Section 37-1-7601-00800-807 - Materials1.Generala. All materials to be used for sign fabrication, support fabrication, and foundation materials shall conform to the requirements of Section 721 of the current MDOT Standard Specifications for Road and Bridge Construction, as amended by special provisions and/or special specifications.b. The basis of acceptance of all materials included in this section shall conform to the requirements of Section 721 of the current MDOT Standard Specifications for Road and Bridge Construction, as amended by special provisions and/or special specifications.c. In addition to the above general requirements, the reflective sheeting, sign substrate, and sign supports shall conform to the specific requirements as described in this Rule.2.Retro-reflective Sheetinga. Specific service signs background, border, and copy shall be ASTM type III sheeting.b. Specific service signs border and copy may be either direct applied or demountable ASTM type III sheeting.c. Business sign sheeting shall be ASTM type III sheeting.d. Business sign copy, symbols, and border may be provided by silk screening with appropriate inks. This production process shall meet the requirements of the sheeting manufacturer.3.Sign Substrate All signs shall be fabricated with aluminum. 4.Sign Supportsa. Mainline and ramp specific service sign support shall be steel beams fabricated for slip base breakaway design as detailed in the standard plans.b. Trailblazer sign assemblies shall be steel posts for small signs. MDOT's Contractor may submit to the MDOT Program Administrator an alternate breakaway sign support system for approval when the number of trailblazer signs dictates such a system. 37 Miss. Code. R. § 1-7601-00800-807