Construction what contract specifications and requirements are met. Certificates should be signed by a manufacturer’s representative who is in a position to legally bind the manufacturer. Note it is extremely rare that manufacturer’s will recognize a supplier as an individual who can legally bind them. The following Standard Specifications cite COCs as acceptance for some materials: 02078 Asphalt Overlay Fabric 02610 Pipe, Pipe-Arch, Structural Plate Pipe, and Structural Pipe Arch (for joint pressure requirements) 02622 Underdrain 02633 Concrete Drainage Structures 02645 Precast Concrete Box and Three-Sided Culvert Structures (for grout) 02735 Micro-Surfacing (for mineral filler & emulsion) 02789 Slurry Seal Coat (for mineral filler & emulsion) 02841 W-Beam Guardrail 02893 Overhead Sign/VMS Structure (for nut proof load tests) 03211 Reinforcing Steel and Welded Wire 03311 Joint Closure (for reinforcing steel) 03338 Precast Substructure Elements (for grout) 03339 Precast Concrete Deck Panel (for grout) 03340 Precast Approach Slab (for grout) 03372 Thin Bonded Polymer Overlay (for all materials) 03921 Concrete Slope Protection Repair 05120 Structural Steel (for nut, bolt, and washer proof tests) 05822 Bearings (for polytetraflouroethylene (PTFE) coefficient of friction values) 05832 Expansion Joint (for AISC Simple Bridge Structure (SBR)) 05835 Modular Expansion Joint ((for AISC Simple Bridge Structure (SBR)) 07921 Sealing Existing Concrete Slope Protection Joints 09981 Concrete Coating Manufacturer’s product data must indicate the material meets the applicable contract specification requirements, including ASTM or AASHTO specifications. The RE must also verify the material delivered to the site is the material represented by and from the manufacturer corresponding to the product data. This may be accomplished through Contractor invoices identified with the project number and description, which can be matched to the materials described in the product data, by visual observation (VIR or inspector’s documentation) of labeling, or markings indicating the manufacturer and product match the manufacturer’s description and product data information.
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