SECTION 10 14 53 TRAFFIC SIGNAGE PART 1 - GENERAL 1.01 SECTION INCLUDES A. Furnishing and installing roadside traffic signage. B. Providing additional traffic signs as required in Sections 01 55 28 Controlling Traffic and 01 58 13 Temporary Project Signage. C. Install new signs on metal poles, unless otherwise indicated. D. Preservative treatment for wood posts and bracing. 1.02 RELATED SECTIONS A. Section 01 33 00: Submittal Procedures B. Section 01 43 10: Project Quality Program Requirements - Design/Build or Section 01 43 20: Project Quality Program Requirements - Design/Bid/Build (as applicable) C. Section 01 55 13: Temporary Project Signage D. Section 01 55 28: Controlling Traffic E. Section 01 66 00: Product Storage and Handling Requirements 1.03 REFERENCES A. American Society for Testing and Materials (ASTM): 1. ASTM A36 Carbon Structural Steel 2. ASTM A53 Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless 3. ASTM A123 Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products 4. ASTM A153 Zinc Coating (Hot-Dip) on Iron and Steel Hardware 5. ASTM A167 Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip. 6. ASTM A325 Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength 7. ASTM A653 Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process Traffic Signage 10 14 53-1 Baseline: 07/11/12
8. ASTM A1011 Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength B. State of California, Department of Transportation (Caltrans) 1. Caltrans California Manual on Uniform Traffic Control Devices (MUTCD), and Uniform Sign Chart 2. Caltrans Standard Specifications and Uniform Sign Chart C. California Redwood Association: 1. Redwood Inspection Service (RIS) - Grades of California Redwood Lumber D. Western Wood Products Association (WWPA): 1. Western Lumber Grading Rules E. West Coast Lumber Inspection Bureau (WCLIB): 1. Standard No. 17 Grading Rules for West Coast Lumber F. American Wood Protection Association (AWPA): 1. AWPA Book of Standards a. AWPA U1 Use Category System b. AWPA M4 Care of Preservative-treated Wood Products 1.04 QUALITY ASSURANCE A. Comply with Project Quality Program Requirements (see 1.02 above). B. Manufacturer and Applicator/Installer Qualifications: 1. Manufacturer s Qualifications: Minimum of 5 years experience in manufacturing of specified materials/products, with record of successful in-service performance. 2. Applicator/Installer Qualifications: Engage applicator/installer with minimum 5 years experience in installation of materials/products similar in material, design, and to extent indicated for this Project. a. Installer Certification: Obtain written certification from manufacturer, certifying that installer is approved by, licensed, or certified by manufacturer for installation of specified materials/products or systems. b. Provide list of minimum 5 projects similar in nature and size to that of this Project, where specified materials/products have been successfully installed/used. C. Marker Panels: Type N, Type P, and Type R mounted on post with traffic sign are considered to be sign panels. D. Sign Panels Furnished and Installed by Contractor: Reflectorized on aluminum sheeting material. Traffic Signage 10 14 53-2 Baseline: 07/11/12
1. Conform to Caltrans Uniform Sign Chart for size, shape, color, and legend of each sign. 1.05 SUBMITTALS A. Refer to Section 01 33 00 - Submittal Procedures, for submittal requirements and procedures. B. Material Safety Data Sheets (MSDS): Manufacturer s Material Safety Data Sheets for each type of material used in Work. 1.06 DEFINITIONS A. VOC: Volatile Organic Compound, as defined in SCAQMD Rule 102 Definition of Terms: 1. Any volatile compound of carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium carbonate, and exempt compounds. B. SCAQMD: South Coast Air Quality Management District 1.07 DELIVERY, STORAGE AND HANDLING A. Refer to Section 01 66 00 Product Storage and Handling Requirements, for general requirements for delivery, storage, and handling procedures 1.08 REGULATORY REQUIREMENTS A. Conform to requirements of Federal, State, and local authorities having jurisdiction. PART 2 - PRODUCTS 2.01 MATERIAL A. Metal Posts: 1. Mountings for Traffic Signs: Installed on barriers or railings. a. Fabricate from minimum 14 gage welded or seamless steel pipe conforming to ASTM A53 Grade B, and structural steel conforming to ASTM A36 or ASTM 1011, Grade 33 b. Bolted Connections and Anchorages: Conform to provisions in Section 55-1.02B(6) and Caltrans Standard Specifications, Section 75-1.03. c. Concrete Anchorage Devices: Conform to requirements in Caltrans Standard Specifications, Section 75-1.03 Traffic Signage 10 14 53-3 Baseline: 07/11/12
2. Mounting for Ground-Mounted Traffic Signs: Wide flange metal posts fabricated from structural steel conforming to ASTM A36 or ASTM 1011, Grade 33. a. Provide bolts, nuts, and washers for breakaway connections at wide flange steel posts conforming to ASTM A325. 3. Galvanize metal parts of traffic sign mountings after fabrication. a. Apply galvanizing conforming to Caltrans Standard Specifications, Section 75-1.05 B. Wood Posts and Braces: Posts of nominal four inches by four inches in size, and braces, constructed from of one of following: 1. Construction Heart Grade Redwood, Highway Post Grade Redwood, or Heart Structural Grade Redwood, conforming to RIS - Grades of California Redwood Lumber 2. Light Framing Construction Grade Douglas Fir, free of heart center; or Structural Light Framing No. 2 Grade Hem-Fir, free of heart center conforming to WCLIB Standard No. 17, or WWPA - Western Lumber Grading Rules C. Sign Panel Fastening Hardware: 1. Frame Assemblies for Multiple Sign Installations: Fabricate of structural steel conforming to ASTM A36, or of aluminum alloy, where indicated. a. Hot-dip galvanized frames fabricated of structural steel after fabrication. 2. Back Braces for Signs: Commercial quality, mild steel, hot-dip galvanized after fabrication. 3. Straps and Saddle Brackets: For mounting Sign Panels on electroliers, sign structure posts, and traffic signal standards. a. Corrosion-resistant chromium nickel steel conforming to ASTM A167, Type 302. b. Theft-proof bolts indicated to be stainless steel with chromium content of not less than 17 percent and nickel content of not less than eight percent. 4. Lag Screws, Bolts (except theft-proof bolts), Metal Washers, and Nuts: Commercial quality steel, hot-dip galvanized after fabrication. a. Fiber Washers: Commercial quality. 5. Galvanizing: Conform to provisions in Caltrans Standard Specifications, Section 75-1.05 for iron and steel hardware. 6. Use stainless steel fastenings for wood preservative treated wood; do not use galvanized fastenings. D. Wood Preservative Treated Materials: 1. Where lumber is indicated or specified to be preservative treated, comply with applicable requirements of AWPA U1 - Use Category System: Traffic Signage 10 14 53-4 Baseline: 07/11/12
a. Pressure treat wood members in contact with ground or fresh water with waterborne preservative to minimum retention of 0.40 lbs./cu. ft. b. Pressure treat above ground wood members with waterborne preservative to minimum retention of 0.25 lbs./cu. ft. c. After treatment, kiln-dry lumber to maximum moisture content of 19 percent. 2. Complete fabrication of treated items prior to treatment where possible. a. If cut after treatment, coat cut surfaces to comply with AWPA M4. PART 3 - EXECUTION 3.01 CONSTRUCTION A. Excavate holes to required depth for bottom of posts, as indicated B. Place posts in holes excavated in ground. C. Line between center of top of post and center of post at ground line to be plumb within tolerance not to exceed 0.02 foot in ten feet. D. Backfill space around wooden posts to finished ground surface with selected earth or sand, free of rocks or other deleterious material. 1. Place backfill material in layers approximately 0.33 foot thick; moisten each layer and thoroughly compact. E. Backfill metal posts with Class C Portland cement concrete conforming to provisions in Caltrans Standard Specifications, Section 90 or, at Contractor s option. 1. Backfill material may consist of Portland cement concrete produced from commercial quality aggregates and cement, containing not less than 470 pounds of cement per cubic yard. F. Dispose of surplus excavated material as directed by Metro or its designee. G. Carefully drill holes for bolts, threaded rods, or expansion anchorage devices in existing concrete by employing methods that will not cause spalling of concrete adjacent to holes. H. Install traffic signs at locations indicated or where directed by Metro or its designee conforming to provisions in Section 56 Signs, of Caltrans Standard Specifications and where indicated. 3.02 SIGN PANEL INSTALLATION A. Sign Panels: Install in accordance with details shown or as directed by Metro or its designee. Traffic Signage 10 14 53-5 Baseline: 07/11/12
1. Chipping or bending of sign panels is considered cause to require replacement. B. Closure Inserts: Install into openings at edges of adjacent sign panel sections. 1. Adjacent edges of sign panels are to be in contact for their full length. 2. Mount overlapping letters and borders at sign panel joints on face of sign with blind, self-plugging type rivets. C. Sign Panels: Attach to metal and wood posts, electroliers, sign structure posts, and traffic signal standards and mast arms with fastening hardware of types and sizes indicated. D. Bore pilot holes with bit size equal to base of lag screw thread 1. Install lag screws by turning lag screw into pilot holes by use of wrench. E. Furnish sign panels and fastening hardware. F. Remove and reinstall sign panels of Metro bus stop and street name signs at locations shown, at new locations where indicated, and as directed by Metro or its designee. G. Do not remove existing traffic signs until replacement signs have been installed or until existing signs are no longer required for direction of public traffic, unless otherwise directed by Metro or its designee. END OF SECTION 10 14 53 Traffic Signage 10 14 53-6 Baseline: 07/11/12