SECTION 630: GLARE SHIELDS
630.1 Description
This Work consists of providing and installing glare shields.
630.2 Materials
The Contractor shall provide new Material for permanent instal lations or “like-new” Material for temporary installations. The Contractor shall provide glare shields from the Department ’s Approved Products List. The Contractor shall obtain Project Manager approval of “like- new” glare shielding systems for temporary insta llations before installation.
630.2.1 Mounting System
The Contractor shall use a mounting system with an approved st eel mechanical anchor bolting system. The Contractor shall ensure that each anchor h as a minimum 3,000 lb pullout and shear strength.
630.2.1 1 Multiple Glare Shield Blade Systems
For multiple glare shield blade systems, the Contractor shall flush mount and internally thread the anchors to allow for removal and replacement of the base rail without damage to the anchors. The Contractor shall use a base rail made of a corrosion-resis tant Material or protected with a rust-inhibiting coating.
630.2.2 Glare Shield Blades
The Contractor shall provide glare shield blades in accordance with the following requirements: 1. Use blades of a durable impact-resistant, non-warping, and n onmetallic Material; 2. The blade Material will not dev iate more than 15% in the ten sile strength and elongation values evident at 70 °F if tested at -20 °F and 120 °F in accordance with ASTM D 638; 3. The blade Material will not dev iate more than 15% in the ten sile strength and elongation values evident at 70 °F after 2,000 h exposure if te sted in accordance with ASTM D 638 and ASTM G 154; and 4. The blade color shall be as approved by the Department.
630.3 Construction Requirements
The Contractor shall place four (4) inch × 12 inch Type IX ref lective sheeting, yellow or white as appropriate, on the blades at 40 ft intervals.
630.3.1 Glare Shield Blade Spacing
The Contractor shall space glare shield blades at intervals th at will block the light within the glare zone, defined as the zone 22.5° left and right from t he axis of headlight. The Contractor shall make the spacing uniform and uninterrupte d for the entire length of the installation.
630.3.2 Base Rail Construction Requirements
The Contractor shall ensure that base rails for multiple glare shield blade systems fit within the top edge of the concrete wall barrier, or form aroun d the edge in a manner that fits tightly against the concrete wall barrier. The Contractor shall ensure that each base rail is a continuou s, single unit spanning the length of the concrete wall barrier unit. The Contractor shall not span joints between concrete wall bar rier sections with the base rail units of multiple glare shield blade systems. The Contractor shall secure each ten (10) foot base-rail unit to the concrete wall barrier with at least three (3) anchor p oints, unless the Project Manag er or the manufacturer requires more anchors.
630.3.2 1 Blade-to-Base Rail Mounting Requirements
The Contractor shall mount the glare shield blades to the base rail by a bracket assembly that allows the replacem ent of individual blades. The Contractor shall ensure that the bracket assembly holds th e blade rigidly in a fixed position and is adjustable, allo wing the blades to be switched for traffic passing left-to-left or right-to-right.
630.3.3 Repair of Inadequate Glare Shielding
The Contractor shall replace anchors that show inadequate bond ing with the concrete wall barrier. The Contractor shall replace incorrectly placed glare shield blades. Incorrect placement of a glare shield blade includes the follo wing: 1. The blades have an incorrect skew angle; 2. The blades are not vertically erect; 3. The blades have non-uniform spacing; or 4. The anchors are loose. The Project Manager will determine which items need to be repa ired or replaced. The Contractor shall perform the replacement or repair of inadequat e glare shielding at no additional cost to the Department.
630.4 Method of Measurement—Reserved
630.5 Basis of Payment
Glare shields used for temporar y construction traffic control will remain the property of the Contractor upon completion of the Project. Pay Item Pay Unit Individual Glare Shield Blades 12in Each Section 630: Glare Shields Page 713 Individual Glare Shield Blades 24in Each Multiple Glare Shielding 12in Linear Foot Multiple Glare Shielding 24in Linear Foot
630.5.1 Work Included in Payment
The following Work and items will be considered as included in the payment for glare shields and will not be measured or paid for separately: 1. Base rails, hardware, and anchoring appurtenances; 2. Relocation of glare shi elding within the Project; 3. Maintenance, repair and replacement; and 4. Reflective sheeting, Type IX. Section 631: Rumble Strips Page 714