715.39ELA STOMERIC GASKET AND SEALI NG MATERIAL :

715.38.1 General: Steps shall be composed of a steel reinforcing bar encased in plastic or

rubber, pressure -molded to the steel; steps shall have a minimum cross -sectional dimension of one ( 1) inch. Reinforcing shall be continuous through the entire length of the legs and tread. Steps shall have a depressed tread or a ½ inch minimum height cleat at tread ends, and a top surface configuration such that it will prevent or minimize slippage during ascent or decent.

715.38.2 Steel Reinforcing: Steel shall be a deformed rei nforcing bar; either No. 3, Grade

60, or No. 4, Grade 40 or 60; meeting the requirement of AASHTO M 31.

715.38.3 Plastic: Plastic shall be a grade of propylene copolymer which meets the

requirements of ASTM D4101.

715.38.4 Corrosion -Resistant Rubber : The rubber compound shall meet the physical

requirements of ASTM C443 except the durometer, Shore A, hardness shall be 70 plus or minus five.

715.38.5 Acceptance: Steps which have been evaluated by the Division and appear on the

Division's list of a pproved sources will be accepted. If the Contractor proposes to use a step not previously approved, a complete step and certified test data conforming to the above stated requirements shall be submitted for evaluation.

715.39 Ela Stomeric Gasket and Seali Ng Material :

These Specifications cover those elastomeric materials intended for use as, but not restricted to, such noncritical applications as gaskets, sealing materials, miscellaneous drainage items, etc. The elastomeric material shall meet the following requirements: Tensile Strength, minimum psi, ASTM D412 ................................ ......1,200 Elongation at Break, minimum percent, ASTM D412 ............................ 350 Shore Durometer Hardness, ASTM D2240 Minimum ................................ ................................ ........................ 35 Maximum ................................ ................................ ....................... 65 Compression Set, max percent, ASTM D395, Method B ................................ ................................ ........................ 25 Accelerated Aging, ASTM D573 (96 hr. at 70EC): Decreased Tensile Strength, maximum percent ............................. 15 Decreased Elongation, maximum percent ................................ ......20 Water Abs orption by Weight, maximum percent, ASTM D471 ............... 10

715.40 Pavement Marking Material :

This material includes all pavement marking material exclusive of White or Yellow Fast - Dry Traffic Zone Pa int (Types II or IX). Certification from the manufacturer that the material supplied meets the applicable requirements of these Specifications is required. The certification shall include the name and address of the manufacturer, the trademark or trade n ame, kind of material, reference to the Division's Specification (Subsection Number), quantities, lot number and date of manufacture. The supplier shall have equipment and qualified personnel to conduct all of the tests that are required by these specific ations.

715.40.1 : Blank

715.40.2 Preformed Intersection Traffic Markings (Type V Material): The markings

described are preformed, retroreflective pavement markings conforming in color, size and shape to the WVDOH Standard Details Book, Vol. II, and to the Federal Highway Administration (FHWA) Manual on Uniform Traffic Control Devices (MUTCD) Preformed thermoplastic traffic markings shall be fabricated to a uniform thickness of not less than 125 mils, including retroreflective beads. Preformed p avement marking tapes, applied as Type V material, shall be fabricated such that no portion of the material profile is less than 60 mils, including adhesive and retroreflective beads. As a minimum, preformed thermoplastic traffic markings shall be capabl e of being applied to clean road surfaces at minimum road surface and ambient air temperatures of 35 °F, with a surface primer if necessary, providing moisture has been sufficiently removed from the application surface. As a minimum, preformed pavement m arking tapes applied as Type V material shall be capable of being applied to clean road surfaces, with a surface primer if necessary, when the following conditions are met:

715.40.2 1 -Enhanced Skid Resistant Preformed Thermoplastic Traffic Markings:

Specific markings, as identified on the Plans or otherwise on the applicable sheets in the WVDOH Standard Details Book, Vol. II, shall be applied only with preformed thermoplasti c markings with enhanced skid resistant properties. The enhanced skid resistance of this material shall be achieved by utilizing surface applied abrasives with a minimum hardness of 7 (Mohs scale). The material, after application, shall have a minimum skid resistant value of 60 BPN when tested in accordance with ASTM specification E303, and shall not fall below this value for the warranty period specified in

715.40.2 2.

715.40.2 2 -Adherence, Retroreflectivity, Color, Road Presence, and Skid

Resistance Warranty Requirements: Section 663 requires the Contractor to correct any markings not meeting the warranty requirements specified herein up to the finalization date of the contract, if the cause of non -conformance with the performance requirem ents herein is due to either improper application or material defect(s), and requires the Contractor to correct any markings not meeting the warranty requirements specified herein for the balance of the one (1) year period from the date of installation whe n the failure is determined by the WVDOH to be caused by improper application. Warranty of the performance of the material for the balance of the warranty periods specified herein shall be provided directly to the WVDOH by the material manufacturer, and sh all apply only to non-conformance with the performance requirements herein determined by the WVDOH to be caused by material defects. Transverse markings shall be warranted to adhere to both asphalt and concrete, maintain road presence, and meet the retro reflectivity and color requirements described