644GLARE BARRIER

643.60 Flashing Beacon at: L u m p S u m

643.71 Traffic Signal Modification: Lump Sum 643.72 Temporary Traffic Signal: Lump Sum 643.80 Traffic Signals at: L u m p S u m

643.81 Traffic Signal Control System Lump Sum

643.83 Video Detection System L u m p S u m

643.86 Traffic Signal Loop Detector Each 643.90 Interconnect Wire Between: Lump Sum 643.91 Mast Arm Pole E a c h

643.92 Pedestal Pole E a c h

643.93 Strain Pole E a c h

643.94 Dual Purpose Pole E a c h

SECTION 644 - GLARE BARRIER Reserved SECTION 645 - HIGHWAY SIGNING

645.01 Description This work shall consist of designing, furni shing and installing new

signs, sign supports, delineators, Polyvinylchloride (PVC) Pipe and breakaway devices and removing, relocating and/or modi fying existing signs and sign s upports, in accordance with these specifications and in reasonably close conformity with th e Contract Plans.

645.02 General All equipment shall be new unless otherwise spe cified. Requests for

substitution of any specified material shall be submitted in wr iting with all documentation (specifications, mill certifications, etc.) in order to enable the Department to evaluate the proposal. Substitutes for specified material may be accepted, upon approval of the Fabrication Engineer. Substitutes shall give equal or better s ervice than the specified material. Where an existing system is to be modified, the exis ting material shall be removed, upgraded, or disposed of a s directed by the contract d ocuments. 645.021 Materials Materials shall meet the requirements specif ied in the following Sections of Division 700 - Materials: P o l y v i n y l c h l o r i d e ( P V C ) P i p e 706.08 R e f l e c t i v e S h e e t i n g 719.01 Demountable High Intensity Reflectorized Letters, Numerals, Symbols and Borders 719.02 A l u m i n u m E x t r u s i o n s 719.03 A l u m i n u m S h e e t s 719.04 Plywood 719.05 Demountable Reflectorized Delineators 719.06 A s s e m b l y H a r d w a r e 719.07 Aluminum Supports 720.01 Steel Supports 720.03 6-133 S t e e l H - b e a m P o l e s 720.06 A n c h o r B o l t s 720.07 U - C h a n n e l P o s t s 720.08 Wood Sign Posts 720.12 Paint for the edge and back of plywood and field coat paint for wood sign posts shall be an exterior grade dark green enamel conforming to Federal Speci fications TT-P-71b. Materials shall meet the gradation requirements only of the fol lowing: Aggregate for Untreated Surface Course and Leveling Course 70 3.10 Underdrain Backfill Material 703.22 645.022 Sign Layout Drawings The Contractor shall submit 3 set s of sign-face, layout- detail, and scale drawings. Fabrication of the signs shall not begin until the Contractor has received approval of these drawi ngs. The drawings shall contai n complete detailed information and dimensions. One set of drawings will be return ed to the Contractor, who will submit corrected drawings, if required. The drawings shal l be detailed using the same units used on the Contract Plans. 645.023 Sign Support Structures The design, materials and fabr ication of Sign Support Structures shall meet the requirements of the current edition o f AASHTO “LRFD Specifications for Structural Supports for Highway Signs, Lumin aires, and Traffic Signals” and interims thereto, as noted below except as otherwise indica ted within these specifications or on the Contract Plans. Beam-mounted roadside sign supports and associated signs and ha rdware shall be designed using the following criteria:  Basic wind speeds based on a 300-year mean recurrence interval  K z as specified in Table C3.8.4-1 ( Height and Exposure Factors)  Kd as specified in Table 3.8.5-1 (Directionality Factors)  G as 1.14, minimum (Gust Factor)  Cd as specified in Table 3.8.7-1 (Wind Drag Coefficients) Bridge-mounted, bridge-type, cantilever, and butterfly-type sig n supports and associated signs and hardware and all sign support structures supporting v ariable message signs shall be designed using the following criteria:  Basic wind speeds based on a 1700-year mean recurrence interval  Kz as specified in Table C3.8.4-1 ( Height and Exposure Factors)  Kd as specified in Table 3.8.5-1 (Directionality Factors)  G as 1.14, minimum (Gust Factor)  Cd as specified in Table 3.8.7-1 (Wind Drag Coefficients)  Deflection requirements as specified in Section 10.4 Cantilever and butterfly-type sign supports and all structures supporting variable message signs shall be classified as Fatigue Category I. Bridg e-type sign supports shall be 6-134 classified as Fatigue Category II. Fatigue Importance Factors shall be as specified in Table 11.6-1 (Fatigue Importance Factors). For bridge-mounted sign supports (including approaches to bridg e structures), the mounting height shall be measured as the distance of the mounte d sign(s) center of gravity to one of the following: For bridges over bodies of water : above the prevailing water le vel or, in the case of tidal waters, above mean high tide. For overpass structures: above the lower roadway level. For approach ramps: above the average adjacent ground level, if said ground level is more than 10 feet below the base of the structure. All cantilever and butterfly type sign support structures shall be equipped with an approved damping or energy-absorbing device. For aluminum construction, welding shall conform to the current edition of AWS Structural Welding Code, Aluminum, D1.2 for aluminum constructi on. After execution of the contract and before any shop work has co mmenced, the Contractor shall submit for approval the drawings, and design a nd fatigue computations if prescribed below, for all Sign Support Structures proposed to b e furnished and erected under this contract. The drawings shall be of sufficient detail to i ndicate material and/or dimensional conformance with t hese specifications and the Contr act Plans and, in the case of bridge, cantilever and butterfly type sign supports, shall b e sufficiently detailed to show all significant structural details. Approval for deviations from the Contract Plans and/or Specific ations shall be requested in writing and shall be approved by the Fabrication Engineer be fore being incorporated in the manufacturer's drawings. Requests for substitution of all specified material shall be submitted in writing, with full documentation (specifications, mill certification, etc.) enabling the Department to evaluate the proposal. Sign Support Structures and anchor bolts shall meet the require ments specified in Section 720 as well as the current edition of AASHTO “LRFD Spec ifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals” an d interims thereto. A Certificate of Compliance shall be provided for all applicabl e materials noted in Section 645.021 – Materials, in accordance with the requirement s of the General Statement of Division 700 - Materials.