630Section 630

630.01 This work consists of furnishing, installing, moving, maintaining, and removing

temporary traffic signs, advance warning arrow panels, flashing beacon (portable) , barricades , channelizing devices, delineators , temporary traffic signals, temporary portable rumble strips , mobile pavement marking zones , temporary emergency pull -off areas , masking and unmasking existing signs in construction zones, concrete barriers , and Automated Flagging Assistance Devices (AFAD) as required by the Manual on Uniform Traffic Control Devices for Streets and Highways and the Colorado Supplement thereto, per the Contract. Devices shall comply with the performance criteria contained in NCHRP Report 350 (only applicable for devices developed before 2011) or Manual for Assessing Safety Hardware ( MASH ) (acceptable for all devices). Devices temporarily not in use shall, as a minimum, be removed from the shoulder area. Moving will include devices removed from the project and later returned to use. This work also includes Traffic Control Management , flagging, and pilot car operation . This work consists of providing traffic pacing operation to motorists within the project area, as shown on the plans. It includes locating traffic related incidents, providing roadside assistance, and clearing the traffic related incidents. The use of law enforcement officers shall be integrated into the Rolling Roadblock operations. MATERIALS

630.02 Signs and Barricades . Construction traffic sign and barricade materials shall conform

to the applicable portions of Section 614 with the following exception: Sign panels may be fabricated from plywood, aluminum, steel, or other suitable materials provided they are stable and durable enough to meet the other requirements of Section 614. Traffic control devices deemed inadequate by the Engineer shall not be used and shall be removed from the project site. Temporary sign support assembly shall be timber, perforated square metal tubing inserted into a larger base post or slip base, or perforated metal U -channel with a slip base. The temporary sign support assembly shall conform to NCHRP (only applicable for sign support assemblies developed before 2011) or MASH (acceptable for all sign support assemblies), and AASHTO requirements regarding temporary sign supports during construction. If U-Channel posts with a slip base are selected, they shall be used only in multi- post applications, as shown on Standard Plan S -630-4. Retro -reflective sheeting shall conform to the requirements of subsection 713.04. Retro -reflective sheeting types shall be as defined in the CDOT Retroreflective Sheeting Materials Guide. Retro -reflective sheeting shall be one of the types specified for the particular application in Table 630- 1. Retro -reflective sheeting for all signs requiring an orange background shall be Fluorescent. 630.02 630-2 Table 630 -1 RETROREFLECTIVE SHEETING TYPES Sheeting Type IV Type VI (Roll-up sign material) Type Fluorescent * Application Work Zone Work Zone Work Zone All Orange Construction Signs X Orange Construction Signs that are used only during daytime hours for short term or mobile operations X X Barricades (Temporary) X X Vertical Panels X X Flaggers Stop/Slow Paddle X X Drums and Tubular Markers # X X Non-orange Fixed Support signs with prefix “W” X Special Warning Signs X STOP sign (R1-1) YIELD sign (R1-2) WRONG WAY sign (R5-1a) DO NOT ENTER sign (R5-1) EXIT sign (E5-1a) X DETOUR sign (M4-9) or (M4 -10) X All other fixed support signs  X X All other signs used only during working hours X X All other signs that are used only during daytime hours for short term or mobile operations X X X Table 6 30-1 Notes: * Fluorescent Sheeting shall be of a brand that is on the CDOT Approved Products List. # Drum and Tubular Marker sheeting shall be manufactured for flexible devices, and sheeting materials shall conform to Section 713.  Fixed support signs are defined as all signs that must remain in use outside of working hours. They shall be mounted per Standard Plan S- 630-1.  RS 24 only.  White only.  For projects advertised before September 1, 2017, Type IV or Fluorescent sheeting will be permitted. For projects advertised on or after September 1, 2017, only Fluorescent sheeting will be permitted. 630.03 630-3 The Contractor shall provide sign panel legend for standard signs per “Standard Highway Signs” published by the FHWA and the Colorado Supplement thereto, and sign panel legend for special signs per the detailed sign layouts provided by the Engineer . Variable Message Signs (Portable) shall conform to the requirements of the Project Special Provision, Revision of Section 630, Portable Message Sign Panel.

630.03 Electronic Advance Warning Signs . Advance warning flashing or sequencing arrow

panels shall be furnished of a size as required by project conditions and shall meet the following requirements: Table 630 -2 REQUIREMENTS FOR ELECTRONIC ADVANCE WARNING SIGNS Type Minimum Size Minimum Number of Panel Lamps Minimum Legibility Distance A 24"x48" 12 1/2 mile B 30"x60" 13 3/4 mile C 48"x96" 15 1 mile The panel face shall be rectangular in shape, solid construction and shall be finished nonreflective black. The panels shall be mounted on a vehicle, trailer, or other suitable support. Vehicle- mounted panels shall be provided with remote controls. Arrow panels shall have the capability of the following mode selection: left arrow or chevron, right arrow or chevron, left and right arrow, and caution. The caution mode consists of four or more lamps, arranged in a pattern that will not indicate a direction. Arrow panels shall include an automatic photocell sensor type signal lamp dimmer with manual override and shall be capable of minimum 50 percent dimming from rated lamp voltage.

630.04 Temporary Traffic Signals . Temporary traffic signals must meet the physical display

and operational requirements of conventional traffic signals. A minimum of two signal faces shall be provided for each approach and each signal face shall consist of three 12- inch sections. At railroad grade crossing locations, one signal face with three 8- inch sections shall be visible from each rail approach. The traffic signal controllers shall conform to the requirements of subsection 614.08(b) and shall be capable of two- phase operation, or more if specified on the plans, with all- red timing intervals. The Contractor shall submit a list of equipment proposed to be used. The equipment shall be identified by trade name, size and number. Material deemed inadequate by the Engineer shall not be used.

630.05 Traffic Cones . Traffic cones shall not be used outside of working hours unattended.

The minimum cone height shall be 28 inches. However, when they are used on freeways, at nighttime , or when specified in the Contract, the minimum height shall be 36 inches. 630.06 630-4 When traffic cones are used during nighttime , they shall be reflectorized. The reflectorized material shall be selected from the Colorado Approved Products List and shall have a smooth, sealed outer surface that will display the same approximate color day and night. Reflectorization of cones shall be provided by a white band at least 6 inches wide placed no more than 3 to 4 inches from the top, and an additional white band, 4 inches wide, placed a minimum of 2 inches below the 6 -inch band. Tubular markers shall be 3 to 3 1/2 inches in diameter, shall be 36 inches plus or minus 1/2 inch in height, predominantly orange in color , and shall be reflectorized.

630.06 Channelizing Device (Fixed). Channelizing Device (Fixed) shall be 36 inches plus

or minus 1/2 inch in height and 3 to 3 1/2 inches in width for the surface facing traffic. The shape of the device is immaterial as long as it can accommodate the striping pattern and functions as described below. Reflectorization shall be alternating 4 to 6 inches wide orange and white stripes s lanting downward at a 45 -degree angle toward the side where traffic will pass. The striping shall start at the top and extend downward at least 32 inches. Reflective sheeting shall be Type IV . These devices shall be manufactured of flexible high -impact resistant material, shall be physically attached to the pavement, and shall be capable of returning to a vertical position after impact by a vehicle. The brand name and model of the Channelizing Device (Fixed) shall be submitted to the Engineer for approval before use.

630.07 Temporary Channelizing Devices .

630.08 Temporary Barrier Temporary Barrier shall comply with the crash test requirements

contained in NCHRP Report 350 (for devices manufactured before 2020) or MASH (acceptable for all temporary barrier). Retroreflectorization is required on all temporary barrier according to Standard Plans S-612-1 and M -606-14 and shall meet material qualities per Section 713. All barrier types shall be designed to accommodate appropriate end treatments, transitions and delineation devices. Previously damaged barrier shall not be installed, and barrier damaged after installation shall be removed and replaced or repaired (for minor damage not affecting design intent) per manufacturer. 630.09 630-6 (a) Concrete Barrier. Temporary concrete barrier shall conform to precast Type 7 Concrete Barrier as detailed in Standard Plan M -606-14.

630.09 General. All traffic control devices shall be provided with all components necessary

to comprise a complete installation. Traffic control devices deemed inadequate by the Engineer shall not be used and shall be removed from the project site. Work zone devices designated by FHWA as Category I, II, or III, shall comply with the performance criteria contained in NCHRP Report 350 (only applicable for devices developed before 2011) or MASH (acceptable for all devices). Devices designated as Category IV , including but not limited to portable or trailer -mounted devices such as flashing arrow panels, temporary traffic signals, area lighting supports, and changeable message signs are not required to meet NCHRP 350 or MASH requirements. Except for Category IV devices, the Contractor shall obtain and present to the Engineer the manufacturer’s written NCHRP 350 (only applicable for devices developed before 2011) or MASH (acceptable for all devices) certification for each work zone device before it is first used on the project. The Flashing Beacon (Portable) shall include all work and material necessary to complete the item. The beacon head, lens, signal lamp, flasher and electrical boxes and fittings shall conform to permanent flashing beacon requirements. The post or mounting m ethod shall conform to construction traffic control materials. The flashing beacon shall be per subsection 614.06. Portable devices that require weight to prevent overturning shall be weighted with appropriately sized sandbags . Traffic control devices that are damaged, weathered, worn, or otherwise determined to be unacceptable, shall be replaced at the Contractor 's expense. Delineator (Type) (Temporary) shall conform to Delineator (Type) described in Section 612. Undamaged Delineator (Type) (Temporary), when approved, may be used as Delineator (Type). CONSTRUCTION REQUIREMENTS

630.10 Transportation Management Plan . The Contractor shall prepare a Transportation

Management Plan for each phase of the project. The Contractor shall manage the work zone impacts of the Project per the Transportation Management Plan (TMP ). For significant projects, the TMP shall consist of the Traffic Control Plan (TCP) included in the Contract, a Transportation Operations (TO) component, and Public Information (PI) requirements. The TCP addresses traffic safety and control through the work zone; the TO component shall address sustained operations and management of the work zone impact area; and the PI component requirements shall address communication with the public and concerned stakeholders. For non -significant projects, TMP shall consist of the TCP and other components as specified in the Con tract. The proposed TMP shall be approved in writing by 630-7 the Engineer before the Contractor begins the corresponding phase of construction. The initial TMP shall be submitted at the Pre -construction Conference. The project will be considered a significant project unless otherwise specified in the Contract. The Contractor ’s superintendent shall implement the TMP .

630.11 Traffic Control Management .

The contractor shall designate an individual, other than the superintendent, to be the Traffic Control Supervisor (TCS) . The T raffic Control Supervisor shall be certified as a worksite traffic supervisor by an authorized entity and shall have a current flagger certification from an authorized entity. A copy of the Traffic Control Supervisor 's certifications shall be provided to the engineer at the pre -construction conference and shall be available at all times on the worksite. The contractor’s superintendent, and all others serving in a similar supervisory capacity, shall have completed an approved traffic control supervisor training as offered by the authorized entities. The certifications of completion or certifications of ach ievement for all appropriate staff shall be submitted to the engineer at the pre -construction conference. The Traffic Control Supervisor’s duties shall include:

630.12 Temporary Masking Signs . Sign legend or portions thereof that conflict with the

construction signing or Traffic Control Plan shall be completely covered by the Contractor so that none of the covered sign or legend is visible to traffic. If the whole sign is to be covered, it shall be covered with a nontransparent material that covers the entire face of the sign. If partial legend is to be covered, it shall be with a material furnished with reflective sheeting conforming to Section 713 and shall be the same color as the masked panel. All covering materials shall be plywood, hard -board, sheet metal, aluminum, corrugated polypropylene or rigid plastic, and shall be durable enough to resist deterioration due to weathering and atmospheric conditions for the duration of the project. Examples are aluminum at least 0.040 inch thick, corrugated polypropylene board, and plywood at least 3/8 inch thick. Adhesives, glues, tapes, or mechanical fasteners that mar the face of the panel to be masked shall not be used.

630.13 General. Portable construction traffic signs shall be removed when not required.

Permanently mounted construction traffic signs shall be masked or turned away from traffic when not required. When work is suspended, or the project is in free time, and there is no condition requiring traffic control devices or construction traffic signs, all of the construction traffic signs shall be masked or turned away from traffic. If this condition is to exist for more than 30 days, all construction traffic signs shall be remov ed. When storing portable signs or supports within the project they shall be removed beyond the clear zone and shall not be visible to traffic. The minimum clear zone distance shall be 18 feet, measured from the edge of traveled way. If the signs cannot be stored at least 18 feet from the traveled way, they shall be removed. Signs shall not be stored on the paved surface. All storage areas shall be approved. When masking is used, it shall be done per subsection 630.12. Perforated square metal tubing or U -channel shall be installed for temporary sign supports according to the manufacturer’s recommendations and as shown on the Plans . The Contractor shall be responsible for all maintenance of the signs and posts. If a sign or post is damaged during construction, the contractor shall be responsible for replacing and maintaining the sign and posts at no additional cost to the Project . The construction traffic signs for reduced speed limit signs and double fines signs shall be placed, or unmasked, no sooner than four hours before the start of work activities. The time when the double fine signing is to be placed or unmasked and location of the reduced speed limit signs and double fine signs shall be as shown on the plans or as directed by the Engineer . Double fine signing shall be removed or masked as soon as work activities are completed. Work activities are defined as all construction and maintenance activities where workers are prese nt in the clear zone, or there are existing hazards in the travel way, shoulders, or clear zones. Hazards include but are not limited to workers, equipment , drop offs, lane closures, 630.14 630-13 temporary guardrail, and other objects, both in the roadway and the adjacent roadside, that may affect the traveling public. The retroreflective surfaces of all signs and other traffic control devices shall be cleaned as frequently as necessary to preserve their legibility and retroreflectivity. However, all devices shall be cleaned a minimum of once every two weeks. Vertical panels fabricated with vehicle wheel rims, and steel drum channelizing devices shall not be used. Channelizing Device (Fixed) shall be attached to the pavement per the manufacturer's recommendations. Anchoring methods or devices that penetrate the surface of the permanent pavement will not be permitted. Upon removal of the device , the roadway surface shall be cleaned , patched , or both as approved by the Engineer . The flashing beacon shall be installed per subsection 614.09. For solar powered flashing beacons, batteries may be placed in a lockable container attached to a supplemental pole supporting the solar panels that is installed outside the clear zone, or behind guardrail. If it is not possible to plac e this assembly outside the clear zone or behind guardrail, the batteries shall be placed in a lockable pull box and buried at the base of the pole. Other installations shall be as approved. The Contractor shall ensure the proper operation of the flashing beacon throughout the duration of the project. If the beacon fails to operate properly, it shall be repaired or replaced at the Contractor’s expense. The Contractor may propose an alternate method by sub mitting a revised MHT per subsection 630.10 for approval by the Engineer . All additional traffic control devices required during the time that the beacon is being repaired or the MHT is being prepared and reviewed shall be at the Contractor’s expense.

630.14 Flagging and Pilot Car Operation . Flagging and pilot car operation shall be performed

as described in the latest edition of part VI of the MUTCD as adopted by CDOT. All traffic control personnel shall wear all appropriate Personal Protective Equipment (PPE), including safety apparel and hardhats meeting the requirements of the latest version of the International Safety Equipment Association (ISEA)’s “American National Standard for High - Visibility Safety Apparel and Headwear”. Safety apparel shall be labeled as meeting the standard performance for Class 2 or Class 3 risk exposure. The apparel and hardhat background material color shall be either fluorescent orange- red o r fluorescent yellow -green as defined in the standard. The retroreflective material shall be either orange, yellow, white, silver, yellow - green, or a fluorescent version of these colors, and shall be visible at a minimum distance of 1,000 feet. Nighttime flagging stations shall be illuminated with flood lights unless otherwise approved and shall not be paid for separately.

630.15 Emergency Pull- Off Area (Temporary) . The specific locations where emergency

pull-off areas will be allowed shall be clearly detailed in the traffic control plans (TCP). The emergency pull -off areas shall be spaced one- half to one mile apart, unless otherwise shown on the TCP . If the Engineer determines that law enforcement is required, the pull off area shall be extended as shown on the plans. Temporary pavement material for the pull -off area shall be a minimum of 3 inches thick unless otherwise shown on the plans and may be either PCCP or HMA. If the materials used require that the Contractor provide thickness greater than the minimum to serve the life of the pull -off area, these shall be provided at no additional cost to the project. Upon completion of the project, the Contractor shall remove the pull- off area and return the shoulder , signing, and earthwork to its original condition, unless otherwise shown on the plans. Materials removed and not designated in the Contract to be salvaged or incorporated into the work shall become property of the Contractor. All damaged portions of the shoulder , earthwork, landscaping, signing, culverts, and end sections shall be repaired or replaced at the Contractor ’s expense.

630.16 Temporary Portable Rumble Strip . Temporary portable rumble strips shall be

placed in locations shown on the traffic control plans and shall be removed at the end of each workday , or as approved by the Engineer . Before placement of the rumble strip, the roadway shall be cleaned to be free of dust, sand, and other materials that may cause slippage. The minimum roadway temperature at the time of installation shall be per the manufacturer’s recommendations. 630-15 If the strip slides, it shall be thoroughly cleaned on both sides, and reset onto a clean roadway surface. A minimum of two temporary portable rumble strips shall be arranged in an array, as shown on the plans. An additional temporary portable rumble strip may be added, as approved by the Engineer . Damaged or missing rumble strips shall be replaced at the Contractor ’s expense. Temporary portable rumble strips shall be used only on roadways with posted speed limits of 75 MPH or less. Rolling Roadblock .

630.17 Quantities to be measured for construction traffic control devices shall be the

number of units of the various sizes and descriptions listed below. Table 630-7 SIZING FOR CONSTRUCTION TRAFFIC SIGNS Panel Size A Up to 9 Square Feet including Type 1 and Type 2 Barricades Panel Size B Over 9 to 16 Square Feet Panel Size C Over 16 Square Feet Special As shown on the plans The total number of traffic control devices of each type on the schedule and approved subsequent modified schedules shall be the maximum number approved for payment. Traffic channelizing devices consisting of vertical panels, traffic cones, or drums will be measured by the unit. Traffic channelizing devices consisting of vertical panels, traffic cones, or drums will be measured by the unit. Barrier (Temporary) will be measured by the linear foot. Barricades will be measured by the number used. Barricade warning lights shall be furnished as a part of this item when required by the Traffic Control Plan (TCP). Advance Warning Flashing or Sequencing Arrow Panels will be measured by the unit according to size. Temporary Portable Rumble Strips will be measured by the actual number of strips that are used on the project. The Flashing Beacon (Portable) will be measured as a unit complete in place. Each sign panel will be paid for under the appropriate item. The solar power system for Flashing Beacon (Portable), poles, and lockable container will not be measured and paid for separately but shall be included in the work. The quantity to be measured for Traffic Control Management will be the number of authorized 24 -hour days of active TCM performed by the TCS/TCS Trainee (Flagger) pair or another representative certified as a work site traffic control supervisor. Payment will be made for one day of Traffic Control Management regardless of the number of TCSs required to adequately control the work. An author ized 24 -hour day of TCM is each calendar day active traffic control occurs per an approved MHT. This includes activities such as flagging operations, pilot car operations, and setting up or removal of construction zones, shoulder closures, lane closures or detours. Traffic control devices that are left in place during non -working hours, including configurations such as lane closures, temporary channelization or detours, are not considered active traffic control. The quantity to be measured for Traffic Control Inspection will be the number of authorized 24 -hour days of traffic control inspection (TCI) performed by the TCS/TCS Trainee (Flagger) pair or another representative certified as a worksite traffic control supervisor. An authorized 24 - hour day of TCI is each calendar day that traffic control devices, as shown in the MHT are in use, masked, or turned away from traffic on the project, and the only traffic control activity is the inspection of traffic control d evices. 630.17 630-17 Cleaning and maintaining of traffic control devices are not considered traffic control activities subsidiary to the TCM, TCI, or flagging pay items. Cleaning and maintaining devices are included in the Basis of Payment section. Payment will be made for either Traffic Control Management or Traffic Control Inspection for each calendar day as defined above in 630.18. Payment will not be made for both pay items for the same calendar day. Work on a night shift that begins before midnight and ends after midnight will be measured by the calendar day that the shift ends. The quantity to be measured for flagging will be the total number of actual flagging hours that are used as authorized per an approved MHT. Payment will not be made for time spent by flaggers to set up and take down construction traffic control devices. Payment will not be made for additional flaggers necessary to cover flagger break times and shall be included in the cost of the work. The quantity to be measured for pilot car operation will be the total number of hours that pilot car operation is used as authorized. Hours of flagging and hours of pilot car operation in excess of those authorized shall be at the Contractor’s expense. Emergency Pull -Off Area (Temporary) will be measured by the actual number of pull- off areas that are constructed, maintained, and removed. When the Contract provides payment for Mobile Pavement Marking Zone on a lump sum basis, it will not be measured but will be paid for as a single lump sum upon satisfactory completion of the work associated with this item. When the Contract provides payment for Mobile Pavement Marking Zone by the day, it will be measured as the actual number of days that Mobile Pavement Marking Zone is utilized in the project. AFADs will be measured per device. While an AFAD is in operation, the operating flagger shall not perform other flagging duties except as outlined in Method 2 as defined in Subsection 630.14 and MUTCD Chapter 6. The operator flagger for the AFAD is not paid for separately but included in the cost of the work. Rolling Roadblock Operation will be measured as the actual number of hours that this operation is used. If measured by the day, Rolling Roadblock Operation will be measured as the actual number of days, or part of, that this operation is used. Temporary VMS signing will be measured and paid for per Section 630.02. Emergency Pull -Off Area (Temporary) will be measured by the actual number of pull -off areas that are constructed, maintained, and removed. When the Contract provides payment for Mobile Pavement Marking Zone on a lump sum basis, it will not be measured but will be paid for as a single lump sum upon satisfactory completion of the work associated with this item. When the Contract provides payment for Mobile Pavement Marking Zone by the day, it will be measured as the actual number of days that Mobile Pavement Marking Zone is utilized in this project. 630.18 630-18 AFADs will be measured per device. While an AFAD is in operation, the operating Flagger shall not perform other flagging duties except as outlined in Method 1 as defined in Subsection 630.14 and MUTCD Chapter 6. Rolling Roadblock Operation will be measured as the actual number of hours that this operation is used. If measured by the day, Rolling Roadblock Operation will be measured as the actual number of days, or part of, that this operation is used. Temporary VMS signing will be measured and paid for per Section 630. BASIS OF PAYMENT

630.18 Payment for the individual traffic control devices necessary to complete the work

shall be full compensation for furnishing, erecting, cleaning, maintaining, resetting, repairing, replacing, moving, removing, and disposing of the construction traffic control devices. All construction traffic control devices that are not permanently inco rporated into the project will remain the property of the Contractor . Construction traffic control devices, as determined by the project Traffic Control Plan (TCP), will be paid for as follows: 50 percent of the accepted amount upon first utilization, an additional 40 percent of the accepted amount when 75 percent of the original contra ct amount has been earned, and the final 10 percent when the project has been completed per subsection 105.21, exclusive of any maintenance periods. The percent of original contract amount earned will be determined by comparing the amount earned for bid items, other than traffic control devices and mobilization, with the original contract amount minus the amounts bid for traffic control devices and mobilization. The accepted quantities will be paid for at the contract unit price for each of the pay items listed below that appear in the bid schedule. 630.18 630-19 Payment will be made under: Pay Item Pay Unit Construction Traffic Sign (Panel Size ) Each Construction Traffic Sign (Special) Square Foot Vertical Panel Each Vertical Panel (With Light) (Flashing) Each Vertical Panel (With Light) (Steady Burn) Each Advance Warning Flashing or Sequencing Arrow Panel (____Type) Each Drum Channelizing Device Each Traffic Cone Each Tubular Marker Each Channelizing Device (Fixed) Each Barrier (Temporary) Linear Foot Delineator (Type ) (Temporary) Each Barricade (Type ) (Temporary) Each Traffic Control Management Day Traffic Control Inspection Day Flagging Hour Pilot Car Operation Hour Flashing Beacon (Portable) Each Traffic Signal (Temporary) Lump Sum Mobile Pavement Marking Zone Lump Sum Emergency Pull Off Area (Temporary) Each Mobile Pavement Marking Zone Day Stackable Vertical Panel Each Stackable Tubular Marker Each Temporary Portable Rumble Strips Each Automated Flagging Assistance Device Each Automated Flagging Assistance Device Day Rolling Roadblock Day Rolling Roadblock Hour Construction Traffic Sign (Special) is a project specific sign indicated on the Schedule of Construction Traffic Control Devices. When Traffic Control Management and Traffic Control Inspection are not pay items, Traffic Control Management will not be paid for separately, but shall be included in the work. Flagger hand devices will not be measured and paid for separately but shall be included in the work. Cost of electrical power, including batteries, for all temporary lighting or warning devices shown on the TCP will not be paid for separately but will be considered subsidiary to the item. Temporary masking signs, including the covering materials and fastening devices, will not be measured and paid for separately but shall be included in the work. 630.18 630-20 The Contractor may provide larger construction traffic signs than those shown on the plans, if approved; however, payment will be made for the panel size designated. If the Contractor fails to complete construction within the approved contract time, Payment will not be made for the use of Section 630 pay items for the period of time after expiration of the approved contract time. These items shall be provided at the Contractor’s expens e. Cleaning and patching of the roadway after removal of the Channelizing Device (Fixed) will not be paid for separately but shall be included in the work. Placement, unmasking, removal and masking of reduced speed limit signs and double fines signs, will not be measured and paid for separately but shall be included in the work. Preparation and implementation of the Traffic Management Plan will not be measured and paid for separately, but shall be included in the work, except for public information services that will be measured and paid for per Section 626 as revised for this project. Traffic Control Management, vehicles, traffic control devices, and all other work, materials and equipment necessary for the mobile pavement marking zone will not be measured and paid for separately but shall be included in the work. Flagging required for the mobile pavement marking zone will be measured and paid for separately. Payment for Emergency Pull -off Area (Temporary) will be full compensation for all work, materials, and equipment necessary to construct, maintain and remove the emergency pull-off area including: HMA or PCCP required for constructing the temporary pull -off area; temporary concrete barriers, impact attenuators and other traffic control devices; construction signing; and maintaining the temporary pavement. Payment for Temporary Portable Rumble Strips will be full compensation for all work and material required to complete the item including: cleaning the roadway surface, installing the rumble strip, maintaining the strip through the duration of each day’s use (including cleaning and resetting of the strip if it slides), removal at the end of each workday, and final removal. Signing required for the rumble strip will be measured and paid for under the construction signing items. Construction signing will be measured and paid for under the appropriate construction signing items. Portable Variable Message Signs (VMS) will be measured and paid for per the project special provision, Revision of Section 630, Portable Message Sign Panel. Traffic control officers and vehicles will be paid for per the project special provision, Revision of Section 630, Uniformed Traffic Control. Flaggers will be paid for under Pay Item 630, Flagging. Two-way radios will not be measured and paid for separately but shall be included in the work. Temporary concrete barrier walls, if required, will not be measured and paid for separately but shall be included in the work. 641.01 641-1 SECTION 641 SHOTCRETE DESCRIPTION

641.01 This work consists of constructing pneumatically applied concrete onto designated

surfaces at locations and thicknesses with the lines and dimensions shown on the plans or as designated by the Engineer . MATERIALS

641.02 Shotcrete proportioning and placement shall comply with the requirements of ACI

506.2, "Specifications for Materials , Proportioning and Application of Shotcrete," and the requirements of Section 601 (Class Shotcrete) Pre-packaged material shall meet the requirements of ASTM C1480 and meet the sulfate resistance requirements listed in the general notes. The maximum aggregate size in shotcrete shall be 1/2 inch. When specified, steel fibers shall be incorporated into the mixture. Steel fibers shall conform to the requirements of ASTM C1116, Type I, Section 4.1.1. When specified, polypropylene fibers shall be incorporated into the mixture. Polypropylene fibers shall have a nominal length of 3/4 inch and shall conform to the requirements of ASTM C1116, Type III, Section 4.1.3.

641.03 Submittals. The following documents and shop drawings shall be submitted per

subsection 105.02. Shotcrete shall not be placed on the project before the submittals have been reviewed and approved by the Engineer .