in the groove shall have a maximum height of 15 mils (0.38 mm).
b.Paint, Epoxy, Polyurea, Modified Urethane, Preformed Thermoplastic, and Thermoplastic Pavement Marking Installations. The grooving equipment shall be equipped with either a free-floating saw blade cutting head or a free- floating grinder cutting head configuration with diamond or carbide tipped cutters and shall produce an irregular textured surface.
1105.03 Thermoplastic. Equipment for thermoplastic pavement marking shall
be according to Article 1105.01 and the following. The thermoplastic material shall be applied to the pavement by an extrusion method where one side of the shaping-die is the pavement or by means of an extended ribbon. If used, the shaping-die should be equal to the width of the line specified in the plans. The method used shall produce sharp edges on both sides and square ends on each stripe. The use of pans, aprons, or similar devices to prevent die overruns will not be permitted. The Contractor shall provide an accurate temperature measuring device capable of measuring the pavement temperature prior to installation of the thermoplastic and the temperature of the molten thermoplastic material immediately after it is applied. Truck mounted equipment shall be capable of maintaining a continuous operating speed of at least 3 mph (5 km/hr). The truck shall be capable of carrying a minimum of 4,000 lb (1,800 kg) of molten thermoplastic. The mounting shall allow the extrusion equipment to accurately follow road irregularities and produce lines of uniform dimensions. Hand operated equipment shall be capable of containing a minimum of 125 lb (55 kg) of molten material.
1105.04 Epoxy. Equipment for epoxy pavement marking shall be according to
Article 1105 — 01 and the following.
The epoxy pavement marking compounds shall be applied through machinery designed to precisely meter the two components in the ratio of 2:1. This equipment shall produce the required amount of heat at the mixing head and gun tip and maintain those temperatures within the tolerances specified. This machinery shall Pavement Marking Equipment Art. 1105.05 also have as an integral part of the gun carriage, a high pressure air spray capable of cleaning the pavement immediately prior to the marking application. Truck mounted equipment shall have at least two epoxy tanks each of 110 gal (415 L) minimum capacity and be equipped with hydraulic systems and agitators. It shall be capable of placing stripes on the left and right sides and placing two lines on a three-line system simultaneously with either line in a solid or intermittent pattern, in yellow or white.
1105.05 Polyurea. Equipment for polyurea pavement marking shall be
according to Article 1105.01 and the following. The polyurea pavement marking compounds shall be applied through equipment specifically designed to apply two-component liquid materials, glass beads and/or reflective elements in a continuous and skip-line pattern. The two-component liquid materials shall be applied after being accurately metered and then mixed with a static mix tube or airless impingement mixing guns. The static mixing tube or impingement mixing guns shall accommodate plural component material systems that have a volumetric ratio of 2 to 1 or 3 to 1. This equipment shall produce the required amount of heat at the mixing head and gun tip and maintain those temperatures within the tolerances specified. The guns shall have the capacity to deliver materials from approximately 1.5 to 3 gal/min (5.7 to 11.4 L/min) to compensate for a typical range of application speeds of 6 to 8 mph (10 to 13 km/h). The accessories such as spray tip, mix chamber, and rod diameter shall be selected according to the manufacturer’s specifications to achieve proper mixing and an acceptable spray pattern. The application equipment shall be maneuverable to the extent that straight lines can be followed and normal curves can be made in a true arc. The equipment shall also have as an integral part of the gun carriage, a high pressure air spray capable of cleaning the pavement immediately prior to making application. The Contractor shall provide an accurate temperature-measuring device(s) that shall be capable of measuring the pavement temperature prior to application of the material, the material temperature at the gun tip, and the material temperature prior to mixing. Truck mounted equipment shall have at least two polyurea tanks each of 110 gal (415 L) minimum capacity and be equipped with hydraulic systems and agitators. It shall be capable of placing stripes on the left and right sides and placing two lines on a three-line system simultaneously with either line in a solid or intermittent pattern, in yellow or white. The mobile applicator shall include the following features.
a.Material Reservoirs. The applicator shall provide individual material reservoirs, or space for the storage of Part A and Part B of the resin composition.
b.Heating Equipment. The applicator shall be equipped with heating equipment of sufficient capacity to maintain the individual resin components at the manufacturer’s recommended temperature of ±5 °F (±2.8 °C) for spray application.
c.Dispensing Equipment. The applicator shall be equipped with glass bead and/or reflective element dispensing equipment. The applicator shall be Art. 1105.05 Work Zone Traffic Control Devices capable of applying the glass beads and/or reflective elements at a rate and combination indicated by the manufacturer.
d.Volumetric Usage. The applicator shall be equipped with metering devices or pressure gauges on the proportioning pumps as well as stroke counters to monitor volumetric usage. Metering devices or pressure gauges and stroke counters shall be visible to the Engineer.
e.Pavement Marking Placement. The applicator shall be equipped with all the necessary spray equipment, mixers, compressors, and other appurtenances to allow for the placement of reflectorized pavement markings in a simultaneous sequence of operations.
1105.06 Modified Urethane. Equipment for modified urethane pavement
marking shall be according to Article 1105.01 and the following. The modified urethane pavement marking compounds shall be applied through equipment specifically designed to precisely meter the two components in the ratio of 2:1 and approved by the manufacturer of the material. The equipment shall produce the required amount of heat at the mixing head and gun tip and maintain those temperatures within the tolerances specified. The equipment shall also have as an integral part of the gun carriage, a high pressure air spray capable of cleaning the pavement immediately prior to the marking application. Truck mounted equipment shall have at least two urethane tanks each of 110 gal (415 L) minimum capacity and shall be equipped with hydraulic systems. It shall be capable of placing stripes on the left and right sides and placing two lines on a three- line system simultaneously with either line in a solid or intermittent pattern, in yellow or white, and applying glass beads by the double drop pressurized bead system. The equipment shall have pressure gauges for each proportioning pump.
1105.07 Paint. Equipment for paint pavement marking shall be according to
Article 1105 — 01 and the following.
Truck mounted equipment shall be capable of maintaining a continuous operating speed of at least 8 mph (10 km/hr). The truck shall be capable of carrying a minimum of 200 gal (757 L) of paint. The bogie shall be steerable. The equipment shall have a guidance device to ensure accurate, straight line application.” SECTION 1106. WORK ZONE TRAFFIC CONTROL DEVICES
1106.01 Signs. Sign faces shall be according to the MUTCD and
Section 1091, except as modified herein. At the time of manufacturing, the retroreflective prismatic sheeting shall meet or exceed the minimum coefficient of retroreflection specified in Article 1091.03 for the sheeting type required by the Department’s Fabrication of Highway Signs Policy. Orange signs shall be fluorescent orange in color. Sign sheeting shall be mounted on materials such as aluminum, rigid plastic, or exterior grade plywood. Signs utilizing a base of fabric, fiberboard, or other highly Work Zone Traffic Control Devices Art. 1106.02 flexible or frangible material will not be permitted, except signs having a reflective sheeting face bonded to a durable plastic or fabric base will be permitted, (a) in work zones with posted speeds above 45 mph (70 km/hr) when workers are present to maintain the devices and (b) in all work zones having posted speeds of 45 mph (70 km/hr) or less. Specific requirements for various signs shall be as follows.
a.Work Zone Speed Limit Signs. Work zone speed limit sign assemblies shall be as shown on the plans. The individual signs that make up an assembly may be combined on a single panel.
b.Flagger Traffic Control Paddle. The "STOP" face shall consist of white letters and border on a red background. The "SLOW" face shall consist of black letters and border on a fluorescent orange background. Areas outside sign borders shall be light blue or black. The staff may consist of two sections joined by a coupling.
1106.02 Devices. Work zone traffic control devices and combinations of
devices shall meet FHWA crashworthiness standards for their respective categories. The categories are as follows. Category 1 includes small, lightweight, channelizing, and delineating devices that have been in common use for many years and are known to be crashworthy by crash testing of similar devices or years of demonstrable safe performance. These include cones, tubular markers, and plastic drums with no attachments. Category 1 devices shall be crash tested and accepted or may be self-certified by the manufacturer. Category 2 includes devices that are not expected to produce significant vehicular velocity change but may otherwise be hazardous. These include drums and vertical panels with lights, barricades, and portable sign supports. Category 2 devices shall be crash tested and accepted for Test Level 3. Category 3 includes devices that are expected to cause significant velocity changes or other potentially harmful reactions to impacting vehicles. These include crash cushions (impact attenuators), truck mounted attenuators, and other devices not meeting the definitions of Category 1 or 2. Category 3 devices shall be crash tested and accepted for either Test Level 3 or the test level specified. Category 4 includes portable or trailer-mounted devices such as arrow boards, changeable message signs, temporary traffic signals, and area lighting supports. Currently, there is no implementation date set for this category and it is exempt from the NCHRP 350 or MASH compliance requirement. The Contractor shall provide a manufacturer’s self-certification letter for each Category 1 device and an FHWA acceptance letter for each Category 2 and Category 3 device used on the contract. The letters shall state the device meets FHWA crashworthiness standards for its respective category and test level, and shall include a detailed drawing of the device. The set-up and use of certified/accepted devices shall be the same as that described in the letter.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 1182–1186 of 1,217. View official source ↗