Rev.9-1-95

SAWED JOINTS IN CONCRETE BARRIER

602-R-257

Joint B as shown on Standard Sheet CB-1 shall be constructed to a depth of 25 mm (1 in.) for standard concrete barrier of 0.84 m (33 in.) in height or to a depth of 38 mm (12 in.) for concrete barrier of 1.17 m (46 in.) in height. The spacing of all joints shall be as shown on the plans.

Sawing of joints shall commence as soon as the concrete has hardened sufficiently to permit sawing without excessive raveling, usually 2 to 12 hours. All such joints shall be sawed before uncontrolled shrinkage cracking takes place. If necessary, the sawing operations shall take place during both daytime and nighttime hours, regardless of weather conditions.