966SNOWPLOWABLE RAISED PAVEMENT MARKERS

966.1DESCRIPTION—This work is the furnishing, installation, replacement, and removal of snowplowable,

retroreflective, raised pavement markers of the type indicated.

966.2MATERIAL—

Type IV according to manufacturer’s recommendations for bonding the reflectors or holders to the pavement or the reflectors to the holders.

966.3CONSTRUCTION—As shown on the Standard Drawings, recommended by the manufacturer, and

as follows:

Do not place devices on pavement surfaces that show visible evidence of pavement cracking, checking, spalling, or failure of underlying base material. Do not place devices within 4 inches of a pavement joint. During the pre-installation layout, if it is de termined that a device would be placed at a point where any of the above conditions exists, relocate it longitudinally to the directed location.

blow the depression to remove loose material, then clean and dry the depression with compressed air. Apply the adhesive and place the unit into the depression. Be certain that markers are properly seated with the leading edges below the roadway surface or reflectors are placed as shown on the Standard Drawings. Secure in place until adhesive is set. At the time of installation, be sure that devices are free of dirt, dust, oil, grease, rust, moisture, or any foreign matter that impairs adhesion to the pavement. Do not apply devices if the pavement surface temperature and the air temperature at the time of application are less than 50F or as recommended by the manufacturer. Do not install markers if the pavement surface is moist or wet.

• Cut a new depression when required.

• Ensure the attachment area is smooth and clean.

• Apply adhesive and install the new holder or reflector as indicated above.

Remove by method that will cause the least damage t o pavement structure and is approved by the Department. Satisfactorily repair any pavement damage caused by the removal methods. When pavement markers are removed from an asphalt pavement, prepare the existing surface voids as specified in Section 413.3(g). Fill voids in pavement with asphalt wearing course or approved equal.

When pavement markers are removed from a cement concrete pavement, clean void areas from all loose and foreign material. Fill voids as specified in Section 525.3 or approved epoxy that is used in the installation of the holders.

of the following unsatisfactory conditions exist:

• The holder does not remain in place or does not resist deformation for 180 days after acceptance; has not remained in the exact location and alignment as originally placed; is deformed, cracked or otherwise notable to provide useful service; or shows visible signs of bond failure between the holder and the adhesive.

• Reflectors are missing or do not provide full service for a period of 180 days after acceptance.

• Reflectors fail between the date of notification and the replacement date.

966.4MEASUREMENT AND PAYMENT—

Includes removal and disposal of existing pavement markers and filling of pavement voids.

Includes removal and disposal of existing reflectors.

As indicated for the existing pavement type. Includes filling of pavement voids.